Self-adaptive bypass protection system and method for power distribution network line

Abstract

The invention belongs to the technical field of power system protection, and particularly relates to a self-adaptive bypass protection system and method for a power distribution network line, and the system comprises a data collection module, a data processing module, a parameter adjustment module and a bypass protection module which work cooperatively. Real-time monitoring, data processing, parameter adjustment and bypass protection of a power distribution network line are achieved, the system monitors operation parameters of the line in real time through a sensor, a data acquisition module transmits data to a data processing module, key information is extracted through preprocessing and analysis, and feature values are generated; the parameter adjusting module carries out comparison and verification according to the characteristic value and a preset protection threshold value, a self-adaptive algorithm is adopted to adjust bypass protection parameters so as to adapt to line protection requirements in different operation states, rapid and accurate fault isolation and power supply recovery are achieved, and the system improves the bypass protection accuracy and response speed and reduces the power consumption. And a powerful guarantee is provided for stable operation of a power system.

Description

Technical Field

[0001] The present invention belongs to the technical field of power system protection, and in particular relates to a distribution network line adaptive bypass protection system and method. Background Art

[0002] With the continuous development of power systems, the scale and complexity of distribution networks are also increasing. In distribution networks, once a line fails, the fault needs to be quickly and accurately removed to reduce the impact on the entire system. Traditional protection methods are usually based on fixed protection thresholds, which are difficult to adapt to the differences between different lines and equipment in the distribution network and are prone to misjudgment or missed judgment. Therefore, an adaptive bypass protection system and method is needed to solve this problem. Summary of the invention

[0003] The purpose of the present invention is to provide a distribution network line adaptive bypass protection system and method for solving the problems mentioned in the background technology.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A distribution network line adaptive bypass protection system comprises a protection system body, wherein the protection system body further comprises a data acquisition module, a data processing module, a verification module, a parameter adjustment module and a bypass protection module.

[0006] The data acquisition module includes current sensors, voltage sensors, power sensors and other sensors.

[0007] A method for adaptive bypass protection of distribution network lines, wherein current sensors, voltage sensors, power sensors and other sensors transmit the collected data to a verification module.

[0008] The verification module includes a second acquisition module which is the same as the data acquisition module, and the second acquisition module generates data 2 from the acquired data.

[0009] The verification module compares data 1 with data 2, verifies data 1, and generates a data average.

[0010] The data processing module preprocesses the average value of the data collected by the collection module, extracts key information and generates characteristic values.

[0011] The parameter adjustment module compares the characteristic value with a protection threshold preset in the parameter adjustment module, and uses an adaptive algorithm to adjust the bypass protection parameters.

[0012] The bypass protection module performs a bypass protection operation according to the adjusted parameters.

[0013] The bypass protection operation includes the steps of real-time monitoring of line operation status, analyzing and collecting data, adjusting protection parameters and executing bypass protection operation.

[0014] The present invention provides a distribution network line adaptive bypass protection system and method, the system includes a data acquisition module, a data processing module, a parameter adjustment module and a bypass protection module, each module works together to realize real-time monitoring, data processing, parameter adjustment and bypass protection of the distribution network line. The system monitors the current, voltage, power and other operating parameters of the line in real time through sensors, and the data acquisition module transmits the data to the data processing module, and extracts key information and generates characteristic values ​​after preprocessing and analysis. The verification module verifies the data acquisition module to avoid inaccurate detection results caused by sensor failures and the like, and to avoid misjudgment, and to make the detection results more accurate. The parameter adjustment module compares the characteristic values ​​with the preset protection thresholds, and uses an adaptive algorithm to adjust the parameters of the bypass protection to meet the line protection requirements under different operating conditions. The bypass protection module performs bypass protection operations according to the adjusted parameters to achieve fast and accurate fault isolation and power supply restoration. The system improves the accuracy and response speed of bypass protection, reduces the risk of power outages and operation and maintenance costs caused by faults, and provides a strong guarantee for the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0016] Figure 1 It is a structural flow chart of the present invention. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, a distribution network line adaptive bypass protection system includes a protection system body, and the protection system body also includes a data acquisition module, a data processing module, a verification module, a parameter adjustment module and a bypass protection module.

[0019] In practical applications, the data acquisition module is set at appropriate locations of the distribution network line, such as transformers, switch stations, etc. The data acquisition module monitors the current, voltage, power and other operating parameters of the line in real time through sensors, and transmits the data to the data processing module. The data processing module preprocesses and analyzes the collected data, extracts key information and generates characteristic values. The characteristic values ​​may include parameters such as current waveform, voltage waveform, power factor, etc.

[0020] The parameter adjustment module compares the characteristic value with the preset protection threshold and uses an adaptive algorithm to adjust the bypass protection parameters. The adaptive algorithm can automatically adjust the protection threshold and related parameters according to the actual operating status to adapt to the line protection requirements under different operating conditions. For example, when the line current exceeds the preset protection threshold, the adaptive algorithm can adjust the protection threshold and related parameters according to historical data and current status to improve the accuracy and response speed of bypass protection.

