| 10kV交流配电网升级改造不同方案的对比分析 |
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| 引用本文： | 杨卫朋,张爱民,李俊刚,张杭,王建华.10kV交流配电网升级改造不同方案的对比分析[J].电力系统自动化,2016,40(21):217-223. |
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| 作者姓名： | 杨卫朋 张爱民 李俊刚 张杭 王建华 |
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| 作者单位： | 西安交通大学电气工程学院, 陕西省西安市 710049,西安交通大学电气工程学院, 陕西省西安市 710049,国家电网许继集团有限公司, 河南省许昌市 461000,西安交通大学电气工程学院, 陕西省西安市 710049,西安交通大学电气工程学院, 陕西省西安市 710049 |
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| 摘 要： | 选择20kV配电电压等级和采用中压直流配电在现有线路上进行改造升级都能够解决当前国内10kV交流配电网供电能力不足的问题,但每种方案的特点和适用情况各有不同。文中对配电网升级改造的不同方案进行对比分析。首先根据线路的电气绝缘配合要求选择±10kV和±15kV作为待研究的直流配电电压等级。然后,以辐射状配电网为例比较了分别采用10kV交流、20kV交流、±10kV和±15kV直流配电等4种方案时的供电能力,分析了采用不同方案时运行效率随总负荷、供电半径、中压直流负荷及分布式电源并网功率等的变化情况。对4种方案的经济性进行了初步的分析。
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| 关 键 词： | 配电网 升级改造 20 kV交流 中压直流 供电能力 运行效率 经济性 |
| 收稿时间： | 2015/12/21 0:00:00 |
| 修稿时间： | 2016/7/28 0:00:00 |
Comparative Analysis on Different Upgrading and Reform Schemes for 10 kV AC Power Distribution Network |
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| YANG Weipeng,ZHANG Aimin,LI Jungang,ZHANG Hang and WANG Jianhua.Comparative Analysis on Different Upgrading and Reform Schemes for 10 kV AC Power Distribution Network[J].Automation of Electric Power Systems,2016,40(21):217-223. |
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| Authors: | YANG Weipeng ZHANG Aimin LI Jungang ZHANG Hang and WANG Jianhua |
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| Affiliation: | School of Electrical Engineering, Xi''an Jiaotong University, Xi''an 710049, China,School of Electrical Engineering, Xi''an Jiaotong University, Xi''an 710049, China,State Grid Xuji Group Corporation, Xuchang 461000, China,School of Electrical Engineering, Xi''an Jiaotong University, Xi''an 710049, China and School of Electrical Engineering, Xi''an Jiaotong University, Xi''an 710049, China |
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| Abstract: | The insufficiency of power supply capability for 10 kV power distribution network(PDN)can be solved by employing 20 kV AC voltage level or adopting DC power distribution technology on existing transmission lines. While for each scheme there are different characteristics and applicable conditions. The paper mainly focuses on the comparison of different PDN reform and upgrading schemes. Firstly, ±10 kV and ±15 kV are selected as the DC voltage levels to be studied according to the relative electrical insulation coordination conditions. Then, the power supply capabilities and operation efficiency changes with the total load, power supply radius, medium voltage DC load and distributed generator connection power variation conditions for 10 kV AC, 20 kV AC, ±10 kV DC and ±15 kV DC power distribution schemes are analyzed and compared by a typical radial topology example case. Preliminary economy analysis has also been carried out on these four schemes. |
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| Keywords: | power distribution network reform and upgrading 20 kV AC medium voltage DC power supply capability operation efficiency economy |
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