Energy storage station and control method and device for energy storage station

Abstract

The invention provides an energy storage station and a control method and device for the energy storage station, and belongs to the technical field of energy storage, and the method comprises the steps: obtaining scheduling operation information from an operation background terminal through a second data network in a second communication network, wherein the scheduling operation information is generated when the operation background terminal responds to the scheduling operation and is sent from the data server through a second communication network; acquiring energy storage equipment information from a data server through a first data network in the first communication network, wherein the energy storage equipment information is acquired by the energy storage equipment; when it is detected that the energy storage equipment information is full-amount information, preset control logic is obtained, and according to the full-amount information, the preset control logic and the scheduling operation information, the energy storage station is controlled to participate in collection; and when it is detected that the energy storage equipment information is important information, rapidly controlling the energy storage equipment according to the important information, the logic information and the scheduling operation information. The method has the advantages that the transmission rate is increased, and the control timeliness effect is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technologies, specifically to the field of energy storage station control technologies, and particularly to an energy storage station, a control method and device for an energy storage station. Background Art

[0002] As the proportion of energy storage in the power grid increases year by year, more and more requirements are imposed on energy storage power stations. They need to meet various controls and collect and transmit a large amount of data of the energy storage power station. Therefore, a control system and control method for comprehensive control and data transmission are required.

[0003] To meet the requirements of a large amount of data transmission and communication control, in the existing communication topology, the overall data network of the energy storage control system is connected together. However, the inventor found that once the scale of the energy storage power station is large, there will be problems such as a large number of superior devices for scheduling energy storage, different control priorities, different control methods, a huge amount of data, poor control real-time performance, and different control speeds.

[0004] Therefore, there is an urgent need for a control method for an energy storage station to solve the above technical problems. Summary of the Invention

[0005] An energy storage station, a control method and device for an energy storage station provided by an embodiment of this application are used to achieve both ensuring access to different superior device controls and enabling stable and fast communication control, separating control from data acquisition, improving the transmission rate, and also improving the control timeliness effect.

[0006] In a first aspect, an embodiment of this application provides an energy storage station, including: an Energy Management System (EMS) device, a station control and dispatching device, an energy storage device, a first communication network, and a second communication network;

[0007] Among them, the Energy Management System (EMS) device includes a data server, a historical server, an operation background terminal, at least one coordination controller, and an EMS controller; the station control and dispatching device includes a stability control device, a primary frequency modulation device, an active support device, a telecontrol device, a power system stability control device, and a time synchronization device; the energy storage device includes at least one energy management device, at least one Power Conversion System (PCS), and at least one energy storage measurement and control device; the first communication network includes a first data network and a first control network; the second communication network includes a second data network and a second control network;

[0008] The data server, the EMS controller, at least one energy management device, at least one Power Conversion System (PCS), and at least one energy storage measurement and control device are all connected through the first data network; at least one coordination controller, at least one energy management device, at least one Power Conversion System (PCS), and at least one energy storage measurement and control device are all connected through the first control network;

[0009] The EMS controller, data server, historical server, operation background terminal, telecontrol device, power system stability control device, and time synchronization device are all connected through the second data network; at least one coordination controller, EMS controller, stability control device, primary frequency modulation device, and active support device are all connected through the second control network.

[0010] In a second aspect, an embodiment of the present application provides a control method for an energy storage station, which is applied to an EMS device in the energy storage station described in the first aspect. The method includes:

[0011] Obtain dispatching operation information from the operation background terminal through the second data network in the second communication network, where the dispatching operation information is generated by the operation background terminal in response to a dispatching operation and sent through the data server in the second communication network;

[0012] Obtain energy storage device information from the data server through the first data network in the first communication network, where the energy storage device information is collected by the energy storage device;

[0013] When it is detected that the energy storage device information is full-scale information, obtain a preset control logic, and control and participate in the acquisition of the energy storage station according to the full-scale information, the preset control logic, and the dispatching operation information;

[0014] When it is detected that the energy storage device information is important information, perform fast control on the energy storage device according to the important information, the logical information, and the dispatching operation information.

[0015] In a possible implementation manner, the obtaining of the preset control logic includes: obtaining target control information, and determining a preset control logic including control information with multiple different priorities according to the target control information.

[0016] In a possible implementation manner, the target control information includes grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities; correspondingly, determining control information with multiple different priorities according to the target control information includes: performing matching detection processing according to the target control information to obtain a detection result; if conventional dispatching control-related information is matched among the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities, generating level 5 control information; if grid support control-related information is matched among the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities, generating level 4 control information; if grid following response control-related information is matched among the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities, generating level 3 control information; if stabilizer control call-related information is matched among the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities, generating level 2 control information; if whole-station fault control-related information is matched among the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities, generating level 1 control information; determining the level 5 control information, level 4 control information, level 3 control information, level 2 control information, and level 1 control information as a preset control logic including control information with multiple different priorities, where the priority levels of the level 5 control information, level 4 control information, level 3 control information, level 2 control information, and level 1 control information increase in sequence.

[0017] In a possible implementation manner, the whole-station control of the energy storage station according to the full information, the preset control logic, and the dispatching operation information includes: determining the information to be dispatched according to the full information and the dispatching operation information; performing whole-station control on the energy storage station according to the information to be dispatched and the preset control logic.