[0021] The bypass protection module performs bypass protection operations according to the adjusted parameters. The specific operation can select appropriate bypass protection strategies according to the actual situation, such as current quick disconnection, voltage quick disconnection, etc. When performing bypass protection operations, the bypass protection module can be linked with circuit breakers and other equipment to achieve fast and accurate fault isolation and power supply restoration.

[0022] A method for adaptive bypass protection of distribution network lines, wherein current sensors, voltage sensors, power sensors and other sensors transmit the collected data to a verification module.

[0023] The current, voltage, power and other operating parameters of the distribution network are monitored in real time through current sensors, voltage sensors and power sensors, and the data is transmitted to the verification module. The data acquisition module uses high-precision sensors, which can accurately monitor the operating status of the line in real time. The sensor has high sensitivity and anti-interference ability, which can effectively filter out noise and abnormal signals, and improve the accuracy and reliability of the data. In addition, the data acquisition module also has data storage and transmission functions, which can transmit the monitoring data to the data processing module in real time, and trace and analyze the data when necessary.

[0024] The verification module includes a second acquisition module which is the same as the data acquisition module, and the second acquisition module generates data 2 from the acquired data.

[0025] The verification module compares data 1 with data 2, verifies data 1, avoids inaccurate detection results caused by sensor failure, etc., and makes the detection results more accurate.

[0026] The data processing module preprocesses the average value of the data collected by the acquisition module, extracts key information and generates characteristic values. The data processing module uses a high-performance processor and algorithm, which can quickly process a large amount of data and accurately extract key information. Preprocessing operations include filtering, denoising and other operations, which can effectively remove noise and abnormal signals and improve the accuracy and reliability of data. Analysis operations include statistics, analysis and mining of data, which can extract key information and characteristic values, and provide a basis for subsequent parameter adjustments.

[0027] The parameter adjustment module compares the characteristic value with the preset protection threshold and uses an adaptive algorithm to adjust the parameters of the bypass protection. The parameter adjustment module automatically adjusts the protection threshold and related parameters according to the actual operating status to adapt to the line protection requirements under different operating conditions. The adaptive algorithm can dynamically adjust the protection threshold and related parameters according to the changing trend of the characteristic value and the actual operating status to achieve the optimal bypass protection effect. Specifically, when the line current exceeds the preset protection threshold, the adaptive algorithm can adjust the protection threshold and related parameters according to historical data and current status to improve the accuracy and response speed of the bypass protection. In addition, the parameter adjustment module also has an alarm function for the protection threshold. When abnormal data or operating status is detected, an alarm message can be issued in time to remind the operation and maintenance personnel to take corresponding measures.

[0028] The bypass protection module performs bypass protection operations according to the adjusted parameters. The bypass protection module adopts an intelligent control strategy, which can quickly and accurately perform bypass protection operations according to the adjusted parameters. The specific operation can select the appropriate bypass protection strategy according to the actual situation, such as current quick break, voltage quick break, etc. When performing bypass protection operations, the bypass protection module can be linked with circuit breakers and other equipment to achieve fast and accurate fault isolation and power restoration. In addition, the bypass protection module also has adaptive learning capabilities, which can continuously optimize the protection strategy based on historical operation data and actual operating status, and improve the accuracy and response speed of bypass protection.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A distribution network line adaptive bypass protection system, comprising a protection system body, characterized in that: The protection system body also includes a data acquisition module, a data processing module, a verification module, a parameter adjustment module and a bypass protection module.

2. The adaptive bypass protection system for distribution network lines according to claim 1 is characterized in that: The data acquisition module includes current sensors, voltage sensors, power sensors and other sensors.

3. A distribution network line adaptive bypass protection method according to claim 2, characterized in that: The current sensor, voltage sensor, power sensor and other sensors transmit the collected data to the verification module.

4. A distribution network line adaptive bypass protection system and method according to claim 3, characterized in that: The verification module includes a second acquisition module which is the same as the data acquisition module, and the second acquisition module generates data 2 from the acquired data.

5. A distribution network line adaptive bypass protection system and method according to claim 3, characterized in that: The verification module compares data 1 with data 2, verifies data 1, and generates a data average.

6. A distribution network line adaptive bypass protection system and method according to claim 5, characterized in that: The data processing module preprocesses the average value of the data collected by the collection module, extracts key information and generates characteristic values.

7. A distribution network line adaptive bypass protection system and method according to claim 5, characterized in that: The parameter adjustment module compares the characteristic value with a protection threshold preset in the parameter adjustment module, and uses an adaptive algorithm to adjust the bypass protection parameters.

8. A distribution network line adaptive bypass protection system and method according to claim 7, characterized in that: The bypass protection module performs a bypass protection operation according to the adjusted parameters.

9. A distribution network line adaptive bypass protection and method according to claim 8, characterized in that: The bypass protection operation includes the steps of real-time monitoring of line operation status, analyzing and collecting data, adjusting protection parameters and executing bypass protection operation.

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