• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a method for decentralized energy management for charging stations (LS1, LS2,..., LSn) for electric vehicles, from which energy is taken from a power supply network and / or fed back via the charging stations (LS1, LS2,..., LSn) is, and which when charging and / or discharging with the charging stations (LS1, LS2, ..., LSn) form a unit. In this case, data of respective current process states of the respective charging stations (LS1, LS2,..., LSn) are received and collected by a data compression system (DVS), which has a compaction (VM) and a distribution module (AM) (1). Then, the data is merged by the compaction module (VM) into data units (e.g., balance group specific, network node specific, etc.) according to appropriate methods (2) and sent to the respective higher level processing systems (BG1, ..., BGn, NM), e.g. Balancing group management systems, network operator systems, etc. forwarded (3). The inventive method, in which a data compression system (DVS) is used, the effort of the central, higher-level processing systems (BG1, ..., BGn, NM) is kept low in a simple and cost-effective manner with energy suppliers or network operators. By appropriate consideration of specifications, which as group signals from the higher-level processing systems (BG1, ..., BGn, NM) to the data compression system (DVS) passed (4) and in target specifications for the charging stations (LS1, LS2, ..., LSn ) (5), can be optimally addressed to the needs of the higher-level processing systems as well as network specifications.
    公开号:AT510795A1
    申请号:T2042/2010
    申请日:2010-12-10
    公开日:2012-06-15
    发明作者:Erich Fuchs
    申请人:Siemens Ag Oesterreich；
    IPC主号:
    专利说明:

    201025211 1
    description
    Method for decentralized energy management for charging stations for electric vehicles
    Technical area
    The present invention relates generally to the field of energy management, which is usually concerned with planning the power supply and operation of power engineering generation and supply units. More particularly, the present invention relates to a method of decentralized power management for, in particular, a larger number (e.g., more than twenty) electric vehicle charging stations. In this case, energy is taken from the electric vehicles via the charging stations from an energy supply network or fed back into this network. During charging or discharging of a memory of the electric vehicle, a unit is formed by a charging station and an electric vehicle.
    State of the art
    Vehicles (e.g., automobiles, bicycles, etc.) with an electric drive, so-called electric vehicles, have recently become the focus of attention. There are a number of reasons for this. Many large and well-known energy supply companies expect electric vehicles to open up a new sales market for energy. In addition, electric vehicles are significantly more environmentally friendly than vehicles powered by conventional internal combustion engines when, for example, environmentally friendly technologies and methods for generating electrical energy, e.g. Solar energy, wind and / or hydropower, etc. are used.
    Finally, with the appropriate advancement of storage technology, an energy storage device - the so-called 2 201025211 ··· «• * * • ·» * * * · * * * * * * * »
    Accumulator - an electric vehicle can also be used as a microenergy storage and integrated into an electrical network. That is, it is consumed by an electric vehicle not only energy or received via a so-called charging device to charge the battery, but also stored energy and fed back, for example via the charger into a power grid. Thus, electric vehicles can also help compensate for the often fluctuating feed-in with regenerative technologies (such as wind power, photovoltaic, etc.). In so-called vehicle-to-grid scenarios, energy / network services, for example Utilization of the energy storage of an electric vehicle in a charging device or outlined by reactive power supply for voltage regulation.
    Currently, in particular, the automotive industry already uses so-called "hybrid vehicles". offered, which also have a supporting electric drive in addition to a combustion engine drive. The first pure electric vehicles, which are comparable to conventional cars, especially in the range, are already planned and expected to be produced and distributed in larger quantities over the next few years.
