CN110930807A - Simulation training system of electric power system - Google Patents
Simulation training system of electric power system Download PDFInfo
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- CN110930807A CN110930807A CN201911373880.6A CN201911373880A CN110930807A CN 110930807 A CN110930807 A CN 110930807A CN 201911373880 A CN201911373880 A CN 201911373880A CN 110930807 A CN110930807 A CN 110930807A
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Abstract
The invention provides a simulation training system of a power system, which comprises: the data processing layer acquires target data sent by target equipment and determines real-time section data and fault data of the power system in the target data; the real-time load flow calculation layer carries out first real-time load flow calculation on the real-time section data and the fault data of the power system to obtain a first calculation result; the scheduling simulation training layer formulates a training case according to the first calculation result, sends the training case to the client and obtains an operation instruction sent by the client; the real-time load flow calculation layer updates parameters of electrical equipment in the power system based on the operation instruction, performs second real-time load flow calculation on the updated parameters of the electrical equipment to obtain a second calculation result, and sends the second calculation result to the scheduling simulation training layer; the scheduling simulation training layer generates training evaluation based on the second calculation result, the operation record and the preset evaluation rule, and the technical problem that students cannot be comprehensively trained in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a simulation training system of an electric power system.
Background
The existing dispatching-transformer substation simulation training system takes an interval as a basic operation unit, and information such as equipment data and identification operation rules is solidified in the interval data. Because the templates of the interval units are closely related to various factors, the templates of different intervals cannot be used universally, so that a large number of interval templates need to be established in the system, the data volume is large, the template maintenance is complex, and the universality is poor.
In addition, in the development process of the conventional power system simulation training system, based on the functional requirements of different modules, the data processing mode, the equipment structure, the function framework and the like of each module are greatly different, and if the modules are forcibly integrated, the training experience of students can be seriously influenced.
No effective solution has been proposed to the above problems.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a simulation training system for an electric power system, so as to alleviate the technical problem in the prior art that a trainee cannot be comprehensively trained due to data isolation between target devices.
In a first aspect, an embodiment of the present invention provides a simulation training system for an electric power system, including: the system comprises a data processing layer, a real-time load flow calculation layer and a scheduling simulation training layer, wherein the data processing layer is used for acquiring target data sent by target equipment and determining real-time section data of a power system and fault data in the target data, and the target data comprises: real-time parameters of the electrical device and historical parameters of the electrical device, the target device including at least one of: the system comprises a power protection control device, an SCADA monitoring system and an EMS real-time section flow database of a dispatching control center; the real-time load flow calculation layer is used for carrying out first real-time load flow calculation on the real-time section data and the fault data of the power system to obtain a first calculation result; the dispatching simulation training layer is used for formulating a training case according to the first calculation result, sending the training case to a client side and acquiring an operation instruction sent by the client side, wherein the operation instruction is a remote control instruction and/or a remote dispatching instruction which is input by a student and used for solving the fault of the power system corresponding to the training case; the real-time power flow calculation layer is further used for updating parameters of the electrical equipment in the power system based on the operation instruction, performing second real-time power flow calculation on the updated parameters of the electrical equipment to obtain a second calculation result, and sending the second calculation result to the scheduling simulation training layer; the scheduling simulation training layer is further used for generating training evaluation based on the second calculation result, operation records and preset evaluation rules, wherein the training evaluation is used for representing the training effect of trainees, and the operation records are used for recording the operation instructions and historical operation instructions.
Further, the dispatch simulation training layer comprises: the system comprises a strategy customizing module, an interactive deduction executing module and an evaluation module, wherein the strategy customizing module is used for constructing a trend initial state based on the first calculation result and formulating a deduction scheme based on the trend initial state; the interactive deduction execution module is used for determining a deduction scheme of the power system fault according to the first calculation result, sending the training case to a client side and acquiring an operation instruction sent by the client side; the evaluation module generates the training evaluation based on the second calculation result, the operation record and the preset evaluation rule.
Further, the real-time power flow calculation layer further includes: the simulation module is used for simulating historical real-time section data of the power system to obtain an initial simulation result, wherein the initial simulation result comprises at least one of the following: static simulation results, transient simulation results, and dynamic simulation results.
Further, the scheduling simulation training layer further comprises: the operation evaluation analysis module is used for sending a control instruction to the simulation module so as to enable the simulation module to be connected with target equipment, wherein the target equipment comprises at least one of the following: AC large power grid equipment, DC large power grid equipment and large-capacity power electronic equipment.
