Parallel operation and load switching control method of 10kV generator set

Abstract

The invention aims to overcome the defects in the prior art, and provides a parallel operation and load switching control method of a 10kV generator set. According to the method, automation and intelligentization of parallel operation and load switching control are achieved through reasonable and accurate setting of a logical relationship, and accordingly a parallel operation system of the generator set accords with security characteristics of a communication network. Parallel operation and load switching management is achieved through a PLC, and the method mainly comprises control of the parallel operation system and control of load switching. In application of set parallel operation and the load switching management, the PLC achieves related functions ultimately by means of control over various breakers through collection of analog quantity and the switching value via logic setting of a user.

Description

technical field [0001] The invention relates to a parallel control method for 10kV generating sets, in particular to a paralleling and load switching control method for 10kV generating sets of a communication distribution network. Background technique [0002] In the communication industry, the diesel generator set is used as a backup power supply. When the mains power fails, the generator set starts within a certain period of time to provide power. At present, a diesel generator set with a voltage level of 400V is generally used. The set has a self-starting function and automatically switches with the mains (transformer back end). In recent years, with the increase in the scale of communication equipment rooms and the increase in power consumption of equipment, 10KV voltage level diesel generator sets have become more and more widely used. 10KV generator sets also have self-starting functions, but they need to be paralleled first and then connected to the mains ( transform...

AI Technical Summary

Problems solved by technology

[0004] 1. The paralleling process is an overall action, that is, all the configured generator sets need to be successfully paralleled before they can be used as power output. The overall paralleling time is long and the operation safety of the back-end load is reduced.

[0005] 2. The simple parallel system does not have automatic load switching control after the parallel machine is completed

[0006] 3. When one or more generator sets in the parallel system fail, the parallel system cannot automatically remove non-important loads. When the remaining unit capacity cannot meet the load capacity, that is, when the parallel system is overloaded, the entire parallel system will disintegrate, and the downstream load will be powered off

[0007] 4. The parallel system cannot automatically judge and stop the operation of some redundant units according to the actual capacity of the subsequent load, resulting in a low system load rate and a waste of energy

Images