CAJ | 학술논문

针对水电机组一次调频被考核申述中普遍存在考核起始时刻延迟的情况，分析了一次调频考核中起始时刻的作用，根据考核方法开发出一次调频动作特性评价软件，对利用 PSD-BPA 暂态稳定程序内电力系统分析常用的水电机组原动机及其调节系统模型仿真的电网频率缓坡扰动过一次调频死区的原动机一次调频响应进行了计算和判断，得到考核起始时刻不同延迟下的一次调频理论动作电量与实际动作电量，当该时刻延迟过一定时间会造成正确的一次调频动作被误判为不合格，表明考核起始时刻延迟会导致一次调频误考核。为提高一次调频考核准确性，分析了考核起始时刻延迟致使误判的原因，依据实例指出会造成一次调频考核起始时刻延迟的几种情况，并给出了应对建议。
침대수전궤조일차조빈피고핵신술중보편존재고핵기시시각연지적정황，분석료일차조빈고핵중기시시각적작용，근거고핵방법개발출일차조빈동작특성평개연건，대이용 PSD-BPA 잠태은정정서내전력계통분석상용적수전궤조원동궤급기조절계통모형방진적전망빈솔완파우동과일차조빈사구적원동궤일차조빈향응진행료계산화판단，득도고핵기시시각불동연지하적일차조빈이론동작전량여실제동작전량，당해시각연지과일정시간회조성정학적일차조빈동작피오판위불합격，표명고핵기시시각연지회도치일차조빈오고핵。위제고일차조빈고핵준학성，분석료고핵기시시각연지치사오판적원인，의거실례지출회조성일차조빈고핵기시시각연지적궤충정황，병급출료응대건의。
In allusion to problem of initial time delay in check on primary frequency modulation of hydropower generating u-nit,this paper analyzes effect of initial time in check on primary frequency modulation.According to check method,assess-ment software for action characteristic of primary frequency modulation was developed,primary frequency modulation re-sponse of the prime motor in over primary frequency modulation dead area of gentle slope disturbance of power grid fre-quency simulated by common prime motor and its governing system model of the hydropower generating unit for power sys-tem analysis in PSD-BPA transient stability program was calculated and judged.Thus,theoretical action electric quantity and practical action electric quantity of primary frequency modulation under different delay of initial time was obtained.It was considered that correct primary frequency modulation action might be judged as disqualified when the initial time delayed a certain time which indicated that initial time delay might cause wrong check on the primary frequency modulation.In order to improve veracity of check on primary frequency modulation,reasons for erroneous judgement caused by initial time delay were analyzed.Based on examples,several situations of initial time delay in check on primary frequency modulation were pointed out and corresponding suggestions were provided.