Further, the simulation module is further configured to, after being connected to the target device, acquire device parameters sent by the target device, and perform second transient simulation and/or characteristic simulation on the device parameters of the target device, the real-time section data of the power system, and the fault data to obtain a target simulation result.
Further, the operation evaluation analysis module is further configured to obtain the target simulation result, perform device evaluation on the target device based on the target simulation result, and perform system operation condition evaluation on the power system.
Further, the device evaluation includes at least one of: the method comprises the following steps of power angle stability evaluation, voltage stability evaluation, frequency stability evaluation, dynamic stability evaluation, mutual influence evaluation of an alternating current system and a direct current system, multi-loop direct current concentrated drop point behavior characteristic evaluation and control strategy evaluation.
Further, the scheduling simulation training layer further comprises: and the three-dimensional sand table display module is used for acquiring the target data, the first calculation result, the second calculation result and the operation instruction, and performing three-dimensional sand table deduction based on the target data, the first calculation result, the second calculation result and the operation instruction, wherein the three-dimensional sand table is a sand table constructed based on the power system.
Further, the simulation module includes: the system comprises a first simulation module and a second simulation module, wherein the first simulation module is used for performing electromagnetic transient simulation on a power system on a direct current side; the second simulation module is used for performing electromechanical transient simulation on the power system on the alternating current side.
Further, the real-time power flow calculation layer is further configured to send the second calculation result to the target device.
In the embodiment of the present invention, the data processing layer is configured to acquire target data sent by a target device, and determine real-time section data of an electric power system and the fault data in the target data, where the target data includes: real-time parameters of the electrical device and historical parameters of the electrical device, the target device including at least one of: the system comprises a power protection control device, an SCADA monitoring system and an EMS real-time section flow database of a dispatching control center; the real-time load flow calculation layer is used for carrying out first real-time load flow calculation on the real-time section data and the fault data of the power system to obtain a first calculation result; the scheduling simulation training layer is used for making a training case according to the first calculation result, sending the training case to the client and acquiring an operation instruction sent by the client, wherein the operation instruction is a remote control instruction and/or a remote regulation instruction which is input by a student and used for solving the power system fault corresponding to the training case; the real-time load flow calculation layer is also used for obtaining the electrical equipment parameters after the electrical equipment executes the operation instruction, performing second real-time load flow calculation on the electrical equipment parameters to obtain a second calculation result, and sending the second calculation result to the scheduling simulation training layer; and the scheduling simulation training layer is further used for generating a training evaluation based on the second calculation result, wherein the training evaluation is used for representing the training effect of the trainee.
In the embodiment of the application, the target equipment and the real-time load flow calculation layer are connected through the unified interface through the data management layer, so that data between the target equipment can be shared and exchanged, a student can acquire target data in each target equipment to train and learn, the aim of training a power system for the student is achieved, the technical problem that the student cannot be comprehensively trained due to data isolation between the target equipment in the prior art is solved, and the technical effect of comprehensively training the student is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a simulation training system for an electric power system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another simulation training system for an electrical power system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another simulation training system for an electrical power system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another simulation training system for an electric power system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The current simulation training system of the power system is restricted by early theory, application mode, software architecture and other aspects, and can not meet the requirements of the development of the modern power grid on training products in some aspects, specifically expressed in the following aspects:
1. the support for the joint training simulation and the anti-accident maneuver of the dispatcher is insufficient, and the application of the prior product in the aspect is not considered;
2. resources cannot be shared or fully utilized: the method comprises the following steps that firstly, different functional departments in the dispatching center cannot be shared, and secondly, the dispatching center cannot be shared with other dispatching control centers;
3. direct information exchange cannot be realized among the participating subsystems: the existing training system does not consider the interface problem among a plurality of training subsystems, and a teacher generally simulates an operator on duty or a lower-level scheduling operator to operate during training, so that the real sense of the scene during training is poor, and the combined training and anti-accident exercise effects are greatly reduced;
4. for the next-level local dispatching personnel, the system model is simple in equivalence and difficult to obtain boundary parameters, so that the change of the operation mode of the external network and the generated faults cannot be correctly simulated when the dispatching personnel train, the change of the external network cannot be correctly simulated, the simulated power grid environment is greatly distorted, and the training effect of the dispatching personnel is influenced;
5. for higher provincial dispatching personnel, the power grid governed by a lower dispatching department is simulated as a load, only the change of frequency can be reflected, and the related operation of the ground dispatching department on the power grid in the exercise process cannot be reflected, so that the simulation distortion of the lower power grid in the whole training process can mislead dispatching operation personnel.
