考虑配电网静态电压稳定性的用户自备分散电源准入功率计算  

Calculation of Maximum Penetration Level of Self-Supply Distributed Generators Considering Steady Voltage Stability of Distribution Network

作　　者：雷金勇[1] 甘德强[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027

出　　处：《电网技术》2010年第3期162-168,共7页Power System Technology

摘　　要：分散电源(distributed generator,DG)并网将会对配电系统产生诸多影响。定量分析了异步型DG并网对配电网静态电压稳定性的影响,提出了考虑静态电压稳定裕度变化量(change of steady-state voltage stabilitymargin,CSVSM)约束的用户自备分散电源准入功率计算模型。分析了异步型DG不同无功补偿容量对其准入功率的影响。杭州局某配电网的实例仿真计算结果验证了所提模型的有效性及合理性。该模型对分布式发电发展初期用户自备异步型DG的规划、运行和调度等都具有重要的指导意义。The interconnection of distributed generator （DG） with power network will exert many influences on distribution system, especially the steady state voltage stability （SSVS） of distribution system will be affected. In this paper, the influence on SSVS of distribution network due to interconnection of induction DG with the latter is quantitatively analyzed, and a model to calculate maximum penetration level of single self-supply DG and the min-max penetration level of multiple self-supply DGs, in which the restraint of change of steady-state voltage stability margin （CSVSM） is taken into account, is proposed. The influences of induction DG with different reactive power compensation capacity on its penetration level are researched. Taking a certain distribution network of Hangzhou Power Grid Company for calculation example, the reasonableness and effectiveness of the proposed model are validated by the simulation results. The proposed model is available for the planning, operation and dispatching of self-supply induction DGs during the early stage of development of DGs.

关 键 词：分散电源 异步发电机 静态电压稳定 静态电压 稳定极限 负荷裕度 双层优化 准入功率 

分 类 号：TM73[电气工程—电力系统及自动化]