CN112670986A - Energy storage station PCS simulation operation method - Google Patents
Energy storage station PCS simulation operation method Download PDFInfo
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- CN112670986A CN112670986A CN202011540699.2A CN202011540699A CN112670986A CN 112670986 A CN112670986 A CN 112670986A CN 202011540699 A CN202011540699 A CN 202011540699A CN 112670986 A CN112670986 A CN 112670986A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The invention discloses a simulation operation method for a power storage station (PCS), which relates to the technical field of energy storage simulation and is used for solving the problem of difficulty in simulation of the equipment of the conventional energy storage station, and comprises the following steps: modeling by a PCS virtual device; initializing the virtual device; the virtual device receives a simulation instruction; changing the operation parameters of the virtual device according to the simulation instruction, and executing a simulation task corresponding to the simulation instruction; when the simulation task is executed and a shutdown instruction is received, closing the virtual device; and when the simulation task is executed completely and a shutdown instruction is not received, continuously receiving the simulation instruction. The simulation is completed through the virtual device by modeling the PCS virtual device, and the control logic requirements of the automatic test system and the energy storage monitoring system in various control services and the automatic test requirements in the service process are met.
Description
Technical Field
The invention relates to the technical field of energy storage simulation, in particular to a PCS simulation operation method for an energy storage station.
Background
The electrochemical energy storage is used as one of various energy storage forms, and has the characteristics of mature technology, short construction period, high regulation speed, accurate control and the like, so that the electrochemical energy storage becomes an ideal tool for various services such as power grid peak regulation, frequency modulation, standby, black start, demand response support and the like.
With the successive departure of the operation rules of the auxiliary service markets such as peak shaving, frequency modulation and the like in each area, the items of the energy storage stations at the power supply side and the power grid side are increased explosively, the peak-to-summer power supply pressure of the power grid is effectively relieved with the increase of the item quantity, the peak shaving and frequency modulation capacity is improved, and support is provided for the large-scale utilization of renewable energy.
The primary equipment of the energy storage station has the characteristics of large volume and high working voltage, so that the primary equipment is difficult to deploy in a laboratory; after the energy storage station is put into operation, the requirement that the test needs to be frequently carried out is difficult to meet. In addition, in the process of putting the energy storage station into operation, the AGC (Automatic Generation Control)/AVC (Automatic Voltage Control) function needs to be coordinated with the scheduling after power transmission, and when a problem occurs in the operation process and needs to be repeatedly repaired and modified, the problem may cause adverse effect on the safe and stable operation of the power system, and the operation efficiency of the energy storage station may also be reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a simulation operation method for a power storage station (PCS), which is used for modeling through a PCS virtual device and further completing the simulation operation of the PCS of the power storage station so as to meet the control logic requirements of an automatic test system and an energy storage monitoring system on various control services and the automatic test requirements of a service process.
The purpose of the invention is realized by adopting the following technical scheme:
a simulation operation method for a power storage station PCS (Power conversion System), comprising the following steps:
modeling by a PCS virtual device;
initializing the virtual device;
the virtual device receives a simulation instruction;
changing the operation parameters of the virtual device according to the simulation instruction, and executing a simulation task corresponding to the simulation instruction;
when the simulation task is executed and a shutdown instruction is received, closing the virtual device;
and when the simulation task is executed completely and a shutdown instruction is not received, continuously receiving the simulation instruction.
Further, the modeling process of the PCS virtual device is as follows:
loading and analyzing an SCD (substation configuration description) or ICD (interface control document) model information file to obtain a virtual device structure and communication characteristics;
constructing an organization structure model and an internal relation model of the virtual device according to the virtual device structure;
and constructing an MMS server simulation model of the virtual device, and simultaneously perfecting the external communication parameters of the MMS server simulation model according to the communication characteristics.
Further, initializing the virtual device comprises the following steps:
receiving a starting-up instruction;
setting the running state of the virtual device as a standby state according to the starting instruction;
and initializing the operation parameters of the virtual device, and releasing remote measurement and remote signaling blocking.
Further, the boot instruction and the emulation instruction are received from an EMS system.
Further, the simulation instruction comprises an active power regulation instruction and a reactive power regulation instruction.
Further, the operation parameters are PCS parameters, including a bus voltage value, a three-phase current value, total active/reactive power, a three-phase power factor, charge/discharge capacity and a PCS state.
