通过对价值工程的原理和方法的介绍,结合目前市政工程项目的特点,从供电可靠性评估、电缆经济截面的选择分析及TN系统接地故障保护的整定三个方面对价值工程在市政电气设计领域的应用进行了探索,提出了一些具有应用价值的结论和措施。 Based on the introduction of principle and method of value engineering and the characteristics of current municipal engineering projects, this paper analyzes three aspects of value engineering in the field of municipal electrical design from three aspects: power supply reliability assessment, cable economic section selection analysis and TN system ground fault protection setting The application has been explored, put forward some conclusions and measures with application value.