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    • 专利摘要:
    method for testing various spatially distributed protective assemblies of a current feeder network, as well as corresponding test system. method for testing several protective sets (se1, se2) spatially distributed and integrating a current feeder network (3). each of the protective sets (se1, se2) is equipped so that in the event of a fault (5) in the current supply network (3) the fault (5) in the current supply network (3) is isolated. the method comprises the following steps: a: formation of an initial test sequence. b: provision of a test sequence for the protective sets (se1, se2). c: data record provided by protective sets (se1, se2), which are provided by said protective sets (se1, se2) based on the test sequence. d: analysis of the data provided and generation of data fed to the protective sets (se1, se2) depending on the data provided. when the fed data is not part of the test sequence, this fed data will be integrated into the test sequence and will be continued with step b, while on the contrary it will be continued with step e: evaluation of all data provided by the protective sets (if1, if2). in this case, each test sequence comprises data fed in the form of process quantities from the current supply network (3) to at least one of the protective sets (se1, se2).
    公开号:BR112015019731B1
    申请号:R112015019731-0
    申请日:2014-02-19
    公开日:2022-01-11
    发明作者:Thomas Hensler；Stefan Schwabe
    申请人:Omicron Electronics Gmbh；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the method and test system for testing, that is, examining various protective devices, spatially distributed, used for protection of a power supply network (for example, a high voltage network).
    [0002] Protective devices for power supply network cover one or more protective devices that control process quantities (e.g. current, voltage, but also switching states, e.g. power switches or states, e.g. of transformers) of the power supply network, analyzing the existence of faults. When the protective device detects, through this analysis, a fault in a protection area allocated to it of the power supply network, the protective device transmits switching commands in order to specially activate a circuit breaker with which the detected fault will be isolated, being cut off. corresponding part of the power supply network. To do so, the circuit breaker interrupts the flow of current from the power supply network, interrupting the circuit breaker, for example, a line from the power supply network or current flow on one side of a transformer. Some protective devices, ie protective devices, are also able, after a certain pause period, to issue switching commands to close the previously opened circuit breaker. When the failure to close the circuit breaker is no longer present, the protective device, that is, the protective device, returns to normal control of the current supply network. If, on the other hand, the fault is still present when the circuit-breaker is closed, this will be recognized by the protective device, that is, by the protective device, so that the circuit-breaker will immediately be reopened through the protective device, that is, the protective device.
    [0003] In this case, a power supply network includes, in particular, a network that includes lines that have voltages greater than 10 kV between them. The power supply network indicated here comprises, on the one hand, a current transfer network with voltages above 100 kV and, on the other hand, so-called power supply networks with voltages above 10 kV (for example, greater than 20 kV ). In this case, it can be an alternating voltage (for example, 50 Hz) or a direct voltage. A circuit breaker is equipped to interrupt an active electrical connection of a high voltage line of this type. Thus, a circuit breaker can make the switching of high overload currents and short circuit currents (up to 800 kA) must pOU maintain these currents for a predetermined period, being able to perform the deactivation again.
    [0004] Testing of these protective devices is verified according to the state of the art generally by examining the individual protective device in an isolated test. The proof of the correct behavior of the system, that is, the correct joint action of all components (especially protective devices) is verified according to the state of the art, normally not by a functional test, but by a review of the respective technical documentation.
    [0005] Therefore, the present invention has the task of improving the test of spatially distributed protective devices of a power supply network so that the correct conjugated action of spatially distributed protective devices can also be tested, test consequences produced for this purpose.
    [0006] According to the invention, this task will be solved by a method for testing several protective devices spatially distributed of a power supply network, by means of a system for testing various protective devices of a power supply network, distributed in locations spatially separated by a control device and a computer program. The embodiments define preferred and advantageous embodiments of the present invention.