In view of the above-mentioned needs, the present application proposes the following embodiments:
the first embodiment is as follows:
according to an embodiment of the present invention, there is provided an embodiment of a simulation training system for an electric power system, and fig. 1 is a schematic diagram of a simulation training system for an electric power system according to an embodiment of the present invention, as shown in fig. 1, the system includes: the system comprises a data processing layer 10, a real-time power flow calculation layer 20 and a scheduling simulation training layer 30.
The data processing layer 10 is configured to acquire target data sent by a target device, and determine real-time section data of an electric power system and the fault data in the target data, where the target data includes: real-time parameters of the electrical device and historical parameters of the electrical device, the target device including at least one of: the system comprises a power protection control device, an SCADA monitoring system and an EMS real-time section flow database of a dispatching control center;
specifically, the data management layer connects the target devices with the real-time load flow calculation layer through a unified interface, so that data between the target devices can be resource shared and data exchanged.
In addition, the data management layer compares, analyzes and calculates the target data with the historical real-time section data of the power system and the fault data to determine the real-time section data of the power system and the fault data in the target data.
The real-time power flow calculation layer 20 is configured to perform a first real-time power flow calculation on the real-time section data and the fault data of the power system to obtain a first calculation result;
the scheduling simulation training layer 30 is configured to formulate a training case according to the first calculation result, send the training case to a client, and obtain an operation instruction sent by the client, where the operation instruction is a remote control instruction and/or a remote scheduling instruction input by a trainee and used for solving a fault of an electric power system corresponding to the training case;
the real-time power flow calculation layer 20 is further configured to update parameters of the electrical equipment in the power system based on the operation instruction, perform second real-time power flow calculation on the updated parameters of the electrical equipment to obtain a second calculation result, and send the second calculation result to the scheduling simulation training layer;
the scheduling simulation training layer 30 is further configured to generate a training evaluation based on the second calculation result, an operation record and a preset evaluation rule, where the training evaluation is used to characterize the training effect of the trainee, and the operation record is used to record the operation instruction and the historical operation instruction.
In the embodiment of the application, the target equipment and the real-time load flow calculation layer are connected through the unified interface through the data management layer, so that data between the target equipment can be shared and exchanged, a student can acquire target data in each target equipment to train and learn, the aim of training a power system for the student is achieved, the technical problem that the student cannot be comprehensively trained due to data isolation between the target equipment in the prior art is solved, and the technical effect of comprehensively training the student is achieved.
In the embodiment of the present invention, as shown in fig. 2, the scheduling simulation training layer 30 includes: a strategy customizing module 31, an interactive deduction executing module 32 and an evaluating module 33.
The strategy customizing module 31 is configured to construct a power flow initial state based on the first calculation result, and formulate a deduction scheme based on the power flow initial state;
the interactive deduction execution module 32 is configured to determine a deduction scheme of the power system fault according to the first calculation result, send the training case to a client, and obtain an operation instruction sent by the client;
the evaluation module 33 is configured to generate the training evaluation based on the second calculation result, the operation record, and the preset evaluation rule.
In the embodiment of the invention, the strategy customization module rapidly establishes the initial state of the power flow by the second calculation result sent by the real-time power flow calculation layer and combining the system mode tide before the power system fault occurs and the historical section data of the comprehensive defense system, so as to reappear the accident in the accident occurrence reason and the accident development process, more vividly simulate the response characteristics of a large power grid under a specific case, automatically customize a deduction scheme in batches and realize batch deduction and analysis.
The interactive deduction execution module customizes a corresponding training case according to a deduction scheme customized by the strategy customization module, and sends the training case to the client so that a scheduling student who participates in training trains through interactive demonstration and operates a training client UI system to train.
And the evaluation module generates a training evaluation for representing the training effect of the trainees according to the second calculation result sent by the real-time power flow calculation layer and by combining the operation record and a preset evaluation rule.
In this embodiment of the present invention, the real-time power flow calculation layer 20 further includes: the simulation method is used for simulating historical real-time section data of the power system to obtain an initial simulation result, wherein the initial simulation result comprises at least one of the following: static simulation results, transient simulation results, and dynamic simulation results.