    For the reasons described, the number of electric vehicles in road traffic is likely to rise sharply in the near future. Therefore, a variety of charging facilities, so-called charging stations, both in the public transport space (e.g., car parks, parking lots, etc.) and on private premises {e.g. Fleet parking spaces of companies, parking garages of shopping centers, garages, etc.) may be necessary to recharge the batteries of these electric vehicles when needed or to use as energy storage. However, this means that, given the attractive distribution of electric vehicles, there will probably be a large number of charging stations required for their operation. 201025211 • · · · · · · * * * l * i «
    If an electric vehicle is connected by means of a charging station to a power supply network for charging or possibly discharging the battery, then in a liberalized electricity market usually at least two contracts in force: on the one hand a contract with a network operator on the use of the power grid (eg lines, network nodes, etc.) / to which the respective charging station is connected, and on the other hand, a contract with an energy supplier or provider of electrical energy (eg power plant operators, energy traders, etc.) on the reference or optionally via a storage of electrical energy. In this case, for example, the network operator can be specified by the location of the charging station and the power utility usually be almost freely selectable, the respective charging station can be assigned by choosing an energy supplier of a so-called balance group or a so-called balancing group. A balance group or balancing group is a technical term in the energy industry. In a liberalized electricity market, utilities and energy customers (e.g., vehicle owners of an electric vehicle, etc.) are grouped into balance groups. Within a balance group or a balancing group, the energy delivered by an energy supplier must be brought into line with the energy consumed by its customers at all times. For a corresponding network operation management and for an appropriate energy management in a balance group or in a balancing group, network operators and energy suppliers have centrally implemented management systems in which energy consumers for network management, energy management and / or billing are mapped and managed accordingly. In the case of a large number of charging stations, through which not only energy can be taken but also buffered and fed back, the disadvantage with a central management system is that each individual charging station must be mapped and managed for active influence in the management system. 4 4 * · · · * * * * 4 201025211
    As a result, the respective central management system of the Metz operator, the energy provider, etc., such as. a network management system, a balance group management system, etc. for managing a large number of charging stations, which are small but flexible units in performance, designed to be powerful enough to meaningfully control facilities for grid operation and power supply (eg power plant scheduling, automatic generation control, etc.) to be able to. As a result, there is considerable additional expenditure on the part of the network operators as well as on the part of the energy suppliers, such as through additional hardware, more powerful hardware, faster acting applications, etc. in the design of their management systems.
    Furthermore, when using central management systems on the part of network operators or on the part of energy suppliers to each charging station for an influence on a communication link with the appropriate management systems must be established. This also leads to a considerable expense and costs in the communication devices such. Lines to the charging stations, telecontrol lines, etc.
    Presentation of the invention
    The invention is therefore based on the object to provide a method by which a simple and cost-effective manner and with relatively little effort, a management and control of charging stations for electric vehicles can be performed decentrally in the electrical energy supply network.
    The solution of this object is achieved by a method of the type described above, being received and collected by a data compression system data on each current process conditions of the respective charging stations or the respective accumulators of the connected vehicles. 5 201025211
    By means of a compression module of the data compression system, these data are then assembled according to appropriate protocols to data units. The data units thus generated are then forwarded to higher-level processing systems, in particular energy management systems, balance group management systems and / or network operator systems.
    The main aspect of the invention is that by a hierarchical structure of the method and by introducing the data compression system, a large number, in particular more than twenty, charging stations or accumulators of electric vehicles connected thereto, one unit of which is formed with the charging stations during charging and discharging , can be managed in the central processing systems of utilities, balance groups and / or network operators in a simple and cost-effective manner. By compacting the individual data of the process conditions of the respective, usually decentralized (eg in different parking garages, garages, parking lots, etc.) arranged charging stations, the charging stations can be regulated without much effort or included in the planning of network operators and / or energy suppliers become. A so-called quantity structure problem, which may occur due to a plurality of charging stations, in processing systems {e.g. larger, more powerful, expensive hardware, etc.) of network operators and / or energy suppliers is defused by the inventive method in a simple way.
    Furthermore, the inventive method has the advantage that the cost of communication links between charging stations and central, higher-level processing systems at energy suppliers and / or network operators can be kept simple. For example, the charging stations can be locally connected to the decentralized {e.g. in the respective parking garage, at the respective parking lot, etc.) data compression system can be connected via suitable physical connections (for example power line carriers, etc.). From data 6 201025211 t · φ · ·
    Compaction system is then only a connection (for example, telephone connection, telecontrol link, etc.) to the respective, higher-level processing system necessary.
    It is advantageous if, in addition, suitable specifications are transmitted as a group signal for the charging stations from the higher-level processing systems. This group signal is then decomposed by means of a distribution module of the data compression system in target specifications for the respective charging stations and then the target specifications are transmitted to the corresponding charging stations. In this simple way, e.g. The requirements and operating requirements of various energy market players (for example network operators, energy suppliers, electricity traders, etc.) to the charging stations are taken into account and forwarded in the best possible way in the case of the communication connections.
