摘要
分布式电源DG(distributed generation)并网对配电系统的电压和网损有着重要影响。分析了常见的几种DG,提出了它们各自在潮流计算中的模型以及处理方法,并采用前推回代法来计算有DG并网的配电系统的潮流。考虑到前推回代法处理PV节点的能力较差,引入了注入无功补偿法,该方法适合DG并入配电系统的潮流计算。然后,通过在33节点配电系统中进行大量测试,表明该方法是可行的。最后分析DG并网对系统电压和网损的影响。
There is a great impact on voltage profile and loss when DG（distributed generation） is introduced to distribution network. This paper analyzes several usual DGs and proposes their models and processing methods in power flow calculations. The forward-backward sweep method is adopted to calculate power flow of distribution network with DGs. Considered the weak capability of the forward-backward sweep method disposing PV nodes, a new algorithm compensation method of injecting reactive power is introduced, which is available to calculate distribution power flow with DGs. An example of 33-node system has proved the feasibility of this method. Finally, impact on voltage profile and loss are analyzed when DGs are connected to the distribution networks.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第17期78-81,87,共5页
Power System Protection and Control
关键词
分布式电源
配电网
潮流计算
前推回代
电压影响
网损
distributed generation
distribution network
power flow calculation
forward-backward sweep method
voltageprofile
loss
