CAJ | 학술논문

风电的随机性导致大规模风电的接纳成为当前电力系统面临的重要问题。考虑到风电和水电的互补性，提出用水电厂来平抑由于风速的波动性和间歇性导致的风电场输出功率波动，通过控制水轮机实现风水协同运行的控制，使水电厂和风电场向电力系统提供的有功功率按调度计划输出。针对水轮机的特点，提出导前微分控制方案。仿真结果表明，在PID控制基础上并联导前微分控制比常规PID控制方案具有更好的控制效果。风电与水电的协同运行可平抑风电输出功率的波动性，减少对电网的冲击，有利于电网的长期稳定运行。
풍전적수궤성도치대규모풍전적접납성위당전전력계통면림적중요문제。고필도풍전화수전적호보성，제출용수전엄래평억유우풍속적파동성화간헐성도치적풍전장수출공솔파동，통과공제수륜궤실현풍수협동운행적공제，사수전엄화풍전장향전력계통제공적유공공솔안조도계화수출。침대수륜궤적특점，제출도전미분공제방안。방진결과표명，재PID공제기출상병련도전미분공제비상규PID공제방안구유경호적공제효과。풍전여수전적협동운행가평억풍전수출공솔적파동성，감소대전망적충격，유리우전망적장기은정운행。
The acceptance of large wind power is a problem because of the randomness of wind power. Taking into account the complementary between wind power and hydropower, a solution was proposed by using hydropower plants to stabilize the unstable wind power output caused by the volatility and intermittent wind speed. The control of wind farm and hydropower plant coordinating operation was realized by control the hydropower plant. It was guaranteed that the hydropower plant and wind farm together could provide active power as schedule. Considering to the characteristics of hydro-generator set, lead differential control scheme was put forward, adding a lead differential control on conventional PID control (LDPID). The simulation results show that this method has better control performance than the conventional control scheme. The complementary system could provide a smooth power output, which reduces the impact on the grid.