[0018] In a possible implementation manner, the whole-station control of the energy storage station according to the information to be dispatched and the preset control logic includes: according to the information to be dispatched, first selecting level 5 control information from the preset control logic to perform level 5 control to obtain the whole-station level 5 target power;

[0019] Performing level 4 control according to the level 4 control information and the whole-station level 5 target power to obtain the whole-station level 4 target power;

[0020] Performing level 3 control according to the level 3 control information and the whole-station level 4 target power to obtain the whole-station level 3 target power;

[0021] Performing level 2 control according to the level 2 control information and the whole-station level 3 target power to obtain the whole-station level 2 target power;

[0022] Perform primary control based on the primary control information and the overall station secondary target power to obtain the overall station primary target power;

[0023] Perform power distribution processing on the primary target power to distribute the overall station primary target power to each power conversion system PCS in the energy storage device, and complete the overall station control of the energy storage station.

[0024] In a possible implementation manner, the overall station control includes reactive power control and active power control; wherein, the process of the active power control includes: performing an active power control mode selection operation to obtain the target active power; controlling the grid active power support device to execute the target active power; performing grid-connected power control and executing the active power; controlling the stability control device to execute the active power; when detecting relevant information on overall station fault control, execute the active power to complete power distribution; the process of the reactive power control includes: controlling the SCADA reactive power regulation to obtain the target reactive power; performing grid reactive power support and executing the grid reactive power; performing grid-connected power control and executing the reactive power; controlling the stability control device to execute the active power; when detecting relevant information on overall station fault control, execute the reactive power to complete power distribution.

[0025] In a possible implementation manner, the rapid control of the energy storage station according to the important information, logical information, and the dispatching operation information includes: determining a target control instruction according to the important information, logical information, and the dispatching operation information; sending the target control instruction to the energy storage device through the first control network in the first communication network to perform power control on the energy storage device in the hot standby state or the running state, and complete the rapid control of the energy storage device; sending the target instruction to the station control and dispatching device through the second control network in the second communication network to perform rapid control on the station control and dispatching device.

[0026] In a possible implementation manner, it further includes: obtaining the scale data of the energy storage device; when detecting that the scale data is preset small-scale power station data, directly collect important information for rapid control from the power conversion system in the energy storage device through the first control network.

[0027] In a third aspect, the present application provides a control device for an energy storage station, which is applied to the EMS device in the energy storage station described in the first aspect. The device includes:

[0028] A conventional information acquisition module, configured to obtain dispatching operation information from an operation background terminal through the second data network in the second communication network, where the dispatching operation information is generated by the operation background terminal in response to a dispatching operation and sent from a data server through the second communication network;

[0029] A fast information acquisition module for obtaining energy storage device information from the data server through a first data network in a first communication network, where the energy storage device information is collected by the energy storage device;

[0030] A conventional control module for obtaining a preset control logic when it is detected that the energy storage device information is full information, and controlling and participating in the acquisition of the energy storage station according to the full information, the preset control logic, and the dispatching operation information;

[0031] A fast control module for quickly controlling the energy storage device according to the important information, the logical information, and the dispatching operation information when it is detected that the energy storage device information is important information.

[0032] An energy storage station, a control method and device for the energy storage station provided by an embodiment of the present application, wherein the method realizes direct acquisition and control of the energy storage device by the EMS device through a first communication network in the energy storage station. The first data network in the first communication network is used to collect relevant data for the whole station control, and the first control network is used for fast control and fast acquisition of important information. The internal communication between the data server, the historical server, the operation background terminal, at least one coordination controller and the EMS controller of the EMS device is realized through a second communication network. The present application adopts two-layer communication networks for information acquisition and control among various devices of the energy storage station, which not only ensures communication stability but also ensures fast control, separates control and data acquisition, improves the transmission rate, and also improves the control timeliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0034] Figure 1 It is a schematic diagram of the overall structure of the energy storage station provided by the present application;

[0035] Figure 2 It is a schematic diagram of the flow direction of the data stream in the energy storage station provided by an embodiment of the present application;

[0036] Figure 3 It is a schematic diagram of the flow of the control method for the energy storage station provided by an embodiment of the present application;

[0037] Figure 4 It is a schematic diagram of the flow of active power control and reactive power control provided by the implementation of the present application;

[0038] Figure 5 It is a schematic diagram of the structure of the control device for the energy storage station provided by the present application;

[0039] Figure 6Structural schematic diagram of the EMS controller 115 provided by this application.

[0040] Reference numerals:

[0041] 11 - Energy Management System (EMS) device; 111 - Data server; 112 - Historical server; 113 - Operation background terminal; 114 - Coordination controller; 115 - EMS controller;

[0042] 12 - Substation control and dispatching device; 121 - Stability control device; 122 - Primary frequency modulation device; 123 - Active support device; 124 - Remote terminal unit; 125 - Power system stability control device; 126 - Time synchronization device;

[0043] 13 - Energy storage device; 131 - Energy management device; 132 - Power conversion system; 133 - Energy storage measurement and control device;

[0044] 14 - First communication network; 141 - First data network; 142 - First control network;

[0045] 15 - Second communication network; 151 - Second data network; 152 - Second control network;

[0046] Through the above-mentioned drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0047] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with this application. On the contrary, they are merely examples of devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0048] In the prior art, after a energy storage station such as an energy storage power station is connected to the grid, it is necessary to ensure that it can accept the dispatching of superior equipment from all parties, ensure the stability of the power grid, ensure the safe and stable operation of the energy storage equipment, meet the dispatching of various dispatching equipment added by the power grid power station, and the dispatching control of new equipment that may be added at any time after commissioning. Moreover, various control links conflict with each other and are interlocked. At the same time, in terms of data, it is required that the energy storage management system can collect battery bin data, PCS (Power Conversion System) data, and requires the data to be able to perform functions such as real-time display, storage, and forwarding. As the scale of the energy storage power station increases, the data of the energy storage station can reach the order of millions, and second-level storage is required. The requirements for system network communication and EMS (Energy Management System) data collection are also greater.