    The specifications and operating requirements are transmitted as a group signal to the data compression system, which is for example distributed in a decentralized manner and which is responsible for a number of charging stations, via a communication connection (for example telephone connection, telecontrol link, etc.). The data compression system then optimally converts these specifications and operating requirements, which may also lead to ideal conditions that can not be fully realized, into set specifications for the individual charging stations by means of the distribution module. The target specifications are then transmitted via a suitable physical connection (for example, power line carrier) to the charging stations or to the electric vehicle or its accumulators connected thereto.
    Furthermore, it is recommended that the data about the current process states, in particular by means of summation, statistical summation of time staggering and / or prioritization of requirements, for example of the network operators, energy suppliers, etc., be combined into data units by the compaction module. With the compaction module, the data about the respectively current process states are thus combined by means of suitable and simple compaction methods and protocols in such a way that data units which are easy to use are formed for the superordinate processing systems. As compaction methods, e.g. depending on the respective data to be compressed, for example summations or statistical summation, in which the individual data are weighted appropriately prior to the summation. By e.g. the compression method of staggering or prioritization can be easily taken into account requirements and / or operating requirements.
    An expedient development of the invention provides that the grouping signal, in particular by means of so-called linear programming with suitable secondary conditions and / or with so-called preference target functions, is split up into the desired specifications for the charging stations by the splitting module. In the deaggregation of group signals by the splitting module, it may be done by suitable partitioning techniques such as e.g. Linear Programming with appropriate constraints and / or preference target functions in case of conflict in a simple manner, an optimal division or conversion of the group signal to the target specifications for the charging stations are taken into account. As a result, conflict situations which may additionally arise due to conflicting specifications can be prevented or mitigated and optimal states can be determined in which the majority of the specifications are taken into account.
    It is favorable if, by means of compression of the data on current process states of the charging stations, data units are generated specifically for respective balance groups or balancing groups concerned and the associated higher-level processing systems. Thus, ideally, the data units can be tuned to the needs of the processing systems of the respective balance groups or circuit. 8 8 • * • * 201025211
    It is also advantageous if specific data units are generated by means of compression of the data on current process states of the charging stations, in which the current process states of all charging stations assigned to a network node are included. Thus, data units can be determined which can be easily used by a network operator to control and plan the operation of his network. In this way, the network operator can also check whether certain specifications (eg maximum permissible charging power, reactive power, etc.) for the network operation are met by a group of charging stations In addition to charging stations, further consumers (eg households, etc.) are supplied by a network node.
    Expediently, technical features of the data unit, in particular current and / or maximum charging power of a sum of charging stations, fill level of the sum of electric vehicles at the charging stations, etc., are also sent with a generated data unit. These features can be specifically tailored to the respective higher-level processing system, taking into account whether the higher-level processing system is a network operator system, an energy management group or a balance group management system.
    Advantageously, with the method according to the invention also data about the current process state of a charging station such as a current status message, a memory content of the electric vehicle, a maximum charging power of the electric vehicle, a maximum reactive power of the electric vehicle, a current memory level, a current charging power, a reactive power and current or balance group affiliation of the electric vehicle. These data are then summarized by the compaction module 9 201025211 to corresponding data units and the respective higher-level processing systems such. Energy management systems, balance group management systems and / or network operator systems. From energy suppliers and / or network operators, the data units can then be used for controlling, regulating and planning of power supply or network operation. For example, e.g. an energy supplier known by which storage levels of electric vehicles may be available for a compensation of fluctuations in the power grid or what is expected to charge for charging electric vehicles.
    Therefore, it is also advantageous if as a group signal or as a basis for the target specifications for the charging stations from the respective higher processing system in particular dependent on a power supply performance target for all belonging to a balance group electric vehicles and / or a currently allowed maximum charging power and / or desired reactive power be specified for all belonging to a network node charging stations. In particular network operators can thus define specifications or requirements as a group signal, by means of which e.g. Overload conditions on network infrastructure (e.g., lines, etc.) with associated emergency shutdowns are prevented.
