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海上平台余压发电系统联合控制策略
Combined control strategy of residual pressure power generation in offshore platforms
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- DOI:
- 作者:
- 魏晓丰，郭 骏，张永佳，赵 准，徐明政
Wei Xiaofeng, Guo Jun, Zhang Yongjia, Zhao Zhun, Xu Mingzheng
- 作者单位:
- 中海油能源发展装备技术有限公司，天津 300456
- 关键词:
- 海上平台；余压回收；液力透平；Amesim；Matlab/Simulink；联合控制
offshore platform; residual pressure recovery; hydraulic turbine; Amesim; Matlab/Simulink; combined control
- 摘要:
- 海上平台生产系统余压回收及适配储能动态调控过程中，存在液力透平频繁启停工况。以某海上平台
为研究对象，设计含液力透平的3路并联余压回收系统，围绕透平水力特性、管路阻力特性、阀控节流特性耦
合机理，提出联合控制双阀协同调节方案。利用Amesim与Matlab/Simulink联合搭建仿真模型，采用联合控
制策略，实现透平启停过程中压力与流量稳定调控。仿真分析与现场试验结果表明：透平启动（切入）与停机
（切出）过程中管路总流量波动峰值分别为1 540 m³/h和1 515 m³/h，罐体液位波动处于安全范围；透平在1
500 r/min额定工况下稳定高效运行，出口压力为258.916 kPa，试验结果与仿真数据一致。设计方案与控制策
略有效保障了液力透平启停工况的运行稳定性，显著削弱了瞬态冲击对透平核心精密部件的损伤，解决了工况
切换下的流量与压力波动问题，确保海上平台生产系统连续、安全、稳定运行，可为海上平台余压回收节能改
造及储能技术应用提供工程实践参考与具体实施方案。
Frequent start-stop operations of hydraulic turbines exist during the dynamic regulation process of residual pressure recovery and matching energy storage for offshore platform production systems. Taking a typical offshore platform as the research object, a three way parallel residual pressure recovery system equipped with hydraulic turbines was designed. Focusing on the coupling mechanism of turbine hydraulic characteristics, pipeline resistance characteristics, and valve throttling characteristics, a cooperative regulation scheme with dual valves was proposed. A simulation model was established by combining Amesim and Matlab/Simulink. The combined control strategy was adopted to realize stable regulation of pressure and flow during turbine start-up and shutdown. The results of simulation analysis and field tests show that the peak fluctuation of total pipeline flow during turbine start-up (cut-in) and shutdown (cut-out) are 1 540 m³/h and 1 515 m³/h respectively,and the liquid level fluctuation of storage tanks remains within the safe range. The hydraulic turbine operates stably and efficiently at the rated operating condition point of 1 500 r/min, with an outlet pressure of 258.916 kPa. The test results are consistent with the simulation data. The proposed design scheme and control strategy effectively guarantee the operation stability of hydraulic turbines under start-stop conditions.The damage of transient impact to core precision components of turbines is significantly reduced. The fluctuation problems of flow and pressure under working condition switching are resolved. The continuous, safe, and stable operation of the offshore platform production system is ensured. The engineering practical references and specific implementation schemes are also provided for energy-saving renovation of residual pressure recovery and the application of energy storage technology on offshore platforms.