天然气管道压气站一键启停站控制技术

中国石油管道公司

压气站;一键启停;控制系统融合;无人站

Control technologies for the one-key start and stop of compressor stations of gas pipelines
WANG Zhensheng, DONG Hongjun, ZHANG Shibin, ZHAO Guohui, ZHANG Shu, YU Dong,JIA Lidong, WANG Ning

PetroChina Pipeline Company

compressor stations, one-key start and stop, control system integration, unattended station

备注

随着天然气管道生产管理模式的变革,压气站区域化管理作为一种先进管理理念得到了逐步推广,需要区域化管理、无人值守、远程调控等各类生产运行技术作为支撑,压气站一键启停站技术是其重要的技术基础。以盖州压气站为试点,通过对天然气管道压气站采用站场及压缩机工艺流程全自动化控制改造、控制系统配置优化、站控与压缩机控制系统深度融合、压缩机辅助系统整合等优化措施,具备了实现一键启停站的硬件基础。一键启停站从软件功能上分为一键启站和一键停站两部分:一键启站由状态反馈与报警检测、站内工艺流程自动导通、压缩空气系统自动启停、压缩机厂房风机自动分配、压缩机组一键启动、防喘控制与负荷分配的自动投用与退出6 个部分组成;结合压缩机组的3 种停机模式及其工艺需求,一键停站包括正常停站、多机停止、多机保压停机、全站ESD、多机泄压停机5 种自动停站方式。盖州压气站试点一键启停站控制技术的成功应用,表明中国压气站控制水平取得了较大进步,为后续压气站的建设和改造提供了工程经验和技术基础,同时也对长输液体管道的一键启停提供了借鉴。(图4,参[22]

With the reform of the production management mode of natural gas pipelines, the regional management of the compressor stations has been gradually promoted as an advanced management concept and needs various production and operation technologies to support it, such as regional management, unattended station and remote control. The one-key start and stop technology is the important technical foundation for the regional management of compressor station. In this paper, Gaizhou Compressor Station was taken as a pilot project. The hardware foundation to achieve one-key start-stop station was prepared by taking a series of optimization measures at the compressor station of gas pipeline, e.g. the fully automatic control and transformation of station and compressor process, the optimization of control system configuration, the in-depth integration of station control and compressor control system and the integration of compressor auxiliary system. From the perspective of software function, the one-key start-stop station is divided into one-key start station and one-key stop station. The one-key start is composed of 6 parts, i.e., state feedback and alarming detection, automatically conducting technological processes inside stations, self-start and stop of compressed air system, automatic distribution of air blowers in compressor workshop, one-key start of compressor set, and automatic commission and quit of anti-surge control and load distribution. Based on the 3 stop models of compressor set and their technical requirements, the one-key stop station is divided into 5 automatic stop modes, i.e., normal stop, multi-machine stop, multi-machine pressure maintaining stop, total-station ESD, and multi-machine pressure relief stop. The successful application of the pilot project at Gaizhou Compressor Station reveals the major advancement in the control level of compressor stations in China, and provides the experience and technical base for the construction and reconstruction of the subsequent compressor stations and the reference for the one-key start and stop of long-distance liquid pipelines. (4 Figures, 22 References)