    [0007] In the context of the present invention, a method for testing various spatially distributed protective devices of a power supply network is offered. In this case, each of these protective devices is configured so that, when detecting a fault in an area of the power supply network, inspected by the respective protective device, it isolates this fault (especially by opening the allocated circuit breaker). In this case, the method according to the invention comprises the following steps: a) Creation of an initial test sequence, with which one or more protective devices can be tested, that is, examined. Each test sequence covers both inputs for the protective device to be examined in the form of process quantities from the power supply network and may also cover theoretical outputs (test response) that must be output by the respective protective device tested depending on the inputs. .b) Emission or application of the test sequence for the protective devices. c) Detection of the outputs of the tested protective devices, and the respective protective device emits these outputs based on the test sequence applied in the respective protective device. d) Analysis of the outputs and production of inputs to protective devices depending on the outputs. When the outputs of a protective device (e.g. the switching command to open a circuit breaker) result in changes to the process quantities of other protective devices, inputs (in the form of altered process quantities) will be produced according to these outputs. for these other protective devices.
    [0008] When these (again) generated inputs are not yet part of the test sequence, the test sequence will be extended by the corresponding (new) generated inputs and the method returns to step b, that is, it continues with step b.
    [0009] If on the other hand the inputs (again) generated are already part of the test sequence, the method will continue in the next step. e) Evaluation of the outputs of the protective devices. At the latest in this step, it will be tested whether the outputs generated in the context of the examination by the protective devices correspond to theoretical outputs that can be, for example, part of the test sequence. In this case, a theoretical output determines, for example, what was emitted by the respective protective device (for example, in the form of binary data) and when the respective protective device should issue the theoretical output (for example, after a first interval of time and before the end of a second time interval, both starting with the application of the test sequence). The result of all outputs being evaluated by the driver devices is whether or not the driver devices correctly processed the test sequence.
    [0010] Steps b) and c) occur in the case especially in time sync, so that the test sequence of all test devices will be applied by all test devices in test sync on the protective devices, receiving outputs in time equal to same time feature. This will be achieved by high-precision clocks on test devices that are synchronized, for example, by GPS. In this way, time points can also be detected at which certain outputs made by the protective devices are detected, in the analysis of step d) or in the evaluation of step e).
    [0011] Differently from what happens in the state of the art, advantageously, the combined action of different protective devices will also be examined when these protective devices are spatially separated. In the case, between spatially separated devices, it is understood that at least two of these protective devices are at least 1 km apart. .
    [0012] The outputs provided by the respective producing device can, on the one hand, comprise both a switch opening command, with which the circuit-breaker will be opened, as well as a reset command with which the circuit-breaker will be closed again.
    [0013] When the inputs for the protective devices deal with energy or voltages, these can be defined by the indication of fixed amplitudes, phase angles and/or frequencies. Furthermore, these inputs can also be defined in the form of a ramp, whereby, for example, the amplitude of a voltage or current increases or drops within a given time, passing from a first value to a second value. .
    [0014] In the test of protective devices, both the opening and the new closing of power switches are taken into account, the system advantageously - which in addition to the protective devices spatially distributed to be tested covers the system of the energy supply network - will be tested in their combined action. As the observed switching commands (for the power switches) are reflected in the process quantities, the opening and re-closing of the power switches will be advantageously simulated in the test according to the invention of protective devices.
    [0015] The generation of new inputs, depending on the detected outputs (eg switching commands) of the protective devices, is verified especially with the aid of a model of the power supply network, protected by the protective devices. Starting from the detected outputs, with the aid of this model, changes in the process magnitudes of the energy supply network will be determined, from which the inputs for the protective devices to be tested will then be derived.
    [0016] By employing the power supply network model, it can advantageously be determined, that is, simulated the temporal behavior of process quantities of the power supply network at a first location (that is, for a first protective device), when in a second location (e.g. via a switching command from a second switching device) a current switch is closed. In other words, with the power supply network model, the effects of the outputs (e.g. switching commands) of the second protective device can be simulated with respect to the process quantities detected by the first protective device, also when both protective devices they were many kilometers apart from each other.
    [0017] According to the invention, this model can be a static model or a dynamic or transient model.
    [0018] In this case, the static model models the transient state of the power supply network, while the dynamic model can additionally model switching processes, for example, of power switches. The transient model is the most accurate of the three models, because the transient model models the process quantities of the power supply network also in switching processes with an exact temporal behavior.
    [0019] The protective device protects the power supply network, more precisely the area of the power supply network allocated to the protective device, and the protective device, upon detecting a failure in the power supply network, issues a switching command. The switching command will be transferred to a circuit breaker allocated to the protective device, which, upon receiving this switching command, interrupts a high voltage line or a part of the power supply network in order to protect the area of the power supply network in this way. energy, which is protected by the protective device, against the effects of failure.