Further, when the simulation instruction is an active power regulation instruction, the bus voltage value is adjusted to 370 plus/minus 2 random floating, and the three-phase current value is adjusted to Ps × 1000/370/3 plus/minus 2 random floating; adjusting the total active power to be Ps plus positive and negative 2 random floating, keeping the total reactive power unchanged, and obtaining the three-phase power factor by calculating P/S, wherein Ps is an active power adjustment instruction value, P is active power, and S is apparent power; adjusting the charge/discharge amount to 0; when the active power is adjusted to be positive, a discharging task is executed, and the PCS state is discharging; when the active power is adjusted to be a negative number, a charging task is executed, and the PCS state is charging;
when the simulation instruction is a reactive power regulation instruction, keeping the bus voltage value, the three-phase current value, the total active power and the charge/discharge capacity unchanged; adjusting the total reactive power to be Qs plus or minus 2 random floating; the three-phase power factor is obtained by calculating P/S, and Qs is a reactive power regulation instruction value.
Further, the simulation instruction further comprises fault state simulation, and when the simulation instruction is the fault state simulation, a set of fault state simulation parameters and section triggering time is received.
Further, the virtual device includes a human interface module from which the set of fault state simulation parameters and the section trigger time is received.
And further, when the virtual device is closed, remote measurement and remote signaling data uploading are blocked.
Compared with the prior art, the invention has the beneficial effects that:
the invention is based on the PCS virtual device, realizes the change of the PCS operation parameters through the PCS virtual device, realizes the simulation, meets the control logic requirements of an automatic test system and an energy storage monitoring system under various control services such as AGC, AVC, plan tracking and other modes and the automatic test requirements of the service process, and can be carried out in a laboratory without influencing the equipment of an energy storage station; the platform support is provided for network architecture and operation control of the energy storage power station, the important promotion effect is played on construction and operation of the energy storage station, and multiple concurrent equipment operation can be realized through concurrent communication protocol connection, and actual scene simulation of the energy storage stations of different scales is realized.
Drawings
Fig. 1 is a schematic diagram of a tank station PCS simulation operation method according to a first embodiment of the present invention;
fig. 2 is a flowchart of a power storage station PCS simulation operation method according to a first embodiment of the present invention.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying drawings, in which the description of the invention is given by way of illustration and not of limitation. The various embodiments may be combined with each other to form other embodiments not shown in the following description.
Example one
The embodiment I provides a simulation operation method for a power storage station PCS (Power conversion System), which aims to perform simulation operation on the power storage station PCS through a PCS virtual device to complete tasks such as automatic testing, information interaction and the like.
Referring to fig. 1 and fig. 2, a method for operating a PCS simulation of an energy storage station includes the following steps:
s1, modeling by the PCS virtual device;
in order to complete the simulation operation of the energy storage station PCS, the modeling process of the PCS virtual device is as follows:
loading and analyzing an SCD (substation configuration description) or ICD (interface control document) model information file, wherein the format of the file is xml, and obtaining the structure and the communication characteristics of a virtual device;
constructing an organization structure model and an internal relation model of the virtual device according to the virtual device structure;
and constructing an MMS server simulation model of the virtual device, and simultaneously perfecting the external communication parameters of the MMS server simulation model according to the communication characteristics.
Scd (stabilization Configuration description) is a Configuration file of an intelligent substation total station, and includes all information of the intelligent substation. The method adopts an XML language description format to describe the primary system structure of the intelligent substation, instance configuration information of all IEDs, the positions and addresses of communication access points and the like.
Icd (IED Capability description) refers to an IED Capability description file, which is mainly used for describing functions, engineering capabilities, and the like of the IED.
IED (intelligent Electronic device) refers to an intelligent Electronic device mainly including power equipment, a transformer, a capacitor, power system equipment, and the like, and the IED is mainly used to represent a controller for controlling power in a virtual device.
Mms (manual Message specification) refers to a manufacturing Message specification, which is a set of independent international standard Message specifications established by the international organization for standardization ISO industrial automation technical committee TC184 for developing and maintaining an industrial automation system.
S2, initializing the virtual device;
the operating parameters of the virtual devices are PCS parameters such as bus voltage value, three-phase current value, total active/reactive power, three-phase power factor, charge/discharge amount, etc., and PCS state.