[0049] However, through continuous practice, the inventor found that in the prior art, the control aspect and the data aspect share the same network communication, that is, the control signal is sent down through this network, and the data will also be sent down through this network. When the scale of the energy storage station becomes larger, the amount of data increases sharply, resulting in the control signal being aggregated with the transmitted data when it is sent down. This not only reduces the transmission rate but also slows down the speed of the control signal being sent down, resulting in problems such as poor control timeliness, slow control rate, and reduced data transmission stability.

[0050] To solve the above technical problems, the inventor proposed the following inventive concept:

[0051] Adopt a network communication architecture with two layers, both of which include a data network and a control network. One layer of the network communication architecture is used for direct data collection and control of energy storage equipment, and is divided into a data network and a control network. The other layer of the network communication architecture is used for fast control and rapid collection of important information. This not only ensures communication stability but also ensures fast control, and at the same time ensures the safety of the station data.

[0052] Figure 1 The schematic diagram of the overall structure of the energy storage station provided by this application is as Figure 1 shown. The energy storage station includes: an energy management system EMS device 11, a station control and dispatching device 12, an energy storage device 13, a first communication network 14, and a second communication network 15;

[0053] Among them, the energy management system EMS device 11 includes a data server 111, a historical server 112, an operation background terminal 113, at least one coordination controller 114, and an EMS controller 115; the substation control and dispatching device 12 includes a stability control device 121, a primary frequency modulation device 122, an active support device 123, a telecontrol device 124, a power system stability control device 125, and a time synchronization device 126; the energy storage device 13 includes at least one energy management device 131, at least one power conversion system 132, and at least one energy storage measurement and control device 133; the first communication network 14 includes a first data network 141 and a first control network 142; the second communication network 15 includes a second data network 151 and a second control network 152.

[0054] The data server 111, the EMS controller 115, at least one energy management device 131, at least one power conversion system 132, and at least one energy storage measurement and control device 133 are all connected through the first data network 141; at least one coordination controller 114, at least one energy management device 131, at least one power conversion system 132, and at least one energy storage measurement and control device 133 are all connected through the first control network 142.

[0055] The EMS controller 115, the data server 111, the historical server 112, the operation background terminal 113, the telecontrol device 124, the power system stability control device 125, and the time synchronization device 126 are all connected through the second data network 151; at least one coordination controller 114, the EMS controller 115, the stability control device 121, the primary frequency modulation device 122, and the active support device 123 are all connected through the second control network 152.

[0056] In this embodiment, the data server 111 is used for full-scale data acquisition, display, SCADA (Supervisory Control And Data Acquisition) functions (not limited to historical curves, event queries, reports, real-time data viewing, and fault tracing, etc.), and data forwarding. The historical server 112 is used for historical data storage. The operation background terminal 113 is used for the energy storage station control management personnel to issue control instructions. The coordination controller 114 is used for rapid acquisition of grid connection point information and rapid forwarding of active power control instructions and reactive power control instructions. The EMS controller 115 is used to implement functions such as the overall station status control, overall station active power control, overall station reactive power control, fault protection, and storage of important control events.

[0057] In this embodiment, the first communication network 14 is used to implement the direct acquisition and control of the energy storage device 13 by the energy management system EMS device 11. Among them, the first data network 141 is mainly used for the data server 111 to collect the full amount of information, system control, and system parameter configuration of the energy management device 131, the power conversion system 132, and the energy storage measurement and control device 133 in the energy storage device 13.

[0058] In an alternative embodiment of the present application, the energy storage device 13 further includes a transformer system, a fire protection system, a thermal management system, a metering device, an environmental calibration device, and other energy storage components. Therefore, the data server 111 can also collect the full amount of information of these devices through the first data network 141.

[0059] In this embodiment, the EMS controller 115 can also directly collect the logic information for control from the energy management device 131, the power conversion system 132, and the energy storage measurement and control device 133 in the energy storage device 13 through the first data network 141 for the EMS controller 115 to perform station-wide control.

[0060] The first control network 142 is mainly used for rapid control and rapid acquisition of important information, where rapid control refers to the rapid control of the power of the energy storage device 13 in the hot standby state or the operating state.

[0061] Specifically, in an alternative embodiment of the present application, the EMS controller 115 communicates with the coordination controller 114 through the second control network 152 to enable the coordination controller 114 to control the power of each power conversion system 132 in the energy storage device 13. When the overall scale of the energy storage station is small, for example, when the number of energy management devices 131 in the energy storage device 13 is less than 10, the first control network 142 can be directly built between the EMS controller 115 and the power conversion system 132 to achieve the power control of each power conversion system 132 by the EMS controller 115. At this time, in order to ensure the more efficient and rapid operation of the entire energy storage station, the EMS controller 115 will directly collect important information for rapid control from each power conversion system 132 through the first control network 142.

[0062] In this embodiment, the second communication network 15 is used to implement the internal communication between the data server 111, the historical server 112, the operation background terminal 113, at least one coordination controller 114, and the EMS controller 115 in the energy management system EMS device 11, and is also used for external communication and data forwarding. Among them, externally, it can be a data platform or a third-party device that is communicatively connected to the data server 111 of the entire energy storage station.

[0063] In this embodiment, the second data network 151 in the second communication network 15 is used to implement the communication between the data server 111 and the historical server 112, the communication between the data server 111 and the operation background terminal 113, the communication between the data server 111 and the externally related devices, and the communication between the EMS controller 115 and the telecontrol device 124, as well as the communication between the entire energy management system EMS device 11, the entire substation control and dispatching device 12, and the third-party devices.

