摘要
风电场35kV系统故障不能快速切除是风电机组脱网容量增加的主要原因之一。在风电场35kV出线配置纵联电流差动保护,可快速切除故障,缩短系统故障时间,避免非故障支路风电机组脱网,从而提升含风电场电力系统的稳定运行能力。在MATLAB平台上搭建了含风电场的电力系统仿真模型,针对风电机组35kV送出线路上的各种故障,比较了线路配置纵联电流差动保护和配置常规三段式电流保护时风电场的动作行为。结果表明,线路配置纵联电流差动保护可以提升风电场的稳定运行能力。
The failure of 35 kV system in wind farm can not be eliminated quickly, which is one of themain reasons for the increase of the capacity of wind turbines. Line configuration in wind farm 35 kV longi-tudinal differential current protection, can quickly remove the fault, shorten the time of system failure,avoid non fault branches off grid wind turbines, so as to enhance the stability of power system containingwind farms. To build a simulation model of power system with wind farm on the MATLAB platform, aim-ing at all kinds of fault of wind turbine 35 kV transmission lines, the line current differential protectionand configuration of the conventional three section current protection action of wind farms. The resultsshow that the line configuration and differential current differential protection can improve the stability ofthe wind farm.
出处
《河南科技》
2017年第19期122-125,共4页
Henan Science and Technology
关键词
纵联电流差动
风电场
稳定运行能力
longitudinalcurrentdifferential
windfarm
stableoperationcapability
