智能变电站预制式二次设备布置及优化建议

Layout and Optimization Suggestion of Prefabricated Secondary Equipment in Smart Substation

模块化智能变电站通过采用预制舱,实现二次设备模块化生产,由厂家集成安装、调试等,模块化配送,减少了现场二次接线以及设计、施工、调试工作量,缩短了建设周期,取得了较大的建设效益。但在工程实施过程中,面临舱体及屏柜重复防护处理、舱内空间利用率不高、舱内接线复杂、改扩建操作困难等问题。本文针对110kV智能变电站提出预制舱式二次组合机架结构方案:将多个分立部件固定在舱壁和舱底,形成整体机架式结构,安装方便,配置灵活,兼顾空间利用率和维护便利性;改进舱内屏柜模块布置方式和舱二次回路连接方式,实现智能变电站空间、功能、运维等的一体化设计。使变电站建设走向科技含量高、资源消耗低、环境污染少、精细化建造的道路。

Modular smart substation through the use of prefabricated modules to achieve the modular production of secondary equipment, greatly reduce the scene of the second wiring, reduce the design, construction, commissioning workload, and shorten the construction period. But in the process of project implementation, there are many problems, such as repetitive protective treatment of the cabin body and screen, low-utilization of cabin space, complexity of cabins wiring, renovation and expansion difficulties and so on. In this paper, a prefabricated secondary composite rack structure is proposed for 110 kV smart substation. Rack structure can be installed easily, flexible configuration and taking into account the space utilization and maintenance convenience. The scheme improves the connection mode of cabin secondary circuit by improving the layout of cabin module, and realize the integrated design of smart substation＇s space, function, operation and maintenance, which makes the construction of substation go towards a road of high technology content, low resource consumption, less environmental pollution and streamline construction.