电力系统节点输电网损成本分析  

Node Network Loss Cost Analysis Method in Transmission System

作　　者：王小君[1] 鲍海[1] 

机构地区：[1]华北电力大学电气工程学院,北京市昌平区102206

出　　处：《中国电机工程学报》2008年第13期120-124,共5页Proceedings of the CSEE

摘　　要：电力市场环境下,输电网的节点成本由发电厂上网电价与输电成本决定,这两者对节点成本的影响与潮流分布密切相关。因此,确定电网各负荷节点的电力成本是一个十分复杂的问题,而在输电成本中由于电源间的耦合关系,又以网损成本计算最为复杂。该文从功率分解和功率分量的归属问题出发,分析了电网功率的分布情况;以节点费用流守恒为原则,在研究电网线损物理分布机理的基础上,提出了一种基于电网功率物理分布的输电网损成本的分析方法。该方法可以直接得出负荷节点电力成本与购电节点购电成本的解析表达式,为解决电源间的耦合问题提供了新途径。最后,通过IEEE9节点算例,验证了该方法对电力市场条件下的节点网损成本分析具有实际应用意义。In electricity market the node cost of transmission system is related to the on-grid price and the transmission cost. And the influence of the two factors on node cost is associated with the distribution of the power flow. How to confirm the node cost is a complicated problem because of the coupling relation between the sources. This paper proposes a method to analyze the net loss costs of transmission based on power flow physical distribution analysis and cost flow conservation principle. By tracing the cost flow of each power component, a direct relationship between generation on-grid price and load node cost involving power loss is clearly showed. At last, the computational result on power system of 1EEE 3 generators and 9 nodes proves that the method presented in this paper is available in the practical applications.

关 键 词：电力市场:输电费用 节点费用守恒 功率分量 

分 类 号：TM77[电气工程—电力系统及自动化]