| 引用本文: | 樊艳芳,侯俊杰,晁勤,王一波.一种抗暂态超越的集群风电送出线时域方程模型误差修正距离保护[J].电力自动化设备,2018,(1): |
| FAN Yanfang,HOU Junjie,CHAO Qin,WANG Yibo.Time-domain equation model deviation correction distance protection for cluster wind power transmission line with anti-transient ability[J].Electric Power Automation Equipment,2018,(1): |
|
| 摘要: |
| 双馈风电系统谐波含量高、频率偏移、弱馈性等故障特征造成传统工频距离保护存在适应性问题；时域距离保护在风电短距离送出线路中适应性较好，但在风电长距离送出线中受分布电容的影响易发生距离I段暂态超越现象。提出一种抗暂态超越的集群风电送出线时域方程模型误差修正距离保护。从长距离送出线距离保护适应性角度出发，分析基于集中参数线路模型的时域方程模型误差，提出基于时域方程模型误差的时域距离保护测量电抗修正方法，并考虑过渡电阻参数的影响，构建适用于集群风电长距离送出线距离保护动作判据。通过新疆某地区集群双馈/直驱集群风电送出线发生故障时的实验数据，测试验证了所提出的时域方程模型误差修正距离保护能较好地适用于各类型集群风电长距离送出线，有效地避免距离I段区外发生故障时的暂态超越现象，并且抗过渡电阻性能良好。 |
| 关键词: 风电 风电集群 送出线 距离保护 时域方程 模型误差 |
| DOI：10.16081/j.issn.1006-6047.2018.01.002 |
| 分类号:TM77;TM614 |
| 基金项目:国家自然科学基金资助项目(51467019) ；国家国际科技合作专项资助项目(2013DFG61520);2017年新疆维吾尔自治区研究生科研创新项目( XJGRI2017017) |
|
| Time-domain equation model deviation correction distance protection for cluster wind power transmission line with anti-transient ability |
|
FAN Yanfang, HOU Junjie, CHAO Qin, WANG Yibo
|
|
School of Electrical Engineering, Xinjiang University, Urumqi 830047, China
|
| Abstract: |
| Conventional power frequency distance protections have adaptability problems due to the high harmonics, frequency deviation and weak feedback in doubly-fed wind power system. Distance protection based on time domain in short distance wind power outgoing lines has a better adaptability, but in long distance wind power outgoing lines, the influence of distributed capacitance is prone to transient transcendence of distance protection zone I. A distance protection scheme that can reduce the influence of transient transcendence by correcting cluster wind power outgoing line model is proposed. From the point of adaptability of long distance wind power outgoing line, the error of time-domain equation model based on lumped parameter circuit model is analyzed, a correction method based on the error of time-domain equation model for time domain distance protection reactance measurement is proposed, and with the consideration of the impact of transition resistance parameters, an operation criterion adapted to long distance outgoing lines of the cluster wind power is established. Through experimental data of a Xinjiang area cluster of DFIG/D-PMSG wind power outgoing line when the fault happens, the proposed time-domain equation model corrected distance protection is tested, the results verify that it can well adapt to different kinds of cluster wind power outgoing lines, avoid transient transcendence when faults occur out of the protection zone I, and the ability of the proposed protection against transition resistance is good. |
| Key words: wind power wind farm cluster outgoing line distance protection time-domain equation model error |
