配电项目最大供电能力及增供电量效益的评估

发布时间：2018-05-27 09:01

本文选题：配电系统 + 增供电量效益　；参考：《电工技术学报》2017年S1期

【摘要】：提出一种配电网供电能力评估方法及配电网项目增供电量效益的预评估方法。基于主变负载率均衡的原则,以变电站负载率为自变量,以系统最大供电能力为目标函数,以主变N-1故障情况下负荷转移不超过变电站之间联络线传输容量以及变压器自身容量裕度为约束条件,构建配电系统最大供电能力评估模型,并提出基于线性规划的求解方法以简化运算。以项目投运前后系统最大供电能力与负荷预测值确定增供电量效益评估模型。既考虑了联络线及变压器容量的充分利用,同时兼顾了变电站负载均衡,保证了系统的安全供电和供电质量;既评估了配电系统最大供电能力,也实现了对配电系统项目增供电量效益的评估。通过实例分析,验证了该模型的有效性。
[Abstract]:This paper presents an evaluation method for power supply capacity of distribution network and a pre-evaluation method for increasing power supply benefit of distribution network project. Based on the principle of load balancing of main transformer, the load rate of substation is taken as independent variable, and the maximum power supply capacity of system is taken as objective function. The maximum power supply capacity evaluation model of distribution system is constructed under the condition that the load transfer of main transformer N-1 does not exceed the transmission capacity of tie-line between substations and the capacity margin of transformer itself. A solution method based on linear programming is proposed to simplify the operation. Based on the maximum power supply capacity and load forecasting value before and after the project is put into operation, the evaluation model of increasing power supply benefit is determined. Not only the full utilization of the tie-line and transformer capacity is considered, but also the load balance of the substation is taken into account to ensure the safe power supply and the power supply quality of the system, and the maximum power supply capacity of the distribution system is evaluated. Also realized to the distribution system project to increase the power supply benefit appraisal. The validity of the model is verified by an example.
【作者单位】：湖北省电力勘测设计院;强电磁工程与新技术国家重点实验室(华中科技大学电气与电子工程学院);
【基金】：国家自然科学基金资助项目(51677076)
【分类号】：TM72

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