The initialization in S2 is performed when the power-on instruction is received, and includes the specific steps of:
receiving a starting-up instruction;
according to the starting-up instruction, keeping the running state of the virtual device as a standby state;
and initializing the operation parameters of the virtual device, and releasing remote measurement and remote signaling blocking.
The starting instruction and the simulation instruction in the embodiment are both received from an EMS system, namely an energy management system, and are mainly used for controlling and scheduling the system; the EMS system is deployed on the system server and controls and monitors the running state of the virtual device.
The remote measurement and remote signaling refer to analog quantity signals and state quantity signals of the PCS virtual device respectively.
The operating parameters initialized in S2 are referred to in table 1.1.
TABLE 1.1 initial operating parameters
| PCS parameters | Value of |
| AB bus voltage | 370 |
| BC bus voltage | 370 |
| Voltage of CA bus | 370 |
| Phase A current | 0 |
| Phase B current | 0 |
| C-phase current | 0 |
| Total active power | 0 |
| Total reactive power | 0 |
| Three-phase power factor | 1 |
| Daily charge | 0 |
| Amount of daily discharge | 0 |
| PCS State | 2 Standby |
S3, the virtual device receives a simulation instruction;
the simulation instruction comprises an active power regulation instruction and a reactive power regulation instruction. Of course, the active power adjustment instruction further includes a discharge instruction and a charge instruction, the main logic is "positive number discharge and negative number charge", and the specific parameters can be adjusted by setting a data processing module on the virtual device.
Referring to table 1.2 and table 1.3, when the simulation instruction is active power adjustment, the bus voltage value is adjusted to 370 plus/minus 2 random floating, and the three-phase current value is adjusted to Ps × 1000/370/3 plus/minus 2 random floating; adjusting the total active power to be Ps plus positive and negative 2 random floating, keeping the total reactive power unchanged, and obtaining the three-phase power factor by calculating P/S, wherein Ps is an active power adjustment instruction value, P is active power, and S is apparent power; adjusting the charge/discharge amount to 0; and when the active power is adjusted to be a negative number, the charging task is executed.
TABLE 1.2 Charge response
| PCS parameters | Value of |
| AB bus voltage | 370 plus and minus 2 random float |
| BC bus voltage | 370 plus and minus 2 random float |
| Voltage of CA bus | 370 plus and minus 2 random float |
| Phase A current | Ps 1000/370/3, plus or minus 2 random floats |
| Phase B current | Ps 1000/370/3, plus or minus 2 random floats |
| C-phase current | Ps*1000/370/3, plus or minus 2 random floating |
| Total active power | Ps plus minus 2 random floating |
| Total reactive power | Is kept unchanged |
| Three-phase power factor | P/S |
| Daily charge | 0 |
| Amount of daily discharge | 0 |
| PCS State | 3 charging |
TABLE 1.3 discharge response
Referring to table 1.4, when the simulation instruction is a reactive power adjustment instruction, the bus voltage value, the three-phase current value, the total active power, and the charge/discharge amount are kept unchanged; adjusting the total reactive power to be Qs plus or minus 2 random floating; the three-phase power factor is obtained by calculating P/S, and Qs is a reactive power regulation instruction value.
TABLE 1.4 reactive Regulation dynamic response
| PCS parameters | Value of |
| AB bus voltage | Is kept unchanged |
| BC bus voltage | Is kept unchanged |
| Voltage of CA bus | Is kept unchanged |
| Phase A current | Is kept unchanged |
| Phase B current | Is kept unchanged |
| C-phase current | Is kept unchanged |
| Total active power | Is kept unchanged |
| Total reactive power | Qs plus minus 2 random float |
| Three-phase power factor | P/S |
| Daily charge | Is kept unchanged |
| Amount of daily discharge | Is kept unchanged |
| PCS State | Is kept unchanged |
Simulations will also typically include various faults in the operation of the PCS, such as over-frequency, over-voltage, over-current, overload, over-temperature, insulation faults, etc.; therefore, the simulation instruction further includes fault state simulation, and at this time, not only the fault state simulation parameters but also the section trigger time set need to be received.
Because the parameters and section triggering time of different faults are different, a manual interface module is further arranged on the virtual device so as to receive various parameters set manually.
