CAJ | 학술논문

发电机作为电力系统中的重要设备,对电压稳定性具有重要的作用.为了研究发电机对电压稳定性的影响,应用蚵微同构正规形对电力系统潮流方程进行分析,得到有功非线性参与因子,并用于估计发电机对电压稳定性的影响程度.由于所提出的方法可计及电力系统非线性特性对电压稳定性的影响,因此与线性化分析方法相比,所提出的方法在系统具有强非线性特性的条件下,仍能得到准确的结果.为验证所提出方法的有效性,将所提出的方法用于IEEE 14节点系统,并分析了电力系统的非线性行为.算例证实了有功非线性参与因子的有效性.
발전궤작위전력계통중적중요설비,대전압은정성구유중요적작용.위료연구발전궤대전압은정성적영향,응용가미동구정규형대전력계통조류방정진행분석,득도유공비선성삼여인자,병용우고계발전궤대전압은정성적영향정도.유우소제출적방법가계급전력계통비선성특성대전압은정성적영향,인차여선성화분석방법상비,소제출적방법재계통구유강비선성특성적조건하,잉능득도준학적결과.위험증소제출방법적유효성,장소제출적방법용우IEEE 14절점계통,병분석료전력계통적비선성행위.산예증실료유공비선성삼여인자적유효성.
Generators are of different importance to the system in terms of voltage stability. It is extremely vital to research generators' impacts on the voltage stability. In this paper, the theory of the normal forms of diffeomorphism is used to analyze the power flow equations. Then nonlinear active participation factor is obtained and is used to determine the influence of generators to voltage stability. By this method, the nonlinearity of power systems can be taken into consideration. Therefore, the impact of generators can be measured with more accuracy even for the cases in which the system is characterized with strong nonlinearity. In order to show the validity of the proposed method, the IEEE 14-bus test system is used as case study. The steady-state voltage stability index verifies the proposed method. The results show that nonlinear active participation factor can describe the characteristics even when power systems are operating at much stressed condition.