[0064] In this embodiment, the second control network 152 in the second communication network 15 is used to implement the communication between the EMS controller 115 and the coordination controller 114, the communication between the stability control device 121 and the EMS controller 115, the communication between the primary frequency modulation device 122 and the EMS controller 115, and the communication between the active support device 123 and the EMS controller 115.

[0065] In this embodiment, the power system stability control device 125 may be an automatic generation control AGC / automatic voltage control AVC. The power conversion system 132 may be a PCS.

[0066] Figure 2 It is a schematic diagram of the data flow direction in the energy storage station provided by the embodiment of the present application.

[0067] As Figure 2 shown, to make Figure 1 the working principle of the energy storage station shown more understandable, based on the above embodiment, the data flow direction of the control signals and substation data in the entire energy storage station is described.

[0068] As Figure 2 shown, first, for the collection of conventional information and data between devices and the transmission of control instructions: the operation background terminal 113 generates control instructions in response to the user's dispatching operation. After receiving the control instructions, the data server 111 sends them to the EMS controller 115 through the second control network 152 for internal communication. At the same time, the EMS controller 115 also collects information for the whole station control and information for fast control from the substation control and dispatching device 12 through the second data network 151 and the second control network 152. The full amount of information collected by the energy storage device 13 is sent to the data service area 111 through the first data network 141 for storage to complete the data collection of the full amount of information. At the same time, the EMS controller 115 can also directly collect the logical information of the energy storage device 13 through the first data network 141.

[0069] For rapid control and rapid acquisition of important information: The rapid control can be the rapid control of the power of the energy storage device 13 in the hot standby state or the operating state. The EMS controller 115 directly controls the power of each power conversion system 132 in the energy storage device 13 through the first control network 142. If the scale of the energy storage station is small, in order to ensure the more efficient and rapid operation of the entire energy storage station, the EMS controller 115 will directly collect important information for rapid control from the power conversion system 132 through the first control network 142.

[0070] Figure 3 It is a schematic flowchart of the control method for an energy storage station provided by an embodiment of the present application.

[0071] As Figure 3 shown, the execution subject of the control method for an energy storage station provided by an embodiment of the present application is Figure 1 the EMS controller 115 in the energy storage station shown, of course, it can also be other computer-related devices with the same control function. Regarding this, this embodiment does not make any restrictions here.

[0072] As Figure 3 shown, the control method for the energy storage station includes the following steps:

[0073] S301: Obtain dispatching operation information from the operation background terminal 113 through the second data network 151 in the second communication network 15, where the dispatching operation information is generated by the operation background terminal 113 in response to a dispatching operation and sent from the data server 111 through the second communication network 15.

[0074] In this embodiment, the dispatching operation information can be information related to dispatching control such as the operation instructions issued by local operation and maintenance personnel by the operation background terminal, the selected devices to be dispatched, or receiving different dispatched devices at each time period through pre-setting, etc.

[0075] S302: Obtain energy storage device information from the data server 111 through the first data network 141 in the first communication network 14, where the energy storage device information is collected by the energy storage device 13.

[0076] In this embodiment, the energy storage device information is the full amount of information composed of the logical information collected by the energy storage device and the relevant data for the control of the entire energy storage station.

[0077] S303: When it is detected that the energy storage device information is the full amount of information, obtain the preset control logic, and control and participate in the acquisition of the energy storage station according to the full amount of information, the preset control logic, and the dispatching operation information.

[0078] In an alternative embodiment of the present application, obtaining the preset control logic in step S303 specifically includes:

[0079] S303a: Obtain target control information, and determine a preset control logic including control information with multiple different priorities according to the target control information.

[0080] In an alternative embodiment of the present application, the target control information includes grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities; correspondingly, according to the target control information, determine control information with multiple different priorities, including:

[0081] a1: Perform matching detection processing according to the target control information to obtain a detection result.

[0082] a2: If it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to conventional dispatching control, generate level-five control information;

[0083] In this embodiment, the information related to conventional dispatching control may be the normal dispatching of the energy storage station, such as SCADA dispatching, power station peak shaving dispatching, grid frequency modulation dispatching, third-party planned curve dispatching, cloud platform dispatching, and the dispatching of the entire station sent by other dispatchable devices. The local dispatching can be selected by local operation and maintenance personnel according to needs, or different dispatchers of different dispatch devices can be received in advance at each time period. Finally, the total active power that the entire station needs to execute will be selected from different dispatch devices, and then the next judgment will be entered.

[0084] a3: If it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to grid support control, generate level-four control information.

[0085] In this embodiment, the information related to grid support control may be the control of each grid support device in the energy storage station. When receiving control instructions sent by the primary frequency modulation of the power station, source-network-load-storage, and active support device 123, it is necessary to make a judgment. Generally, one or more grid support devices will call the energy storage. If more than two grid support devices are connected, the station end needs to give the mutual locking logic and limited call order according to the demand, and then judge how to respond to the current instruction according to the demand of the power station device. Response methods such as direct response, instruction superposition response, and adding locking conditions can be selected.

[0086] a4: If it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to grid following response control, generate level-three control information.

[0087] In this embodiment, the information related to grid following response control may be strategies such as power compensation, load following, consumption of system energy, anti-counterflow, and capacity increase. Once the energy management system EMS device 11 activates the above functions, if the activated functions meet the call conditions, the system will recalculate the total active power of the entire station according to the algorithm.

[0088] a5: If information related to stability control call control is matched in the grid command, the urgency of calling the energy storage, the energy storage safety information, the grid frequency and voltage, and the grid connection switch capacity, secondary control information is generated.