S4, changing the operation parameters of the virtual device according to the simulation instruction, and executing a simulation task corresponding to the simulation instruction;
in S4, after the parameter setting is completed, the simulation operation is performed by the data simulation module in the virtual device.
S5, when the simulation task is executed and a shutdown instruction is received, closing the virtual device;
and when the simulation task is executed completely and a shutdown instruction is not received, continuously receiving the simulation instruction.
If the shutdown command is not received in S5, the process returns to S2.
It should be noted that, the above steps S1-S5 are all performed in the PCS virtual device, and the PCS virtual device in this embodiment is specifically independent or present in some electronic device, which is not limited in this embodiment.
It should be noted that, in the foregoing embodiment, each unit or module mentioned in the virtual device is only divided according to functional logic, for example, the data processing module, the human interface module, and the like in the embodiment, but is not limited to the above division as long as the corresponding function can be implemented; in addition, the specific names of the functional unit modules are only for convenience of distinguishing from each other and are not used for limiting the protection scope of the present invention.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (10)
1. The energy storage station PCS simulation operation method is characterized by comprising the following steps:
modeling by a PCS virtual device;
initializing the virtual device;
the virtual device receives a simulation instruction;
changing the operation parameters of the virtual device according to the simulation instruction, and executing a simulation task corresponding to the simulation instruction;
when the simulation task is executed and a shutdown instruction is received, closing the virtual device;
and when the simulation task is executed completely and a shutdown instruction is not received, continuously receiving the simulation instruction.
2. The energy storage station PCS simulation operation method of claim 1 wherein the modeling of the PCS virtual device is performed as follows:
loading and analyzing an SCD (substation configuration description) or ICD (interface control document) model information file to obtain a virtual device structure and communication characteristics;
constructing an organization structure model and an internal relation model of the virtual device according to the virtual device structure;
and constructing an MMS server simulation model of the virtual device, and simultaneously perfecting the external communication parameters of the MMS server simulation model according to the communication characteristics.
3. The energy storage station PCS simulation operating method of claim 1 wherein initializing the virtual device comprises the steps of:
receiving a starting-up instruction;
according to the starting-up instruction, keeping the running state of the virtual device as a standby state;
and initializing the operation parameters of the virtual device, and releasing remote measurement and remote signaling blocking.
4. The energy storage station PCS simulation operating method of claim 3 wherein the power-on command and the simulation command are received from an EMS system.
5. The energy storage station PCS simulation operating method of claim 1 wherein the simulation instructions include real power adjustment instructions and reactive power adjustment instructions.
6. The energy storage station PCS simulation operating method of claim 1 wherein the operating parameters are PCS parameters including bus voltage value, three phase current value, total active/reactive power, three phase power factor, charge/discharge amount and PCS status.
7. The energy storage station PCS simulation operation method according to claim 6, wherein when the simulation instruction is an active power adjustment instruction, the bus voltage value is adjusted to 370 plus minus 2 random floating, and the three-phase current value is adjusted to Ps 1000/370/3 plus minus 2 random floating; adjusting the total active power to be Ps plus positive and negative 2 random floating, keeping the total reactive power unchanged, and obtaining the three-phase power factor by calculating P/S, wherein Ps is an active power adjustment instruction value, P is active power, and S is apparent power; adjusting the charge/discharge amount to 0; when the active power is adjusted to be positive, a discharging task is executed, and the PCS state is discharging; when the active power is adjusted to be a negative number, a charging task is executed, and the PCS state is charging;
when the simulation instruction is a reactive power regulation instruction, keeping the bus voltage value, the three-phase current value, the total active power and the charge/discharge capacity unchanged; adjusting the total reactive power to be Qs plus or minus 2 random floating; the three-phase power factor is obtained by calculating P/S, and Qs is a reactive power regulation instruction value.
8. The energy storage station PCS simulation operating method of claim 5 wherein the simulation instructions further include fault state simulation, the set of fault state simulation parameters and cross section trigger times being received when the simulation instructions are fault state simulations.
9. The energy storage station PCS simulation operating method of claim 8 in which the virtual device includes a human interface module from which the set of fault state simulation parameters and the cross-section trigger time are received.
10. The energy storage station PCS simulation operating method of claim 1 wherein telemetry, telemetry data upload is blocked when the virtual device is turned off.
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