It should be noted that the simulation module includes a first simulation module and a second simulation module.
The simulation module selects the position of an AC-DC network interface at a converter bus of a DC system in an AC-DC parallel power grid through natural decoupling, and adopts an AC-DC network splitting mode.
The first simulation module is used for performing electromagnetic transient simulation on a power system on a direct current side, and the electromagnetic transient characteristics of the direct current system and the accessibility of the control protection device are reserved to the maximum extent. When the electromagnetic side contains FACTS (Flexible alternating current transmission) elements, the electromagnetic side adopts the forms of power load, impedance or injection current source; when the electromagnetic side is an HVDC (Light direct current transmission, HVDC Light) system, a power load, admittance or injection current source form is adopted; when the electromagnetic side is a conventional alternating current network, a Thevenin equivalent model is adopted.
The second simulation module is used for performing electromechanical transient simulation on the power system on the alternating current side, and a Thevenin equivalent model is adopted.
The first simulation module and the second simulation module are interacted through a parallel interface, and circuit parameters calculated by electromagnetic and electromechanical simulation are updated in real time when each electromechanical transient simulation time step is finished.
The simulation program in the simulation module carries out various symmetric and asymmetric fault calculations on the AC and DC measurement, and when the network topology structure changes under different faults, the circuit parameters are interactively updated in real time each time, so that the AC-DC hybrid real-time simulation calculation and the closed-loop test are completed.
In the embodiment of the present invention, as shown in fig. 3, the scheduling simulation training layer 30 further includes:
the operation evaluation analysis module 34 is configured to send a control instruction to the simulation module to connect the simulation module with a target device, where the target device includes at least one of: AC large power grid equipment, DC large power grid equipment and large-capacity power electronic equipment.
In the embodiment of the invention, an electromechanical transient behavior and characteristic simulation experiment for accessing an alternating current large power grid and large-capacity power electronic equipment (equivalent to target equipment) into the alternating current power grid and an electromagnetic transient behavior and characteristic simulation experiment for accessing a direct current system and the large-capacity power electronic equipment (equivalent to the target equipment) are performed by an operation evaluation analysis module, so that the simulation module performs transient simulation or characteristic simulation on equipment parameters and target data of the target equipment to obtain a target simulation result.
After the operation evaluation analysis module obtains a target simulation result, evaluation such as power angle stability evaluation, voltage stability evaluation, frequency stability evaluation, dynamic stability evaluation, mutual influence evaluation of an alternating current system and a direct current system, multi-loop direct current concentrated drop point behavior characteristic evaluation, control strategy evaluation and the like is carried out on target equipment through the simulation result, and batch test and analysis are carried out on large-batch operation control devices in the power system.
In an embodiment of the present invention, as shown in fig. 4, the scheduling simulation training layer further includes:
the three-dimensional sand table display module 35 is configured to obtain the target data, the first calculation result, the second calculation result, and the operation instruction, and perform three-dimensional sand table deduction based on the target data, the first calculation result, the second calculation result, and the operation instruction, where the three-dimensional sand table is a sand table constructed based on the power system.
In the embodiment of the invention, the three-dimensional sand table display module provides a three-dimensional electronic real-scene sand table simulation deduction system through the acquisition and access of real-time data, and the simulation deduction system updates the states and parameters of equipment in the system in real time through receiving the real-time data sent by the data management module in real time and keeps synchronous with the states and parameters of the client system UI and the real electrical equipment accessed to the simulation training system.
