CN113937774A - Power supply grid-related protection checking method and system - Google Patents

Power supply grid-related protection checking method and system Download PDF

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Publication number
CN113937774A
CN113937774A CN202111007256.1A CN202111007256A CN113937774A CN 113937774 A CN113937774 A CN 113937774A CN 202111007256 A CN202111007256 A CN 202111007256A CN 113937774 A CN113937774 A CN 113937774A
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China
Prior art keywords
protection
power supply
grid
checking
network
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Inventor
曹楠
柯贤波
施秀萍
魏平
黄远超
李天琦
郭志全
李波
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Northwest Branch Of State Grid Corp Of China
China EPRI Electric Power Engineering Co Ltd
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Northwest Branch Of State Grid Corp Of China
China EPRI Electric Power Engineering Co Ltd
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Priority to CN202111007256.1A priority Critical patent/CN113937774A/en
Publication of CN113937774A publication Critical patent/CN113937774A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/02—Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

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Abstract

The invention provides a checking method and a checking system for power supply grid-related protection, which are used for acquiring real-time data of a smart power grid dispatching technology support system; acquiring a power supply of the grid-related protection action; and acquiring a power-related protection action value of the power supply of the power-related protection action according to the checking type from the real-time data, and checking based on the power-related protection action value. The method and the device can realize the online check of the power supply grid protection, and have wide practicability and real-time performance. The power supply monitoring method and the power supply monitoring system have the advantages that the power supply monitoring method and the power supply monitoring system can check the power supply protection action fixed value, the power supply protection time fixed value and the power supply protection coordination relationship of each power supply, set holes of the coordination relationship can be found in time through checking, accuracy, reliability and timeliness of data can be guaranteed, the power supply protection action fixed value, the power supply protection time fixed value and the power supply protection coordination relationship correctness, reasonableness and adaptability can be checked again in time under the condition that the power grid structure and the operation mode are changed, and the risk resistance of the unit under the extreme condition of the power grid is improved.

Description

Power supply grid-related protection checking method and system
Technical Field
The invention relates to the technical field of power systems, in particular to a power supply grid-related protection checking method and system.
Background
The rapid development of a large-scale alternating current-direct current hybrid power grid and the continuous expansion of the scale of intermittent renewable new energy sources such as photovoltaic energy, wind power and the like have the advantages that various types of power sources are distributed more and more widely, the installation occupation ratio and the power generation ratio of a conventional unit and a new energy source station are changed greatly, and the problem of grid-related safety between source grids is increasingly prominent.
With the deep research on the problem of security and stability of network-related networks between source networks, the important role of network-related protection in network source coordination is continuously recognized and deepened. The grid-related protection refers to a part of protection and control devices of a generator set, wherein action behaviors and parameter settings are related to a power grid operation mode or need to be coordinated with a safety automatic device in a power grid. The major power failure accident that has occurred shows: in the case of grid-related protection of a large generator set, the accident is enlarged due to misoperation or failure in the extreme condition of a power grid, so that the grid-related protection of a power supply needs to be checked.
At present, the power supply is generally checked by using the power supply network-related protection automatic check software, and the power supply network-related protection automatic check software checks the action behavior of the power supply network-related protection by means of a simulation program and related software. The original power supply data required by the automatic checking software for the grid-related protection in the checking process depends on the setting value list or the simulation off-line data reported by each power plant, the accuracy, the reliability and the timeliness of data cannot be guaranteed, and the correctness, the reasonability and the adaptability of the grid-related protection setting value and the matching relation cannot be timely re-checked and calculated under the condition that the structure and the operation mode of a power grid are changed. Meanwhile, the automatic checking software for the power plant generator transformer substation is checked in an off-line mode by means of a set typical protection model, has no wide applicability and real-time performance, and cannot comprehensively cover the power plant generator transformer substation power plant generator substation network-related protection checking requirement.
Disclosure of Invention
In order to overcome the defects that the prior art does not have wide applicability and instantaneity, the invention provides a power supply grid-related protection checking method, which comprises the following steps:
acquiring real-time data of a support system of a smart grid dispatching technology;
scanning the action state of the power supply to obtain a power supply for protecting the action of the power supply;
and acquiring a power-related protection action value of the power supply of the power-related protection action according to the checking type and checking based on the power-related protection action value.
The intelligent power grid dispatching technology support system comprises a WAMS system and an SCADA system;
the real-time data of the intelligent power grid dispatching technology support system comprises real-time data of the WAMS system and real-time data of the SCADA system.
The checking types comprise: at least one of the fixed value checking of the network-related protection action, the fixed value checking of the network-related protection time and the matching relation checking of the network-related protection.
Acquiring a power-grid-related protection action value of a power supply of the power-grid-related protection action from real-time data according to a checking type, and checking based on the power-grid-related protection action value, wherein the checking comprises the following steps:
when the checking type is the network-related protection action fixed value checking:
acquiring the starting time and the action time of the network-related protection action from the real-time data of the SCADA system;
acquiring a network-related protection action value from real-time data of the WAMS, wherein the network-related protection action value comprises an electrical parameter corresponding to starting time and an electrical parameter corresponding to action time;
setting the net-related protection action value as a net-related protection action fixed value;
and checking the fixed value of the network-related protection action by adopting the network-related protection specification.