[0089] In this embodiment, the information related to stability control call control may be that the stability control device 121 connected to the grid calls the energy storage device 13. Generally, it is required that the energy storage device 13 discharges the grid according to the maximum allowable capacity to ensure grid stability.

[0090] a6: If information related to the entire station fault control is matched in the grid command, the urgency of calling the energy storage, the energy storage safety information, the grid frequency and voltage, and the grid connection switch capacity, primary control information is generated.

[0091] In this embodiment, the information related to the entire station fault control may be information about the failure of the entire energy storage station. For example, faults such as emergency stop and fire. Once the entire station fault is triggered, the entire station needs to be protected, the power is 0, and the energy storage is prohibited from charging and discharging.

[0092] a7: The five-level control information, four-level control information, three-level control information, secondary control information, and primary control information are determined as a preset control logic including control information with multiple different priorities, where the priority levels of the five-level control information, four-level control information, three-level control information, secondary control information, and primary control information increase in sequence.

[0093] In an alternative embodiment of the present application, in step S303, the control participation in the energy storage station is collected according to the full amount of information, the preset control logic, and the dispatching operation information:

[0094] S303b: Determine the information to be dispatched according to the full amount of information and the dispatching operation information.

[0095] S303c: Collect the control participation in the energy storage station according to the information to be dispatched and the preset control logic. In an alternative embodiment of the present application, step S303c specifically includes:

[0096] c1: According to the full amount of information and the dispatching operation information, first select the five-level control information from the preset control logic to execute the five-level control to obtain the five-level target power of the entire station.

[0097] C2: In this embodiment, the dispatching operation information can be selected by local operation and maintenance personnel according to needs for the dispatching to be received, or different dispatching devices can be set in advance to receive dispatching at different time periods. Finally, the total active power that the entire station needs to execute will be selected from different dispatching devices, and then the following judgment will be entered.

[0098] C3: Execute the fourth-level control according to the fourth-level control information and the fifth-level target power of the entire station to obtain the fourth-level target power of the entire station.

[0099] In this embodiment, after receiving the control instructions sent by the primary frequency regulation of the power station, the source-network-load-storage, and the active support device 123, judgment needs to be made. Generally, one or more grid support devices will call the energy storage. If more than two grid support devices are connected, the station side needs to give the mutual locking logic and the limited calling order according to the demand, and then judge how to respond to the current instruction according to the demand of the power station device. It can choose to directly respond, respond by instruction superposition, add locking conditions, etc. Finally, the total active power that the entire station needs to execute is obtained in this step.

[0100] C4: Execute the third-level control according to the third-level control information and the fourth-level target power of the entire station to obtain the third-level target power of the entire station.

[0101] In this embodiment, the operation and maintenance personnel can select the functions to be put into use according to needs. Once the above functions are put into use in the EMS system, if the put-in functions meet the call conditions, the system will recalculate the total active power of the entire station according to the algorithm. The total active power of the entire station is finally obtained in this step.

[0102] C5: Execute the second-level control according to the second-level control information and the third-level target power of the entire station to obtain the second-level target power of the entire station.

[0103] In this embodiment, once the grid stability control device 121 calls the energy storage device 13, it is generally required that the energy storage device 13 discharges the power grid according to the maximum allowable capacity to ensure the stability of the power grid. The total active power of the entire station is finally obtained in this step.

[0104] C6: Execute the first-level control according to the first-level control information and the second-level target power of the entire station to obtain the first-level target power of the entire station.

[0105] In this embodiment, for the entire station failure, such as emergency stop, fire and other failures, once the entire station failure is triggered, the entire station protection is required, the power is 0, and the energy storage is prohibited from charging and discharging.

[0106] C7: Perform power distribution processing on the first-level target power to distribute the first-level target power of the entire station to each power conversion system 132 in the energy storage device, and complete the control participation acquisition of the energy storage station.

[0107] In this embodiment, the power distribution may be the final overall station power finally obtained according to the above five-level control. According to the SOC, current capacity, maximum charge and discharge power, and other parameters of each energy storage unit, the operating power of each energy storage unit is automatically distributed. The power distribution may be the final overall station power finally obtained by the system according to the above five-level control. According to the SOC, current capacity, maximum charge and discharge power, and other parameters of each energy storage unit, the operating power of each energy storage unit is automatically distributed. The participation in data collection may be the collection of the operating parameters of the energy storage units and other related devices in the energy storage station, such as the charge and discharge power of the energy storage units.

[0108] Figure 4 It is a schematic flow chart of the active power control and reactive power control provided by the embodiment of the present application.

[0109] As Figure 4 shown, based on the above embodiment, in an optional embodiment of the present application, the overall station control includes active power control and reactive power control. Among them, the process of active power control includes:

[0110] Step (1): Perform an active power control mode selection operation to obtain the target active power;

[0111] Step (2): Control the grid active power support device to execute the target active power;

[0112] Step (3): Perform grid-connected power control and execute the active power;

[0113] Step (4) Control the stability control device to execute the active power;

[0114] Step (5): When the overall station fault control related information is detected, execute the active power to complete the power distribution.

[0115] The process of reactive power control includes:

[0116] Step (a): Control the SCADA reactive power regulation to obtain the target reactive power;

[0117] Step (b): Perform grid reactive power support and execute the grid reactive power;

[0118] Step (c): Perform grid-connected power control and execute the reactive power;

[0119] Step (d): Control the stability control device to execute the active power;

[0120] Step (e): When the overall station fault control related information is detected, execute the reactive power to complete the power distribution.

