Anti-misoperation method for automatic voltage control

Abstract

The invention discloses an anti-misoperation method for automatic voltage control, and the method comprises the following steps: S1, carrying out the reactive equipment classification of a command giving object through a keyword extraction method for an automatic voltage control command; and S2, carrying out association query on the station under the automatic voltage control command and the D5000 system of the point number in the first area of the production control large area, searching the command control point number under the corresponding station, reading the associated equipment information of the corresponding control point number under the station, and according to the difference of the reactive equipment classification condition in the step S1, through a topological connection point number tracing method, determining the reactive equipment classification condition according to the difference of the reactive equipment classification condition. Determining whether the type of the actual voltage automatic control equipment is the same as that of the command issuing equipment, if not, stopping the command, and if yes, continuing to perform the next step; and S3, carrying out secondary identification on the devices which are determined to be of the same type, determining whether the commanding device and the automatic control device belong to the same device through a keyword extraction method, if not, stopping the command, and if so, continuing the command.

Description

Technical Field

[0001] The present invention relates to the technical field of power system power supply and distribution, and particularly relates to an anti-misoperation method for automatic voltage control. Background Art

[0002] In power production operations, the emergence of automatic voltage control technology has a positive significance for improving the power grid voltage quality and reducing active power losses. By setting automatic control strategies, voltage regulation commands are issued, and the voltage regulation commands are converted into remote control commands. The intelligent dispatching control system, i.e., the D5000 system, is used to control reactive power regulation devices such as capacitors, reactors, and transformers to adjust the voltage. Before the AVC device is put into operation in a normal substation, a separate AVC remote control relationship table needs to be established, and the remote control function of AVC is triggered through this table. At the same time, it is necessary to check the remote control and remote adjustment point numbers of AVC to ensure the normal operation of the equipment. However, it is possible that due to the staff's insufficient understanding of the triggering mechanism or carelessness, the point numbers under AVC application cannot be guaranteed to be correct. Especially for some transformed substations, the remote signal, remote measurement, and remote control point numbers need to be frequently modified. When the modified remote control point number is an AVC device, due to human negligence or reliance on empirical methods, only the point numbers under FES of the D5000 system may be modified. If only the point numbers under the FES module of the AVC device are modified, AVC will issue commands to the original remote control point numbers of the AVC device during command issuance, resulting in miscontrol. Such human subjective errors or carelessness may cause casualties of on-site operators or major power accidents, resulting in large-scale power outages. Summary of the Invention

[0003] In view of the above technical problems, the present invention provides an anti-misoperation method for automatic voltage control.

[0004] To achieve the above object, the technical solution of the present invention is as follows: An anti-misoperation method for automatic voltage control includes the following steps: S1. For the AVC control command of automatic voltage control, the reactive power devices are classified for the order-giving object by the keyword extraction method. S2. The substation and point number of the automatic voltage control order are associated and queried in the D5000 system in the first zone of the production control area to find the order-giving control point number under the corresponding substation, and the associated device information of the control point number under the substation is read. According to the different classifications of reactive power devices in step S1, the topology connection point number tracing method is used to determine whether the type of the actual voltage automatic control device is the same as that of the order-giving device. If they are different, the command is stopped; if they are the same, the next step is continued. S3. Conduct a secondary identification on the devices that have been determined to be of the same type. Use the keyword extraction method to determine whether the commanded device and the automatic control device belong to the same device. If they do not belong to the same device, stop the command. If they are the same, continue to execute the AVC control command.

[0005] Among them, in the step S1, the keyword extraction method is to identify the device under command as a main transformer, capacitor or reactor by reading the keywords of reactive power devices in the local D5000 system database.