Acquiring a power-grid-related protection action value of a power supply of the power-grid-related protection action from real-time data according to a checking type, and checking based on the power-grid-related protection action value, wherein the checking comprises the following steps:
when the checking type is the fixed value checking of the network-related protection time:
acquiring a network-related protection action value from real-time data of the SCADA system, wherein the network-related protection action value comprises starting time and action time of a network-related protection action power supply;
taking the time difference between the starting time and the action time as a fixed value of the network-related protection time;
and checking the fixed value of the network-related protection time by adopting a network-related protection specification.
Acquiring a power-grid-related protection action value of a power supply of the power-grid-related protection action from real-time data according to a checking type, and checking based on the power-grid-related protection action value, wherein the checking comprises the following steps:
acquiring a network-related protection action value from real-time data of the SCADA system and real-time data of the WAMS system based on a network-related protection coordination relationship; the values of the network-related protection actions include: the method comprises the following steps that starting time of a power supply of the;
taking the electrical parameter of the starting time and the electrical parameter of the action time as a network-related protection action constant value, and taking the time difference between the starting time and the action time as a network-related protection time constant value;
and checking the coordination relation of the network-related protection based on the fixed value of the network-related protection action and the fixed value of the network-related protection time by adopting the network-related protection standard corresponding to the coordination relation of the network-related protection.
The network-related protection coordination relationship comprises the following steps: the matching relation of frequency abnormal protection and overspeed protection, the matching relation of rotor overload protection and over-excitation limitation, the matching relation of stator overvoltage protection and over-excitation limitation and the matching relation of stator overcurrent protection and stator overload protection.
The method for acquiring the real-time data of the smart grid dispatching technology support system comprises the following steps:
acquiring real-time data of a smart grid dispatching technology support system from the smart grid dispatching technology support system by utilizing a pre-constructed grid-related protection check data model;
the power supply configuration information and the power supply configuration information are obtained through modeling of the power supply configuration information and the power supply configuration information.
The method for constructing the network-related protection check data model comprises the following steps:
selecting a network-related protection type based on a preset checking specification;
setting a power supply configuration form and a network-related protection parameter configuration form based on the network-related protection type;
and fusing the power supply configuration form and the network-related protection parameter configuration form to obtain a network-related protection check data model.
The power supply includes: a first power supply and a second power supply;
the first power supply comprises a conventional unit and a phase modulator, and the second power supply comprises a new energy station and an energy storage power station;
the conventional unit comprises a thermal power unit and a hydroelectric power unit, and the new energy station comprises a wind power plant and a photovoltaic power station.
The network-involved protection types comprise a first power supply network-involved protection type and a second power supply network-involved protection type of the power supply;
the first power supply grid-related protection type is used for indicating the grid-related protection of the first power supply;
the second power supply grid-related protection type is used for indicating grid-related protection of the second power supply.
The first power supply grid-related protection type comprises the following steps: stator overcurrent protection, stator overvoltage protection, rotor overload protection, stator overload protection, overexcitation protection, frequency anomaly protection, overspeed protection, overexcitation limitation, low excitation limitation and overexcitation limitation;
the second power supply grid-related protection type comprises the following steps: fan overvoltage protection, fan low voltage protection, fan frequency anomaly protection, photovoltaic inverter overvoltage protection, photovoltaic inverter low voltage protection, photovoltaic inverter frequency anomaly protection, energy storage power station overvoltage protection, and energy storage power station low voltage protection.
The power configuration form includes: parameters of the power supply, configuration information of the power supply and an address of real-time data of the wide area measurement system;
the network-related protection parameter configuration form comprises: configuration information of a network-related protection type, protection parameters of the data acquisition and monitoring control system and addresses of real-time data of the data acquisition and monitoring control system.
The application also provides a power supply wades check system of net protection, includes:
the acquisition module is used for acquiring real-time data of the smart grid dispatching technology support system from the smart grid dispatching technology support system based on a pre-constructed grid-related protection check data model;
the scanning module is used for scanning the action state of the power supply to obtain a power supply for the network-related protection action;
and the checking module is used for acquiring the power-related protection action value of the power supply of the power-related protection action from the real-time data according to the checking type and checking the power-related protection action value based on the power-related protection action value.
The intelligent power grid dispatching technology support system comprises a WAMS system and an SCADA system;
the real-time data of the intelligent power grid dispatching technology support system comprises real-time data of the WAMS system and real-time data of the SCADA system.
The checking types comprise: at least one of the fixed value checking of the network-related protection action, the fixed value checking of the network-related protection time and the matching relation checking of the network-related protection.
The checking module is specifically used for:
when the checking type is the network-related protection action fixed value checking:
acquiring the starting time and the action time of a power supply of the network-related protection action from the real-time data of the SCADA system;
acquiring a network-related protection action value from real-time data of the WAMS, wherein the network-related protection action value comprises an electrical parameter corresponding to starting time and an electrical parameter corresponding to action time;
setting the net-related protection action value as a net-related protection action fixed value;
and checking the fixed value of the network-related protection action by adopting the network-related protection specification.
The checking module is specifically used for:
when the checking type is the fixed value checking of the network-related protection time:
acquiring a network-related protection action value from real-time data of the SCADA system, wherein the network-related protection action value comprises starting time and action time of a network-related protection action power supply;
taking the time difference between the starting time and the action time as a fixed value of the network-related protection time;
and checking the fixed value of the network-related protection time by adopting a network-related protection specification.
The checking module is specifically used for:
acquiring a network-related protection action value from real-time data of the SCADA system and real-time data of the WAMS system based on a network-related protection coordination relationship; the values of the network-related protection actions include: the method comprises the following steps that starting time of a power supply of the;
taking the electrical parameter of the starting time and the electrical parameter of the action time as a network-related protection action constant value, and taking the time difference between the starting time and the action time as a network-related protection time constant value;
and checking the coordination relation of the network-related protection based on the fixed value of the network-related protection action and the fixed value of the network-related protection time by adopting the network-related protection standard corresponding to the coordination relation of the network-related protection.