[0121] S304: When it is detected that the energy storage device information is important information, the energy storage station is quickly controlled according to the important information, logical information, and dispatching operation information.

[0122] In this embodiment, the important information may be information related to the energy storage device 13 collected by the power conversion system 132 in the energy storage device 13 for rapid control. For example, when a fault occurs, the important information may be that the power of the energy storage device is 0. The important information may also be the station-level information fed back by the stability control device 121, the primary frequency modulation device 122, and the active support device 123 in the station control and dispatching device 12.

[0123] In an alternative embodiment of the present application, step S304 includes:

[0124] S304a: Determine a target control instruction according to the important information, the logical information, and the dispatching operation information.

[0125] 304b: Send the target control instruction to the energy storage device 13 through the first control network 142 in the first communication network 14 to perform power control on the energy storage device 13 in the hot standby state or the operating state, and complete the rapid control of the energy storage device 13.

[0126] 304c: Send the target instruction to the station control and dispatching device 12 through the second control network 152 in the second communication network 15 to perform rapid control on the station control and dispatching device 12.

[0127] In this embodiment, the sending process of the target instruction is the same as the Figure 2 transmission process of the data stream in the illustrated embodiment and has been described, so it will not be elaborated here in this embodiment.

[0128] Based on the above embodiment, in an alternative embodiment of the present application, the control method for an energy storage station further includes:

[0129] Step A: Obtain the scale data of the energy storage device.

[0130] In this embodiment, the scale data of the energy storage device 13 may be

[0131] Step B: When it is detected that the scale data is the preset small-scale power station data, directly collect the important information for rapid control from the power conversion system 132 in the energy storage device through the first control network 142.

[0132] In this embodiment, to ensure the more efficient and rapid operation of the entire energy storage station, the EMS controller 115 can also directly collect the important information for rapid control from the power conversion system 132 in the energy storage device 13 through the first control network 142 and directly issue the rapid control instruction for controlling the energy storage device 13. To cope with emergency or important energy storage station control scenarios.

[0133] In summary, the control method for an energy storage station provided by the embodiments of the present application realizes the direct acquisition and control of the energy storage device 13 by the energy management system EMS device 11 through the first communication network 14 in the energy storage station. The first data network 141 in the first communication network 14 is used to collect relevant data for the overall station control, and the first control network 142 is used for fast control and fast acquisition of important information. The internal communication between the data server 111, the historical server 112, the operation background terminal 113, at least one coordination controller 114, and the EMS controller 115 of the energy management system EMS device 11 is realized through the second communication network 15. The present application adopts a two-layer communication network for information acquisition and control among various devices in the energy storage station, which not only ensures communication stability but also ensures fast control, separates control from data acquisition, improves the transmission rate, and also improves the control timeliness.

[0134] At the same time, through a preset control logic, the entire control architecture and level are made clearer, the execution order of the control process can be distinguished according to the priority, and the subsequent application stage for device scheduling and the process of intervening in the device are made clearer.

[0135] Figure 5 It is a schematic structural diagram of the control device for an energy storage station provided by the present application, as Figure 5 shown. The device provided in this embodiment is applied to the energy management system EMS device 11 in the energy storage station as Figure 1 shown. The device includes: a conventional information acquisition module 51, a fast information acquisition module 52, a conventional control module 53, and a fast control module 54.

[0136] The conventional information acquisition module 51 is used to obtain scheduling operation information from the operation background terminal 113 through the second data network 151 in the second communication network 15, where the scheduling operation information is generated by the operation background terminal 113 in response to a scheduling operation and sent from the data server 111 through the second communication network 15.

[0137] The fast information acquisition module 52 is used to obtain energy storage device information from the data server through the first data network in the first communication network 14, where the energy storage device information is collected by the energy storage device.

[0138] The conventional control module 53 is used to obtain a preset control logic when it detects that the energy storage device information is full information, and participate in the control of the energy storage station according to the full information, the preset control logic, and the scheduling operation information.

[0139] The fast control module 54 is used to perform fast control on the energy storage device according to the important information, the logical information, and the scheduling operation information when it detects that the energy storage device information is important information.

[0140] In an alternative embodiment of the present application, the conventional control module 53 is specifically configured to: obtain target control information, and determine a preset control logic including control information with multiple different priorities according to the target control information.

[0141] In an alternative embodiment of the present application, the target control information includes grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities; correspondingly, the conventional control module 53 is further specifically configured to: perform matching detection processing according to the target control information to obtain a detection result; if it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to conventional dispatching control, generate level-five control information; if it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to grid support control, generate level-four control information; if it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to grid following response control, generate level-three control information; if it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to stability control call control, generate level-two control information; if it is detected that the grid instructions, the urgency of calling the energy storage, energy storage safety information, grid frequency and voltage, and grid connection switch capabilities match the information related to whole-station fault control, generate level-one control information; determine the level-five control information, level-four control information, level-three control information, level-two control information, and level-one control information as the preset control logic including control information with multiple different priorities, where the priority levels of the level-five control information, level-four control information, level-three control information, level-two control information, and level-one control information increase in sequence.

[0142] In an alternative embodiment of the present application, the conventional control module 53 is specifically configured to: determine the information to be dispatched according to the full amount of information and dispatching operation information; perform whole-station control on the energy storage station according to the information to be dispatched and the preset control logic.

