Intelligent monitoring system for power distribution room

Abstract

The invention discloses an intelligent monitoring system for a power distribution room. The measurement and control functions of the low-voltage side and low-voltage outgoing line of a distribution transformer can be realized by using an intelligent controller and a concentrator; detection of phase loss, zero break, overload, electric leakage can be realized; and the releasing of an ordinary molded case circuit breaker can be controlled, so that protection can be performed on personal security and user equipment, and user faults can be prevented from enlarging to affect medium voltage power grids. A controller is connected to the concentrator through zigbee in a wireless manner, and data can be transmitted to a user mobile phone APP through a GPRS after collected by the concentrator, so that the real-time monitoring of the operation states of low-voltage outgoing line switches can be realized; and through the adoption a plurality of technological means such as self-describing protocols, wireless transmission, multi-device cascade, CT open circuit overvoltage protection, clip electricity taking, integral fixation of the controller and CT, on-site installation without power failure,the reduction of line paving due to wireless interconnection, and unified protocols for easy debugging can be realized, so that construction efficiency can be greatly enhanced.

Description

technical field [0001] The invention relates to the field of power distribution room monitoring, and more specifically, to an intelligent monitoring system for a power distribution room. Background technique [0002] With the continuous improvement of the automation coverage of the power system, the intelligent monitoring equipment configuration of the medium-voltage switchgear is relatively complete. The line inspection department can monitor the operation status of the medium-voltage power grid in real time through the automation system, and automatically isolate faults, which improves power supply reliability. However, the low-voltage outgoing lines are generally not equipped with intelligent controllers with communication functions. The transportation inspection department knows nothing about the operation of the user lines and cannot obtain the power consumption of the user lines in time. The company receives many complaints. [0003] A large number of ordinary molded...

AI Technical Summary

Problems solved by technology

However, the low-voltage outgoing lines are generally not equipped with intelligent controllers with communication functions. The transportation inspection department knows nothing about the operation of the user lines and cannot obtain the power consumption of the user lines in time. The company receives many complaints

[0003] A large number of ordinary molded case circuit breakers using bimetallic sheets as the protection principle in the low-voltage distribution network cannot guarantee timely and reliable breaking in the event of phase loss, zero disconnection, and overload, resulting in damage to user equipment, causing power outages and economic losses for users; at present, public assets Leakage switches are generally not installed in low-voltage distribution networks. Casualties caused by leakage of low-voltage line equipment occur at home and abroad. In actual operation, leakage defects may exist in large numbers due to lack of effective detection methods, threatening the safety of people's lives and property; users Failure to go out is one of the main reasons for the failure of medium-voltage lines in the distribution network. It is an urgent need for distribution network management to isolate user failures without replacing the original switchgear

[0004] The distribution network of the power system has a large number of user-oriented power distribution rooms, many equipment points and a wide range of equipment, and many line equipment are in a state of under-maintenance. Potential safety hazards and defects cannot be discovered in time. Manual inspections consume a lot of human resources, and there is an urgent need for "low-cost, grounded , reproducible and scalable” solution

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