Fixed value setting and checking method and system for safety and stability control device

Abstract

The invention discloses a fixed value setting and checking method for a safety and stability control device. The fixed value setting and checking method comprises the following steps of (1) setting a reference fixed value template of a generation device; (2) the initial setting value is imported and preprocessed; (3) checking the pre-processed setting constant value according to a device reference constant value template; (4) outputting a checking result; according to the invention, the fixed value setting efficiency, standardization degree and safety of the safety and stability control device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid safety and stability control, and in particular to a method and system for setting and verifying fixed values ​​of a safety and stability control device. Background Art

[0002] The safety and stability control device is a control device installed in a power plant or substation to ensure the stability of the power system when encountering large disturbances. It realizes functions such as machine cutting, load cutting, rapid output reduction, and emergency increase or decrease of DC power. It is an important facility to maintain the safe and stable operation of the power system.

[0003] The setting value of the safety and stability control device (referred to as the setting value) is the basis for the realization of the main functions of the safety and stability control device. According to the different physical meanings of the setting value, it is usually divided into equipment parameter setting value, basic criterion setting value and strategy setting value. Among them, the equipment parameter setting value and basic criterion setting value are set by the stability control equipment manufacturer according to the PT, CT and measured parameters provided by the equipment operation and maintenance unit, and the strategy setting value is set and issued by the control department.

[0004] The realization of the overall function of the safety and stability control device depends on the correct setting of the above three types of set values. However, the current setting and verification management process of the device set values ​​is mainly aimed at the strategic set values ​​issued by the control department. There is no effective setting and verification means for the set values ​​set by the equipment manufacturers themselves, and there is a certain risk in the realization of the device function. Summary of the invention

[0005] Purpose of the invention: The purpose of the present invention is to provide a method and system for setting and verifying constants of a safe and stable control device, which solves the problems existing in the background technology by setting and verifying the constants of different types of devices.

[0006] Technical solution: A method for setting and checking a fixed value of a safety and stability control device according to the present invention comprises the following steps: (1) Set and generate the reference setting template of the device; (2) Import the initial setting value and perform preprocessing; (3) Set the set value after pre-processing based on the reference set value template of the device; (4) Output the verification results.

[0007] Among them, in step (1), the template includes: device sampling, component scheduling name, component primary and secondary equipment parameters, component category, component strategy function, component fault type, component associated switch quantity, and component pressure plate configuration. Among them, the naming of the device sampling component should be named according to the naming file issued by the device control department. The primary and secondary equipment parameters of the component in the setting list are set according to the actual parameters of the on-site components provided by the operation and maintenance department. The sampling components are classified into: lines, busbars, main transformers, units, and converter transformers. The strategic functions of the components are classified into: overload, high voltage, low voltage, overfrequency, and low frequency. The fault types that the components need to judge are classified into: single-phase instantaneous tripping, single-phase permanent tripping, phase-to-phase fault tripping, and no-fault tripping. The switch quantity associated with the component is set, mainly including the component switch position signal and the component protection tripping signal, and its switch quantity is refined to be a total signal or a phase signal. The component pressure plate configuration is set, mainly including a maintenance pressure plate or a control pressure plate.

[0008] At the same time, based on the setting calculation methods of relevant categories of components in normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", the reference set value of this device is calculated and generated, and the reference set value setting range including maximum and minimum values ​​is generated simultaneously.

[0009] Furthermore, in step (2), the fixed values ​​of different formats of different devices are imported and preprocessed and normalized into a unified format; then the fixed values ​​imported into the device are rearranged into the fixed value list according to the component scheduling name and the component category keywords. Specifically, the initial fixed value of the device to be adjusted is jointly set by the equipment manufacturer, the equipment operation and maintenance unit and the equipment control department. Since the fixed value formats exported by devices of different manufacturers are diverse, such as TXT, XML, PDF, etc., the system normalizes the imported fixed value list into Excel format. Read the imported fixed value entries, extract the component category keywords in the fixed value name, and rearrange the fixed value list according to the component category keywords. The fixed value of each entry includes "fixed value name", "setting range", "setting step", "setting value" and "unit". The fixed value to be adjusted is formally divided into numerical fixed values ​​and control word fixed values, and the control word bit definition setting is performed for the control word fixed value.

[0010] Furthermore, in step (3), the constant items are divided into numerical constants and control word constants, and the bit definition of the control word constants is set; then, after the constraint relationship between the constants is established based on normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", they are checked against the reference constants. Specifically, for numerical constants, the system check is mainly carried out from the aspects of the numerical range, numerical size, numerical decimal places and numerical units of the constants; for control word constants, the constants are checked according to the control word bit definition. The "setting value" of each constant after preprocessing is checked once according to the "setting range" and "setting step" of its constant entry to check the correctness of the setting of the constant. For each numerical value of the preprocessed fixed value, match the fixed value name with the device reference fixed value item generated by the function setting module, compare its "set value" with the range value of the reference fixed value, and compare the fixed value "unit" with the reference fixed value unit to check the rationality of the fixed value setting. The control word type fixed value is usually a setting value such as function and configuration. It is checked according to the control word bit definition and the device reference fixed value generated by the function setting module to determine whether the function setting of the corresponding component is complete.