The network-related protection coordination relationship comprises the following steps: the matching relation of frequency abnormal protection and overspeed protection, the matching relation of rotor overload protection and over-excitation limitation, the matching relation of stator overvoltage protection and over-excitation limitation and the matching relation of stator overcurrent protection and stator overload protection.
The acquisition module is used for:
acquiring real-time data of a smart grid dispatching technology support system from the smart grid dispatching technology support system by utilizing a pre-constructed grid-related protection check data model;
the power supply configuration information and the power supply configuration information are obtained through modeling of the power supply configuration information and the power supply configuration information.
The application provides a check device still includes the modeling module, and the modeling module is used for:
selecting a power supply grid-related protection type based on a power supply grid-related protection specification;
setting a power supply configuration form and a network-related protection parameter configuration form based on the network-related protection type;
and fusing the power supply configuration form and the network-related protection parameter configuration form to obtain a network-related protection check data model.
The power supply includes: a first power supply and a second power supply;
the first power supply comprises a conventional unit and a phase modulator, and the second power supply comprises a new energy station and an energy storage power station;
the conventional unit comprises a thermal power unit and a hydroelectric power unit, and the new energy station comprises a wind power plant and a photovoltaic power station.
The network-related protection types comprise: a first power supply grid-related protection type and a second power supply grid-related protection type;
the first power supply grid-related protection type is used for indicating the grid-related protection of the first power supply;
the second power supply grid-related protection type is used for indicating grid-related protection of the second power supply.
The first power supply grid-related protection type comprises the following steps: stator overcurrent protection, stator overvoltage protection, rotor overload protection, stator overload protection, overexcitation protection, frequency anomaly protection, overspeed protection, overexcitation limitation, low excitation limitation and overexcitation limitation;
the second power supply grid-related protection type comprises the following steps: fan overvoltage protection, fan low voltage protection, fan frequency anomaly protection, photovoltaic inverter overvoltage protection, photovoltaic inverter low voltage protection, photovoltaic inverter frequency anomaly protection, energy storage power station overvoltage protection, and energy storage power station low voltage protection.
The power configuration form includes: power supply parameters, power supply configuration information and addresses of real-time data of the WAMS system;
the network-related protection parameter configuration form comprises: configuration information of the network-related protection type, protection parameters of the SCADA system and addresses of real-time data of the SCADA system.
The present application further provides a computer device, comprising:
one or more processors;
a memory for storing one or more programs;
the checking method described above is implemented when one or more programs are executed by one or more processors.
The application also provides a computer readable storage medium, on which a computer program is stored, which, when executed, implements the above-mentioned checking method.
The technical scheme provided by the invention has the following beneficial effects:
according to the checking method for power supply grid involvement protection, real-time data of a smart power grid dispatching technology support system are obtained; scanning the action state of the power supply to obtain a power supply for protecting the action of the power supply; the power supply network-related protection action value is acquired according to the checking type, checking is carried out based on the network-related protection action value, online checking of the power supply network-related protection action power supply can be achieved through real-time data of a smart power grid scheduling technology support system, and the method has wide practicability and real-time performance.
The method and the device for checking the power supply are used for acquiring real-time data of a smart power grid scheduling technology support system based on a power grid related protection checking data model, checking the power grid related protection action constant value, the power grid related protection time constant value and the power grid related protection matching relationship of each power grid related action power supply, timely finding the setting loophole of the coordination matching relationship through checking, guaranteeing the accuracy, reliability and timeliness of data, timely re-checking the power grid related protection action constant value, the power grid related protection time constant value and the power grid related protection matching relationship under the condition that the structure and the operation mode of a power grid are changed, reasonability and adaptability of the power grid related protection action constant value, the power grid related protection time constant value and the power grid related protection matching relationship, and improving the risk resistance of a unit under the extreme condition of the power grid.
The online checking method can comprehensively cover the protection and checking requirements of the power generation and transformation group grid involvement of the existing power plant, and provides an auxiliary decision basis and data support for standardized management of grid involvement parameters of various types of power supplies under the background of large-scale alternating current and direct current hybrid power grids and high new energy occupation ratios.
The online checking method provided by the application shortens the time required by fixed value checking, and effectively reduces the working intensity of regulating and controlling personnel.
Drawings
FIG. 1 is a flowchart of a checking method for power supply grid-related protection according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the calibration criteria of the rotor overload protection and the over-excitation limit coordination relationship in the embodiment of the invention;
fig. 3 is a diagram of a checking system for power supply grid-related protection in the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
The embodiment 1 of the present invention provides a method for checking power supply grid-related protection, where a specific flowchart is shown in fig. 1, and the specific process is as follows:
s101: acquiring real-time data of a smart grid dispatching technology support system from the smart grid dispatching technology support system based on a pre-constructed grid-related protection check data model;
s102: scanning the action state of the power supply to obtain a power supply for protecting the action of the power supply;
s103: and acquiring a power-related protection action value of the power supply of the power-related protection action according to the checking type from the real-time data, and checking based on the power-related protection action value.
The smart grid dispatching technology support System comprises a Wide Area Measurement System (WAMS) And a Supervisory Control And monitoring System (SCADA). The real-time data of the intelligent power grid dispatching technology support system comprises real-time data of the WAMS system and real-time data of the SCADA system.
