CAJ | 학술논문

前端调速式风电机组具有较强的动态无功调节能力，针对由前端调速式风电机组组成的风电场存在随风电出力的变化而引起的并网点电压波动的问题，提出了一种前端调速式风电场无功电压分层控制策略。该策略首先确定了风电场无功控制点的选取，利用风电场控制点电压偏差，通过整定控制得到整个风电场无功需求量，以风电场内有功网损最小为目标函数，采用改进的遗传算法优化分配给各台风机，并结合静止同步补偿器的无功输出来调节整个风电场的无功输出，达到维持控制点电压稳定的目的。最后以某一风电场的仿真结果验证了该策略的有效性和可行性。
전단조속식풍전궤조구유교강적동태무공조절능력，침대유전단조속식풍전궤조조성적풍전장존재수풍전출력적변화이인기적병망점전압파동적문제，제출료일충전단조속식풍전장무공전압분층공제책략。해책략수선학정료풍전장무공공제점적선취，이용풍전장공제점전압편차，통과정정공제득도정개풍전장무공수구량，이풍전장내유공망손최소위목표함수，채용개진적유전산법우화분배급각태풍궤，병결합정지동보보상기적무공수출래조절정개풍전장적무공수출，체도유지공제점전압은정적목적。최후이모일풍전장적방진결과험증료해책략적유효성화가행성。
The front-end speed adjusting wind turbine has strong dynamic reactive power regulation ability. Aiming at the wind farm with the front-end speed adjusting wind turbine exists grid connection node voltage fluctuation problem caused by the change of wind power, a hierarchical control strategy of reactive voltage in the front-end speed adjusting wind farm is proposed. The strategy determines the selection of the reactive power control point in the wind farm, utilizes the voltage deviation of the wind farm control point, and obtains the reactive power demand of the whole wind farm by the tuning control. The minimum real power loss of the wind farm is used as objective function to allocate to each wind turbine based on the optimized and improved genetic algorithm. The strategy combines the reactive power output of the Static Synchronous Compensator to adjust the reactive power output of the whole wind farm and thus to achieve the purpose of maintaining the voltage stability of the control point. The simulation results prove the feasibility and effectiveness of the strategy.