[0006] Among them, in the step S2, use the topological connection point number tracing method to determine the type of the actual voltage automatic control device. Locate the position of the remote control point number of the AVC device under command at a certain substation in the downstream remote control information table of the FES module in the D5000 database. Search for the data point name under the located entry in the data point names of the SCADA breaker table, and extract the start connection point number and the end connection point number under the corresponding search entry in the breaker table. Combine and analyze the start and end point numbers under the corresponding entry in the breaker table with the result of the reactive power device classification. If both the start and end connection point numbers are -1 and the reactive power device classification result is a transformer, it is determined as a main transformer device. If both the start and end connection point numbers are not -1, continue to search for one of them in the start and end connection point numbers in the SCADA disconnecting switch table, and search and match the other connection point number in the start and end connections of the capacitor table. If the reactive power device classification result is a capacitor or a reactor, it is determined that the actual control device is a capacitor or a reactor. If the device type cannot be determined, stop the command and wait for the relevant responsible person to complete the processing before continuing to the next step. If the device type has been determined, proceed to the next step.

[0007] Among them, in the step S3, conduct a name verification on the devices that have been identified, and determine whether the device in the control command is the same as the actual control device. Use the keyword extraction method to compare the data point name in the downstream remote control information table of the identified device with the voltage control command device. If they are the same, directly execute the remote control command. If they are different, stop and wait for the relevant responsible person to complete the processing before continuing the control.

[0008] The beneficial effects of the present invention are: 1. In view of the problem of accurate execution of remote control in substations with AVC function, the present invention invents a method that can timely identify that the device for AVC remote control is not the target device and issue a stop command when the remote control point number does not match correctly when the remote control command of the AVC device is issued. When the main station side modifies the point number or fills it in for the first time, since the remote control point number of the AVC device is different from that of general devices, working habits are likely to cause only the modification and verification on the FES side, forgetting to modify the point number in the AVC table. Through technical means, the present invention ensures that when the AVC remote control point number is filled in incorrectly, there will be no misoperation and reminds the main station personnel to re-check the point table of the AVC device, effectively avoiding the risk of accidents such as power outages caused by miscontrolling other devices by AVC.

[0009] 2. When on-site operators are working at a non-AVC device site, the present invention can effectively avoid the safety risks of personnel caused by miscontrolling AVC. When the AVC issues a control command and the device actually controlled is a device at other work sites, the system will detect that the device does not belong to the AVC device or the device actually controlled is different from the target device, and stop the command in time until the detection passes before the command can be executed, ensuring the safety of on-site operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the process flow diagram of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0012] As Figure 1 shown, an anti-misoperation method for automatic voltage control includes the following steps: S1. For the AVC control command of automatic voltage control, use the keyword extraction method to classify the reactive power devices for the ordered object; S2. Conduct an associated query on the D5000 system in the first zone of the production control zone for the substation and point number where the automatic voltage control command is issued, find the ordered control point number under the corresponding substation, read the associated device information of the corresponding control point number under the substation, and according to the different classifications of reactive power devices in step S1, use the topological connection point number tracing method to determine whether the type of the actual voltage automatic control device is the same as that of the ordered device. If they are different, stop the command; if they are the same, continue to the next step; S3. Conduct a secondary identification of the devices that have been determined to be of the same type. Use the keyword extraction method to determine whether the commanded device and the automatic control device belong to the same device. If they do not belong to the same device, stop the command. If they are the same, continue to execute the AVC control command.

[0013] Among them, in the step S1, the keyword extraction method is to identify the device being commanded as a main transformer, capacitor, or reactor by reading the keywords of reactive power devices in the local D5000 system database.