[0011] Furthermore, in step (4), for the device constants that have not passed the verification, the constant items with setting errors and the causes of the errors are output; for the device constants that have passed the verification, the corresponding constant check codes are generated; and the verification results are output respectively using two different verification methods based on hash values ​​and CRC check values. Specifically, if the preprocessed constant item does not match the corresponding constant in the reference constant generated by the function setting module, the constant unmatched flag is output. If the "setting value" of the preprocessed constant item does not meet its "setting range" and "setting step", the constant setting irregular flag is output. If the preprocessed numerical constant does not match the reference constant range generated by the function setting module, the constant rationality weak flag is output. If the preprocessed control word constant does not match the reference constant generated by the function setting module, the function setting incomplete flag is output. For the device constants that have passed the verification, the constants are processed by components, and the hash value code and CRC check code of the component constant are calculated by block.

[0012] The present invention provides a constant value setting and verification system for a safety and stability control device, comprising: Function setting module: used to set and generate reference setting templates for devices; Set value preprocessing module: used to import and preprocess the initial set value; Set value verification module: used to verify the set value after preprocessing according to the device reference set value template; Output module: used to output verification results.

[0013] Furthermore, in the function setting module, the template includes: device sampling, component scheduling name, component primary and secondary equipment parameters, component category, component strategy function, component fault type, component related switch quantity, and component pressure plate configuration. And based on the setting calculation method of relevant categories of components in normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control System", the reference set value of this device is calculated and generated, and the reference set value setting range including maximum and minimum values ​​is generated simultaneously.

[0014] Furthermore, in the constant value preprocessing module, constant values ​​of different formats of different devices are imported for preprocessing and normalized into a unified format; then the constant values ​​imported into the device are rearranged into the constant value list according to the component scheduling name and component category keywords.

[0015] Furthermore, in the constant value verification module, the constant value items are divided into numerical constants and control word constants, and the control word constants are bit defined; then, after the constraint relationship between the constants is established based on normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", they are verified with the reference constants.

[0016] Furthermore, in the output module, for the device constants that have not passed the verification, the constant value items with setting errors and the causes of the errors are output; for the device constants that have passed the verification, the corresponding constant value verification codes are generated; and the verification results are output respectively using two different verification methods based on hash values ​​and CRC verification values.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. It realizes the setting and verification of different types of fixed values ​​of safety and stability control devices. 2. It improves the efficiency, standardization and safety of the fixed value setting of safety and stability control devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the system composition of the present invention; Figure 2 It is a flow chart of the method execution of the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0020] like Figure 2 As shown, an embodiment of the present invention provides a method for setting and verifying a fixed value of a safety and stability control device, comprising the following steps: (1) Set the reference setting template of the device; the template includes: device sampling, component scheduling name, component primary and secondary equipment parameters, component category, component strategy function, component fault type, component-related switch quantity, and component pressure plate configuration. Among them, the naming of the device sampling components should be named according to the naming file issued by the device control department. The primary and secondary equipment parameters of the components in the setting list are set according to the actual parameters of the on-site components provided by the operation and maintenance department. The sampling components are classified into: lines, busbars, main transformers, units, and converter transformers. The strategic functions of the components are classified into: overload, high voltage, low voltage, overfrequency, and low frequency. The fault types that the components need to judge are classified into: single-phase instantaneous tripping, single-phase permanent tripping, phase-to-phase fault tripping, and no-fault tripping. The switch quantity associated with the component is set, mainly including the component switch position signal and the component protection tripping signal, and the switch quantity is set in detail as a total signal or a phase signal. The component pressure plate configuration is set, mainly including the maintenance pressure plate or the control pressure plate. Based on the setting calculation methods of relevant categories of components in normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", the reference set value of this device is calculated and generated, and the reference set value setting range including the maximum and minimum values ​​is simultaneously generated.

[0021] (2) Import the fixed values ​​of different formats of different devices and normalize them into a unified format after preprocessing; then rearrange the fixed value list according to the component scheduling name and component category keywords when importing the fixed values ​​of the device. The details are as follows: The initial fixed value of the device to be adjusted is jointly set by the equipment manufacturer, the equipment operation and maintenance unit and the equipment control department. Since the fixed value formats exported by devices of different manufacturers are diverse, such as TXT, XML, PDF, etc., the system normalizes the imported fixed value list into Excel format. Read the imported fixed value entries, extract the component category keywords in the fixed value name, and rearrange the fixed value list according to the component category keywords. The fixed value of each entry includes "fixed value name", "setting range", "setting step", "setting value" and "unit". The fixed value to be adjusted is formally divided into numerical fixed values ​​and control word fixed values. For the control word fixed values, the control word bit definition setting is performed.