    It is also advantageous if, in particular, signals for connecting and / or switching off a charging station, a power setpoint for the charging station and the electric vehicle in the charging and / or discharging direction, a reactive power setpoint for the charging station and the electric vehicle in charge as desired specifications for the respective charging station - And / or unloading direction, etc. are transmitted to the respective charging station. By the target specifications or the special signals to the respective charging stations and the associated electric vehicles or their accumulators can be specified by energy providers, e.g. concerning a balanced current account in a balance group or requirements of network operators e.g. 201025211 • * # · »· * i · ·» ·· »· 4 · * 4 4 > 4 4 4 4 4 4 * * 4 »* 4 network infrastructure and security are easily implemented.
    Brief description of the drawing
    The invention will now be described by way of example with reference to the accompanying figure. 1 shows an exemplary sequence of the method according to the invention for decentralized energy management for charging stations for electric vehicles.
    Embodiment of the invention
    FIG. 1 shows, schematically and by way of example, a plurality of charging stations LSI, LS2, LSn, to which electric vehicles and / or their accumulators can be connected for charging or also for feeding back energy. In this case, from the respective charging station LSI, LS2, ..., LSn with the respectively connected electric vehicles or accumulator unit - a so-called aggregate - formed.
    The charging stations LSI, LS2, ..., LSn may, for example, be installed in larger numbers (for example more than twenty charging stations LSI, LS2, LSn) in multi-storey car parks, in car parks, fleet parking spaces of companies and / or in parking areas at shopping centers. In such an attachment, the charging stations LSI, LS2, ..., LSn of a parking garage, parking lot, etc. are usually assigned to a particular network node NK of an energy network operator and are supplied by this. However, it is also conceivable that charging stations LSI, LS2, ..., LSn e.g. in individual private garages, etc. are accommodated. Then the charging stations LSI, LS2, ..., LSn can also be supplied by different network nodes NK, which has no effect on the method according to the invention.
    The individual charging stations LSI, LS2,..., LSn have a communication connection, for example via Power Line 11 11 201025211 * ♦ * * · ** • · · · · ·
    Carrier to a data compression system DVS. Such data compression systems DVS are for example installed where a larger number of charging stations LSI, LS2,..., LSn e.g. under a certain network node NK are in use. Thus, e.g. a data compression system DVS be set up in a parking garage, at a parking lot, a parking area of a shopping center and / or at an Elottenparkplatz a company.
    The data compression system DVS comprises at least one compaction module VM and a splitting module AM and is connected via a communication link (e.g., telephone link, telecontrol link, etc.) to higher level processing systems BG1, BGn, NM. Such higher-level processing systems BG1, BGn, NM are, for example, energy management systems, balance group management systems BG1,..., BGn of energy suppliers and / or network management systems NM of network operators.
    According to the method according to the invention, in a first method step 1 of the charging stations LSI, LS2, LSn data on the respective current process states of the respective charging stations LSI, LS2, ..., LSn or the respective units charging station / electric vehicle LSI, LS2, .. ., LSn eg via Power Line Carrier to the data compression systems DVS forwarded or determined by this. This data may include, for example, information on the current state of a charging station LSI, LS2, ..., LSn. That It is determined whether a charging station LSI, LS2, ..., LSn just occupied, free, disturbed, etc. is. Furthermore, the data about the current process states can contain information about a maximum storage capacity of an electric vehicle, a maximum and a current charging power of an electric vehicle, a maximum and actual reactive power of an electric vehicle, an actual storage level of an electric vehicle and / or a balance group affiliation of an electric vehicle or its owner ( ie which energy supplier has been chosen by the owner or with which energy supplier 12 201025211
    Owner is contractually bound} as well as to include a customer level request to a certain point in time.
