Multi-timescale distributed predictive control study of electric-hydrogen coupled integrated energy system based on hydrogen enriched compressed natural gas
Received date: 2024-11-12
Revised date: 2025-03-19
Online published: 2026-09-03
In the global energy transition,hydrogen enriched compressed natural gas is efficiently transported through existing pipelines,increasing the proportion of renewable,low- carbon,and green energy in the energy consumption structure. However,hydrogen source is affected by renewable energy generation for hydrogen production,resulting in fluctuations in the hydrogen blending ratio and posing challenges to the combined cooling,heating,and power system with hydrogen- doped natural gas as the input energy source at the endpoint. Therefore,this article proposes a multi time scale distributed predictive control method for hydrogen doped natural gas electrical hydrogen coupled energy systems.Firstly,an electric- hydrogen coupled cold,heat and power system based on hydrogen-doped natural gas was constructed for exploring the dynamic characteristics of the system during operation.Then, based on the differences in dynamic response characteristics of the system,three subsystems are divided into the electric side, cold side,and hot side to achieve more accurate control. Finally,simulation experiments were conducted to verify that the proposed multi time scale distributed predictive control algorithm can improve the speed of power side tracking while meeting the tracking accuracy of the three types of loads in the system,namely cooling,heating,and power.It can also achieve stable energy supply of the system in scenarios where the hydrogen doping ratio fluctuates.
This work is supported by National Natural Science Foundation of China(No.62373241),Shanghai Municipal Education Commission's Plan for Artificial Intelligence to Promote Scientific Research Paradigm Reform and Empower Discipline Leap(No.Z2024-115).
Huirong ZHAO , Yuting ZHOU , Daogang PENG . Multi-timescale distributed predictive control study of electric-hydrogen coupled integrated energy system based on hydrogen enriched compressed natural gas[J]. Electric Power, 2026 , 59(8) : 266 -278 . DOI: 10.11930/j.issn.1004-9649.202411041
表1 HCNG 电气氢耦合能源系统的典型工作参数Table 1 Typical operating parameters of HCNG electric- al hydrogen coupled energy system |
| 物理量 | 稳态参数 |
|---|---|
| 掺氢比 α/\% | 0.5 |
| 混氢天然气流速 Vmix /(m3⋅ s-1) | 0.0112 |
| 微燃机燃料量 mf/(kg⋅s-1) | 0.008 |
| 蓄氢罐放氢流速 mcold,CS /(mol⋅s-1) | 1.8113×10-4 |
| 燃料电池入口氢气流速 mH2/(mol⋅s-1) | 2.7×10-3 |
| 溴机冷剂阀开度 μhgr/\% | 18 |
| 蓄冷罐释冷流量 mcold,CS /(kg⋅s-1) | 0 |
| 微燃机回热阀开度 μreg % | 8 |
| 燃料电池入口空气流速 mair /(mol⋅s-1) | 3.6×10-2 |
| 用户侧用电功率 Nuser /kW | 66.27 |
| 供冷温度 Tcold /∘C | 7.663 |
| 供热温度 Thot /∘C | 78.48 |
表2 各控制器参数Table 2 Controller parameters |
| 变量 | MPC | DMPC | MTDMPC | |||
|---|---|---|---|---|---|---|
| 电力侧子系统 | ||||||
| 采样时刻 T | 3 | 3 | 1 | 4 | ||
| 预测时域 Np | 20 | |||||
| 控制时域 Nc | 1 | |||||
| 输出权重 Q | 50 | |||||
| 控制权重 R | 1 | |||||
| 精度指标 ε | 0.01 | |||||
| Umin | [0.004 | 0.9×10-3 | 8-10 | 0 | 12×10-3 ] | |
| Umax | [0.012 | 6×10-3 | 50 | 50 | 45×10-3] | |
| ΔUmin | -[0.004 | 0.3×10-3 | 0.1 | 0.11 | 3×10-4] | |
| ΔUmax | [0.004 | 0.3×10-3 | 0.1 | 0.11 | 3×10-4 ] | |
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