[0022] (3) Verify the set value after preprocessing according to the reference set value template of the device; divide the set value items into numerical set values ​​and control word set values, and set the bit definition of the control word set values; then, establish the constraint relationship between the set values ​​based on Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems" and other normative documents, and verify them with the reference set values. Specifically as follows: For numerical set values, the system verification is mainly carried out from the aspects of the numerical range, numerical size, numerical decimal places and numerical units of the set values; for control word set values, the set values ​​are verified according to the control word bit definition. The "setting value" of each set value after preprocessing is verified according to the "setting range" and "setting step" of its set value item to verify the correctness of the set value setting. For each numerical value of the preprocessed fixed value, match the fixed value name with the device reference fixed value item generated by the function setting module, compare its "set value" with the range value of the reference fixed value, and compare the fixed value "unit" with the reference fixed value unit to check the rationality of the fixed value setting. The control word type fixed value is usually a setting value such as function and configuration. It is checked according to the control word bit definition and the device reference fixed value generated by the function setting module to determine whether the function setting of the corresponding component is complete.

[0023] (4) Output the verification results. For the device constants that fail the verification, output the constant items with setting errors and the causes of the errors; for the device constants that pass the verification, generate the corresponding constant check codes; and use two different verification methods based on hash values ​​and CRC check values ​​to output the verification results respectively. Specifically, if the preprocessed constant item does not match the corresponding constant in the reference constant generated by the function setting module, then the constant mismatch flag is output. If the "setting value" of the preprocessed constant item does not meet its "setting range" and "setting step", then the constant setting irregular flag is output. If the preprocessed numerical constant does not match the reference constant range generated by the function setting module, then the constant rationality weak flag is output. If the preprocessed control word constant does not match the reference constant generated by the function setting module, then the function setting incomplete flag is output. For the device constants that pass the verification, the constants are divided into blocks according to the components, and the hash value code and CRC check code of the component constant are calculated and generated according to the blocks.

[0024] Assume that the safety and stability control device of a station needs to collect the high-voltage side of two 220kV main transformers and five 35kV collector lines. The control strategy of the device is to judge the fault of the main transformer component N-1 and select the 35kV collector line. The station setting value has not been set and verified yet. Enter the system function setting module. According to the naming file issued by the station control department and the primary and secondary parameters of the equipment provided by the operation and maintenance department, set the component dispatching name and primary and secondary parameters of the two main transformers and five collector lines respectively. Select the component categories as main transformer and line. For the fault type of the main transformer component, select "single-phase instantaneous trip", "single-phase permanent trip", "phase-to-phase fault trip" and "no fault trip" at the same time. The main transformer component is associated with the phase position signal, and the main transformer component is configured with a maintenance pressure plate; the fault type of the line component is not selected, the line component is not associated with the switch signal, and the line component is configured with a control pressure plate. Based on the above initial settings, the reference setting value of this station is generated. The equipment manufacturer, equipment operation and maintenance unit and equipment control department shall respectively set the proposed initial set values ​​of the device. At this time, the proposed initial set values ​​in the device shall be imported into the system for preprocessing, and the set values ​​shall be rearranged according to the component category and component name. After obtaining the preprocessed set value list, the "set value" of each set value shall be checked once according to the "set range" and "set step" of its set value item. If they do not match, an irregular set value setting mark shall be output for the corresponding set value item; the preprocessed set value list shall be checked with the generated reference set value template. If the numerical set value is inconsistent with the set value range in the reference set value template, a weak set value rationality mark shall be output for the corresponding set value item; if the control word set value is inconsistent with the set value in the reference set value template, an imperfect function setting mark shall be output for the corresponding set value item; if the preprocessed set value list does not match the reference set value template, an imperfect function setting mark shall be output for the corresponding set value item; if the preprocessed set value list does not match the reference set value template, an imperfect function setting mark shall be output for the corresponding set value item; if the preprocessed set value list does not match the reference set value template, an imperfect function setting mark shall be output for the corresponding set value item. For the set value items matched to the reference set value template, the set value unmatched mark is output for the corresponding set value items. If all the set values ​​pass the verification, all the set value items are divided into blocks according to the component name and the hash value code and CRC check code of the component set value are calculated respectively, and the two code values ​​of each component set value block at this time are recorded; if the subsequent operation and maintenance needs to check the set value of this device again, the check code values ​​of the set value blocks of each component of this device can be directly compared to see if they are consistent with the previously recorded ones. If they are consistent, it is determined that the set value is correctly adjusted. If they are inconsistent, the changed component set value blocks are compared to determine the modified set value items.

