| 引用本文: | 高俊青,胡翔,邵叶晨,等.计及主变上层油温约束的受端电网的最小切负荷量优化方法[J].电力系统保护与控制,2018,46(15):36-44.[点击复制] |
| GAO Junqing,HU Xiang,SHAO Yechen,et al.A minimization optimization method of cutting load in receiving power system considering linear constraints of top oil temperature of transformers[J].Power System Protection and Control,2018,46(15):36-44[点击复制] |
|
| 摘要: |
| 提出一种计及主变上层油温约束的受端电网的最小切负荷量优化方法。首先在主变上层油温与主变负荷之间的关系曲线基础上，对其进行了线性等效，建立了主变上层油温线性约束。随后，提出了计及主变上层油温约束的受端电网的最小切负荷量优化模型。该模型以220 kV站所带的110 kV线路开关的0-1状态和220 kV主变负荷的削减量为优化变量，建立了全网切负荷总量最小的目标函数，约束条件包含有功功率平衡约束、110 kV电网辐射型结构约束，并引入上述主变上层油温的线性约束，最终形成所建模型。由于该模型是一个二次整数规划问题，采用CPLEX工具箱对其进行了求解。最后，通过某实际220 kV/110 kV大型受端电网进行了仿真分析，验证了所建模型的有效性。 |
| 关键词: 受端电网 主变上层油温 线性约束 最小切负荷量 |
| DOI：10.7667/PSPC171134 |
| 投稿时间：2017-07-27修订日期：2017-10-01 |
| 基金项目:重庆市自然科学基金资助(cstc2015jcyjBX0033) |
|
| A minimization optimization method of cutting load in receiving power system considering linear constraints of top oil temperature of transformers |
| GAO Junqing,HU Xiang,SHAO Yechen,GUO Qiang,LEI Chao,WANG Qianggang,ZHOU Niancheng |
| (Zhejiang Truly Electric Co., Ltd., Hangzhou 311100, China;State Grid Tianfu Power Supply Company, Chengdu 610000, China;State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University, Chongqing 400044, China) |
| Abstract: |
| This paper proposes a minimization optimization method of cutting load in receiving power system considering linearized constraints of top oil temperature of transformers. First, based on relation curve between the transformer oil temperature and loads, the linearized constraint of transformer oil temperature is established. And then, a minimization optimization model of cutting load in receiving power system considering linear constraints of upper oil temperature of transformers is proposed. This model contains optimization variables of 110 kV breaker’s 0-1 states and cutting loads of 220 kV transformers. The objective functions are the minimization of cutting load in receiving power system, and the constraints include the real power balance equations, the radial 110 kV power grid equation, as well as the above-mentioned linearized constraints of oil temperature of transformers, and the new model is formed eventually. Because this model is a mixed integer quartic programming problem, CPLEX tools are used for solving it. Finally, a large 220 kV/110 kV receiving power system is simulated and analyzed, verifying that the proposed model is effective. This work is supported by Natural Science Foundation of Chongqing (No.cstc2015jcyjBX0033). |
| Key words: receiving power system top oil temperature of transformers linearized constraints minimization of cutting load |
