摘要
概述了分布式发电系统的特性,从含分布式电源(distributed generation,DG)的电力系统建设时期、运行时期及发生故障时3个方面,讨论了DG接入到电力系统而带来的一些问题及相关课题,包括:当DG在规划方案中的比重增加时,系统的复杂度成倍增加,DG的接入还会对配电系统的结构、负荷预测、变电站的选址等产生影响;电力系统运行时,DG对电力系统原有的电网频率、电力潮流及电压振荡、高次谐波等产生影响;含DG电力系统发生故障时的特征主要表现在孤岛效应及系统可靠性、短路容量上。文中对上述课题的国内外发展现状及发展方向进行了详细阐述。
The characteristics of distributed generation （DG） system are presented in brief. In three aspects, i.e., the construction period and operation period of power grid containing DG and under the situation that accidents occur in the power grid containing DG, some problems caused by connecting DG to power grid and related research issues are discussed. The problems and issues are as following： when the proportion of DG in the planning scheme increases, the complexity of power grid evidently raises, and connecting DG to power grid brings the influences in the structure of distribution system, load forecasting, site selection of substations and so on; during the operation of the power grid, DG influences on intrinsic frequency, power flow, voltage oscillation and high-order harmonics of the power grid; the features of power grid containing DG find expression in island effect, system reliability and short-circuit capacity while accidents occur. Present research situation of above-mentioned issues and the direction in the research are expounded.
出处
《电网技术》
EI
CSCD
北大核心
2010年第11期43-47,共5页
Power System Technology
基金
国家863高技术基金项目(2007AA05Z244)
国家自然科学基金项目(60534040)
广东省绿色能源技术重点实验室项目(2008A060301002)的资助~~
关键词
分布式电源
电力系统规划
电量预测
电能质量
distributed generation （DG）
power systemplanning
electricity consumption forecasting
power quality