[0025] like Figure 1 As shown, an embodiment of the present invention further provides a setting value adjustment and verification system for a safety and stability control device, comprising: Function setting module: used to set the reference setting template of the device; the template includes: device sampling, component scheduling name, component primary and secondary equipment parameters, component category, component strategy function, component fault type, component related switch quantity, component pressure plate configuration. Based on the setting calculation method of relevant categories of components in normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control System", the reference setting of this device is calculated and generated, and the reference setting range including maximum and minimum values ​​is generated simultaneously.

[0026] Constant value preprocessing module: used to import and preprocess the initial constant values; import constant values ​​of different devices in different formats and normalize them into a unified format after preprocessing; then re-arrange the constant value list according to the component scheduling name and component category keywords after importing the constant values ​​of the device.

[0027] Constant value verification module: used to verify the set values ​​after preprocessing according to the reference constant value template of the device; divide the constant value items into numerical constants and control word constants, and set the bit definition of the control word constants; then establish the constraint relationship between the constants based on normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", and then verify them with the reference constants.

[0028] Output module: used to output the verification results. For the device settings that failed the verification, the setting items with setting errors and the reasons for the errors are output; for the device settings that passed the verification, the corresponding setting verification code is generated; the verification results are output respectively using two different verification methods based on hash value and CRC verification value.

Claims

1. A method for setting and verifying a fixed value of a safety and stability control device, characterized in that: The following steps are involved: (1) Set the reference value template of the generating device; (2) Import the initial setting value and perform preprocessing; (3) Set the set value after pre-processing based on the reference set value template of the device; (4) Output the verification results.

2. A method for setting and verifying a fixed value of a safety and stability control device according to claim 1, characterized in that: In step (1), the template includes: device sampling, component scheduling name, component primary and secondary equipment parameters, component category, component strategy function, component fault type, component related switch quantity, and component pressure plate configuration.

3. A method for setting and verifying a fixed value of a safety and stability control device according to claim 1, characterized in that: In step (2), the constants of different formats of different devices are imported and preprocessed and then normalized into a unified format; then the constants imported into the device setting are rearranged into a set list according to the component scheduling name and component category keywords; based on the setting calculation method of the relevant category components in Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", the reference constants of this device are calculated and generated, and the reference constant setting range including the maximum and minimum values ​​is simultaneously generated.

4. A method for setting and verifying a fixed value of a safety and stability control device according to claim 1, characterized in that: In step (3), the constant items are divided into numerical constants and control word constants, and the bit definition of the control word constants is set; then, after the constraint relationship between the constants is established based on normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", they are checked against the reference constants.

5. A method for setting and checking a fixed value of a safety and stability control device according to claim 1, characterized in that: In step (4), for the device constants that have not passed the verification, the constant items with setting errors and the causes of the errors are output; for the device constants that have passed the verification, the corresponding constant check codes are generated; and the verification results are output respectively using two different verification methods based on hash values ​​and CRC check values.

6. A setting value setting and verification system for a safety and stability control device, characterized in that: include: Function setting module: used to set and generate reference setting templates for devices; Set value preprocessing module: used to import and preprocess the initial set value; Set value verification module: used to verify the set value after preprocessing according to the device reference set value template; Output module: used to output verification results.

7. A constant value setting and verification system for a safety and stability control device according to claim 6, characterized in that: In the function setting module, the template includes: device sampling, component scheduling name, component primary and secondary equipment parameters, component category, component strategy function, component fault type, component related switch quantity, and component pressure plate configuration. Based on the setting calculation method of relevant categories of components in normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", the reference set value of this device is calculated and generated, and the reference set value setting range including maximum and minimum values ​​is generated simultaneously.

8. A constant value setting and verification system for a safety and stability control device according to claim 6, characterized in that: In the constant value preprocessing module, the constant values ​​of different formats of different devices are imported for preprocessing and normalized into a unified format; then the constant values ​​imported into the device are rearranged into the constant value list according to the component scheduling name and component category keywords.

9. A constant value setting and verification system for a safety and stability control device according to claim 6, characterized in that: In the constant value verification module, the constant value items are divided into numerical constants and control word constants, and the bit definition of the control word constants is set; then, after the constraint relationship between the constants is established based on normative documents such as Q / GDW12204-2022 "Technical Specifications for Strategy and Setting of Power Grid Security and Stability Control Systems", they are verified with the reference constants.

10. A constant value setting and verification system for a safety and stability control device according to claim 6, characterized in that: In the output module, for the device constants that fail the verification, the constant value items with setting errors and the causes of the errors are output; for the device constants that pass the verification, the corresponding constant value check codes are generated; and the verification results are output respectively using two different verification methods based on hash values ​​and CRC check values.

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