电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2015年
13期
75-80
,共6页
陈永华%唐冠军%宋晓芳%李雪明
陳永華%唐冠軍%宋曉芳%李雪明
진영화%당관군%송효방%리설명
风力发电%过载控制%低电压穿越%短时出力波动%切机策略
風力髮電%過載控製%低電壓穿越%短時齣力波動%切機策略
풍력발전%과재공제%저전압천월%단시출력파동%절궤책략
wind power generation%overload control%low voltage ride through%short-term fluctuations%generator tripping strategy
风电送出线路不满足N-1安全约束时,任意一条线路跳闸都会导致其他线路出现过载。针对集群式风电并网的特点,首先分析风电机组低电压穿越(LVRT)能力、风电短时出力波动对传统过载控制方案的影响,并提出针对性建议。在此基础上,进一步提出考虑风电出力变化趋势的过载切机方案,通过数值方法分析各风电场的出力变化趋势,动态优化选择切机对象,使得切机措施更加高效,减小风电送出线路再次发生过载的概率,从而保障风电外送通道的安全性。
風電送齣線路不滿足N-1安全約束時,任意一條線路跳閘都會導緻其他線路齣現過載。針對集群式風電併網的特點,首先分析風電機組低電壓穿越(LVRT)能力、風電短時齣力波動對傳統過載控製方案的影響,併提齣針對性建議。在此基礎上,進一步提齣攷慮風電齣力變化趨勢的過載切機方案,通過數值方法分析各風電場的齣力變化趨勢,動態優化選擇切機對象,使得切機措施更加高效,減小風電送齣線路再次髮生過載的概率,從而保障風電外送通道的安全性。
풍전송출선로불만족N-1안전약속시,임의일조선로도갑도회도치기타선로출현과재。침대집군식풍전병망적특점,수선분석풍전궤조저전압천월(LVRT)능력、풍전단시출력파동대전통과재공제방안적영향,병제출침대성건의。재차기출상,진일보제출고필풍전출력변화추세적과재절궤방안,통과수치방법분석각풍전장적출력변화추세,동태우화선택절궤대상,사득절궤조시경가고효,감소풍전송출선로재차발생과재적개솔,종이보장풍전외송통도적안전성。
Any line outage will lead to other lines overloading when the wind farm grid connection lines does not meet the N-1 security constraints.Considering cluster grid connected wind farms characteristics,this paper analyzes the impact of the wind farm”s low voltage ride through (LVRT) capability and short-term fluctuations on the traditional overload control scheme first,and then proposes a new generator tripping scheme on overload considering the trend of wind farm output.The trend is analyzed by using numerical method,optimizing tripping machine obj ect dynamically,making overload control more efficient and reducing the chance of wind farm grid connection lines overloading.The method will enhance the wind farms transmission corridor safety and reliability. This work is supported by National Key Technologies R&D Program(No.2012BAA15G00)and State Grid Corporation of China,Major Projects on Planning and Operation Control of Large Scale Grid(No.SGCC-MPLG003-2012).