交直流混联电力系统电压崩溃风险评估  

Voltage Collapse Risk Assessment of AC-DC Power System

作　　者：赵建伟[1] 严正[1] 孙华东[2] 易俊[2] 

机构地区：[1]上海交通大学电气工程系电力传输与功率变换控制教育部重点实验室,上海200240 [2]中国电力科学研究院,北京100085

出　　处：《水电能源科学》2011年第10期193-196,115,共5页Water Resources and Power

摘　　要：将风险理论应用于交直流混联电力系统的电压稳定分析中,结合电压崩溃发生的概率和产生的后果,定量地求取了不同负荷水平下系统发生电压崩溃的风险程度,并探讨了直流输电容量和直流控制方式对交直流混联电力系统电压崩溃风险的影响。通过确定SVC最佳无功补偿容量的实例,说明电压崩溃风险评估方法在协调电力系统安全性与经济性方面的独特优势和应用前景。Risk theory is applied to AC-DC power system voltage stability analysis. By integrating the probability of voltage collapse and its consequence, we calculate the voltage collapse risk of power system on various load levels. Then, the influence of different transmission capacity and control modes of DC lines on the voltage collapse risk is discussed. Fi nally, an example of optimized capacity of SVC demonstrates that the voltage collapse risk assessment method may contribute to coordinating the security and economy of power systems and be widely applied prospect.

关 键 词：高压直流输电 交直流混联 电压崩溃 风险 评估 

分 类 号：TM712[电气工程—电力系统及自动化]