基于PSCAD/EMTDC 750kV输电线路传输特性研究

Modeling and simulation of Qinghai- Xinjiang 750 kV transmission Line transmission characteristics based on PSCAD / EMTDC

为了提高新疆电网与西北主网之间供电的可靠性,本文基于PSCAD/EMTDC对青海柴达木至新疆哈密750 kV输电线路进行了建模,并对其传输特性和极限输送功率进行了仿真和研究。结果表明:青海柴达木至新疆哈密750 kV输电线路的自然传输功率为2 167 MW,正常极限传输功率约为4 500 MW,事故状态下极限传输功率可达5 000 MW。该研究为750 kV线路的安全可靠运行以及750 kV输电线路设计和计算输送功率提供参考。

In order to improve power supply between Xinjiang and the Northwest Power Grid＇ s main network reliability, the model of the 750kv transmission line from Chaidamu in Qinghai province to Hami in Xinjiang province was built, and its transmission characteristics and power limit are simulated and studied based on PSCAD/EMTDC. The results show that its natural transmission power is 2 167 MW; normal limit transmission power is about 4 500 MW. The accident situation limits transmission power can reach 5 000 MW. The study provides the reference both to ensure the safe reliable operation of the 750 kv line and for the design and the calculation of the transmission power of 750 kV transmission line.