节能调度对大受端电网频率和线损影响的分析  

Impact analysis of energy-saving dispatching on the frequency and line losses of large receiving-end grid

作　　者：李红梅[1] 严正[1] 林一 牛凯 

机构地区：[1]上海交通大学电气工程系,上海200240 [2]上海电力公司技术与发展中心,上海200025

出　　处：《电力系统保护与控制》2010年第20期211-216,共6页Power System Protection and Control

基　　金：上海市电力公司科技项目支持

摘　　要：以上海电力系统特有的火电、大受端电网情况为例,分析了实施日前节能调度、按照节能减排优先顺序进行机组组合优化对系统网架结构、潮流分布,及系统安全运行是否会带来负面影响。通过对电网实行节能调度存在的实际问题入手,运用BPA等工具进行仿真分析可知:以火力发电为主地区,如果按照《节能发电调度办法(试行)》对机组按照减排优先顺序进行排序,虽然能够减少煤炭能源消耗和污染物排放,但也会造成系统线损增加及频率波动,对系统的经济性和稳定性都有一定的影响。Taking special case of thermal-power and large receiving-end of Shanghai power utility as examples,the negative impact on system configuration,load flow and safety operation is analyzed from current energy-saving dispatching and generation units optimal combination implemented by the priority level of energy-saving and emission reduction.Based on the analysis of some questions existing in energy-saving dispatching of power system,BPA software is applied to do simulation,and results show that in the region where power is supplied by mostly thermal power,if all generation units are sequenced according to the priority level complying with the code of Energy Conservation,Power Generation and Distribution,although coal consumption and pollutant emission can be reduced,the increasing of line loss and frequency fluctuation cannot be avoided,so that,economical efficiency and stability of power system will be disturbed to some degree.

关 键 词：节能调度 线损 频率 大受端电网 机组组合 

分 类 号：TM73[电气工程—电力系统及自动化]