High-voltage ring main unit monitoring control system of cable and implementation method of monitoring control system

Abstract

The invention discloses a high-voltage ring main unit monitoring control system of a cable and an implementation method of the monitoring control system. A ring main unit comprises a primary chamber and a secondary chamber, wherein a power distribution line and a switch line in the primary chamber are respectively and additionally provided with a current transformer and a voltage transformer, thecurrent transformer and the voltage transformer are used for sending acquired monitoring data to a controller in the secondary chamber, a monitoring sensor in the primary chamber of the ring main unitis connected with the secondary chamber via a data line, a circuit breaker is arranged in the primary chamber, a data processing module in the controller is used for judging whether abnormal output is generated or not by comparing a numerical value of each phase and a set standard value of an output circuit, judging that the circuit is a fault circuit and marking and storing information of the fault circuit, the controller is used for sending an instruction to the circuit breaker on the fault circuit, the circuit breaker on the fault circuit is isolated, and other circuit breakers normally run. The ring main unit has the advantages that on-line monitoring and management display of data can be achieved by a CPU microcomputer device, a worker is timely to handle, relatively high reliabilityis achieved, and unified management is facilitated.

Description

Technical field [0001] The invention relates to the technical field of electrical equipment, and more specifically, to a cable high-voltage ring network cabinet monitoring and control system and an implementation method thereof. Background technique [0002] The Ring Main Unit is a group of electrical equipment for transmission and distribution (high-voltage switchgear) installed in a metal or non-metal insulated cabinet or made into an assembling interval ring network power supply unit. Its core part adopts load switches and The fuse has the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations of load centers in urban residential districts, high-rise buildings, large public buildings, factories and enterprises. [0003] At present, the feeder automation system scheme for the distribution network is mainly realized by reclosing, and there...

AI Technical Summary

Problems solved by technology

However, this system can only achieve simple fault isolation, and cannot implement targeted processing for different types of faults.

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