吉林电网一次调频分析

针对东北调度通信中心对东北电网三省区间联络线功率交换控制性能考核由A标准过度到控制性能标准(CPS),以东北电网2次全网一次调频试验为基础,对吉林电网机组一次调频情况进行了分析,指出了目前机组在一次调频测试、大修、煤质、频率差及投入方式等方面存在的问题,提出了进一步提高调频投入率;建设基于EMS的一次调频监视考核系统;实现对并网发电厂一、二次调频工作的考核和补偿等建议。

Analysis of Primary Frequency Regulation in Jilin Power Grid

According to the calculation methods for the configuration of existing regular bus grounding electrode,the calculation method of distance between bus grounding electrodes according to the bus electromagnetic induction voltage distribution is introduced.For example in a 500kV substation in Changchun,the distance between grounding electrode and the end of bus and the distance between ground electrodes have been calculated,which are based on 2 kind of current curves with the consideration of potential electromagnetic voltage,end effect and mutual induction between parallel conducts.The results show that in this substation,the allowable distance between two bus ground electrodes is 172.33m.Two group of grounding switches are required for each grounding electrode.