火电厂厂级负荷优化分配系统研制

摘要

A solution of plant-level optimal LDS(Load Dispatch System) is proposed for power plants. The hardwire wiring in traditional LDS is replaced by OPC server and IEC60870-5-104 communication,which simplifies its system hardware structure. The load bias adjustment and manual functions are added to its software,which enhances the dispatch mode diversity. Its multi-objective optimization algorithm based on dynamic programming considers both the load response and plant economy to effectively meet both the requirement of dispatch center for quickness and the requirement of plant for optimal total coal consumption.The applications in 7 power plants validate its effectiveness in economic load dispatch,as well as its flexibility,reliability and stability in operation.%提出一种新颖的火电厂厂级负荷优化分配系统的设计与解决方案.采用OPC服务器与IEC608705-104远动通信方式替换了传统负荷分配系统方案中的硬接线,简化了系统硬件结构.同时软件上增加了机组负荷指令偏置调整和手动功能,分配方式更加多样.通过分析基于动态规划的多目标负荷优化分配算法,同时要求兼顾负荷响应快速性和电厂经济性指标,使其在满足调度中心时间要求与电厂总煤耗最省方面均具有有效性.通过云南省7家火电厂的实际运行,证明了所提出的负荷优化分配系统经济性负荷分配效果好,系统操作方式灵活、稳定可靠.