    These data on the respective current process states of the 5 charging stations LSI, LS2, LSn are then assembled in a second method step 2 from the compaction module VM of the data compression system DVS by means of suitable protocols and methods (eg, simple summation, statistical summation, etc.) corresponding to data units , For example, data units for each affected balance group or balancing group and for one or more affected network operators or network nodes NK can be created. If charging stations LSI, LS2,..., LSn belonging to the data compression system DVS are only arranged at a certain network node NK-15, then e.g. specific data units are generated, in which the current process states of all belonging to this network node NK charging stations LSI, LS2, ..., LSn are included. In a third method step 3, the data units generated in this way are then forwarded to the respectively corresponding, higher-level processing system BG1,..., BGn, NM. The data units are thereby, for example, via a telecommunication connection (eg telecontrol link, 25 etc.) to the corresponding balance and / or energy management systems BG1,..., BGn of the energy suppliers / suppliers concerned or to corresponding network management systems NM of the respective network operators concerned transfer. Of these processing systems BG1, ..., BGn, NM, the data units can then be used for planning, control, regulation, etc. of the power supply or network operation. From the data compression system DVS, the data units may additionally be provided with technical features such as e.g. maximum / current charging power of all aggregates LSI, LS2, ..., LSn, 35 level of the sum of the accumulators of electric vehicles, etc. be supplemented. 13 201025211
    In addition, there is the possibility that, in a fourth method step 4, corresponding specifications and requirements are sent by the higher-order processing systems BG1, BGn, NM as group signals to a data compression system DVS. Thus, for example, from a balance group management system BG1,..., BGn from the viewpoint of a balance group as a group signal, a power requirement for the sum of the charging or discharging power of all of this balance group associated with the power supply can be transmitted. From the point of view of network operation, a possible group signal, e.g. Specifications for a currently maximum allowed charging power, for a desired reactive power, etc. for the entire group of charging stations LSI, LS2, ..., LSn include, which are assigned to a particular network node NK.
    The group signals are then in a fifth method step 5 from the splitting module AM of the data compression system DVS according to suitable distribution methods such. Linear Programming with appropriate constraints and / or preference target functions in case of conflict in target specifications for the respective charging stations LSI, LS2, ..., LSn decomposed. Linear programming or linear optimization is a process from the field of enterprise research in order to optimize certain processes or procedures on the basis of conditions, specifications, etc.
    A linear objective function over a set - here e.g. Charging stations LSI, LS2, ..., LSn, which is limited by linear equations and inequalities optimized. That The best possible or optimal conversion of the group signal to target specifications for the charging stations LSI, LS2,..., LSn is determined by the division module AM.
    In a sixth method step 6, the setpoint specifications determined in this way are then transmitted via a suitable physical connection, such as e.g. Power Line Carrier and using a corresponding protocol (eg TCP / IP, etc.) to the individual charging stations LSI, LS2, ..., LSn and thus also to 201025211 14 • · ι · · · «· *» • ·· · · · · · «« «« «Transmit the electric vehicles. By means of the target specifications, then, e.g. individual charging stations LSI, LS2, LSn switched on and / or off and / or power setpoints and reactive power setpoints for the charging stations LSI, LS2, ..., LSn or for the connected electric vehicles are specified.
    The data compression system DVS thus assumes a kind of intermediary functions between the charging / discharging processes between charging stations LSI, LS2, LSn and electric vehicles and the central processing systems BG1, BGn, NM at energy providers and network operators. The data compression system DVS thus runs as a mediator in a so-called closed-loop operation, from which a provision of energy services {e.g. Energy supply for charging electric vehicles, use of storage capacity, etc.).
    The inventive method can be used for planning, control and management of grid operation and energy management of an energy supplier. However, it can also be oriented only for network operation or for energy management, with charging stations LSI, LS2,..., LSn of several network nodes NK being able to be jointly managed when energy management is targeted. With regard to the charging stations LSI, LS2,..., LSn, the method according to the invention can be used both at charging stations LSI, LS2,..., LSn of the low-voltage range and at charging stations LSI, LS2,. be used from the medium voltage range. Furthermore, the inventive method can also be used in a mixed consumer structure, i. from a network node NK other consumers or power loads are supplied in addition to the charging stations LSI, LS2, ..., LSn.