    [0020] For the control of the power supply network, the protective device covers process quantities of the power supply network, for example, a current flowing in a high voltage line or a high voltage existing between two high voltage lines. For this purpose, the voltage or current will be advantageously transformed with the aid of a transformer linked to the power supply network of the respective protective device, so that the protective device can control the process quantities in the form of a comparatively reduced voltage (for e.g. 100 V) and/or in the form of a comparatively low current (e.g. 1 A). In addition, there are alternative transformers (eg Rogowski transformer) that transform high voltage and/or intense current directly into weak signals (mV range) or digital signals that will then be controlled by the protective device attached. Depending on the process quantities transformed there, the protective device determines whether a fault is present in the power supply network. In this case, the fault will be present, for example, when the current rises above a current threshold value or when the voltage drops below a voltage threshold value.
    [0021] In this case, the test sequence of the protective device to be examined may be fed, i.e. predetermined in the form of weak signals, digital signals (e.g. via a network connection (e.g. LAN) (according to IEC 61850-9-2) But it is also possible that the test sequence is predetermined in the form of classical analogue signals (volt range).
    [0022] Furthermore, it is possible that one of the protective devices, through a communication channel with a reduced latency time (for example, through a waveguide, for example, through a fiber optic conductor applied to the line voltage) is in contact with another protective device on a communication link. In this way, these two protective devices can detect formations in near real time (eg process quantities, fault states or switching commands (imminent) from the respective other protective device). Depending on this information, the respective protective device will be able to decide whether, in appearance or depending on a fault in the power supply network, the fault is isolated or not by the respective protective device.
    [0023] When, for example, a protective device based on the process quantities it has detected is to detect a fault and simultaneously, based on the transmitted information transmitted to it through the communication channel, verifies that this fault has also been detected by another protective device , the protective device may, for example, delay the opening of the circuit breaker allocated to it in order to wait if the fault can be isolated by the other protective device.
    [0024] The present invention may also cover if a test in which the communication channel described above is intentionally interrupted between the protective devices, in order, in this way, to test the so-called backup behavior, that is, the backup protection (that is, that is, the protective behavior without a communication channel) of the protective devices.
    [0025] Advantageously, the method according to the invention will be automatically carried out by a central control device, which, for example, via test devices, is in a communication link with each protective device to be tested.
    [0026] As the spatially distributed test devices are in communication link with the respective central control device, it becomes possible to command and control advantageously each test device of the control device. On the other hand, the test results of all test devices, detected by the respective test device, are available centrally in the control device.
    [0027] According to another embodiment according to the invention, a sequence of data transmission steps can be provided. In this case, each of these data output steps defines or encompasses one or more inputs or test quantities. The expression inputs or test quantity includes at least one element from the following group:• An input in the form of process quantities (eg current, voltage) from the power supply network to the protective device.• A state (eg, switching state) of a circuit breaker, a state (eg, switching state) of a disconnector, or other binary process quantity coupled to a binary input of the protective device.• Information or data that is sent from a device protector, through a communication channel, to another protective device.
    [0028] The emission steps are issued as a test sequence for the protective devices. In this case, a sequence will be determined in which the emission steps will be sent to the protective devices, the so-called trip events. In other words, the sequence in which tripping events appear indicates the sequence in which the emission steps are issued as a test sequence for the protective devices. In this case, each of the triggering occurrences can be formed depending on at least one occurrence of a group of occurrences, and the occurrence group comprises the following occurrences:• An occurrence that occurs after a previously elapsed time defined.• An event that appears when a given data appears that is forwarded by a protective device, through a communication channel, to another protective device.• An event that occurs when a certain circuit breaker opens.• An event that appears when a particular circuit breaker is closed.• Another occurrence that appears (for example, in the case of a predefined modification of a process magnitude) that can be detected by the test device through the evaluation of the binary inputs.
    [0029] In this case, the appearance of a certain trigger event may lead to the immediate interruption of the current emission step provided or may result in a delayed interruption of the current emission step. After the current emission step is interrupted, an emission step will be activated depending on the respective trigger event. In this case, it is also possible that the emission steps have a predefined sequence and, after the interruption of the current emission step, the next emission indication step in this sequence will be activated when no other emission step is defined by the triggered trigger event. The emission step subsequent to the current emission step can be provided either only from the current emission step (in this case, a trigger event determines the moment of transition from the current emission step to the subsequent one), or it can be dependent on the occurrence only. trigger present or may be dependent either on the current emission step or also on the current trigger occurrence.
