CN115241876A - Method, device, equipment and medium for generating safety control measures of power system - Google Patents
Method, device, equipment and medium for generating safety control measures of power system Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a medium for generating security control measures of a power system. The method for generating the safety control measures of the power system acquires the basic information of the current fault of the power system; inputting basic information of the current fault of the power system into a preset safety control strategy model; the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model; searching a security control strategy which simultaneously meets fault constraint, monitoring constraint and topological constraint in a strategy constraint model; and acquiring action constraints in the action constraint model corresponding to the searched safety control strategy as safety control measures. A unified, standard and fine safety control strategy model is established, and the system model is abstracted into five basic elements of topology constraint, monitoring constraint, fault constraint, strategy constraint and action constraint, so that the logical relationship of each part of the safety control system is clearer, and the generated safety control measures are more accurate.
Description
Technical Field
The invention belongs to the field of power system automation, and particularly relates to a method, a device, equipment and a medium for generating a safety control measure of a power system.
Background
The power grid safety control system is a second defense line for guaranteeing the safety of a power grid, and a large number of power grid safety control systems are constructed in a matched manner for guaranteeing the safe operation of an extra-high voltage alternating current and direct current large power grid in China. Generally, the existing safety control system is generally divided into three layers, including a master station layer, a substation layer and an execution station layer, wherein each substation is connected with a plurality of execution stations. In the safety control system, the model, the measurement data and the fault information come from each execution station and each substation, the core strategy processing is completed in the main station host, and the strategy is finally issued to the execution stations through the substations for implementation. The safety and stability control system of each region consists of safety automatic devices of a main station, a sub-station and an execution station under the jurisdiction, and after the operation failure of the power grid occurs, safety control actions such as cutting machines, cutting lines and the like are carried out according to an operation mode and a control strategy to ensure the stable operation of the power grid.
In recent years, an extra-high voltage alternating current and direct current technology and a new energy scale are rapidly developed, a new energy high-occupancy-ratio and high-proportion outgoing type sending-end power grid and a multi-direct-current feed-in and high-proportion distributed new energy access receiving-end power grid are formed, the operation characteristics of the power grid are deeply changed, and therefore a more complex extra-high voltage trans-regional direct current safety control system is gradually formed. Due to the difference of the protection functions of the direct current transmission and receiving end power grid systems, the direct current safety control strategies are different. The current commonly adopted safety control strategy modeling method is to analyze the fault form, the operation mode, the action fixed value, the action form and the like of the safety control strategy table aiming at the protection of related safety control system strategies of different cross-regional direct currents and regional systems respectively to form an independent safety control strategy model, and a uniform safety control strategy model is not formed yet. In the application function of online security analysis of the large power grid, the service calling method based on the security control strategy model is not widely applied.
Disclosure of Invention
The invention aims to provide a method, a device, equipment and a medium for generating a safety control measure of an electric power system, which are suitable for an alternating current-direct current hybrid large power grid and solve the problem that an accurate safety control strategy cannot be obtained due to the fact that no unified, standard and fine model exists in the safety control strategy of the electric power system at present.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for generating safety control measures of a power system comprises the following steps:
acquiring basic information of a current fault of the power system;
inputting basic information of the current fault of the power system into a preset safety control strategy model; the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model;
searching a security control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topology constraint in the fault constraint model, the monitoring constraint model and the topology constraint model in the strategy constraint model;
and acquiring the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure.
As an optional scheme of the present invention, in the step of inputting the basic information of the current fault of the power system into a preset safety control policy model, an obtaining manner of the safety control policy model is as follows:
acquiring basic information of a security control system, and generating a security control system model;
acquiring a power grid operation mode specified in a safety control system and a fault type specified in the safety control system from the safety control system model;
classifying the specified power grid operation modes in the safety control system, acquiring equipment members, equipment types, equipment states and power flow target values aiming at each type of power grid operation mode, and inputting a topological constraint model;
classifying fault types specified in a safety control system, and inputting the fault types, fault names and fault on-off states into a fault constraint model aiming at each type of faults;
for the triggering condition of each type of fault, recording a fault member, a member equipment type, a monitoring variable, a monitoring condition and a monitoring value into a monitoring constraint model;
forming a strategy constraint model by combining the topology constraint model, the fault constraint model and the monitoring constraint model in a logic expression mode, and inputting a threshold value, a control quantity, a reserved quantity and an action principle of a strategy into the strategy constraint model;
and for each type of strategy constraint condition, inputting the corresponding safety control action measures including action measure types, equipment names, equipment types, adjustment target values and action time delays into a measure constraint model.
