水电站群长期优化调度方案潮流越限分析及调整方法

Power Flow Limit Analysis and Adjustment for Long-term Optimal Operation of Hydropower Plants

针对大规模水电站群长期优化调度计算结果不满足电网潮流安全约束的问题,建立水电优化调度系统与电网安全分析系统的数据匹配机制,设计程序实现水调方案到PSD-BPA潮流方式的数据自动整合;提出一种基于相似潮流方式线性过渡的分析方法,依据潮流越限临界点判断并增进约束,调整水调方案以满足潮流安全约束。并以云南省调56座水电站为例,验证了该数据整合与方案调整方法的可行性和合理性,实现了在满足发电水力水量约束与输电潮流安全约束条件下的水电站群长期优化调度。

As the result of long term optimal operation do not meet the power flow constraints, a program which integrates optimization scheme and PSD BPA data is designed, while implementing the interface of between optimal operation system and power grid security analysis system. An analysis method based on liner regression is proposed to find the limit of power flow, after adding matching constraints to the operation calculation the flow constraints have been met. Finally, taking long term optimal operation of hydropower system with 56 plants in Yunnan Province for an example, the feasible and practical of the method is verified while the constraints of water and power grid are both satisfied.