    [0030] In other words, on the appearance of a certain tripping result, the test quantities or inputs, with which the protective devices are subject according to the current emission step, can be replaced immediately or with delay by the test quantities or by the inputs that are defined by the next emission step that follows the uninterrupted emission step, depending on the present trigger result.
    [0031] A trigger occurrence may be present when precisely one result from the above-mentioned result group is present. For example, one trip event might occur when a breaker is closed, while another trip event might present when the same breaker is opened. However, it is also possible for a given trigger occurrence to be defined by a logical link of multiple occurrences. For example, a trigger event may be present when two (or more) power switches close (logical AND), whereas another trigger event may be present when at least one of two (or more) power switches close ( logical OR).
    [0032] According to another modality, the inputs to the protective devices are made especially not only depending on the outputs by the protective devices, but also the inputs can also change after a certain period of time has elapsed (regardless of the outputs).
    [0033] In the additional mode described here, the generation of inputs to the protective devices is verified depending on the outputs by the protective device based on the predetermined emission steps, for example, based on a model of the power supply network, depending on the outputs. Thus, in this other modality, contrary to the formation of inputs based on a network simulation (for example, based on the model of the energy supply network), it is also possible to change the state that would not actually occur. This advantageously opens up additional possibilities in which relatively simple determination failure scenarios can be tested which in reality could possibly only be generated with difficulty.
    [0034] Also in this case, the reaction of one or several protective devices influences the elaboration of the final test sequence. Furthermore, possible latency periods in the communications link between the test devices prevent a conventional elaboration of the final test sequence without recursion. In other words, the present invention will also be necessary for the elaboration of the final test sequence and therefore for the testing of various protective devices, spatially distributed, when the inputs to the protective devices are obtained with the aid of the emission steps, depending on outputs by protective devices (as described in the other modality).
    [0035] Especially, the initial test sequence, according to the other embodiment, will be issued with no results or tripping occurrence (ie, no switching reactions of power switches) to the protective devices. Then, the reactions of the protective devices will be evaluated regarding the test sequence (initial) and the corresponding tripping occurrences will be calculated, with which other entries for the protective devices will be elaborated, with which the test sequence will be expanded. This extended test sequence will be re-issued to protective devices which may then result in further tripping occurrences. This binding sequence will be repeated until no other relevant data from the protective device is detected that would result in another suitability of the test sequence.
    [0036] In the context of the present invention, a test system is also offered with which various protective devices of a power supply network in spatially distributed locations (eg substations) can be tested. In this case, the test system comprises a control device and several test devices, and at each location of the protective devices at least one of the test devices is present. The exam device is configured to test one or more protective test devices that are present in the same location as the respective exam device. Furthermore, the examination device is equipped to carry out the method according to the invention.
    [0037] The advantages of the examination system according to the invention correspond to the advantages of the method according to the invention, already mentioned in detail initially, in such a way that repetition is avoided.
    [0038] The control device can be integrated with one of the test devices, so that the control device and the corresponding examination device are integrated in the same device.
    [0039] In addition, a control device for a system for testing various spatially distributed protective devices of a power supply network is provided. In this case, the control device is equipped to communicate with several test devices through corresponding communication links (eg internet, telephone network) that are allocated to one or several protective devices. Each of these protective devices is configured to test one or more protective devices. The control device is specifically configured to carry out the method according to the invention.
    [0040] In the communication link that establishes communications with which the test devices establish communications with the control device, it can also cover a slow link with a high latency time (for example, if it is a wireless network, UMTS) , because the present invention advantageously, with respect to this communication link, does not make real-time demands.
    [0041] Furthermore, the present invention describes a computer program product, especially a computer program or software that can be loaded into a memory of a programmable control, that is, of a computer. With this computer program product all the above-described different embodiments of the method according to the invention can be realized when the computer program product is operating on the control or on the computer or computer program product requires eventual programming means, for example , libraries and supporting functions, for carrying out corresponding embodiments of the method. In other words, with the embodiment aimed at the producer of the computer program, a computer program or software must be protected in particular with which one of the above-described procedures of the method according to the invention can be carried out, that is, which performs this modality. In this case, with respect to the software, it may be a source code (for example, C++) that still needs to be compiled or linked or just interpreted, or it may be another executable software code that, for its execution, only needs to be loaded in the corresponding computer.
