供水泵站自动化系统设计与谐波治理技术研究

Design of Automation System for Water Supply Pump Station and Research on Harmonic Suppression Technology

摘要

本文基于敦煌市沙州水厂加压泵房扩容改造这一重大民生工程，针对老泵站设备陈旧、能耗高、多水源地数据孤岛严重等痛点，由笔者作为项目技术负责人主导了全厂自动化系统的升级改造。本文详细阐述了笔者如何设计基于西门子S7-1500系列PLC的冗余控制系统，构建覆盖沙州、七里镇、沙枣墩三厂的光纤环网，并创新性地在低压配电系统中引入7%电抗率的有源滤波与无功补偿技术，解决了变频器群控带来的电网谐波污染问题。通过本次技改，实现了泵站“无人值班、少人值守”的现代化管理模式，年综合节电率达15%以上。本研究为西北干旱地区长距离供水泵站的自动化升级提供了可复制的技术范本。

Abstract

Based on the major livelihood project of the expansion and renovation of the booster pump room at the Shazhou Water Plant in Dunhuang City, this article addresses the pain points of outdated equipment, high energy consumption, and severe data isolation in multiple water sources at the old pump station. The author, as the project technical leader, led the upgrade and renovation of the automation system for the entire plant. This article details how the author designed a redundant control system based on the Siemens S7-1500 series PLC, constructed a fiber optic ring network covering the three plants in Shazhou, Qilizhen, and Shazao Dun, and innovatively introduced active filtering and reactive power compensation technology with a 7% reactance rate into the low-voltage power distribution system, solving the problem of harmonic pollution in the power grid caused by frequency converter group control. Through this technological transformation, a modern management model of “unmanned duty and less personnel on duty” was achieved at the pump station, with an annual comprehensive electricity saving rate of over 15%. This study provides a replicable technical template for the automation upgrade of long-distance water supply pump stations in arid areas of Northwest China.

关键词

泵站自动化 / SCADA系统 / PLC冗余控制 / 谐波治理 / 多水厂集控

Key words

pump station automation / SCADA system / PLC redundant control / harmonic suppression / centralized control of multiple water plants

参考文献

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