摘要
给出了一种配电网可观测性分析的定义,即使用典型负荷模式描述负荷变化规律,且每个负荷用户被赋予不同的表征指标,在变化的网络结构下,支路上优先配置最小数目的功率量测表计,利用量测方程求解典型负荷模式,从而获得各节点负荷,配电网可观测;有效的网络分割方法分割期望网络结构的加权树来优化表计配置,使得在量测方程可解的前提下,量测区域用户的指标均衡。算例进行了可观测分析和表计配置的测试。所提出的可观测分析思路能够折衷考虑经济性和运行需要,而表计配置也为配电网自动化改造提供一个思路。
The definition of observability of distribution system is proposed. The load variety rule is represented using typical load patterns and each consumer is given a different characteristic index, the network configuration is various as well, based on which, the minimum set of meters with power type can be placed with priority on branches. In addition, solving the measurement equations can obtain the typical load patterns and the node load further more. And the network observability is implemented at the same time. Secondly, an efficient graph partitioning method is proposed to partition the weighted tree of the expected distribution network into a desired number of measurement areas in the performing optimization meter placement. Finally, in conditions of making the measurement equations have solution, the measurement areas with balanced consumer index are obtained. The proposed method has been tested in examples. It makes a compromise with the cost and the operation demand, it also offers an idea in the reconstruction of distribution automation.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第12期35-41,共7页
Proceedings of the CSEE
