摘要
在含分布式电源(DG)的复杂配网继电保护研究中引入可靠性和运行风险评估,有助于克服由于DG介入可能出现的保护拒动和误动。结合DG的随机性特点,从复杂配网电流保护的特点入手,在对其进行失效分析的基础上,将保护可靠性分析与脆弱性评估方法相结合,将保护风险评估与其在电力系统中的动作行为和配合关系相结合,从运行风险的角度分析DG对配网保护的影响及进一步提高配网保护运行管理水平的新途径。算例分析验证了方法的有效性。
The introduction of the reliability and operational risk assessment to the research of protections for distribution network with DGs is helpful for the decrease of protection failures.With the current protection for complex distribution network as a start,based on its failure analysis and according to the randomness of DG,the effect of DG on the protections of distribution network and the new measures to further enhance the management level of distribution protection is explored from the respect of operational risk,which combines the reliability analysis of protection with the vulnerability assessment and the risk assessment of protection with its behavior and coordination in power system.Case study shows the effectiveness of the proposed method.
出处
《电力自动化设备》
EI
CSCD
北大核心
2013年第6期7-12,共6页
Electric Power Automation Equipment
基金
国家自然科学基金重点资助项目(50837002)
中央高校基本科研业务费专项资金资助项目(11MG38)~~
关键词
风电
配电网
继电保护
电流保护
风险评估
概率模型
可靠性
wind power
distribution network
relay protection
current protection
risk assessment
probabilistic model
reliability