    [0042] Next, the present invention will be presented again from another point of view.
    [0043] The present invention tests or examines various protective devices, spatially distributed, of a power supply network. In this case, process quantities will be specially calculated, through a corresponding model of the current supply network, in the places of mounting of the protective devices to be tested, being indicated with the aid of the test devices for the protective devices for the purpose of the test. . In this way, the normal operation, fault states and deactivation states will be modeled, that is, simulated in a way that the protective devices, with operating modes of different system states (power supply network including protective devices) are tested. The model used to calculate the process quantities exerts, in this case, on the one hand, an influence on the precise values of the process quantities and, on the other hand, it influences the sequencing of the process quantities, as shown, for example, in the appearance of a fault. or switching the circuit breaker.
    [0044] The following problem should be solved. The delay times that occur in the transmission of a switching process to a circuit breaker via the communication network (e.g. internet, telephone network) through which the test devices are linked with the control device exceed the speed of expansion of the switching process effects to a large extent through the power supply network. The present invention solves this problem in that the test sequence is gradually formed or expanded. In this case, it is assumed that the respective protective device has a deterministic behavior, so that the respective protective device (including the allocated circuit breaker) in the repeated application of the same test quantities reveals, within certain tolerances, an identical behavior ( e.g. when issuing switching commands).
    [0045] For the embodiment of the present invention, the test devices supply several analogous current/voltage inputs of the protective devices with corresponding test quantities, that is, inputs. It can also be useful for testing when certain binary inputs of the protective devices with which, for example, switching positions of power switches are signaled, are supplied with test quantities, ie corresponding inputs.
    [0046] Compared with the state of the art, the present invention has the following advantages:• The test results of all protective devices are available especially in the central control device and therefore can be evaluated centrally.• As is also the case. taking into account the reaction of the power supply network in relation to switching commands in the test of the protective devices, a reaction coupling between the system to be tested (feeding network with current with the protective devices) and the model of the system used for the test.• In the test, all outputs by protective devices (especially also reactivation commands for power switches) can be taken into account. • The test according to the invention also examines the correct behavior of the system in terms of opening and re-closing cycles of power switches, so that discrepancies that arise through false settings of the different protective devices, as well as system behavior not synchronized, are taken into account in the test and eventually lead to a negative test result.
    [0047] The present invention is adapted for carrying out tests of protective devices with which the power supply network will be protected. Naturally, the present invention is not restricted to this preferred area of use because with the present invention protective devices which have just been produced and which have been maintained can also be tested.
    [0048] Next, the present invention will be explained in more detail with reference to the accompanying drawing, with reference to preferred embodiments according to the invention.
    [0049] Figure 1 presents a test system according to the invention together with a power supply network that is protected by two protective devices.
    [0050] Figure 2 presents a flowchart of a method according to the invention.
    [0051] Figure 1 shows a power supply network in the form of a single free line 3 according to the invention a power supply network can comprise several free lines, other high voltage lines, parallel lines and transformers that are joined to example of a network. Free line 3 ends at both ends on a collector rail SS1, SS2 at different substations UW1, UW2. Inside the respective substation there is a circuit breaker, with which the electrical connection between the free line part 3 and the respective collector rail SS1, SS2, which establishes the connection between the two substations UW1, UW2, can be interrupted. Furthermore, inside the respective substation UW1, UW2, there is a transformer which can be used to transform the intense current carried by the free line 3 (phase current), as well as a high voltage applied to the free line 3, with the result of this transformation can be conveyed in the form of a current of a lower amplitude voltage (eg 1 A and 100 V) as process quantities for the respective protective device. Based on these process sizes, the respective protective device controls the power supply network, ie the free line 3. The point where the respective circuit breaker and the respective transformer are located is designated in Figure 1 with k1t ie k2.
