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Fault detection method, low-voltage energy storage pre-operation group device and system, and controller

A low-voltage energy storage and fault detection technology, which is applied in the direction of measuring devices, fault locations, and information technology support systems, can solve the problems of unremovable circuit breakers, low reliability of detection methods, and failure of grounding switches to achieve fault detection. The status detection is accurate and reliable, and the effect of improving the reliability of practical operation

Active Publication Date: 2020-05-08
YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD +1
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Problems solved by technology

But in fact, due to factors such as personnel maintenance technology and equipment defects, there are factors such as the failure of the grounding switch to open, fault defects still exist, and insufficient preparation of the circuit breaker body, so that when the circuit breaker is closed, it is equivalent to directly closing the fault, which is harmful to the system. If the circuit breaker cannot be removed for a short time due to the defect of the circuit breaker body, it will have a great impact on the life of the equipment and the stability of the system; if the personnel are still in the maintenance state and misoperation occurs, it may cause casualties event
[0003] Therefore, it is necessary to accurately detect fault conditions such as grounding switch status or line faults, and the current detection methods have at least some disadvantages such as low reliability, complex logic coordination, and difficulty in realizing at the system terminal.

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  • Fault detection method, low-voltage energy storage pre-operation group device and system, and controller
  • Fault detection method, low-voltage energy storage pre-operation group device and system, and controller
  • Fault detection method, low-voltage energy storage pre-operation group device and system, and controller

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[0065] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0066] The section of the power system from the step-down distribution substation (high voltage distribution substation) to the user end is called the power distribution system. The power distribution system is a power network system composed of a variety of power distribution equipment (or components) and power distribution facilities that transforms voltage and directly distributes power to end users. The high-voltage power distribution system 200 is one of the power distribution systems, which supplies each load L through the high-voltage power distribution line LOAD For power supply, the high-...

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Abstract

The invention relates to the technical field of fault detection, in particular to a fault detection method based on a low-voltage energy storage pre-operation group device, a low-voltage energy storage pre-operation group device and system, and a controller. The fault detection method based on the low-voltage energy storage pre-operation group device comprises the steps that: high-voltage loop currents collected by a high-voltage current transformer and low-voltage currents provided by a low-voltage energy storage pre-operation group device are acquired, and then the fault condition of a high-voltage power distribution system is determined according to the low-voltage currents and the high-voltage loop currents. Therefore, before the high-voltage power distribution system is operated, thelow-voltage energy storage pre-operation group device performs fault detection on the high-voltage power distribution system, so that the fault state detection is accurate and reliable, and the practical operation reliability of the high-voltage power distribution system is further improved.

Description

technical field [0001] The invention relates to the technical field of fault detection, in particular to a fault detection method, a low-voltage energy storage pre-operation group device, a controller and a system. Background technique [0002] Distribution automation terminal equipment has been widely used in the distribution network. It not only efficiently realizes remote control, telemetry and remote signaling functions, but also plays an important role in system protection and detection, ensuring the stability of my country's power distribution network automation operation. . The main working mode of the distribution terminal is to connect to the distribution network automation system. After the system is inspected or eliminated, it receives the control command of the distribution automation system based on communication, and realizes the closing and opening of the circuit breaker when the state of the circuit breaker is correct. gate operation. But in fact, due to fac...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08H02H7/26
CPCG01R31/086G01R31/088H02H7/263H02H7/262Y04S10/52
Inventor 谭超李振兴张晓成邹彦冯艺孙雷王玲
Owner YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD
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