计及风力发电的配电网电压稳定性评估框架研究
把风电场功率圆的稳定性作为评估配电网稳定性的依据之一,计算功率圆的电压稳定性、电网架构安全性和用户用电的可靠性等指标,最后提出配电网的安全性综合指标。分三种情况对电压稳定性进行评估：风电场并入网络时,计算流进负荷点的冲击电流,得到电压波动情况,评估网络电压稳定性;风电场切出网络时,计算负荷点失去电压支撑的大小得到电压跌落情况,评估网络电压稳定性;风电场间歇输出功率时,考虑风电场改变配电网的功率潮流,重新构造电网电压稳定指标,根据风电场的有功和无功判断系统电压稳定性。最后以IEEE123节点系统为例,验证了所提计及风力发电的配电网电压稳定评估框架的有效性。...
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| Published in | 电力系统保护与控制 Vol. 41; no. 17; pp. 77 - 81 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
暨南大学电气信息学院,广东 珠海,519070
2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-3415 |
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| Abstract | 把风电场功率圆的稳定性作为评估配电网稳定性的依据之一,计算功率圆的电压稳定性、电网架构安全性和用户用电的可靠性等指标,最后提出配电网的安全性综合指标。分三种情况对电压稳定性进行评估：风电场并入网络时,计算流进负荷点的冲击电流,得到电压波动情况,评估网络电压稳定性;风电场切出网络时,计算负荷点失去电压支撑的大小得到电压跌落情况,评估网络电压稳定性;风电场间歇输出功率时,考虑风电场改变配电网的功率潮流,重新构造电网电压稳定指标,根据风电场的有功和无功判断系统电压稳定性。最后以IEEE123节点系统为例,验证了所提计及风力发电的配电网电压稳定评估框架的有效性。 |
|---|---|
| AbstractList | 把风电场功率圆的稳定性作为评估配电网稳定性的依据之一,计算功率圆的电压稳定性、电网架构安全性和用户用电的可靠性等指标,最后提出配电网的安全性综合指标。分三种情况对电压稳定性进行评估：风电场并入网络时,计算流进负荷点的冲击电流,得到电压波动情况,评估网络电压稳定性;风电场切出网络时,计算负荷点失去电压支撑的大小得到电压跌落情况,评估网络电压稳定性;风电场间歇输出功率时,考虑风电场改变配电网的功率潮流,重新构造电网电压稳定指标,根据风电场的有功和无功判断系统电压稳定性。最后以IEEE123节点系统为例,验证了所提计及风力发电的配电网电压稳定评估框架的有效性。 TM315%TM712; 把风电场功率圆的稳定性作为评估配电网稳定性的依据之一，计算功率圆的电压稳定性、电网架构安全性和用户用电的可靠性等指标，最后提出配电网的安全性综合指标。分三种情况对电压稳定性进行评估：风电场并入网络时，计算流进负荷点的冲击电流，得到电压波动情况，评估网络电压稳定性；风电场切出网络时，计算负荷点失去电压支撑的大小得到电压跌落情况，评估网络电压稳定性；风电场间歇输出功率时，考虑风电场改变配电网的功率潮流，重新构造电网电压稳定指标，根据风电场的有功和无功判断系统电压稳定性。最后以IEEE123节点系统为例，验证了所提计及风力发电的配电网电压稳定评估框架的有效性。 |
| Abstract_FL | A method of distribution network voltage stability assessment with power circle index is presented. By means of calculating the index of voltage stability, security of power grid structures and reliability of power consumption, the composite indicator of the distribution network is introduced. The voltage stability is assessed in three steps:when wind farm is integrated into the network, the impulse current flowing through the power circle is calculated and voltage sag of load point is obtained to assess voltage stability; when it exits from the network, voltage stability is assessed by calculating voltage drop with the loss of voltage support;when it generates fluctuant power continually, the change of power flow in the network is considered and voltage stability assessment equation is reconstructed to determine voltage stability with active and reactive power of wind farm. Taking the IEEE123 as the sample, the effectiveness of the voltage stability assessment frame for distribution network with wind farms is proved. This work is supported by National Natural Science Foundation of China (No. 51007030). |
| Author | 刘新东 郭容 张建芬 曾锐明 |
| AuthorAffiliation | 暨南大学电气信息学院,广东珠海519070 |
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| Author_FL | GUO Rong ZENG Rui-ming LIU Xin-dong ZHANG Jian-fen |
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| Keywords | 风电发电 电压稳定性 power circle reliability index distribution network 配电网 功率圆 wind farm integration voltage stability 可靠性指标 |
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| Notes | A method of distribution network voltage stability assessment with power circle index is presented. By means of calculating the index of voltage stability, security of power grid structures and reliability of power consumption, the composite indicator of the distribution network is introduced. The voltage stability is assessed in three steps： when wind farm is integrated into the network, the impulse current flowing through the power circle is calculated and voltage sag of load point is obtained to assess voltage stability; when it exits from the network, voltage stability is assessed by calculating voltage drop with the loss of voltage support; when it generates fluctuant power continually, the change of power flow in the network is considered and voltage stability assessment equation is reconstructed to determine voltage stability with active and reactive power of wind farm. Taking the IEEE 123 as the sample, the effectiveness of the voltage stability assessment frame for distribution network with wind farm |
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| SubjectTerms | 功率圆 可靠性指标 电压稳定性 配电网 风电发电 |
| Title | 计及风力发电的配电网电压稳定性评估框架研究 |
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