Distributed arc suppression coil controller device based on optical fiber communication

Abstract

The invention discloses a distributed arc suppression coil controller device based on optical fiber communication. The distributed arc suppression coil controller device consists of a plurality of controllers and an optical exchanger, wherein each controller controls a set of arc suppression coils; and the controllers control a plurality of sets of arc suppression coils. The controllers can be mounted in different main control rooms, are connected with the optical exchanger through optical fibers, and are in real-time communication with one another, thus forming a distributed control system. When an operation manner of the system changes, the controllers can be in coordination control to guarantee that the compensating current of the arc suppression coils is at an optimal value, and to avoid incorrect operation and frequent adjustment of the arc suppression coils simultaneously. The distributed arc suppression coil controller device provided by the invention can be effectively applied to the situation that the plurality of sets of automatic-turning arc suppression coils are arranged in a same power grid.

Description

technical field [0001] The invention belongs to electric power technology and equipment, is suitable for 3-35kV power distribution network, and can effectively solve the situation that there are multiple sets of automatic tuning arc suppression coils in the same power network. When the operation mode of the system changes, multiple controllers can coordinate the control to ensure that the compensation current of the arc suppression coil is at the optimal value, and at the same time avoid the misoperation and frequent adjustment of the arc suppression coil. Background technique [0002] With the continuous development of the distribution network, the number and length of overhead lines continue to increase, and the proportion of cables going out is getting higher and higher. These changes lead to a sharp increase in the capacitive current of the system to the ground. According to the relevant standards of the State Grid Corporation, when the capacitive current exceeds a certa...

AI Technical Summary

Problems solved by technology

At the same time, when the operation mode of the distribution network changes, it often occurs that multiple self-tuning arc suppression coils operate in parallel, which brings about the problem of coordinated control of the self-tuning arc suppression coils.

In actual operation, this problem has not been well solved. The arc suppression coils running in parallel are often adjusted frequently, and even the long-term fluctuation of the neutral point voltage affects the reliability of power supply.

The difficulty of coordinated control of automatic tuning arc suppression coils lies in the mutual communication between devices and the control strategy

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