The checking types comprise: at least one of the fixed value checking of the network-related protection action, the fixed value checking of the network-related protection time and the matching relation checking of the network-related protection.
The method for acquiring the real-time data of the smart grid dispatching technology support system comprises the following steps:
acquiring real-time data of a smart grid dispatching technology support system from the smart grid dispatching technology support system by utilizing a pre-constructed grid-related protection check data model;
the power supply configuration information and the power supply configuration information are obtained through modeling of the power supply configuration information and the power supply configuration information.
The network-related protection checking data model can be constructed based on a network-related protection type, and specifically can be constructed through the following processes:
selecting a network-related protection type based on a preset checking specification;
setting a power supply configuration form and a network-related protection parameter configuration form based on the network-related protection type;
and fusing the power supply configuration form and the network-related protection parameter configuration form to obtain a network-related protection check data model.
The power supply comprises a first power supply and a second power supply;
the first power supply comprises a conventional unit and a phase modulator, and the second power supply comprises a new energy station and an energy storage power station;
the conventional unit comprises a thermal power unit and a hydroelectric power unit, and the new energy station comprises a wind power plant and a photovoltaic power station.
The network-involved protection types comprise a first power supply network-involved protection type and a second power supply network-involved protection type of the power supply;
the first power supply grid-related protection type is used for indicating the grid-related protection of the first power supply;
the second power supply grid-related protection type is used for indicating grid-related protection of the second power supply.
The first grid involvement protection type comprises the following steps: stator overcurrent protection, stator overvoltage protection, rotor overload protection, stator overload protection, overexcitation protection, frequency anomaly protection, overspeed protection, overexcitation limitation, low excitation limitation, and overexcitation limitation.
The second grid involvement protection type comprises the following steps: fan overvoltage protection, fan low voltage protection, fan frequency anomaly protection, photovoltaic inverter overvoltage protection, photovoltaic inverter low voltage protection, photovoltaic inverter frequency anomaly protection, energy storage power station overvoltage protection, and energy storage power station low voltage protection.
The power configuration form includes: parameters of the power supply (such as rated power and rated voltage of a wind turbine generator), configuration information of the power supply (such as specific units and specific new energy stations) and addresses of real-time data of the wide area measurement system;
the above-mentioned network-related protection parameter configuration form: the method comprises configuration information of a network-related protection type, protection parameters of a data acquisition and monitoring control system and addresses of real-time data of the data acquisition and monitoring control system.
Acquiring a power-grid-related protection action value of a power supply of the power-grid-related protection action from real-time data according to a checking type, and checking based on the power-grid-related protection action value, wherein the checking comprises the following steps:
when the checking type is the network-related protection action fixed value checking:
acquiring the starting time and the action time of a power supply of the network-related protection action from the real-time data of the SCADA system;
acquiring a network-related protection action value from real-time data of the WAMS, wherein the network-related protection action value comprises an electrical parameter corresponding to starting time and an electrical parameter corresponding to action time;
setting the net-related protection action value as a net-related protection action fixed value;
and checking the fixed value of the network-related protection action by adopting the network-related protection specification.
Acquiring a power-grid-related protection action value of a power supply of the power-grid-related protection action from real-time data according to a checking type, and checking based on the power-grid-related protection action value, wherein the checking comprises the following steps:
when the checking type is the fixed value checking of the network-related protection time:
acquiring a network-related protection action value from real-time data of the SCADA system, wherein the network-related protection action value comprises starting time and action time of a network-related protection action power supply;
taking the time difference between the starting time and the action time as a fixed value of the network-related protection time;
and checking the fixed value of the network-related protection time by adopting a network-related protection specification.
Acquiring a power-grid-related protection action value of a power supply of the power-grid-related protection action from real-time data according to a checking type, and checking based on the power-grid-related protection action value, wherein the checking comprises the following steps:
based on the grid-related protection coordination relationship, acquiring the starting time of a grid-related protection action power supply related to the grid-related protection coordination relationship, the action time of the grid-related protection action power supply related to the grid-related protection coordination relationship, an electrical parameter corresponding to the starting time and an electrical parameter corresponding to the action time from the real-time data of the SCADA system and the real-time data of the WAMS system;
taking the electrical parameter of the starting time and the electrical parameter of the action time as a network-related protection action constant value, and taking the time difference between the starting time and the action time as a network-related protection time constant value;
and checking the network-related protection coordination relation based on the network-related protection action constant value and the network-related protection time constant value by adopting a network-related protection standard corresponding to the network-related protection coordination relation.
The above-mentioned network-related protection coordination relationship includes: the matching relation of frequency abnormal protection and overspeed protection, the matching relation of rotor overload protection and over-excitation limitation, the matching relation of stator overvoltage protection and over-excitation limitation and the matching relation of stator overcurrent protection and stator overload protection.
Optionally, the grid-related protection specification may include DL/T1309-2013 "grid-related protection technical specification of large-scale generator set" and DL/T1870-2018 "grid source coordination technical specification of power system", that is, the checking of grid-related protection may be implemented based on real-time data of the smart grid scheduling technical support system and by using DL/T1309-2013 "grid-related protection technical specification of large-scale generator set" and DL/T1870-2018 "grid source coordination technical specification of power system".
Further, DL/T1309-2013 technical specification for large-scale generator set grid-related protection specifies a checking specification related to a conventional generator set and a phase modulator, and DL/T1870-2018 technical specification for power system grid source coordination specifies a relevant checking specification related to a new energy field station and an energy storage power station.
