System and method for detecting high voltage transmission line faults

Abstract

The invention relates to a system and a method for detecting high voltage transmission line faults. The system is provided with a fault analysis server and a detection device arranged on a three-phase high voltage transmission line, wherein the detection device consists of a first detection point device and two second detection point devices, the first detection point device is arranged on a B phase line, the second detection point devices are respectively arranged on an A phase line and a C phase line and transmit the detected data to the first detection point device, and the first detection point device transmits all of the detected data and the data transmitted by the second detection point devices to the fault analysis server. The method comprises the following steps of: arranging N detection points on one line, installing the detection device and synchronizing the time of each monitoring point; receiving monitored data of current, field intensity and temperature at any time transmitted by each detection device by the fault analysis server and carrying out statistic analysis. The invention can confirm the fault point of the high voltage transmission line in time, greatly improves the labor efficiency, and shortens the fault-checking time.

Description

technical field [0001] The invention belongs to a high-voltage transmission line fault detection device, in particular to a high-voltage transmission line fault detection system and a detection method capable of solving faults such as short circuit and open circuit of a 10KV high-voltage power transmission line. Background technique [0002] At present, my country uses 10kv lines as the last step of high-voltage power transmission. This kind of reference is very common. 10kv lines are used as civil voltage 220v and 380v upper-level power transmission lines. The line routing is relatively complicated, the geographical environment is relatively harsh, and there are tree damages. , Bird damage, wind damage, etc. affect the safe operation of the line. At the same time, because the 10kv line is the end of the main high-voltage line, its erection method and working environment have caused congenital accidents and sudden characteristics. The above characteristics have caused the 10kv...

AI Technical Summary

Problems solved by technology

[0005] When a fault occurs, the line follower needs to check all the indicators, which cannot be resolved quickly. Sometimes, if the line is too long, it will take a lot of time to check all the indicators. Due to the complexity of the power grid, if the downstream users are large The start-up of electrical equipment will also cause misoperation of the indicator at the moment of start-up; and because it adopts the ironless method, the induction sensitivity is low; the main judgment basis of this equipment is the current change within the specified time length, and The internal time circuit will produce timing errors after working for a long time, resulting in fault analysis errors. After the actual application of the power system, there are certain problems in the accuracy and stability of this equipment, and its practicability is not reliable.

[0006] To sum up, the traditional line fault detection device has the disadvantages of poor real-time performance, high false alarm rate, single judgment method, inconvenient disassembly, false judgment caused by purely manual judgment, human-confirmed wrong fault, and inability to integrate with the communication network. These problems lead to the poor reliability of the fault discrimination information provided by this device, and even lose the meaning of fault status in many application environments in thunderstorm areas and complex forest areas

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