[0014] Among them, in the step S2, determine the type of the actual voltage automatic control device through the topological connection point number tracing method. Locate the position of the remote control point number of the AVC device in a certain substation in the downstream remote control information table of the FES module in the D5000 database. Search for the data point name under the located entry in the data point names of the SCADA breaker table, and extract the start connection point number and the end connection point number under the corresponding search entry in the breaker table. Combine and analyze the start and end point numbers under the corresponding entry in the breaker table with the result of the reactive power device classification. If both the start and end connection point numbers are -1 and the reactive power device classification result is a transformer, it is determined as a main transformer device. If both the start and end connection point numbers are not -1, continue to search for one of them in the start and end connection point numbers in the SCADA disconnecting switch table, search and match the other connection point number in the start and end connections of the capacitor table, and if the reactive power device classification result is a capacitor or a reactor, it is determined that the actual control device is a capacitor or a reactor. If the device type cannot be determined, stop the command and wait for the relevant responsible person to complete the processing before continuing to the next step. If the device type has been determined, proceed to the next step.

[0015] Among them, in the step S3, conduct a name verification on the devices that have been identified, and determine whether the device in the control command is the same as the actual control device. Through the keyword extraction method, compare the data point name in the downstream remote control information table of the identified device with the device in the voltage control command. If they are the same, directly execute the remote control command. If they are not the same, stop and wait for the relevant responsible person to complete the processing before continuing the control.

[0016] Term Explanation: D5000: Dispatching automation system; AVC: Automatic Voltage Control; FES: Front-end System; SCADA: An application module of D5000, full name is Data Acquisition and Monitoring System.

[0017] It should be understood that the above specific embodiments of the present invention are only used for illustrative explanation or interpretation of the principles of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A method for preventing misoperation of automatic voltage control, characterized in that: The following steps are involved: S1. For the AVC control command of automatic voltage control, the keyword extraction method is used to classify the reactive equipment of the command object; S2. Perform an association query on the plant station and point number of the automatic voltage control command in the D5000 system of the production control area 1, find the command control point number under the corresponding plant station, read the associated equipment information of the corresponding control point number under the plant station, and determine whether the type of the actual voltage automatic control equipment is the same as the command equipment through the topological connection point number tracing method according to the different classification of reactive equipment in step S1. If they are different, stop the command, and if they are the same, proceed to the next step; S3. Perform secondary identification on the devices that have been determined to be of the same type, and determine whether the commanding device and the automatic control device belong to the same device through keyword extraction method. If they do not belong to the same device, stop the command; if they are the same, continue to execute the AVC control command.

2. The method for preventing misoperation of automatic voltage control according to claim 1, characterized in that: In step S1, the keyword extraction method is to identify whether the commanded device belongs to the main transformer, capacitor or reactor by reading the keyword of the reactive device in the local D5000 system database.

3. The method for preventing misoperation of automatic voltage control according to claim 1, characterized in that: In the step S2, the type of the actual voltage automatic control device is determined by the topological connection point number tracing method, and the remote control point number of the AVC device under a certain plant station is used to locate the position of the remote control point number in the downlink remote control information table in the FES module of the D5000 database, and the data point name under the positioning item is searched in the data point name of the SCADA circuit breaker table, and the head-end connection point number and the terminal connection point number under the corresponding search item in the circuit breaker table are extracted, and the head-end terminal point number under the corresponding item of the circuit breaker table is combined with the result of reactive equipment classification for analysis and judgment. If the head-end connection point number is If the reactive device classification result is -1 and the transformer is identified as the main transformer, if the first and last connection point numbers are not -1, continue to search for one of the first and last connection point numbers in the SCADA switch table, search and match the other connection point number in the switch table with the first and last connection points in the capacitor table, and if the reactive device classification result is a capacitor or reactor, the actual control device is identified as a capacitor or reactor. If the device type cannot be identified, stop the command and wait for the relevant responsible personnel to complete the processing before proceeding to the next step. If the device type has been identified, proceed to the next step.

4. The method for preventing misoperation of automatic voltage control according to claim 1, characterized in that: In step S3, the name of the identified device is checked to determine whether the device in the control command is the same as the actual controlled device. The data point name of the downlink remote control information table of the identified device is compared with the voltage control command device through the keyword extraction method. If they are consistent, the remote control command is directly executed. If they are inconsistent, the remote control command is stopped and the control can only be continued after the relevant responsible personnel have completed the processing.

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