Constant value setting method for voltage comprehensive protection measurement and control device

Abstract

The invention discloses a constant value setting method for a voltage comprehensive protection measurement and control device. The constant value setting method comprises the following steps of: (1) anumerical value setting step: including an overvoltage constant value, a low voltage constant value and a zero sequence overvoltage constant value; (2) a time constant value step: including overvoltage time, low voltage time and zero sequence overvoltage time; and (3) a constant value switching step: including I bus overvoltage protection, I bus low-voltage protection, I bus zero-sequence overvoltage protection, II bus overvoltage protection, II bus low-voltage protection, II bus zero-sequence overvoltage protection, I bus PT disconnection alarm and II bus PT disconnection alarm. The constantvalue setting method for a voltage comprehensive protection measurement and control device is simple in step and accurate in measurement and control data, corresponding protection can be carried outaccording to various different circuit conditions, and the circuit safety is guaranteed; and the method is high in operation processing capability, and the working stability is greatly improved.

Description

technical field

[0001] The invention relates to a fixed value setting method of a comprehensive voltage protection measurement and control device, which belongs to the technical field of power equipment protection. Background technique

[0002] The development direction of power system comprehensive automation ceremony power grid, the comprehensive protection measurement and control device needs to complete the measurement, fault detection, protection, remote control and other functions at the same time, in order to realize timely and accurate line protection, measurement and control, the hardware design of the comprehensive protection measurement and control device However, with the development of the power system, higher and higher requirements are put forward for the speed, data processing ability and anti-interference ability of the protection device. It is difficult for the design method of the existing technology to simultaneously complete the protection and measurement...