    权利要求:
    Claims (10)
    [1]
    1. A method for decentralized energy management for charging stations (LSI, LS2, L3, L5, K2). ..., LSn) for electric vehicles, being taken from electric vehicles via the charging stations (LSI, LS2, ..., LSn) energy from a power grid and / or delivered to a power grid, and wherein the loading and / or unloading of a Charging station (LSI, LS2, ..., LSn) and an electric vehicle is formed a unit, characterized in that from a data compression system (DVS) data about each current process states of the respective charging stations (LSI, LS2, LSn) are received and collected ( 1) that then by means of a compaction module (VM) of the data compression system (DVS), these data are combined according to appropriate methods to data units (2), and that the data units thus generated to higher-level processing systems (BG1, ..., BGn, NM), in particular corresponding balance group management systems and / or network operator systems, are forwarded (3).
    [2]
    2. The method according to claim 1, characterized in that suitable specifications as a group signal for the charging stations (LSI, LS2, ..., LSn) from the higher-level processing systems (BG1, ..., BGn, NM) are transmitted (4), that by means of a division module (AM) of the data compression system (DVS), the group signal is decomposed into target specifications for the respective charging stations (LSI, LS2, LSn) (5), and then that the respective target specifications to the corresponding charging stations (LSI, LS2, .. ., LSn) (6).
    [3]
    3. The method according to any one of claims 1 to 2, characterized in that the compression module (VM), the data on the current process conditions, in particular by means of summation, statistical summation of time staggering and / or prioritization of requirements to 201025211 16 • Λ

    φ ··································································································································································
    [4]
    4. The method according to any one of claims 2 to 3, characterized in that the splitting module (AM) the group signal in particular by means of so-called linear programming with suitable constraints and / or with so-called preference target functions in the target specifications for the charging stations (LSI, LS2, LSn ) (5).
    [5]
    5. The method according to any one of the preceding claims, characterized in that by means of compression of the data on the current process states specific data units for each affected balance groups and the associated higher-level processing systems (BG1, ..., BGn, NM) are generated.
    [6]
    6. The method according to any one of the preceding claims, characterized in that by means of compression of the data on the current process states specific data units are generated, in which the current process states of all to a network node (NK) associated charging stations (LSI, LS2, ..., LSn ) are included.
    [7]
    7. The method according to any one of the preceding claims, characterized in that with a data unit generated technical characteristics of the data unit, in particular current and / or maximum charging power of a sum of charging stations (LSI, LS2, ..., LSn), level of the sum of electric vehicles at the charging stations (LSI, LS2, LSn), etc., are sent.
    [8]
    8. The method according to any one of the preceding claims, characterized in that as data on the current process state of a charging station (LSI, LS2, LSn) in particular a current status message, a 17 201025211 • * «· * * · *« »· ι • · W * storage capacity of the electric vehicle, a maximum charging power of the electric vehicle, a maximum reactive power of the electric vehicle, a current storage level, a current charging power, a current reactive power and / or balance group affiliation of the electric vehicle are determined.
    [9]
    9. The method according to any one of the preceding claims, characterized in that as a group signal from each higher-level processing system (BG1, ..., BGn, NM) in particular a dependent on a power generation performance target for all belonging to a balance group electric vehicles and / or a currently allowed maximum charging power and / or desired reactive power for all belonging to a network node charging stations (LSI, LS2, ..., LSn) are given.
    [10]
    10. The method according to any one of the preceding claims, characterized in that as target specifications for the respective charging station (LSI, LS2, ..., LSn) in particular signals for connecting and / or switching off a charging station, a power setpoint for the charging station (LSI, LS2, LSn) and the electric vehicle in the charging and / or discharging direction, a reactive power setpoint for the charging station and the electric vehicle in the loading and / or unloading direction, etc., to the respective charging station (LSI, LS2, ..., LSn) ,
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    申请号 | 申请日 | 专利标题
    ATA2042/2010A|AT510795B1|2010-12-10|2010-12-10|METHOD FOR DECENTRALIZED ENERGY MANAGEMENT FOR CHARGING STATIONS FOR ELECTRIC VEHICLES|ATA2042/2010A| AT510795B1|2010-12-10|2010-12-10|METHOD FOR DECENTRALIZED ENERGY MANAGEMENT FOR CHARGING STATIONS FOR ELECTRIC VEHICLES|
    DE102011087407A| DE102011087407A1|2010-12-10|2011-11-30|Method for distributed energy management for charging stations for electric vehicles, involves assembling collected data into data units, so that generated data units are forwarded to higher-order processing systems|
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