| 引用本文: | 张勇军,张锶恒,刘斯亮,等.考虑分布式光伏与储能接入的配变双层规划[J].电力系统保护与控制,2020,48(24):9-15.[点击复制] |
| ZHANG Yongjun,ZHANG Siheng,LIU Siliang,et al.Dual planning of a distribution transformer considering the impact of distributed photovoltaics and energy storage access[J].Power System Protection and Control,2020,48(24):9-15[点击复制] |
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| 摘要: |
| 大量分布式光伏低压并网会加剧配变过载风险，而储能接入则有助于改善配变的负载均衡度，两者均会影响配变的配置决策。为此，提出了一种新的配变选型定容双层规划方法。模型方面，上层模型以配变全寿命周期成本最小为目标，决策配变容量型号；下层模型计及光伏与负荷不确定性影响，对状态变量设置机会约束。并在分析配变全寿命周期各成本子项随运行年数变化特性的基础上，以配变低压侧等效注入有功方差最小或平方和最小为目标，决策配变运行寿命及各运行年的储能充放电控制时序。算法方面，采用灾变遗传算法求解上层问题，调用GAMS求解器CONOPT以及点估计法联合求解下层问题。算例仿真表明，所提方法在安全消纳分布式光伏的前提下能够提高经济性。 |
| 关键词: 光伏 储能 配电变压器 全寿命周期 双层规划 |
| DOI：DOI: 10.19783/j.cnki.pspc.200128 |
| 投稿时间：2020-02-07修订日期：2020-04-17 |
| 基金项目:国家自然科学基金项目资助(51777077) |
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| Dual planning of a distribution transformer considering the impact of distributed photovoltaics and energy storage access |
| ZHANG Yongjun,ZHANG Siheng,LIU Siliang,YI Yingqi |
| (Research Center of Smart Energy Technology, School of Electric Power,
South China University of Technology, Guangzhou 510641, China) |
| Abstract: |
| When there are numbers of distributed photovoltaic connected to low-voltage grids, the risk of heavy or over load of the distribution transformer is increased. After the energy storage is connected, it improves the load balance of the distribution transformer. Both will affect the constant volume decision of distribution transformers. For this reason, this paper proposes a new method of dual planning of distribution transformer capacity and size. The upper model aims at minimizing the life cycle cost of the distribution transformer, and the decision variables are type and capacity. The lower model considers the influence of the uncertainty of photovoltaics and load, and sets the opportunity constraint on the state variable. It is based on the analysis of the characteristics of each sub-item of the distribution life cycle cost during the running year, and takes the minimum variance or square sum of the equivalent injected active power of the low-voltage side of the distribution transformer as the target to determine the operating life of the distribution transformer and the timing of charge and discharge control of the energy storage in each operating year. The catastrophic genetic algorithm is used to solve the upper layer problem, and the solver CONOPT of GAMS and point estimation method are used to jointly solve the lower layer problem. The simulation results show that the proposed method can improve economy under the premise of safely dissipating distributed PV.
This work is supported by National Natural Science Foundation of China (No. 51777077). |
| Key words: photovoltaic energy storage distribution transformer LCC dual planning |