As an optional scheme of the present invention, the topological constraint in the topological constraint model is divided into: the state of the pressing plate is manually set in advance; automatically identifying the switching-on and switching-off states of the unit, the line and the transformer through the electric quantities and the switching quantities of the unit, the line and the transformer; control information transmitted from a remote control system.
As an optional scheme of the present invention, the fault constraint in the fault constraint model is divided into: n-1 faults and N-m faults; single-phase ground short-circuit faults, two-phase short-circuit faults, three-phase short-circuit faults, same-name-phase permanent faults and different-name-phase permanent faults; the method comprises the following steps that (1) direct current commutation failure, direct current blocking failure and direct current pole blocking are restarted; overload, low frequency, low voltage, high frequency and high voltage faults.
As an optional solution of the present invention, the monitoring constraint in the monitoring constraint model is divided into: active, reactive, voltage, current, phase angle, frequency, electrical quantity and rotational speed; the tripping signal, the reclosing signal and the fault are different; equipment commissioning status and equipment operational status.
As an optional scheme of the present invention, the policy constraint in the policy constraint model includes: triggering a measure threshold value, a control quantity and a reserve quantity; maximum machine cutting amount/number of machine cutting stations, maximum load cutting amount/number of load cutting and maximum direct current modulation amount/number of modulation direct current strips; the system comprises a generator tripping priority model, a load shedding priority model, an overload control model, a reserved station appointed number generator model and a cutting appointed equipment model.
As an optional solution of the present invention, the motion constraint in the motion constraint model is divided into: cutting machine, cutting load, cutting capacitive reactance device, cutting power grid connection line and cutting terminal load feeder line; direct current lifting, direct current back-falling, unit power adjustment and load power adjustment; starting up, switching on and off the circuit breaker and switching on and off the disconnecting link.
Based on the same inventive concept, a second aspect of the present invention provides an apparatus for generating safety control measures for an electrical power system, comprising:
the acquisition module is used for acquiring basic information of the current fault of the power system;
the input module is used for inputting the basic information of the current fault of the power system into a preset safety control strategy model;
the searching module is used for searching the safety control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topological constraint in the fault constraint model, the monitoring constraint model and the topological constraint model in the strategy constraint model;
and the safety control measure generation module is used for acquiring the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure.
Based on the same inventive concept, a third aspect of the present invention provides an electronic device, which includes a processor and a memory, wherein the processor is configured to execute a computer program stored in the memory to implement the above-mentioned power system safety control measure generation method.
Based on the same inventive concept, a fourth aspect of the present invention provides a computer-readable storage medium storing at least one instruction, which when executed by a processor implements the above-mentioned power system safety control measure generating method.
The invention has the following beneficial effects:
the invention provides a method for generating safety control measures of an electric power system, which comprises the steps of acquiring basic information of current faults of the electric power system; inputting basic information of the current fault of the power system into a preset safety control strategy model; the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model; searching a safety control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topological constraint in the fault constraint model, the monitoring constraint model and the topological constraint model in the strategy constraint model; and acquiring action constraints in the action constraint model corresponding to the searched safety control strategy as safety control measures. Through the steps, the method establishes a unified, standard and fine security control strategy model, and abstracts the system model into five basic elements of topology constraint, monitoring constraint, fault constraint, strategy constraint and action constraint, so that the logical relationship of each part of the security control system is clearer, and the generated security control measures are more accurate.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a basic structure diagram of a typical security control system in an embodiment of the present invention.
Fig. 2 is a diagram of a security policy model structure in the embodiment of the present invention.
Fig. 3 is a schematic diagram of a security control policy modeling entity class based on an object-oriented technology in the embodiment of the present invention.
Fig. 4 is a flow chart of load flow calculation based on a security control policy model service in the embodiment of the present invention.
Fig. 5 is a block diagram of a device for generating security control measures of an electrical power system according to an embodiment of the present invention.
Fig. 6 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Interpretation of terms
A security control system: namely a safety and stability control system, is an important defense line for ensuring the safe and stable operation of the power grid. The control system is used for restoring the system to a normal operation state by executing various emergency control measures after the system is in an emergency state. According to the type of a power grid, a safety control system can be divided into an alternating current safety control system and a direct current safety control system, the alternating current safety control system comprises various safety automatic devices, and the direct current safety control system can be divided into a transmitting end direct current safety control system and a receiving end direct current safety control system according to a direct current transmitting end and a receiving end.
