在分布式发电的配电网络中对电压违规的动态风险评估
1Electric Power Science Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China.
Entropy (Basel, Switzerland)
|December 23, 2023
概括
本研究介绍了分布式发电 (DG) 分布网络中电压违规的动态风险评估. 该方法准确地模拟随机变量,并评估电压违规风险,提高电网稳定性.
科学领域:
- 电气工程 电气工程
- 电力系统分析 分析 分析
- 风险评估 风险评估
背景情况:
- 由于经济和社会发展需求,分布式发电 (DG) 越来越多地融入发电配电网络.
- 需要强大的方法来评估在具有随机负载和DG特征的网络中的电压违规.
- 在分销网络中建模相关的GD源的挑战.
研究的目的:
- 提出一种动态风险评估方法,用于分布式发电 (DG) 的配电网络中电压违规.
- 在不同的环境条件下准确地建模负载和DG的概率行为.
- 通过使用新型严重性指数,量化评估电压违规风险.
主要方法:
- 对随机变量 (负载,DG) 的概率密度函数的边界内核密度估计.
- 罗森布拉特逆变换用于相互关联的DG的独立变换,提高了概率学负载流的准确性.
- 基于公用事业函数的电压违规严重性指数的开发.
主要成果:
- 随机变量的准确建模,考虑时间和环境因素 (风速,太阳辐射).
- 在概率负载流量计算中提高准确性,通过独立转换相关的DG.
- 在IEEE-33系统上显示的电压违规风险的定量评估.
结论:
- 拟议的动态风险评估方法有效地解决了与GD的配电网络中的电压违规问题.
- 该方法提供了准确的概率建模和定量风险评估,对电网稳定性至关重要.
- 对IEEE-33系统的验证证实了拟议方法的准确性和实用性.
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