    [0052] In the event of a fault 5 (for example, a short circuit) of the free line 3, the respective protective device SE1, SE2 detects this fault 5 based on the process quantities, whereby, for example, the current increases through a current threshold value or the voltage drops below a voltage threshold value. As soon as the respective protective device SE1, SE2 detects fault 5, it will issue a commutation command to the circuit breaker respectively applied in order to interrupt the electrical connection and thus to isolate fault 5. After a predetermined pause after fault 5 has been detected , the respective protective device SE1, SE2 forwards a switching command to the circuit breaker allocated to it in order to reactivate the electrical connection. When fault 5 still exists at this moment, it will be detected by the respective protective device SE1, SE2 based on the process quantities carried to it by the free line 3 and it will issue another switching command to again interrupt the electrical connection with the circuit breaker respectively allocated .
    [0053] In addition, the two protective devices are linked in technical form of communication, through a communication channel 2. Through this communication channel 2, the two protective devices SE1, SE2 can transmit to each other almost in real time determined in formations (such as process quantities, switching commands).
    [0054] To test the protective devices SE1, SE2 there is each substation UW1, UW2 a test device PE1, PE2, and the respective test device PE1, PE2 with a test line PL1, PL2 is joined with the same protective device SE1 , SE2 integrated in the same substation UW1, UW2. Furthermore, there is a central control 1 which via a communication line 6 and a WAN communication line 4 is linked with the two test devices PE1, PE2.
    [0055] Test devices PE1, PE2 are equipped with a high-precision clock, and the clocks of test devices PE1, PE2 are usually synchronized in GPS in order to show exactly the same time. Temporarily synchronized clocks are of great importance in the application of the test sequence and in the detection of the outputs by the different protective devices SE1, SE2.
    [0056] To test protective devices SE1, SE2, protective devices SE1, SE2 will be separated from the power supply network 3, and the command lines SL1, SL2 will be interrupted. During the test, the protective devices SE1, SE2 receive through the respective test lines PL1, PL2 the protest quantities normally detected by them through the transformer and supply, in normal operation, through the referred test line PL1, PL2 the switching commands supplied via the command line SL1, SL2 the power supply network is therefore not protected during the test by the protective devices SE1, SE2, but also not interfered with by switching commands initiated through the test.
    [0057] Figure 2 presents a flowchart of a method according to the invention for testing various protective devices SE1, SE2 spatially distributed and integrating a power supply network.
    [0058] In step S1, a test sequence will be formed for several or for all protective devices SE1, SE2 to be tested. With this test sequence, the respective protective device SE1, SE2 must be examined, when switching from normal operation to a faulty state (i.e. the respective protective device SE1, SE2 detects a fault in the power supply network) behaves in a way that correct. For this purpose, the corresponding protective devices SE1, SE2, through the test line PL1, PL2, will be conducted to process quantities that, in the event of a failure, would be recorded by the power supply network, that is, by the free line 3.
    [0059] In step S2, the test sequence will be distributed by the control device 1 to the test devices PE1, PE2, being transferred by these test devices PE1, PE2, at exactly the same time, to the respective protective devices SE1, SE2, and the corresponding test samples from the respective protective device SE1, SE2 will be fed through the respective test lines PL1, PL2. The reaction of the protective devices SE1, SE2 in relation to these test samples will be detected in step S3, and the outputs will be detected by the respective protective devices SE1, SE2 of the respective test device PE1, PE2 for the respective test line PL1, PL2, receiving a very accurate test mark. These outputs cover, for example, switching commands on the circuit breaker allocated to the respective protective device SE1, SE2.
    [0060] In step S4, the outputs detected in the preceding step S3 (especially switching commands) will be analyzed. In this analysis, it will be tested whether an output by a protective device SE1 SE2 alters the magnitudes of the process of the power supply network 3, which, for example, is the case when the outputs cover a commutation command to open a circuit breaker that is currently closed. With the aid of a model of the power supply network 3, in this case, starting from the commutation commands detected in step S3, the process quantities will be simulated in all those points Ki, K2 of the power supply network 3 in which the quantities of process by protective devices SE1, SE2 in normal operation (non-examination operation). From the process quantities simulated in this way, corresponding inputs result for the protective devices SE1, SE2. (for example, a switching command from protective device SE1 results in the opening of the circuit breaker at K1 and therefore results in a modification of the process quantities at point K2, which again results in a change in the inputs of protective device SE2, fed through from the PL2 test line).
