基于负荷密度比较法的中心城区典型功能区中压配电网接线方式研究

配电网接线方式在中压配电网的评估、改造和规划中十分重要。从可靠性、经济性、运行特性和电压质量等方面对中心城区中压配电网常用的接线方式进行了定性、定量分析和比较，根据不同的用户功能特性，使用不同的负荷密度区间数表达式，基于负荷密度比较方法对中压配电网常用的7种配电网接线方式进行了可靠性和技术经济性评价，给出了负荷密度不同时选择最佳接线方式的方法。上海市中心城区的算例结果验证了文中方法的正确性和合理性。

Connection Modes for Medium Voltage Distribution Networks Located in Typical Functional District of Central Urban Area Based on Load Desity Comparison

Connection mode is the focus in the evaluation, renovation and planning of medium voltage distribution networks. The commonly used connection modes for medium voltage distribution networks located in central urban area are compared and analyzed quantitatively and qualitatively in reliability, economy, operation condition and voltage quality. According to different functional properties of consumers, different load density interval numbers are adopted, and the method to choose optimal connection modes under different load densities is given. Results of calculation example of central urban area in Shanghai validate the correctness and reasonableness of the proposed load density comparison method.