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| DOI：10.1186/s41601-023-00286-x |
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| 基金项目:The author at KFUPM acknowledge the Interdisciplinary Research Center for renewable Energy and Power Systems for the support received under grant no. EC221008. |
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| Designing of robust frequency stabilization using optimized MPC-(1+PIDN) controller for high order interconnected renewable energy based power systems |
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Muhammad Majid Gulzar
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| Abstract: |
| The challenge of controlling frequency becomes greater as the complexity of a power network increases. The stability of a power system is highly dependent upon the robustness of the controller. This paper presents automatic generation control (AGC) of a four-area interconnected power system along with integrated renewable energy sources of PV and wind energy. The designed model is a challenge given the increased penetration levels of PV and wind along with a thermal-hydropower system. The addition of a hydropower system as a fourth type results in the pole of the open loop system of the hydropower system being located at the right half side of the s-plan. This demands a robust control. A novel MPC-(1 + PIDN) is designed for high-order interconnected areas (HOIA) to stabilize the frequency in a robust way. The salp swarm algorithm is adopted to optimize the parameters of the PIDN controller. The performance of the proposed controller under HOIA is tested in a unbalanced load environment with uncertainty in the power system. The proposed controller can effectively handle the frequency disruption by stabilizing it in 0.86s
for Area-1, 1.08s
for Area-2, 0.81s
for Area-3, and 0.84s
for Area-4 with an average time of 0.89s
for all the areas, whereas the average time for GWO: PI-PD, MPC/PI and GA-PI is 3.48s
, 10.36s
and 18.47s
, respectively. The results demonstrate the effectiveness of the controller when compared to other controllers. |
| Key words: MPC-(1 + PID) controller,
Salp swarm algorithm,
High order interconnected area,
Automatic generation control |