Example 1
The embodiment 1 of the invention provides a method for generating a safety control measure of a power system, which comprises the following steps:
s100, monitoring the power grid, judging whether a fault occurs, and acquiring basic information of the current fault of the power system when the fault occurs. For example, the grid operation mode based on the ground state power flow is used for monitoring whether the grid has faults or equipment actions. When a fault occurs or equipment acts, basic information of the current fault is acquired.
S200, inputting basic information of the current fault of the power system into a preset safety control strategy model; the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model.
It should be noted that the present invention mainly aims at modeling a safety and stability control strategy (security control strategy for short). The safety control strategy is jointly completed by all levels of control devices in the safety and stability control system.
It should be noted that, the safety and stability control system is generally divided into a control layer and an execution layer according to a design principle of hierarchical partitioning, and both the control layer and the execution layer can be designed into a multilayer structure according to the requirements of a control strategy. For example, the basic structure of a typical safety and stability control system can be divided into three layers, namely a primary control layer, a secondary control layer and a tertiary execution layer, wherein the primary control layer is composed of one or more master station systems, the secondary control layer is composed of a plurality of substation systems, and the tertiary execution layer is composed of a plurality of execution station systems. The basic structure of a typical safety control system is shown in fig. 1. According to the system structure shown in fig. 1, the safety control system structure is further merged and integrated into a two-layer model structure, the upper layer is a control unit model responsible for managing the whole system, and the lower layer is an execution unit model with an actual execution function, so that the logic relation of each part of the safety control system is clearer, and further the safety control strategy modeling is relatively easy to realize.
The scheme is based on a two-layer structure security control system model, a security control strategy model is designed, the basic structure and the main characteristics of the security control strategy are summarized and classified, the security control strategy is abstracted into five basic elements of topology constraint, monitoring constraint, fault constraint, strategy constraint and action constraint, a reasonable data structure is further designed, and universal description of the security control strategy is finally achieved. The structure of the security control strategy model is shown in figure 2.
In the safety control strategy model structure: the topological constraint is described by a mode member determining the operation mode of the power grid; the fault constraints are described by a fault set of various fault types; the monitoring constraint is described by various monitoring variables or fault members with monitoring functions, and the fault members form a fault set at the same time; combining multiple fault sets and operation modes to form different strategy models for describing main operation control parameters such as trigger thresholds, action fixed values and the like of corresponding strategies, namely strategy constraints; the action constraint is formed by a series of safety control action measures determined by a strategy constraint set, and the quantity of the measure set is consistent with the quantity of the models in the strategy constraint set.
The analysis of the above five elements is as follows:
1. topological constraints
The topology constraint mainly aims to distinguish the operation mode of the current power grid, the security control device can only give out the security control strategy corresponding to the fault by identifying the topology structure of the power grid, and the topology constraint can be mainly divided into the following three types:
1) The state of the pressing plate is manually set in advance.
2) And automatically identifying the switching-on and switching-off states of the unit, the line and the transformer through the equivalent measured values of the electrical quantities and the switching quantities of the unit, the line and the transformer.
3) Control information transmitted from a remote control system.
2. Fault restraint
Faults specified in the safety and stability control system trigger corresponding safety control devices to act, and can be divided into section faults and single equipment faults according to fault types, wherein the single equipment faults comprise line faults, transformer faults, bus faults and the like. The method can be divided into the following steps according to the specific content of the fault:
1) N-1 faults, N-m faults.
2) Single-phase ground short-circuit faults, two-phase short-circuit faults, three-phase short-circuit faults, permanent faults of the same-name phase and permanent faults of different-name phases.
3) Failure of direct current commutation, direct current lockout failure, and restart of direct current pole lockout.
4) Overload, low frequency, low voltage, high frequency, high voltage failures.
3. Monitoring constraints
The monitoring constraint is the range of the operation parameter of the main electric element concerned by the safety control device, and is used for describing the action starting condition and the threshold value of the relevant strategy, and the monitoring constraint types can be divided into:
1) Active, reactive, voltage, current, phase angle, frequency, electric quantity, rotation speed.
2) And the tripping signal, the reclosing signal and the fault are different.
3) Equipment commissioning state and equipment running state.
4. Policy constraints
The strategy constraints are a series of constraint conditions for controlling safety control action measures, one safety control strategy is jointly determined by topological constraints, fault constraints and monitoring constraints, and the types of the strategy constraints are different according to different combination modes of the topological constraints, the fault constraints and the monitoring constraints and can be divided into the following three types:
1) Triggering measure threshold value, control quantity and reserve quantity.