It should be noted that, in the process of checking the grid-related protection, reference may be made to GB/T31464-2015 "grid operating criteria" and GB/T14285 "relay protection and safety automation device technical rules" in addition to the above two technical specifications.
Example 2
In embodiment 2 of the present application, the conventional unit frequency anomaly protection is taken as an example to illustrate an online checking method for the multi-type power supply grid-related protection fixed value. The online checking method comprises the following steps:
s201: constructing a frequency anomaly protection offline data model:
and setting a power supply configuration form and a network-related protection parameter configuration form based on DL/T1309-2013 'technical specification for large-scale generator set network-related protection' and DL/T1870-2018 'technical specification for power system network source coordination'. And fusing the power supply configuration form and the network-related protection parameter configuration form according to the frequency anomaly protection checking requirement to obtain a frequency anomaly protection checking data model. The frequency anomaly protection check data model data entry includes: the system comprises a factory station Chinese name, a generator set type, a generator set frequency real-time data address, an over-frequency protection 51.5Hz action address, an over-frequency protection 51Hz action address, an over-frequency protection 50.5Hz action address, a low-frequency protection 48.5Hz action address, a low-frequency protection 48Hz action address, a low-frequency protection 47.5Hz action address, a low-frequency protection 47Hz action address and a low-frequency protection 46.5Hz action address.
S202: real-time data reading:
and reading real-time frequency data of the unit in the power grid from the D5000 platform WAMS system and reading the abnormal frequency protection action state and action time of the unit in the power grid from the D5000 platform SCADA system based on the abnormal frequency protection check data model.
S203: scanning the action state of each unit in the power supply to obtain a frequency abnormal protection action unit;
s204: and (3) frequency anomaly protection online check:
and checking the frequency abnormality protection action unit by adopting a preset checking standard based on the real-time data of the unit frequency and the abnormal frequency protection action state and action time of the unit. The specific checking process is as follows:
i. and selecting the abnormal frequency protection action state of the single unit in the power grid, judging the protection action when the abnormal frequency protection action state is 1, and judging the protection return when the abnormal frequency protection action state is 0. Adopting OR operation for each section of frequency abnormality protection action state, entering a step ii when the frequency abnormality protection action state is 1, and performing frequency abnormality protection fixed value check on the unit; otherwise, continuously selecting the frequency abnormality protection action state of the next unit for checking;
and ii, checking the fixed value of the frequency abnormality protection action: positioning a unit frequency real-time value at the unit frequency abnormal protection action moment in WAMS unit frequency real-time data according to the frequency abnormal protection action time, comparing the unit frequency real-time value with a frequency abnormal protection fixed value required by DL/T1309-2013 'large-scale generator unit network-related protection technical specification', and checking whether the unit frequency action real-time value meets the frequency abnormal protection fixed value requirement;
checking the fixed value of the frequency anomaly protection time: the frequency protection action time fixed value checking can be divided into single frequency abnormity checking and accumulated frequency abnormity checking, and the single frequency abnormity checking and the accumulated frequency abnormity checking need to perform subsection checking according to items set by preset checking specifications (DL/T1309-2013, large-scale generator set network-related protection technical specifications).
Further, single frequency anomaly checking: recording the starting time and the action time of frequency protection, obtaining the protection action delay time by making a time difference between the starting time and the action time, comparing the delay time with the single time specified by DL/T1309-2013 technical Specification for protecting the large-scale generator set with a network, and checking whether the fixed value of the frequency abnormal protection single action time meets the specification requirement;
further, checking the accumulated frequency abnormality: recording and accumulating the single protection action delay time in a software program, reading accumulated time difference data from the software program at the frequency abnormal protection action moment to obtain frequency abnormal accumulated delay time, comparing the accumulated delay time with the accumulated time specified in DL/T1309-2013 'Large Generator set grid related protection technical Specification', and checking whether the frequency abnormal protection accumulated action time fixed value meets the specification requirement;
when the frequency anomaly protection fixed value and the protection action time both meet the requirements of a preset checking specification (DL/T1309-2013, the technical specification of large-scale generator set network-related protection), the checking result is recorded as follows: the XX unit frequency abnormity protection action meets the requirement; otherwise, the checking result is recorded as: and the XX unit frequency abnormity protection action does not meet the requirement.
S205: whether all the units in the power grid are checked completely or not is judged, if yes, the checking task of the current round is finished, and the next round of checking judgment is carried out; otherwise, continuing to check the frequency abnormity protection fixed value of the next unit.
Example 3
In embodiment 3 of the present application, rotor overload protection is taken as an example to describe a method for multi-type power supply grid-related protection and limit coordination relationship checking. The online checking method comprises the following steps:
s301: constructing an off-line data model of rotor overload protection and overexcitation limitation:
and setting a power supply configuration form and a network-related protection parameter configuration form based on DL/T1309-2013 'technical specification for large-scale generator set network-related protection' and DL/T1870-2018 'technical specification for power system network source coordination'. And according to the rotor overload protection and over-excitation limitation check requirements, fusing the power supply configuration form and the network-related protection parameter configuration form to obtain a sub-overload protection and over-excitation limitation check data model. And obtaining a rotor overload protection and over excitation limit check data model. The rotor overload protection and overexcitation limit checking data model entries include: the system comprises a factory station Chinese name, a generator set type, an excitation current address, an over-excitation limiting action signal address, a rotor overload protection inverse time limit action address, a rated excitation current, a rotor overload protection inverse time limit starting value and an over-excitation limiting starting value.
