Optimal control strategy for large-scale VRB energy storage auxiliary power system in peak shaving

2020 ◽  
Vol 120 ◽  
pp. 106007
Author(s):  
Junhui Li ◽  
Dacheng Hu ◽  
Gang Mu ◽  
Shuai Wang ◽  
Zheshen Zhang ◽  
...  
Keyword(s):  
Optimal Control ◽  
Energy Storage ◽  
Power System ◽  
Control Strategy ◽  
Large Scale ◽  
Optimal Control Strategy ◽  
Peak Shaving ◽  
Auxiliary Power

scholarly journals Energy Optimal Control Strategy of PHEV Based on PMP Algorithm

2017 ◽  
Vol 2017 ◽  
pp. 1-11
Author(s):  
Tiezhou Wu ◽  
Yi Ding ◽  
Yushan Xu
Keyword(s):  
Optimal Control ◽  
Energy Storage ◽  
Control Strategy ◽  
Hybrid Electric Vehicle ◽  
Storage System ◽  
Lithium Ion ◽  
Energy Storage System ◽  
Optimal Control Strategy ◽  
Hybrid Energy ◽  
Hybrid Energy Storage

Under the global voice of “energy saving” and the current boom in the development of energy storage technology at home and abroad, energy optimal control of the whole hybrid electric vehicle power system, as one of the core technologies of electric vehicles, is bound to become a hot target of “clean energy” vehicle development and research. This paper considers the constraints to the performance of energy storage system in Parallel Hybrid Electric Vehicle (PHEV), from which lithium-ion battery frequently charges/discharges, PHEV largely consumes energy of fuel, and their are difficulty in energy recovery and other issues in a single cycle; the research uses lithium-ion battery combined with super-capacitor (SC), which is hybrid energy storage system (Li-SC HESS), working together with internal combustion engine (ICE) to drive PHEV. Combined with PSO-PI controller and Li-SC HESS internal power limited management approach, the research proposes the PHEV energy optimal control strategy. It is based on revised Pontryagin’s minimum principle (PMP) algorithm, which establishes the PHEV vehicle simulation model through ADVISOR software and verifies the effectiveness and feasibility. Finally, the results show that the energy optimization control strategy can improve the instantaneity of tracking PHEV minimum fuel consumption track, implement energy saving, and prolong the life of lithium-ion batteries and thereby can improve hybrid energy storage system performance.

scholarly journals An adaptive under-frequency optimal control strategy for power system combined pumped storage and under-frequency load shedding

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261093
Author(s):  
Wentao Huang ◽  
Jinman Yu ◽  
Zhijun Yuan ◽  
Zhongwei He ◽  
Jun He ◽  
...  
Keyword(s):  
Optimal Control ◽  
Control Strategy ◽  
Large Scale ◽  
Power Grid ◽  
Load Shedding ◽  
Mode Transition ◽  
Optimal Model ◽  
Optimal Control Strategy ◽  
Pumped Storage ◽  
Storage Units

With the construction and development of ultra-high voltage (UHV) power grids, large-scale, long-distance power transmission has become common. A failure of the connecting line between the sending-end power grid and the receiving-end power grid will cause a large-scale power shortage and a frequency drop in the receiving-end power grid, which can result in the frequency collapse. Presently, under-frequency load shedding (UFLS) is adopted for solving the frequency control problem in emergency under-frequency conditions, which can easily cause large load losses. In this context, a frequency coordination optimal control strategy is proposed, which combines the mode transition of pumped storage units with UFLS to deal with emergency under-frequency problems. First, a mathematical model of the frequency dynamic response is established, which combines the mode transition of pumped storage units with UFLS based on a single-machine equivalent model. Then, an optimal model of the minimal area of the power system’s operation frequency trajectory is introduced, yielding the optimal frequency trajectory, and is used for obtaining the action frequency of the joint control strategy. A simulated annealing algorithm based on the perturbation analysis is proposed for solving the optimal model, and the optimal action frequency is obtained that satisfies the transient frequency offset safety constraint of the power system. Thus, the joint optimal control of the mode transition of the pumped storage units and UFLS is realized. Finally, the EPRI-36 bus system and China’s actual power grid are considered, for demonstrating the efficiency of the proposed strategy.

Market-oriented Optimal Control Strategy for an Integrated Energy Storage System and Wind Farm

2021 ◽  
Author(s):  
Sajad Esmaeili ◽  
Mohammad Amini ◽  
Amir Khorsandi ◽  
Seyed Hamid Fathi ◽  
Seyed Hossein Hosseinian ◽  
...  
Keyword(s):  
Optimal Control ◽  
Energy Storage ◽  
Control Strategy ◽  
Wind Farm ◽  
Storage System ◽  
Energy Storage System ◽  
Optimal Control Strategy

Study on Transient Stability of Circulation Economy Power System with High Penetration of Wind Power

2014 ◽  
Vol 1008-1009 ◽  
pp. 197-201
Author(s):  
Jian Ping Liu ◽  
Chun Liu ◽  
Ting Rui Lu ◽  
Hai Yan Tang ◽  
Xin Shou Tian ◽  
...  
Keyword(s):  
Optimal Control ◽  
Power System ◽  
Wind Turbine ◽  
Wind Power ◽  
Control Strategy ◽  
Transient Stability ◽  
Power Grid ◽  
Demonstration Project ◽  
Optimal Control Strategy ◽  
High Penetration

On the basic of deeply analyzing the characteristic of circulation economy power system with high penetration of wind power, and researching the model and transient characteristics of DFIG, the problem on transient stability of circulation economy power grid was given through simulating and analyzing the huolinhe circulation economy demonstration project on wind power consumed in the local in the paper. At last, an optimal control strategy of wind turbine based on circulation economy power system with high penetration of wind power was proposed.

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