The power system is displayed through the three-dimensional sand table type display module, and the problem that in the prior art, the tour module of the power system needs to link almost all primary equipment such as a main transformer, a bus and a circuit breaker which are actual on site to an equipment tour guide diagram in a two-dimensional picture mode is solved. When patrolling an indoor protection room and the like, only a selected screen cabinet can be operated, and the screen cabinet can not be moved left and right and back and forth to other screen cabinets for patrolling operation, so that the difference between a simulated scene and the actual scene is large.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A simulation training system for an electric power system, comprising: a data processing layer, a real-time power flow calculation layer and a scheduling simulation training layer, wherein,
the data processing layer is used for acquiring target data sent by target equipment and determining real-time section data and fault data of the power system in the target data, wherein the target data comprises: real-time parameters of the electrical device and historical parameters of the electrical device, the target device including at least one of: the system comprises a power protection control device, an SCADA monitoring system and an EMS real-time section flow database of a dispatching control center;
the real-time load flow calculation layer is used for carrying out first real-time load flow calculation on the real-time section data and the fault data of the power system to obtain a first calculation result;
the dispatching simulation training layer is used for formulating a training case according to the first calculation result, sending the training case to a client side and acquiring an operation instruction sent by the client side, wherein the operation instruction is a remote control instruction and/or a remote dispatching instruction which is input by a student and used for solving the fault of the power system corresponding to the training case;
the real-time power flow calculation layer is further used for updating parameters of the electrical equipment in the power system based on the operation instruction, performing second real-time power flow calculation on the updated parameters of the electrical equipment to obtain a second calculation result, and sending the second calculation result to the scheduling simulation training layer;
the scheduling simulation training layer is further used for generating training evaluation based on the second calculation result, operation records and preset evaluation rules, wherein the training evaluation is used for representing the training effect of trainees, and the operation records are used for recording the operation instructions and historical operation instructions.
2. The system of claim 1, wherein the dispatch simulation training layer comprises: a strategy customizing module, an interactive deduction executing module and an evaluating module, wherein,
the strategy customizing module is used for constructing a power flow initial state based on the first calculation result and formulating a deduction scheme based on the power flow initial state;
the interactive deduction execution module is used for determining a deduction scheme of the power system fault according to the first calculation result, sending the training case to a client side and acquiring an operation instruction sent by the client side;
the evaluation module is used for generating the training evaluation based on the second calculation result, the operation record and the preset evaluation rule.
3. The system of claim 1, wherein the real-time power flow calculation layer further comprises:
the simulation module is used for simulating historical real-time section data of the power system to obtain an initial simulation result, wherein the initial simulation result comprises at least one of the following: static simulation results, transient simulation results, and dynamic simulation results.
4. The system of claim 3, wherein the dispatch simulation training layer further comprises:
the operation evaluation analysis module is used for sending a control instruction to the simulation module so as to enable the simulation module to be connected with target equipment, wherein the target equipment comprises at least one of the following: AC large power grid equipment, DC large power grid equipment and large-capacity power electronic equipment.
5. The system of claim 4,
the simulation module is further configured to, after being connected with the target device, acquire device parameters sent by the target device, and perform transient simulation and/or characteristic simulation on the device parameters of the target device, the real-time section data of the power system, and the fault data to obtain a target simulation result.
6. The system of claim 5,
the operation evaluation analysis module is further configured to obtain the target simulation result, perform equipment evaluation on the target equipment based on the target simulation result, and perform system operation condition evaluation on the power system.
7. The system of claim 6, wherein the device assessment comprises at least one of: the method comprises the following steps of power angle stability evaluation, voltage stability evaluation, frequency stability evaluation, dynamic stability evaluation, mutual influence evaluation of an alternating current system and a direct current system, multi-loop direct current concentrated drop point behavior characteristic evaluation and control strategy evaluation.
8. The system of claim 1, wherein the dispatch simulation training layer further comprises:
and the three-dimensional sand table display module is used for acquiring the target data, the first calculation result, the second calculation result and the operation instruction, and performing three-dimensional sand table deduction based on the target data, the first calculation result, the second calculation result and the operation instruction, wherein the three-dimensional sand table is a sand table constructed based on the power system.
9. The system of claim 3, wherein the simulation module comprises: a first simulation module and a second simulation module, wherein,
the first simulation module is used for performing electromagnetic transient simulation on a direct current side power system;
the second simulation module is used for performing electromechanical transient simulation on the power system on the alternating current side.
10. The system of claim 1,
and the real-time power flow calculation layer is further configured to send the second calculation result to the target device.
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| CN112216154A (en) * | 2020-09-03 | 2021-01-12 | 国网山东省电力公司建设公司 | Training teaching system and method based on intelligent glasses |
| CN113035001A (en) * | 2021-03-11 | 2021-06-25 | 国网河北省电力有限公司培训中心 | Multifunctional complementary communication power supply simulation training system and implementation method thereof |
| CN113705138A (en) * | 2021-08-30 | 2021-11-26 | 国网上海市电力公司 | Online safety assessment method for large-scale alternating current and direct current power grid |
| CN114596752A (en) * | 2022-03-07 | 2022-06-07 | 中国电力科学研究院有限公司 | Multi-stage power grid regulation and control integrated training simulation method, device, system and equipment |
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