S302: real-time data reading:
and reading out real-time excitation current data of the internal unit of the power grid from the D5000 platform WAMS system and reading out an over-excitation action state of the internal unit of the power grid and an inverse time-limit action state of the rotor overload protection from the D5000 platform SCADA system based on a data model for checking the rotor overload protection and the over-excitation limitation.
S303: scanning the action state of each unit in the power supply to obtain a rotor overload protection action unit;
s304: rotor overload protection and over excitation limitation are matched for on-line checking:
and checking the coordination of the rotor overload protection and the overexcitation limit by adopting a preset checking standard based on the real-time data of the excitation current of the unit, the overexcitation limit action state, the rotor overload protection inverse time limit action time, the rotor overload protection inverse time limit starting value and the overexcitation limit starting value. The specific checking process is as follows:
i. and selecting an over-excitation limiting action state and a rotor overload protection inverse time limit action state of a single unit in the power grid, wherein the over-excitation limiting action state and the rotor overload protection inverse time limit action state are judged to be protection actions when being 1, and the protection returns when being 0. Adopting OR operation on the over-excitation limiting action state and the rotor overload protection inverse time limit action state, entering a step ii when the protection limiting action state is 1, and carrying out on-line checking on the rotor overload protection and the over-excitation limitation matching on the unit; otherwise, continuously selecting the overexcitation limiting action state and the rotor overload protection inverse time limit action state of the next unit for checking;
and ii, checking the matching relation between the rotor overload protection and the overdrive limitation according to DL/T1309-2013 'technical Specification for large-scale generator set grid-related protection'. The checking criterion of the matching relation between the rotor overload protection and the over-excitation limit is shown in fig. 2, the abscissa represents time, the ordinate represents the per unit value of the excitation current, the solid line with dots represents an allowable overload curve of the turbonator, the solid line with triangles represents a rotor overload protection inverse time limit curve, and the solid line with squares represents an over-excitation limit inverse time limit curve.
The matching verification requirements of the rotor overload protection and the over excitation limitation are as follows:
1) the overload and over-excitation limiting fixed value cannot be higher than the overload capacity curve of the generator rotor, otherwise, the overload and over-excitation limiting fixed value cannot play a role in protecting the generator;
2) the level difference of the overload and over-excitation limiting fixed value lower than the overload capacity curve of the generator rotor cannot be too large, otherwise the capacity of the generator is restrained;
3) the overdrive limit should precede the overload protection action.
Then, when the excitation current of the unit exceeds the inverse time limit starting value or the over-excitation limit starting value of the rotor overload protection, the excitation current is subjected to integral processing from the out-of-limit time, and an inverse time limit heat accumulation value is calculated:
C＝(I2-1)×t
in the formula: c represents a reverse time-limited heat accumulation value; i represents a rotor current per unit value; t represents time and may be in units of s.
When the over-excitation limiting action or the rotor overload protection action is carried out, the integral calculation of the reverse time heat-limiting accumulated value is stopped, the integral value C1 of the reverse time heat-limiting accumulated value of the current rotor overload protection and the integral value C2 of the reverse time heat-limiting accumulated value of the rotor overload protection are recorded, the calculated values are compared with the specified fixed values of DL/T1309-2013 'technical Specification for large-scale generator set network-related protection', and the coordination of the unit rotor overload protection and the over-excitation limitation is checked. The specific checking conditions are as follows:
when C1 is less than 33.75, C2 is less than 33.75 and C2 is less than C1, judging that the rotor overload protection action and the over-excitation limit are matched to meet the requirement; otherwise, judging that the rotor overload protection action and the overdrive limit are not matched with the requirement.
And iii, aiming at the checking, giving an online checking result of the cooperation of the overload protection and the over excitation limitation of the unit rotor. If the checking results all meet the regulations of DL/T1309-2013 'Large Generator set grid-related protection technical Specification', the checking results are recorded as follows: the overload protection action of the XX unit rotor is matched with the over-excitation limit to meet the requirement; otherwise, the checking result is recorded as: and the XX unit rotor overload protection action is not matched with the over-excitation limit to meet the requirement.
S305: whether all the units in the power grid are checked completely or not is judged, if yes, the checking task of the current round is finished, and the next round of checking judgment is carried out; otherwise, continuing to check the rotor overload protection and the overdrive limit of the next unit.
Example 4
An embodiment 4 of the present invention provides a checking system for power supply grid-related protection, as shown in fig. 3, including:
the acquisition module is used for acquiring real-time data of the smart grid dispatching technology support system from the smart grid dispatching technology support system based on a pre-constructed grid-related protection check data model;
the scanning module is used for scanning the action state of the power supply to obtain a power supply for the network-related protection action;
and the checking module is used for acquiring the power-related protection action value of the power supply of the power-related protection action from the real-time data according to the checking type and checking the power-related protection action value based on the power-related protection action value.
The acquisition module is used for:
acquiring real-time data of a smart grid dispatching technology support system from the smart grid dispatching technology support system by utilizing a pre-constructed grid-related protection check data model; the power supply configuration information and the power supply configuration information are obtained through modeling of the power supply configuration information and the power supply configuration information.
The power supply grid-related protection checking system provided in embodiment 4 of the present application further includes a modeling module, where the modeling module is specifically configured to:
selecting a network-related protection type based on a preset checking specification;
setting a power supply configuration form and a network-related protection parameter configuration form based on the network-related protection type;
and fusing the power supply configuration form and the network-related protection parameter configuration form to obtain a network-related protection check data model.