2) Maximum cutting amount/cutting machine number, maximum cutting load amount/cutting load number, maximum direct current modulation amount/modulation direct current number.
3) The system comprises a generator tripping priority model, a load shedding priority model, an overload control model, a reserved station appointed number generator model, a cutting appointed equipment model and the like.
5. Motion constraint
The safety control system needs to deal with various critical instability conditions in the power system and also needs to effectively control the spread of system faults, which determines the complexity and the diversity of forms of control measures. The action constraint needs to be as clear and direct as possible, and the action constraint can be divided into the following classes according to the action measures of different safety and stability control systems:
1) Cutting machine, cutting load, cutting capacitive reactance device, cutting power grid connection line and cutting terminal load feeder line.
2) Direct current lifting, direct current back-off, unit power adjustment and load power adjustment.
3) Starting, opening and closing a circuit breaker and opening and closing a disconnecting link.
By combining the analysis results, it needs to be explained that, in order to facilitate modeling, a complete safety control strategy is regarded as a multi-input and multi-output control link, wherein topological constraint, fault constraint and monitoring constraint are different types of inputs of the control link, and each type of input can be composed of a plurality of input conditions; the action constraint is defined as the output of the control link, and the number of the same output can be also a plurality. To simplify the logic operation, different types of "inputs" must be operated with and logic, while the same type of "inputs" can be and or logic.
In combination with the above analysis on the 5 types of elements, the obtaining manner of the security control policy model in step S200 is as follows:
step 1: acquiring basic information of a security control system, and generating a security control system model; specifically, the basic information of the security control system includes: the system ID, chinese name, system on-off state, etc. of the safety and stability control system. And acquiring the power grid operation mode specified in the safety control system and the fault type specified in the safety control system from the safety control system model.
And 2, step: and classifying the specified power grid operation modes in the safety control system, acquiring variables such as equipment members, equipment types, equipment states, tidal current target values and the like aiming at each type of power grid operation mode, and inputting a topological constraint model.
And step 3: and classifying the specified fault types in the safety control system, and inputting parameters such as the fault types, the fault names, the fault on-off states and the like into a fault constraint model aiming at each type of fault.
And 4, step 4: and for the triggering condition of each type of fault, recording parameters such as a fault member, a member equipment type, a monitoring variable, a monitoring condition, a monitoring value and the like into a monitoring constraint model.
And 5: and (4) forming a strategy constraint model in a logic expression combination mode according to the topology constraint model, the fault constraint model and the monitoring constraint model generated in the step (2-4), and inputting the threshold value, the control quantity, the reserved quantity and the action principle of the strategy into the strategy constraint model.
Step 6: and for each type of strategy constraint conditions, inputting the corresponding safety control action measures, including parameters such as action measure types, equipment names, equipment types, adjustment target values, action time delays and the like, into the action constraint model.
S300, searching for a safety control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topological constraint in the fault constraint model, the monitoring constraint model and the topological constraint model in the strategy constraint model.
S400, obtaining the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure.
According to the invention, safety control systems such as a safety automatic device, a safety and stability control system, an AC/DC frequency coordination system and the like are combed, merged and integrated, so that all the safety control systems are classified into a two-layer model structure, the upper layer is a control unit model responsible for managing the whole system, and the lower layer is an execution unit model with an actual execution function. Based on a two-layer model structure of the safety control system, a system model is abstracted into five basic elements of topology constraint, monitoring constraint, fault constraint, strategy constraint and action constraint, so that the logical relationship of each part of the safety control system is clearer. The method classifies input information of a security control system into three categories, namely fault constraint, monitoring constraint and topology constraint; the fault constraints are divided more finely, so that not only single power system faults but also fault types such as N-1, N-m and the like are considered, and the operation risk of the power grid is comprehensively and accurately analyzed. According to the method, the key information is extracted, the reasonable data structure is designed, the service process is optimized, the three-layer control system is simplified into a two-layer logic structure on the premise of ensuring the complete information of the safety automatic device of the three-layer control system, and the comprehensiveness and accuracy of strategy modeling are ensured.
According to the steps, the structural modeling of all the safety control strategies in the safety and stability control system is completed, and a safety control strategy modeling entity class diagram based on the object-oriented technology is shown in FIG. 3.
Next, the flow chart of the load flow calculation based on the safety control policy model service is shown in fig. 4, taking dispatcher load flow as an example.