[0143] In an optional embodiment of the present application, the conventional control module 53 is specifically configured to: according to the scheduling information to be processed, first select five-level control information from the preset control logic to execute five-level control, so as to obtain the five-level target power of the entire station; execute four-level control according to the four-level control information and the five-level target power of the entire station to obtain the four-level target power of the entire station; execute three-level control according to the three-level control information and the four-level target power of the entire station to obtain the three-level target power of the entire station; execute second-level control according to the second-level control information and the three-level target power of the entire station to obtain the second-level target power of the entire station; execute first-level control according to the first-level control information and the second-level target power of the entire station to obtain the first-level target power of the entire station; perform power distribution processing on the first-level target power to distribute the first-level target power of the entire station to each power conversion system 132 in the energy storage device, thereby completing the overall control of the energy storage station.

[0144] In an optional embodiment of the present application, the overall control of the conventional control module 53 for overall station control includes reactive power control and active power control; among them, the process of active power control includes: performing an active power control mode selection operation to obtain the target active power; controlling the grid active power support device to execute the target active power; performing grid-connected power control and executing the active power; controlling the stability control device 121 to execute the active power; when detecting relevant information related to overall station fault control, execute the active power to complete power distribution; the process of reactive power control includes: controlling the SCADA reactive power regulation to obtain the target reactive power; performing grid reactive power support and executing the grid reactive power; performing grid-connected power control and executing the reactive power; controlling the stability control device 121 to execute the active power; when detecting relevant information related to overall station fault control, execute the reactive power to complete power distribution.

[0145] In an optional embodiment of the present application, the fast control module 54 is specifically configured to: determine the target control instruction according to the important information, logical information, and scheduling operation information; send the target control instruction to the energy storage device through the first control network 142 in the first communication network 14 to perform power control on the energy storage device 13 in the hot standby state or the operating state, thereby completing the fast control of the energy storage device 13; send the target instruction to the station control and scheduling device 12 through the second control network 152 in the second communication network 15 to perform fast control on the station control and scheduling device 12.

[0146] In an optional embodiment of the present application, the fast control module 54 is further configured to: obtain the scale data of the energy storage device; when detecting that the scale data is the preset small-scale power station data, directly collect the important information for fast control from the power conversion system 132 in the energy storage device 13 through the first control network 142.

[0147] The control device for the energy storage station provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effects are similar, which will not be elaborated here in this embodiment.

[0148] Figure 6 This is a schematic structural diagram of the EMS controller 115 provided for this application. As Figure 6 shown, the EMS controller 115 provided in this embodiment includes: at least one processor 1151 and a memory 1152. Optionally, the EMS controller 115 further includes a communication component 1153. Among them, the processor 1151, the memory 1152, and the communication component 1153 are connected through a bus 1154.

[0149] In the specific implementation process, at least one processor 1151 executes the computer-executable instructions stored in the memory 1152, so that at least one processor 1151 executes the above-mentioned method.

[0150] For the specific implementation process of the processor 1151, reference can be made to the above method embodiment, and its implementation principle and technical effects are similar, so they will not be elaborated here in this embodiment.

[0151] This application embodiment also provides a computer-readable storage medium, in which computer-executable instructions are stored. When the processor executes the computer-executable instructions, the control method for the energy storage station as described above is implemented.

[0152] This application embodiment also provides a computer program product, including a computer program, which implements the control method for the energy storage station as described above when executed by the processor.

[0153] In the above embodiment, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, abbreviated: CPU), and may also be other general-purpose processors, digital signal processors (English: Digital Signal Processor, abbreviated: DSP), application-specific integrated circuits (English: Application Specific Integrated Circuit, abbreviated: ASIC), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by the execution of the hardware processor, or can be implemented by the combination of the hardware and software modules in the processor.

[0154] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk memory.

[0155] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

[0156] This application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0157] This application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When the processor executes the computer-executable instructions, the above method is implemented.

[0158] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disc. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0159] An exemplary readable storage medium is coupled to the processor, enabling the processor to read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an Application Specific Integrated Circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0160] The division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in electrical, mechanical, or other forms.

[0161] The unit described as a separation component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place or distributed across multiple network units. Some or all of these units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0162] In addition, in each embodiment of the present invention, each functional unit may be integrated in a processing unit, may exist physically separately for each unit, or two or more units may be integrated in one unit.

[0163] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical disks, and other various media that can store program codes.

[0164] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When this program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disks, or optical disks, and other various media that can store program codes.

[0165] Finally, it should be noted that: After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other implementation schemes of the present invention. The present invention aims to cover any variations, uses, or adaptive changes of the present invention. These variations, uses, or adaptive changes follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field of the present invention that are not disclosed in the present invention. It is not limited to the exact structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. An energy storage station, characterized in that: include: Energy management system EMS equipment, station control and dispatching equipment, energy storage equipment, first communication network and second communication network; Among them, the energy management system EMS equipment includes a data server, a history server, an operation background terminal, at least one coordination controller and an EMS controller; the station control and dispatching equipment includes a stabilization control device, a primary frequency modulation device, an active support device, a telecontrol device, a power system stability control device and a timing device; the energy storage equipment includes at least one energy management device, at least one power conversion system PCS and at least one energy storage measurement and control device; the first communication network includes a first data network and a first control network; the second communication network includes a second data network and a second control network; The data server, the EMS controller, at least one energy management device, at least one power conversion system PCS and at least one energy storage measurement and control device are all connected through a first data network; at least one coordination controller, at least one energy management device, at least one power conversion system PCS and at least one energy storage measurement and control device are all connected through a first control network; The EMS controller, data server, history server, operation background terminal, telecontrol device, power system stability control device and timing device are all connected through a second data network; at least one coordination controller, EMS controller, stability control device, primary frequency modulation device and active support device are all connected through a second control network.