The power supply includes: a first power supply and a second power supply;
the first power supply comprises a conventional unit and a phase modulator, and the second power supply comprises a new energy station and an energy storage power station;
the conventional unit comprises a thermal power unit and a hydroelectric power unit, and the new energy station comprises a wind power plant and a photovoltaic power station.
The network-involved protection types comprise a first power supply network-involved protection type and a second power supply network-involved protection type of the power supply;
the first power supply grid-related protection type is used for indicating the grid-related protection of the first power supply;
the second power supply grid-related protection type is used for indicating grid-related protection of the second power supply.
The first power supply grid-related protection type comprises the following steps: stator overcurrent protection, stator overvoltage protection, rotor overload protection, stator overload protection, overexcitation protection, frequency anomaly protection, overspeed protection, overexcitation limitation, low excitation limitation and overexcitation limitation;
the second power supply grid-related protection type comprises the following steps: fan overvoltage protection, fan low voltage protection, fan frequency anomaly protection, photovoltaic inverter overvoltage protection, photovoltaic inverter low voltage protection, photovoltaic inverter frequency anomaly protection, energy storage power station overvoltage protection, and energy storage power station low voltage protection.
The power configuration form includes: parameters of the power supply, configuration information of the power supply and an address of real-time data of the wide area measurement system;
the network-related protection parameter configuration form comprises: configuration information of a network-related protection type, protection parameters of the data acquisition and monitoring control system and addresses of real-time data of the data acquisition and monitoring control system.
The checking module is specifically used for:
when the checking type is the network-related protection action fixed value checking:
acquiring the starting time and the action time of a power supply of the network-related protection action from the real-time data of the SCADA system;
acquiring a network-related protection action value from real-time data of the WAMS, wherein the network-related protection action value comprises an electrical parameter corresponding to starting time and an electrical parameter corresponding to action time;
setting the net-related protection action value as a net-related protection action fixed value;
and checking the fixed value of the network-related protection action by adopting the network-related protection specification.
The checking module is specifically used for:
when the checking type is the fixed value checking of the network-related protection time:
acquiring a network-related protection action value from real-time data of the SCADA system, wherein the network-related protection action value comprises starting time and action time of a network-related protection action power supply;
taking the time difference between the starting time and the action time as a fixed value of the network-related protection time;
and checking the fixed value of the network-related protection time by adopting a network-related protection specification.
The checking module is specifically used for:
acquiring a power-grid-related protection action value from real-time data of the SCADA system and real-time data of the WAMS system based on a power-grid-related protection coordination relationship to be checked, wherein the power-grid-related protection action value comprises starting time of a power-grid-related protection action power supply related to the power-grid-related protection coordination relationship, starting time action time of the power-grid-related protection action power supply related to the power-grid-related protection coordination relationship, an electrical parameter corresponding to the starting time and an electrical parameter corresponding to the action time;
taking the electrical parameter of the starting time and the electrical parameter of the action time as a network-related protection action constant value, and taking the time difference between the starting time and the action time as a network-related protection time constant value;
and checking the coordination relation of the network-related protection based on the fixed value of the network-related protection action and the fixed value of the network-related protection time by adopting the network-related protection standard corresponding to the coordination relation of the network-related protection.
The network-related protection coordination relationship comprises the following steps: the matching relation of frequency abnormal protection and overspeed protection, the matching relation of rotor overload protection and over-excitation limitation, the matching relation of stator overvoltage protection and over-excitation limitation and the matching relation of stator overcurrent protection and stator overload protection.
The grid-related protection specifications comprise DL/T1309-2013 grid-related protection technical specification of large-scale generator sets and DL/T1870-2018 grid source coordination technical specification of power systems.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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 application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. 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 intended to illustrate the technical solution of the present invention and not to limit the same, and a person of ordinary skill in the art can make modifications or equivalent substitutions to the specific embodiments of the present invention with reference to the above embodiments, and any modifications or equivalent substitutions which do not depart from the spirit and scope of the present invention are within the protection scope of the present invention as claimed in the appended claims.

Claims (16)

1. A power supply grid-related protection checking method is characterized by comprising the following steps:
acquiring real-time data of a support system of a smart grid dispatching technology;
scanning the action state of the power supply to obtain a power supply for protecting the action of the power supply;
and acquiring a power-related protection action value of the power supply of the power-related protection action according to the checking type, and checking based on the power-related protection action value.
2. The power supply grid-involvement protection verification method according to claim 1, wherein the smart grid scheduling technology support system comprises a WAMS system and a SCADA system;
the real-time data of the intelligent power grid dispatching technology support system comprises real-time data of the WAMS system and real-time data of the SCADA system.
3. The method for checking power supply grid-involvement protection according to claim 2, wherein the checking types comprise: at least one of the fixed value checking of the network-related protection action, the fixed value checking of the network-related protection time and the matching relation checking of the network-related protection.
4. The method for checking power supply grid-related protection according to claim 3, wherein the obtaining of the grid-related protection action value of the grid-related protection action power supply from the real-time data according to the checking type and checking based on the grid-related protection action value include:
when the checking type is the network-related protection action fixed value checking:
acquiring the starting time and the action time of the power supply of the network-related protection action from the real-time data of the SCADA system;
acquiring the network-related protection action value from the real-time data of the WAMS, wherein the network-related protection action value comprises an electrical parameter corresponding to the starting time and an electrical parameter corresponding to the action time;
setting the network-related protection action value as the network-related protection action constant value;
and checking the network-related protection action fixed value by adopting a network-related protection specification.