Firstly, a dispatcher load flow starts calculation, and whether a fault or equipment action occurs in a power grid is monitored according to the power grid operation mode of the ground state load flow. If no fault occurs, ending the tide program; if the fault occurs, the safety control strategy service is called, safety control action measures which are met by the topological constraint, the fault constraint and the monitoring constraint together are searched based on a strategy table established by a safety control strategy model, the safety control action measures are returned to the dispatcher load flow application, and the dispatcher load flow application judges whether the safety control action measures are searched. If the safety control measures are searched, corresponding actions are executed according to the safety control measure model, and load flow calculation is carried out; and if the current is not searched, the current is not operated, the current is normally calculated, and the program is ended after the current is calculated.
Example 2
As shown in fig. 5, based on the same inventive concept, embodiment 2 of the present invention further provides a device for generating a safety control measure of an electrical power system, including:
and the acquisition module is used for acquiring basic information of the current fault of the power system.
And the input module is used for inputting the basic information of the current fault of the power system into a preset safety control strategy model.
In the input module, the security control strategy model is obtained in the following mode:
step 1: acquiring basic information of a security control system, and generating a security control system model; specifically, the basic information of the security control system includes: the system ID, chinese name, system on-off state, etc. of the safety and stability control system. And acquiring the power grid operation mode specified in the safety control system and the fault type specified in the safety control system from the safety control system model.
Step 2: and classifying the specified power grid operation modes in the safety control system, acquiring variables such as equipment members, equipment types, equipment states, tidal current target values and the like aiming at each type of power grid operation mode, and inputting a topological constraint model.
And 3, step 3: and classifying the specified fault types in the safety control system, and inputting parameters such as the fault types, the fault names, the fault on-off states and the like into a fault constraint model aiming at each type of fault.
And 4, step 4: and for the triggering condition of each type of fault, recording parameters such as a fault member, a member equipment type, a monitoring variable, a monitoring condition, a monitoring value and the like into a monitoring constraint model.
And 5: and (4) forming a strategy constraint model in a logic expression combination mode according to the topology constraint model, the fault constraint model and the monitoring constraint model generated in the step (2-4), and inputting the threshold value, the control quantity, the reserved quantity and the action principle of the strategy into the strategy constraint model.
Step 6: and for each type of strategy constraint condition, inputting the corresponding safety control action measures, including parameters such as action measure types, equipment names, equipment types, adjustment target values, action time delays and the like, into a measure constraint model.
And the searching module is used for searching the safety control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topological constraint in the fault constraint model, the monitoring constraint model and the topological constraint model in the strategy constraint model.
And the safety control measure generation module is used for acquiring the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure.
Example 3
As shown in fig. 6, according to the same inventive concept, embodiment 3 of the present invention further provides an electronic device 100 for implementing a method for generating a security control measure of an electrical power system; the electronic device 100 comprises a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104. The memory 101 may be used for storing a computer program 103, and the processor 102 implements the steps of the power system safety control measure generation method of embodiment 1 by running or executing the computer program stored in the memory 101 and calling data stored in the memory 101.
The memory 101 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data) created according to the use of the electronic apparatus 100, and the like. In addition, the memory 101 may include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other non-volatile solid state storage device.
The at least one Processor 102 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The processor 102 may be a microprocessor or the processor 102 may be any conventional processor or the like, and the processor 102 is the control center of the electronic device 100 and connects the various parts of the electronic device 100 with various interfaces and lines.
The memory 101 in the electronic device 100 stores a plurality of instructions to implement a method for generating a security measure of a power system, and the processor 102 may execute the plurality of instructions to implement:
acquiring basic information of a current fault of the power system;
inputting basic information of the current fault of the power system into a preset safety control strategy model; the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model;
searching a safety control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topological constraint in the fault constraint model, the monitoring constraint model and the topological constraint model in the strategy constraint model;
and acquiring action constraints in an action constraint model corresponding to the searched safety control strategy as safety control measures.
Example 4
The integrated modules/units of the electronic device 100 may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, all or part of the flow in the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium and used by a processor to implement the steps of the above-described embodiments of the method. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, and Read-Only Memory (ROM).
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A method for generating safety control measures of an electric power system is characterized by comprising the following steps:
acquiring basic information of the current fault of the power system;
inputting basic information of the current fault of the power system into a preset safety control strategy model; the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model;
searching a safety control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topological constraint in the fault constraint model, the monitoring constraint model and the topological constraint model in the strategy constraint model;
and acquiring the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure.
