CAJ | 학술논문

输电线路参数是电力系统各项仿真计算的基础，为此文章立足实测数据挖掘电网真实参数，研究了辨识模型、并联高抗、量测误差3个方面对线路参数辨识结果的影响。辨识模型表明，分布参数与集中参数辨识模型均可以采用p型等值模型进行计算，通过灵敏度分析线路长度对单位长度线路参数的影响。研究了高抗补偿位置、补偿度分别对辨识电阻、电抗和电容的影响程度。量测误差小扰动分析揭示了电压幅值、相角以及电流幅值、相角对参数辨识结果的影响机理，并通过仿真算例证实了高抗对辨识电容影响以及量测误差对辨识结果的影响程度。
수전선로삼수시전력계통각항방진계산적기출，위차문장립족실측수거알굴전망진실삼수，연구료변식모형、병련고항、량측오차3개방면대선로삼수변식결과적영향。변식모형표명，분포삼수여집중삼수변식모형균가이채용p형등치모형진행계산，통과령민도분석선로장도대단위장도선로삼수적영향。연구료고항보상위치、보상도분별대변식전조、전항화전용적영향정도。량측오차소우동분석게시료전압폭치、상각이급전류폭치、상각대삼수변식결과적영향궤리，병통과방진산예증실료고항대변식전용영향이급량측오차대변식결과적영향정도。
Parameters of transmission lines are the basis of computations and simulations of power system. Based on the synchronized phasor measurement-based data mining, the impacts of identification model, shunt reactor and measurement error on line parameter identification are analyzed. Analysis on identification model shows that the p-shaped equivalent model can be applied to the computation of distributed parameter identification model and lumped parameter identification model, and the influence of line length on unit length line parameters can be determined by sensitivity analysis. The respective incidences of shunt reactor position and compensation degree on the identification of resistance, reactance and capacitance are researched. Analysis on small perturbation caused by measurement error reveals the impacting mechanism of amplitudes and phase angles of voltage and current on parameter identification results, and the impact of shunt reactor on indentified capacitance and the impact of measurement error on identification results are confirmed by simulation example.