摘要
随着分布式能源（DE）的快速发展和广泛应用，其接入配电网成为必然趋势，但也给配电网带来了诸多影响。为保障配电网的安全稳定运行，本研究聚焦于分布式能源接入对配电网的影响及应对策略。基于此背景，以深入分析分布式能源接入后配电网在电压分布、电能质量、继电保护、网损等方面的变化为目的，采用理论分析与仿真计算相结合的方法展开研究。通过建立含分布式能源的配电网模型，利用电力系统分析软件进行大量仿真实验，获取了分布式能源不同接入位置、容量等因素下配电网各项性能指标的变化规律。结果表明，分布式能源的接入会使配电网电压分布发生改变，可能导致局部电压越限；会引发谐波畸变等电能质量问题；使原有继电保护配置面临选择性、速动性降低的风险；还会引起网损先减小后增大的现象。针对上述问题提出了一系列对策，如优化分布式能源接入位置和容量、采用先进的电能质量治理装置、改进继电保护原理等，这些对策可有效缓解分布式能源接入带来的负面影响，为分布式能源合理接入配电网提供了理论依据和技术支持，创新性地构建了分布式能源接入影响评估体系，为相关研究提供了新的思路。
关键词：分布式能源接入；配电网影响；电压分布
Abstract
With the rapid development and extensive application of distributed energy (DE), its integration into distribution networks has become an inevitable trend, yet it also introduces various impacts on these networks. To ensure the safe and stable operation of distribution networks, this study focuses on the effects of DE integration and proposes corresponding strategies. In this context, the research aims to thoroughly analyze changes in voltage distribution, power quality, relay protection, and network losses after DE integration by combining theoretical analysis with simulation calculations. Through the establishment of a distribution network model incorporating DE, extensive simulation experiments were conducted using power system analysis software to obtain the variation patterns of various performance indicators under different DE connection locations and capacities. The results indicate that DE integration alters the voltage distribution in distribution networks, potentially leading to local voltage limit violations; it can cause power quality issues such as harmonic distortion; it poses risks of reduced selectivity and speed in existing relay protection configurations; and it results in a phenomenon where network losses initially decrease but then increase. In response to these challenges, a series of countermeasures are proposed, including optimizing DE connection locations and capacities, employing advanced power quality management devices, and improving relay protection principles. These measures effectively mitigate the negative impacts of DE integration, providing theoretical basis and technical support for the rational integration of DE into distribution networks. Innovatively, this study constructs an evaluation system for the impacts of DE integration, offering new perspectives for related research.
Keywords：Distributed Energy Access; Distribution Network Impact; Voltage Distribution
目 录
摘要 I
Abstract II
一、绪论 1
(一) 分布式能源接入的背景与意义 1
(二) 国内外研究现状综述 1
(三) 研究方法与技术路线 2
二、分布式能源对配电网规划的影响 2
(一) 规划理念的转变需求 2
(二) 电源布局优化分析 3
(三) 配电网扩展规划挑战 4
三、分布式能源对配电网运行的影响 4
(一) 电压稳定性影响分析 4
(二) 功率潮流变化特征 5
(三) 电能质量改善对策 6
四、分布式能源接入的管理与控制策略 6
(一) 接入标准制定原则 6
(二) 智能化监控系统构建 7
(三) 运行管理模式创新 8
结 论 10
参考文献 11
随着分布式能源（DE）的快速发展和广泛应用，其接入配电网成为必然趋势，但也给配电网带来了诸多影响。为保障配电网的安全稳定运行，本研究聚焦于分布式能源接入对配电网的影响及应对策略。基于此背景，以深入分析分布式能源接入后配电网在电压分布、电能质量、继电保护、网损等方面的变化为目的，采用理论分析与仿真计算相结合的方法展开研究。通过建立含分布式能源的配电网模型，利用电力系统分析软件进行大量仿真实验，获取了分布式能源不同接入位置、容量等因素下配电网各项性能指标的变化规律。结果表明，分布式能源的接入会使配电网电压分布发生改变，可能导致局部电压越限；会引发谐波畸变等电能质量问题；使原有继电保护配置面临选择性、速动性降低的风险；还会引起网损先减小后增大的现象。针对上述问题提出了一系列对策，如优化分布式能源接入位置和容量、采用先进的电能质量治理装置、改进继电保护原理等，这些对策可有效缓解分布式能源接入带来的负面影响，为分布式能源合理接入配电网提供了理论依据和技术支持，创新性地构建了分布式能源接入影响评估体系，为相关研究提供了新的思路。
关键词：分布式能源接入；配电网影响；电压分布
Abstract
With the rapid development and extensive application of distributed energy (DE), its integration into distribution networks has become an inevitable trend, yet it also introduces various impacts on these networks. To ensure the safe and stable operation of distribution networks, this study focuses on the effects of DE integration and proposes corresponding strategies. In this context, the research aims to thoroughly analyze changes in voltage distribution, power quality, relay protection, and network losses after DE integration by combining theoretical analysis with simulation calculations. Through the establishment of a distribution network model incorporating DE, extensive simulation experiments were conducted using power system analysis software to obtain the variation patterns of various performance indicators under different DE connection locations and capacities. The results indicate that DE integration alters the voltage distribution in distribution networks, potentially leading to local voltage limit violations; it can cause power quality issues such as harmonic distortion; it poses risks of reduced selectivity and speed in existing relay protection configurations; and it results in a phenomenon where network losses initially decrease but then increase. In response to these challenges, a series of countermeasures are proposed, including optimizing DE connection locations and capacities, employing advanced power quality management devices, and improving relay protection principles. These measures effectively mitigate the negative impacts of DE integration, providing theoretical basis and technical support for the rational integration of DE into distribution networks. Innovatively, this study constructs an evaluation system for the impacts of DE integration, offering new perspectives for related research.
Keywords：Distributed Energy Access; Distribution Network Impact; Voltage Distribution
目 录
摘要 I
Abstract II
一、绪论 1
(一) 分布式能源接入的背景与意义 1
(二) 国内外研究现状综述 1
(三) 研究方法与技术路线 2
二、分布式能源对配电网规划的影响 2
(一) 规划理念的转变需求 2
(二) 电源布局优化分析 3
(三) 配电网扩展规划挑战 4
三、分布式能源对配电网运行的影响 4
(一) 电压稳定性影响分析 4
(二) 功率潮流变化特征 5
(三) 电能质量改善对策 6
四、分布式能源接入的管理与控制策略 6
(一) 接入标准制定原则 6
(二) 智能化监控系统构建 7
(三) 运行管理模式创新 8
结 论 10
参考文献 11
