| 计算电网中电压元件保护范围的新方法 |
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| 引用本文： | 罗长亮,吕飞鹏,廖小君,蒋科,郭亮.计算电网中电压元件保护范围的新方法[J].电力系统自动化,2009,33(1):66-69. |
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| 作者姓名： | 罗长亮 吕飞鹏 廖小君 蒋科 郭亮 |
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| 作者单位： | 1.四川大学电气信息学院，四川省成都市 610065; 2.四川电力职业技术学院，四川省成都市 610072 |
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| 基金项目： | 四川省应用基础研究项目 |
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| 摘 要： | 基于线路短路故障通用计算模型，利用正序网节点阻抗矩阵，根据电压元件保护范围末端相间短路时，保护安装处母线电压与电压元件定值相等的特点，提出了通过求解一元二次方程直接计算电压元件保护范围的新方法。该方法适用于各种接线形式的复杂网络，具有通用性强、计算量小、结果精确、易于编程实现等特点。
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| 关 键 词： | 整定计算 保护范围 电流电压保护 |
| 收稿时间： | 6/28/2008 9:56:12 PM |
| 修稿时间： | 2008/12/19 0:00:00 |
A New Method for Computing Protection Coverage of Voltage Element in Power Network |
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| LUO Changliang,L Feipeng,LIAO Xiaojun,JIANG Ke,GUO Liang.A New Method for Computing Protection Coverage of Voltage Element in Power Network[J].Automation of Electric Power Systems,2009,33(1):66-69. |
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| Authors: | LUO Changliang L Feipeng LIAO Xiaojun JIANG Ke GUO Liang |
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| Abstract: | In accordance with that setting value of a voltage element is equal to bus voltage on installation location of protection during phase-to-phase fault on the protection coverage end,based on the node impedance matrix of positive sequence network and general computation model for short circuit fault on the power line,a new method is proposed to directly obtain the protection coverage of voltage element by solving a unary quadratic equation.This method is suitable for all kinds of complex power network structures with such advantages as general-purpose,less computation burden,accurate results and easy to program,etc. |
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| Keywords: | setting calculation protection coverage current and voltage protection |
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