    [0061] When step S5 is performed at least for the second time, in step S5 it will be tested if the current outputs coincide within certain tolerances (in a deterministic way) with the outputs of the previous pass. The negative result of step S5 does not necessarily result in a negative test result. In the normal case, the method will be repeated on a negative result of step S5, where tolerances are eventually increased. The evaluation of the result of step S5 can also be done manually. In this case, the method will only be repeated after a negative result when there is agreement with the technician who controls the exam.
    [0062] In step S6, it can be tested whether the entries generated in the previous step S4 are already contained in the examination sequence. In the first pass of step S6 this will normally not be the case since in step S3 command output has been detected. When there are entries not yet included in the test sequence, these entries will be integrated into the test sequence in step S7. Thereafter, the method according to the invention continues again at step S2.
    [0063] It is, therefore, a recurrent method in a new passage from steps S2 to S6, with the test sequence, modified in the last step S7, the passage from normal operation to the fault state will be tested and from there to the state of the switching processes of the power switches initiated by the protective devices SE1, SE2. In the case in step S6, it will be tested again if in the previous step S4 there are outputs (especially switching commands) that were not present in the previous step. This occurs, for example, when one of the protective devices SE1, SE2 issues a commutation command for the renewed closing of the circuit-breaker allocated to it.
    [0064] The method goes through steps S2 to S6 until the protective devices SE1, SE2 do not emit others, that is, new outputs (especially switching commands). When this occurs, the method branches to step S8, in which outputs by the protective devices SE1, SE2 detected by the respective test devices are evaluated, in order to produce an exam result.
    [0065] Normally, the detection of other inputs in the test sequence also covers the detection of theoretical outputs that must be output by the protective devices SE1, SE2 based on the newly registered inputs. Also due to this reason, it is possible that, for example, in step S4 it is tested, in the analysis of the outputs, if the data of the protective devices SE1, SE2, detected by the test devices PE1, PE2, are correct or if a fault has already been detected. faulty behavior of the protective devices SE1, SE2, which could result in a negative test examination and therefore a premature interruption of the test.
    [0066] In addition, at each other passage of steps S2 to S6, it can be checked whether the outputs of the protective devices SE1, SE2 correspond to the outputs of the protective device SE1, SE2 of the respective previous passage or if the same switching commands were specially given. When this is not the case, the test may be terminated in the same manner with a negative result. Reference Listing1 Control2 Communication channel3 Free line4 WAN communication link5 Fault6 Communications lines^1, ^2 Nodes (power interrupt and transformer)PEi, PE2 Test devicePLi, PL2 Test lineSLi, SL2S1-S8 Control lineMethod stepSSi , SS2 Collector railUSW1, USW2 Substation
    权利要求:
    Claims (12)
    [0001]
    1. Method for testing various protective devices (SE1, SE2) spatially distributed from a power supply network (3), characterized by the fact that each of the protective devices (SE1, SE2) is equipped to, in the event of a fault ( 5) in the power supply network (3), isolate the fault (5) in the power supply network (3), the method comprising the following steps in a control device: creating an initial test sequence, b: emission of the test sequence for the protective devices (SElf SE2),c: detection of outputs of the protective devices (SE1, SE2) that the protective devices (SE1, SE2) emit due to the test sequence,d: analysis of the outputs and generation of inputs for the protective devices (SE1, SE2) depending on the outputs, and in the event that the inputs are not part of the test sequence, these inputs are integrated into the test sequence, continuing with step b, when whereas, differently e, is continued with step e, ee: evaluation of all outputs of protective devices (SE1, SE2), with the test sequence comprising inputs in the form of process magnitudes of the power supply network (3) for at least one of the protective devices (SE1, SE2) and theoretical outputs, which must be output by the respective protective device (SE1, SE2) tested depending on the inputs.
    [0002]
    2. Method according to claim 1, characterized in that the outputs of at least one of the protective devices (SE1, SE2) comprise a switch opening command, with which a circuit breaker is opened to isolate the fault ( 5) and/or a reactivation command, with which fault isolation (5) is suspended again by closing a circuit breaker.
    [0003]
    3. Method according to claim 1 or 2, characterized in that the generation of inputs occurs depending on the outputs, insofar as, based on the outputs based on a model of the power supply network (3), are certain changes in the process quantities of the energy supply network (3).
