| 引用本文: | 傅军栋,喻勇,黄来福.不平衡负载的一种更加经济的补偿方法[J].电力系统保护与控制,2015,43(2):126-132.[点击复制] |
| FU Jundong,YU Yong,HUANG Laifu.A more economical compensation method for unbalanced load[J].Power System Protection and Control,2015,43(2):126-132[点击复制] |
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| 摘要: |
| 针对低压配电网不平衡负载降损的问题，会联想到电容补偿器，其在供电系统中起到提高电网的功率因数与降低供电变压器及输送线路的损耗，提高供电效率以及改善供电环境的作用。传统方法只需计算出负载所需要补偿的导纳值，然后配置相应的电容器，比较新的一种导纳值计算方法如平衡分量法。提出一种“线路调整法”的降损补偿方法，进行负荷三相平衡线路调整，仅需对用户集表箱的接入相做调整。提出一种基于优化算法的智能换相策略，不需要增加额外投资，通过算例分析验证了此方法的正确性和有效性。因此，“线路调整法”是一种更简单、更经济的降损方法。 |
| 关键词: 无功补偿 不平衡负载 线路调整法 三相不平衡度 负荷电流 |
| DOI：10.7667/j.issn.1674-3415.2015.02.020 |
| 投稿时间：2014-04-17修订日期：2014-05-23 |
| 基金项目: |
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| A more economical compensation method for unbalanced load |
| FU Jundong,YU Yong,HUANG Laifu |
| (School of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang 330013, China;School of Electrical and Information Engineering, Hunan University, Changsha 410082, China) |
| Abstract: |
| For low-voltage distribution network unbalanced load loss reduction, we think of the capacitance compensation, which can improve the power factor of power grid and reduce the loss of power transformers and transmission lines, as well as improve the efficiency of power supply improvement and environment in the power supply system. Traditional methods simply calculate the admittance compensation value required by the load, then configure the appropriate capacitor; a relatively new kind of admittance calculation method is the balance component method. This paper puts forward a "Line Adjustment Act" drop loss compensation method to perform three phase load line regulation, which only adjusts the access phase of users’ meter box. A commutation strategy based on intelligent optimization algorithm is proposed, which does not require additional investment, and through a numerical example, the validity and effectiveness of this method are verified. Therefore, the "Line Adjustment Act" is a more simple and more economical method of reducing loss. |
| Key words: reactive power compensation unbalanced load Line Adjustment Act three phase unbalance load current |
