Distributed 10KV power distribution network measurement and control protection system and protection method

Abstract

The invention relates to a distributed 10KV power distribution network measurement and control protection system and protection method, and the system comprises a comprehensive measurement and controlcommunication unit and a plurality of independent measurement and control protection units, wherein the comprehensive measurement and control unit achieves the distributed regional protection measurement and control through the communication between a serial port or an Internet access and the measurement and control protection units. The comprehensive measurement and control communication unit realizes communication data management of a 10kV switch cabinet and information interaction with a distribution network master station. The measurement and control protection unit realizes the isolationof a fault area and recovery of a non-fault area, and can achieve the intelligent FA protection logic. The comprehensive measurement and control management function for the 10KV urban power distribution network is achieved, the defect that traditional DTU equipment is only used for measurement and control and is not protected is overcome, faults can be recognized and isolated in time when the faults occur, the fault range is prevented from being enlarged, the reliability of the power distribution network can be effectively improved, the operation and maintenance workload is reduced, and the system has important significance in power distribution network development.

Description

technical field [0001] The invention belongs to the technical field of distribution network automation management of electric power systems, and in particular relates to a distributed-based 10KV distribution network measurement, control and protection system and a measurement, control and protection method thereof, which can improve the reliability of the distribution network and reduce the workload of operation and maintenance. Background technique [0002] The domestic power grid has long been affected by the concept of "emphasis on power generation, light supply, and no use", and the development of automation in the distribution network has lagged behind. Although the construction of the distribution network has been strengthened in recent years, the focus is mainly on the distribution network. In terms of construction and automation, the monitoring and protection of the distribution network has not received enough attention. [0003] According to the action plan for dist...

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Problems solved by technology

[0004] The structure of domestic 10KV distribution network is complex, the automation level of distribution network equipment is uneven, and customers have diversified requirements for distribution automation functions. The distribution network automation products put into operation have simple functions and do not have perfect relay protection functions.

Existing distribution network automation products can no longer meet the development needs of distribution network automation

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