CAJ | 학술논문

对当前国内外风电系统LVRT控制策略及风电场继电保护问题进行了综述。首先分析不同类型风电机组的LVRT控制策略，讨论其对保护的影响，其次分析了风电机组和风电场的故障特征，最后讨论了风电场内集电线路、风电场送出线路的故障特征和相应的保护策略。针对传统风电场继电保护的适应性问题，建议构建满足风电机组本体保护条件和风电并网技术要求，并兼顾各类风电机组LVRT实现方式和附加硬件结构的风电机组LVRT协调控制策略，进一步在该协调控制策略作用下进行风电场的继电保护研究，开发适用于风电场集电线路、送出线路保护新原理与新技术，解决风电场继电保护面对的问题。
대당전국내외풍전계통LVRT공제책략급풍전장계전보호문제진행료종술。수선분석불동류형풍전궤조적LVRT공제책략，토론기대보호적영향，기차분석료풍전궤조화풍전장적고장특정，최후토론료풍전장내집전선로、풍전장송출선로적고장특정화상응적보호책략。침대전통풍전장계전보호적괄응성문제，건의구건만족풍전궤조본체보호조건화풍전병망기술요구，병겸고각류풍전궤조LVRT실현방식화부가경건결구적풍전궤조LVRT협조공제책략，진일보재해협조공제책략작용하진행풍전장적계전보호연구，개발괄용우풍전장집전선로、송출선로보호신원리여신기술，해결풍전장계전보호면대적문제。
The current LVRT control strategy and relay protection of wind farms at home and abroad are summarized .Firstly, the LVRT control strategies for different types of wind turbines are analyzed , and their impacts on the protection are discussed . Secondly , the fault characteristics of wind turbines and wind farms are analyzed .Finally, the fault characteristics of collecting power lines in wind farms and outgoing lines of wind farms are also discussed as well as the corresponding protection strategies . Aiming at the suitability of traditional relay protection for wind farms , it is suggested to construct a coordinated control strategy which not only considers WTG body protection condition and wind power technology requirements , but also gives a considera-tion to the means of LVRT realization and additional hardware structure of various types of wind turbines .And then, the re-search goes further into the relay protection of wind farms under the proposed coordinated control strategy , and it will develop the new applicable principles and technologies for collecting power lines and outgoing lines of wind farms , which can effective-ly solve the relay protection problems faced by wind farms .