CAJ | 학술논문

依托新疆哈密地区网架结构，针对高密度风电、光伏等新能源接入后哈密地区电网无功电压波动问题，基于风电有功出力随机变化、大规模风电及光伏脱网、电铁冲击负荷变化以及动态无功补偿装置（ SVC）控制不协调等因素，仿真分析哈密地区电网电压的波动情况，诊断高密度风电接入地区无功电压存在的风险，并提出改善电压波动的措施。研究结果阐明风电送出点短路容量偏小，风电出力波动易造成电压波动越限；动态无功补偿装置（ SVC）控制不协调易引起弱风电送出系统振荡。因此，通过高密度风电接入地区电压运行风险分析，对提高高密度风电接入地区电压稳定水平及减小对风机脱网的影响具有一定的参考价值。
의탁신강합밀지구망가결구，침대고밀도풍전、광복등신능원접입후합밀지구전망무공전압파동문제，기우풍전유공출력수궤변화、대규모풍전급광복탈망、전철충격부하변화이급동태무공보상장치（ SVC）공제불협조등인소，방진분석합밀지구전망전압적파동정황，진단고밀도풍전접입지구무공전압존재적풍험，병제출개선전압파동적조시。연구결과천명풍전송출점단로용량편소，풍전출력파동역조성전압파동월한；동태무공보상장치（ SVC）공제불협조역인기약풍전송출계통진탕。인차，통과고밀도풍전접입지구전압운행풍험분석，대제고고밀도풍전접입지구전압은정수평급감소대풍궤탈망적영향구유일정적삼고개치。
Depending on grid structure in Xinjiang Hami and aiming at the reactive and voltage fluctuation problems in the re-gion with the access of high density wind power, solar and other new energy, the voltage fluctuations in Hami region are ana-lyzed and the reactive voltage risk in high density wind region is diagnosed, based on the factors such as the random change of active wind output, the large-scale wind power and photovoltaic tripping, the shock load change of electrified railway and the control incoordination of dynamic reactive power compensation device ( SVC) .Then, the measures to improve the voltage fluc-tuations are proposed.The research results show that the short-circuit capacity of wind power at sending point is too small, and the wind power output fluctuations could easily make voltage fluctuations exceed the limit.And the incoordination of dy-namic reactive power compensation device makes the weak wind power system swing.Therefore, the factor analysis for voltage fluctuations in the high density wind region will provide a reference for improving the voltage stability and reducing the impact on wind turbine generator tripping.