2. The method for generating the safety control measure of the power system according to claim 1, wherein in the step of inputting the basic information of the current fault of the power system into a preset safety control strategy model, the safety control strategy model is obtained in a manner that:
acquiring basic information of a security control system, and generating a security control system model;
acquiring a power grid operation mode and a fault type specified in a security control system from the security control system model;
classifying the specified power grid operation modes in the safety control system, acquiring equipment members, equipment types, equipment states and power flow target values aiming at each type of power grid operation mode, and inputting a topological constraint model;
classifying fault types specified in a safety control system, and inputting the fault types, fault names and fault on-off states into a fault constraint model aiming at each type of faults;
for the triggering condition of each type of fault, recording a fault member, a member equipment type, a monitoring variable, a monitoring condition and a monitoring value into a monitoring constraint model;
forming a strategy constraint model by combining the topology constraint model, the fault constraint model and the monitoring constraint model in a logical expression mode, and inputting a threshold value, a control quantity, a retention quantity and an action principle of a strategy into the strategy constraint model;
and for each type of strategy constraint condition, inputting the corresponding safety control action measures including action measure types, equipment names, equipment types, adjustment target values and action time delays into a measure constraint model.
3. The method for generating the safety control measure of the power system according to claim 1, wherein the topological constraint in the topological constraint model is divided into: the state of the pressing plate is manually set in advance; automatically identifying the switching-on and switching-off states of the set, the line and the transformer through the electrical quantities and switching quantities of the set, the line and the transformer; control information transmitted from a remote control system.
4. The method for generating the safety control measure of the power system according to claim 1, wherein the fault constraint in the fault constraint model is divided into: n-1 faults and N-m faults; single-phase ground short-circuit faults, two-phase short-circuit faults, three-phase short-circuit faults, same-name-phase permanent faults and different-name-phase permanent faults; the direct current commutation failure, the direct current blocking failure and the direct current pole blocking are restarted; overload, low frequency, low voltage, high frequency and high voltage faults.
5. The method for generating the safety control measure of the power system according to claim 1, wherein the monitoring constraints in the monitoring constraint model are as follows: active, reactive, voltage, current, phase angle, frequency, electrical quantity and rotational speed; the tripping signal, the reclosing signal and the fault are different; equipment commissioning status and equipment operational status.
6. The method for generating the safety control measure of the power system according to claim 1, wherein the strategy constraints in the strategy constraint model are: triggering a measure threshold value, a control quantity and a reserved quantity; maximum machine cutting amount/number of machine cutting stations, maximum load cutting amount/number of load cutting and maximum direct current modulation amount/number of modulation direct current strips; the system comprises a generator tripping priority model, a load shedding priority model, an overload control model, a reserved station appointed number generator model and a cutting appointed equipment model.
7. The method for generating the safety control measure of the power system according to claim 1, wherein the action constraint in the action constraint model is divided into: cutting machine, cutting load, cutting capacitive reactance device, cutting power grid connection line and cutting terminal load feeder line; direct current lifting, direct current back-falling, unit power adjustment and load power adjustment; starting up, switching on and off the circuit breaker and switching on and off the disconnecting link.
8. An electric power system safety control measure generation device, characterized by comprising:
the acquisition module is used for acquiring basic information of the current fault of the power system;
the input module is used for inputting the basic information of the current fault of the power system into a preset safety control strategy model;
the searching module is used for searching the security control strategy which simultaneously meets the fault constraint, the monitoring constraint and the topology constraint in the fault constraint model, the monitoring constraint model and the topology constraint model in the strategy constraint model;
and the safety control measure generation module is used for acquiring the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure.
9. An electronic device, comprising a processor and a memory, wherein the processor is configured to execute a computer program stored in the memory to implement the power system security measure generation method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores at least one instruction which, when executed by a processor, implements the power system safety control measure generation method according to any one of claims 1 to 7.
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| CN115914023A (en) * | 2022-11-23 | 2023-04-04 | 国网四川省电力公司电力科学研究院 | Full-period information monitoring method and device for safety control system function test command |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115914023A (en) * | 2022-11-23 | 2023-04-04 | 国网四川省电力公司电力科学研究院 | Full-period information monitoring method and device for safety control system function test command |
| CN115914023B (en) * | 2022-11-23 | 2024-05-07 | 国网四川省电力公司电力科学研究院 | Method and device for monitoring full period information of security control system function test command |
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