5. The method for checking power supply grid-related protection according to claim 3, wherein the step of obtaining the grid-related protection action value of the grid-related protection action power supply from the real-time data according to the checking type and checking the power supply grid-related protection action value based on the grid-related protection action value comprises the steps of:
when the checking type is the fixed value checking of the network-related protection time:
acquiring the network-related protection action value from real-time data of the SCADA system, wherein the network-related protection action value comprises starting time and action time of a network-related protection action power supply;
taking the time difference between the starting time and the action time as a fixed value of the network-related protection time;
and checking the fixed value of the network-related protection time by adopting a network-related protection specification.
6. The method for checking power supply grid-related protection according to claim 3, wherein the obtaining of the grid-related protection action value of the grid-related protection action power supply from the real-time data according to the checking type and checking based on the grid-related protection action value include:
acquiring the network-related protection action value from the real-time data of the SCADA system and the real-time data of the WAMS system based on the network-related protection coordination relationship; the value of the network-related protection action comprises: the starting time of the power supply;
taking the electric parameter of the starting time and the electric parameter of the action time as the fixed value of the network-related protection action, and taking the time difference between the starting time and the action time as the fixed value of the network-related protection time;
and checking the coordination relation of the network-related protection based on the fixed value of the network-related protection action and the fixed value of the network-related protection time by adopting the network-related protection specification corresponding to the coordination relation of the network-related protection.
7. The method for checking power supply grid-related protection according to claim 6, wherein the grid-related protection coordination relationship comprises: the matching relationship between the frequency abnormality protection and the overspeed protection, the matching relationship between the rotor overload protection and the overexcitation limit, the matching relationship between the stator overvoltage protection and the overexcitation limit, and the matching relationship between the stator overcurrent protection and the stator overload protection.
8. The method for checking power supply grid involvement protection according to any one of claims 1 to 7, wherein the acquiring of the real-time data of the smart grid scheduling technology support system comprises:
acquiring real-time data of a smart grid dispatching technology support system from the smart grid dispatching technology support system by utilizing a pre-constructed grid-related protection check data model;
the power supply configuration information and the power supply configuration information are obtained through modeling of the power supply configuration information and the power supply configuration information.
9. The power supply grid-related protection checking method according to claim 8, wherein the construction of the power supply grid-related protection checking data model comprises the following steps:
selecting a power supply grid-related protection type based on a power supply grid-related protection specification;
setting a power supply configuration form and a network-related protection parameter configuration form based on the network-related protection type;
and fusing the power supply configuration form and the network-related protection parameter configuration form to obtain a network-related protection check data model.
10. The method for checking power supply grid-involvement protection according to claim 8, wherein the power supply comprises: a first power supply and a second power supply;
the first power supply comprises a conventional unit and a phase modulator, and the second power supply comprises a new energy station and an energy storage power station;
the conventional unit comprises a thermal power unit and a hydroelectric power unit, and the new energy station comprises a wind power station and a photovoltaic power station.
11. The method for checking power supply grid-related protection according to claim 10, wherein the grid-related protection type includes: a first power supply grid-related protection type and a second power supply grid-related protection type;
the first power supply grid-related protection type is used for indicating grid-related protection of the first power supply;
the second power supply grid-related protection type is used for indicating grid-related protection of the second power supply.
12. The method for checking power supply grid-involvement protection according to claim 11, wherein the first power supply grid-involvement protection type comprises: stator overcurrent protection, stator overvoltage protection, rotor overload protection, stator overload protection, overexcitation protection, frequency anomaly protection, overspeed protection, overexcitation limitation, low excitation limitation and overexcitation limitation;
the second power supply grid involvement protection type comprises: fan overvoltage protection, fan low voltage protection, fan frequency anomaly protection, photovoltaic inverter overvoltage protection, photovoltaic inverter low voltage protection, photovoltaic inverter frequency anomaly protection, energy storage power station overvoltage protection, and energy storage power station low voltage protection.
13. The method for checking power supply grid-involvement protection according to claim 9, wherein the power supply configuration form comprises: power supply parameters, power supply configuration information and addresses of real-time data of the WAMS system;
the network-related protection parameter configuration form comprises: configuration information of the network-related protection type, protection parameters of the SCADA system and addresses of real-time data of the SCADA system.
14. A power supply is concerned with check system of net protection which characterized in that includes:
the acquisition module is used for acquiring real-time data of the intelligent power grid dispatching technology support system from the intelligent power grid dispatching technology support system by utilizing a pre-constructed grid-related protection check data model;
the scanning module is used for scanning the action state of the power supply to obtain a power supply for the network-related protection action;
and the checking module is used for acquiring the network-related protection action value of the network-related protection action power supply from the real-time data according to the checking type and checking based on the network-related protection action value.
15. A computer device, comprising:
one or more processors;
a memory for storing one or more programs;
the one or more programs, when executed by the one or more processors, implement the collation method according to any one of claims 1 to 13.
16. A computer-readable storage medium, having stored thereon a computer program which, when executed, implements a checking method according to any one of claims 1 to 13.
CN202111007256.1A 2021-08-30 2021-08-30 Power supply grid-related protection checking method and system Pending CN113937774A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116819209A (en) * 2023-06-29 2023-09-29 广州市兆能有限公司 Method and system for testing network-related performance of energy storage power station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116819209A (en) * 2023-06-29 2023-09-29 广州市兆能有限公司 Method and system for testing network-related performance of energy storage power station
CN116819209B (en) * 2023-06-29 2023-12-26 广州市兆能有限公司 Method and system for testing network-related performance of energy storage power station

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