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Fault monitoring system, method and related device based on load change

A technology of fault monitoring and load change, applied in the direction of the fault location, etc., can solve problems such as power damage, station AC system power failure, protection malfunction, etc., and achieve the effects of preventing fire, ensuring safe production, and preventing line grounding

Pending Publication Date: 2021-11-19
广西电网有限责任公司桂林供电局
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  • Application Information

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Problems solved by technology

[0004] In the existing technology, there is no special leakage protection designed for the station AC system. Therefore, when an insulation fault occurs in the station AC system, it cannot be detected in time, which will easily cause power damage, and even cause the station AC system to lose power. As a result of protection misoperation accidents, based on the above technical problems, the following technical solutions are proposed:

Method used

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  • Fault monitoring system, method and related device based on load change
  • Fault monitoring system, method and related device based on load change
  • Fault monitoring system, method and related device based on load change

Examples

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Embodiment 1

[0031] Fault monitoring systems based on load changes, such as figure 1 As shown, it includes a control module 1, a current measurement module 2 and a current sensor 3, the current measurement module 2 collects the current signal of the current sensor 3, and the current measurement module 2 transmits the current signal to the control module 1. The control module 1 collects voltage signals, and analyzes feeder insulation faults according to the current signals and voltage signals.

[0032] In a preferred embodiment of the present application, the fault monitoring system is used in an AC system for a substation. The AC system for a substation is an essential link to ensure the safe and reliable transmission of electric energy in a substation. The AC system used in substations provides power for the forced oil circulation cooling system of large transformers. It can also be used as AC operating power and AC power for DC systems to heat equipment, drive tides, and illuminate.

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Abstract

The invention discloses a fault monitoring system, method and related device based on load change. The fault monitoring system comprises a control module, a current measuring module and a current sensor, and is characterized in that the current measuring module acquires a current signal of the current sensor and transmits the current signal to the control module, and the control module acquires a voltage signal and analyzes feeder insulation faults according to the current signal and the voltage signal. The line insulation state is analyzed by monitoring the load change of an alternating current system, fire disasters caused by overlarge line current and long-time operation due to line grounding and inter-phase short circuit faults are prevented, and electric power safety production is guaranteed.

Description

technical field [0001] The invention relates to the field of monitoring and fault diagnosis, in particular to a load change-based fault monitoring system, method and related devices. Background technique [0002] The station AC system provides power for the primary and secondary equipment in the substation, which is an essential link to ensure the safe and reliable transportation of electric energy in the substation. Its main functions are: it is used in the forced oil circulation cooling system of large transformers, as Power supply for operation, AC power supply for DC system, AC power supply for heating, tide driving, lighting, etc. for equipment, AC power supply for UPS, SF6 gas monitoring device, exhaust fan power supply for normal and accidents, and living power supply for lighting, etc. [0003] However, in the existing technology, there is no leakage protection design for the station AC system, which leads to the failure to detect the insulation fault of the station ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/08
Inventor 徐超吴江雄阳国燕龙登其方柳周雄陈斌李河胡贺梅徐玉凤吴文健
Owner 广西电网有限责任公司桂林供电局
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