2. A control method for an energy storage station, characterized in that: Applied to the EMS device in the energy storage station as claimed in claim 1, the method comprising: Obtaining scheduling operation information from the operation background terminal through the second data network in the second communication network, wherein the scheduling operation information is generated by the operation background terminal in response to the scheduling operation and sent from the data server through the second communication network; Acquire energy storage device information from the data server through a first data network in a first communication network, wherein the energy storage device information is collected by the energy storage device; When it is detected that the energy storage device information is full information, a preset control logic is obtained, and the energy storage station is controlled to participate in the collection according to the full information, the preset control logic and the scheduling operation information; When it is detected that the energy storage device information is important information, the energy storage device is quickly controlled according to the important information, logic information and the scheduling operation information.

3. The method according to claim 2, characterized in that The obtaining of the preset control logic includes: obtaining target control information, and determining, according to the target control information, a preset control logic including a plurality of control information of different priorities.

4. The method according to claim 3, characterized in that The target control information includes grid instructions, urgency of calling energy storage, energy storage safety information, grid frequency and voltage, and grid-connected switch capacity; accordingly, the control information of multiple different priorities is determined according to the target control information, including: Perform matching detection processing according to the target control information to obtain a detection result; If the grid command, the urgency of calling energy storage, energy storage safety information, grid frequency and voltage, and grid-connected switch capability match conventional dispatch control related information, five-level control information is generated; If the grid support control related information is detected to match the grid instruction, the urgency of calling energy storage, the energy storage safety information, the grid frequency and voltage, and the grid-connected switch capability, the fourth-level control information is generated; If the grid instruction, the urgency of calling energy storage, energy storage safety information, grid frequency and voltage, and grid-connected switch capability match the grid follow-up response control related information, three-level control information is generated; If the grid command, the urgency of calling energy storage, energy storage safety information, grid frequency and voltage, and grid-connected switch capability match the stabilization call control related information, secondary control information is generated; If the grid command, the urgency of calling energy storage, energy storage safety information, grid frequency and voltage, and grid-connected switch capability match the whole-station fault control related information, primary control information is generated; The five-level control information, four-level control information, three-level control information, two-level control information and one-level control information are determined as a preset control logic containing control information of multiple different priorities, wherein the priorities of the five-level control information, four-level control information, three-level control information, two-level control information and one-level control information are increased in sequence.

5. The method according to claim 4, characterized in that The whole station control of the energy storage station according to the full amount information, the preset control logic and the scheduling operation information includes: Determine the information to be scheduled according to the full amount information and the scheduling operation information; The energy storage station is controlled as a whole according to the information to be dispatched and the preset control logic.

6. The method according to claim 5, characterized in that The whole station control of the energy storage station according to the information to be dispatched and the preset control logic includes: According to the information to be scheduled, firstly select five-level control information from the preset control logic to perform five-level control, and obtain the five-level target power of the whole station; Performing four-level control according to the four-level control information and the five-level target power of the entire station to obtain the four-level target power of the entire station; Performing the third-level control according to the third-level control information and the fourth-level target power of the entire station to obtain the third-level target power of the entire station; Performing secondary control according to the secondary control information and the third-level target power of the entire station to obtain the second-level target power of the entire station; Performing primary control according to the primary control information and the secondary target power of the entire station to obtain the primary target power of the entire station; The first-level target power is subjected to power distribution processing to distribute the first-level target power of the entire station to each power conversion system PCS in the energy storage device, thereby completing the entire station control of the energy storage station.

7. The method according to claim 2, characterized in that The whole station control includes reactive power control and active power control; The active power control process includes: Execute active power control mode selection operation to obtain target active power; Control the active power support device of the power grid to execute the target active power; Conduct grid-connected power control and execute active power; Control the stabilization device to execute active power; When the relevant information of the whole station fault control is checked, the active power is executed to complete the power distribution; The reactive power control process includes: Control SCADA reactive power regulation to obtain target reactive power; Carry out grid reactive support and execute grid reactive power; Conduct grid-connected power control and execute reactive power; Control the stabilization device to execute active power; When the relevant information of the whole station fault control is checked, reactive power is executed to complete the power distribution.

8. The method according to claim 2, characterized in that: The rapid control of the energy storage station according to the important information, the logic information and the scheduling operation information includes: Determining a target control instruction according to the important information, the logic information and the scheduling operation information; The target control instruction is sent to the energy storage device through the first control network in the first communication network to perform power control on the energy storage device in a hot standby state or in an operating state, thereby completing rapid control of the energy storage device; The target instruction is sent to the station control and dispatching equipment through the second control network in the second communication network to quickly control the station control and dispatching equipment.

9. The method according to any one of claims 2 to 8, characterized in that Also includes: Obtaining the scale data of energy storage equipment; When it is detected that the scale data is preset small-scale power station data, important information for rapid control is directly collected from the power conversion system in the energy storage device through the first control network.

10. A control device for an energy storage station, characterized in that: The EMS device used in the energy storage station according to claim 1 comprises: A conventional information collection module, which acquires scheduling operation information from the operation background terminal through a second data network in the second communication network, wherein the scheduling operation information is generated by the operation background terminal in response to the scheduling operation and sent from the data server through the second communication network; A fast information collection module, used to obtain energy storage device information from the data server through a first data network in a first communication network, wherein the energy storage device information is collected by the energy storage device; A conventional control module, for obtaining a preset control logic when detecting that the energy storage device information is full information, and controlling the energy storage station to participate in the collection according to the full information, the preset control logic and the scheduling operation information; The rapid control module is used to quickly control the energy storage device according to the important information, logic information and the scheduling operation information when it is detected that the energy storage device information is important information.

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