电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2015年
10期
81-86,116
,共7页
张海波%李增楠%孙玉伟%郑志勤
張海波%李增楠%孫玉偉%鄭誌勤
장해파%리증남%손옥위%정지근
同调识别%层次分析法%矩阵相似性%同调机群
同調識彆%層次分析法%矩陣相似性%同調機群
동조식별%층차분석법%구진상사성%동조궤군
coherence identification%analytic hierarchy process (AHP)%matrix similarity%coherent generator groups
针对现阶段动态等值同调识别过程中存在的主观性和片面性等问题,综合考虑多种因素对机组同调性的影响,借鉴层次分析法思想,建立实用的层次分析模型,将摇摆曲线、电气距离和机组参数等较突出的影响因素有机结合,从而使同调识别过程由以往单一决策转变为多属性综合决策。通过对已知同调性的标准系统同调矩阵与其各影响因素相似度矩阵的对比分析计算,综合确定层次分析判断矩阵,相对客观地确定各因素权重。应用分布聚类法计算获得最终相似度矩阵,完成电机聚类。以 IEEE 118节点54机系统和蒙西电网为算例,验证了所提方法的有效性和实用性。
針對現階段動態等值同調識彆過程中存在的主觀性和片麵性等問題,綜閤攷慮多種因素對機組同調性的影響,藉鑒層次分析法思想,建立實用的層次分析模型,將搖襬麯線、電氣距離和機組參數等較突齣的影響因素有機結閤,從而使同調識彆過程由以往單一決策轉變為多屬性綜閤決策。通過對已知同調性的標準繫統同調矩陣與其各影響因素相似度矩陣的對比分析計算,綜閤確定層次分析判斷矩陣,相對客觀地確定各因素權重。應用分佈聚類法計算穫得最終相似度矩陣,完成電機聚類。以 IEEE 118節點54機繫統和矇西電網為算例,驗證瞭所提方法的有效性和實用性。
침대현계단동태등치동조식별과정중존재적주관성화편면성등문제,종합고필다충인소대궤조동조성적영향,차감층차분석법사상,건립실용적층차분석모형,장요파곡선、전기거리화궤조삼수등교돌출적영향인소유궤결합,종이사동조식별과정유이왕단일결책전변위다속성종합결책。통과대이지동조성적표준계통동조구진여기각영향인소상사도구진적대비분석계산,종합학정층차분석판단구진,상대객관지학정각인소권중。응용분포취류법계산획득최종상사도구진,완성전궤취류。이 IEEE 118절점54궤계통화몽서전망위산례,험증료소제방법적유효성화실용성。
In view of the existing subjective and one-sidedness problems in the process of coherence identification for dynamic equivalence,the influences of various factors on the coherence of generators are taken into account.By drawing on the experience of analytic hierarchy process(AHP)for reference,a practical AHP model is developed.Key factors,such as swing curves,electrical distances and generator parameters,are combined to change the process of coherence identification from single dicision-making to multi-attribute decision-making.Through the comparison between the coherence matrixes of the standard systems with known coherence and the similarity matrixes of various factors, the AHP judgment matrix is determined,while the weight of each factor is determined objectively.The distributed clustering method is used to obtain the final similarity matrix,then the coherent generator clustering is completed.Simulation results of the IEEE 1 18-bus 54-unit system and Western Inner Mongolia power grid show that the method proposed is effective and practical.