    [0004]
    4. Method according to claim 3, characterized in that the model is a static, dynamic or transient model.
    [0005]
    5. Method according to any one of the preceding claims, characterized in that from each protective device (SE1, SE2), in the event of a fault (5) in the power supply network (3), a command is issued to open a circuit breaker to isolate the fault (5).
    [0006]
    6. Method according to any one of the preceding claims, characterized in that for each of the protective devices (SE1, SE2) the process quantities of the power supply network (3) are detected through a transformer connected to the network power supply (3), and depending on the process magnitudes, it is determined whether a fault (5) is present in the power supply network (3).
    [0007]
    7. Method according to any one of the preceding claims, characterized in that one of the protective devices (SE1, SE2), via a communication channel (2), is linked with another of the protective devices (SE1, SE2) , and the protective device (SE1, SE2), through the communication channel (2), detects information from the other protective device (SE1, SE2), and depending on the information, it is decided whether, in the event of a fault (5) in the power supply network (3), the fault (5) is isolated from the protective devices (SE1, SE2).
    [0008]
    8. Method according to any one of the preceding claims, characterized in that the method is carried out automatically by a central control device (1).
    [0009]
    9. Method according to any one of the preceding claims, characterized in that emission steps are pre-established, each of the emission steps comprising at least one input, and emission steps being emitted as the test sequence for protective devices (SE1, SE2) in a sequence dependent on tripping occurrences, each tripping occurrence being dependent on at least one occurrence of a group of occurrences, with the occurrence group comprising • the end of a period of predetermined time, • arrival of a given data from one of the protective devices (SE1, SE2), through a communication channel, to another of the protective devices (SE1, SE2), and • a switch position of a circuit breaker is changed.
    [0010]
    10. Test system for testing various protective devices (SE1, SE2) arranged in spatially distributed locations of a power supply network (3), for carrying out the method as defined in any one of claims 1 to 9, characterized by the fact that the test system comprises a control device (1) and several test devices (PE1, PE2), and at each location (USW1, USW2) of the protective devices (SE1, SE2) at least one of the test devices is present (PE1, PE2), and the control device (1) has a communication link (4, 6) with each of the test devices (PE1, PE2), and each of the test devices (PE1, PE2 ) is prepared to test at least one of the protective devices (SE1, SE2), which is present in the same location (USW1, USW2) as the respective test device (PE1, PE2).
    [0011]
    11. Test system according to claim 10, characterized in that the control device (1) is integrated in one of the test devices (PE1, PE2).
    [0012]
    12. Control device (1) for a test system, as defined in claim 10 or 11, for testing various protective devices (SE1, SE2) spatially distributed from a power supply network (3) and for carrying out the method as defined in any one of claims 1 to 9, characterized by the fact that the control device (1), for the purpose of communication, is equipped with several test devices (PE1, PE2) allocated respectively to the protective devices (SE1, SE2), being that each test device (PE1, PE2) is equipped to test at least one of the protective devices (SE1, SE2).
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    同族专利:
    公开号 | 公开日
    ES2616122T3|2017-06-09|
    AU2014220753A1|2015-09-17|
    CN105009395B|2018-04-13|
    WO2014128144A1|2014-08-28|
    KR20150118184A|2015-10-21|
    RU2635306C2|2017-11-10|
    KR101802226B1|2017-11-28|
    CA2901812C|2017-04-18|
    US9632147B2|2017-04-25|
    ZA201505874B|2020-01-29|
    CA2901812A1|2014-08-28|
    AU2014220753B2|2016-03-31|
    MX345818B|2017-02-16|
    EP2770597B1|2016-12-21|
    EP2770597A1|2014-08-27|
    US20160003921A1|2016-01-07|
    AU2014220753B9|2016-09-08|
    CN105009395A|2015-10-28|
    RU2015137955A|2017-03-27|
    BR112015019731A2|2017-07-18|
    MX2015010726A|2016-01-08|
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    法律状态:
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-02-04| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-08-24| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-11-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2022-01-11| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/02/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP13155926.2A|EP2770597B1|2013-02-20|2013-02-20|Method for testing a plurality of spatially distributed protection devices of an energy supply network and corresponding testing system|
    EP13155926.2|2013-02-20|
    PCT/EP2014/053190|WO2014128144A1|2013-02-20|2014-02-19|Method for checking multiple spatially distributed protective devices of an energy supply network, and corresponding checking system|
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