scholarly journals Research on the Application of SOP in Multi-Station Integrated System

2021 ◽  
Vol 9 ◽  
Author(s):  
Qunhai Huo ◽  
Wenyong Wang ◽  
Yanhong Yang ◽  
Ming Ma ◽  
Jingyuan Yin ◽  
...  
Keyword(s):  
Control Strategy ◽  
Large Scale ◽  
Operation Mode ◽  
Coordinated Control ◽  
Distribution Networks ◽  
Local System ◽  
Integrated System ◽  
Energy Management System ◽  
Efficient Operation ◽  
And Control

The current large-scale access to distributed power and the rapid growth of electric vehicles are seriously affecting the reliability of distribution networks. The new multi-station fusion technology based on the flexible interconnection of the distribution network can effectively solve this problem. In this study, we design a multi-purpose station and a multi-function device using a soft normally open point (SOP). A new multi-station integration topology and a coordinated control strategy are developed using an active power signal (APS) and an energy management system (EMS). The coordinated control strategy involves sending out the corresponding operation mode command after the EMS receives the superior instruction or the APS of the local system and coordinating the operation mode of the SOP, energy storage DC/DC converter, and photovoltaic DC/DC converter, thereby ensuring stable and efficient operation of the multi-station fusion system. Finally, two typical cases are simulated to verify the feasibility and effectiveness of the proposed topology and control strategy.

scholarly journals Modeling and Coordinated Control Strategy of Large Scale Grid-Connected Wind/Photovoltaic/Energy Storage Hybrid Energy Conversion System

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Lingguo Kong ◽  
Guowei Cai ◽  
Sidney Xue ◽  
Shaohua Li
Keyword(s):  
Energy Storage ◽  
Energy Conversion ◽  
Hybrid System ◽  
Control Strategy ◽  
Large Scale ◽  
Coordinated Control ◽  
Hybrid Energy ◽  
Conversion System ◽  
Energy Conversion System ◽  
Continuous Power

An AC-linked large scale wind/photovoltaic (PV)/energy storage (ES) hybrid energy conversion system for grid-connected application was proposed in this paper. Wind energy conversion system (WECS) and PV generation system are the primary power sources of the hybrid system. The ES system, including battery and fuel cell (FC), is used as a backup and a power regulation unit to ensure continuous power supply and to take care of the intermittent nature of wind and photovoltaic resources. Static synchronous compensator (STATCOM) is employed to support the AC-linked bus voltage and improve low voltage ride through (LVRT) capability of the proposed system. An overall power coordinated control strategy is designed to manage real-power and reactive-power flows among the different energy sources, the storage unit, and the STATCOM system in the hybrid system. A simulation case study carried out on Western System Coordinating Council (WSCC) 3-machine 9-bus test system for the large scale hybrid energy conversion system has been developed using the DIgSILENT/Power Factory software platform. The hybrid system performance under different scenarios has been verified by simulation studies using practical load demand profiles and real weather data.

Coordinated Control Strategy of Multiple DC Microgrids Containing Large-scale PV Systems

2021 ◽  
Author(s):  
Jiaxuan Yan ◽  
Feng Wang ◽  
Haoyu Wang ◽  
Jiachen Tian ◽  
Fang Zhuo
Keyword(s):  
Control Strategy ◽  
Large Scale ◽  
Coordinated Control ◽  
Dc Microgrids ◽  
Pv Systems

A New Method for Simultaneous Optimization of a Structure With Active and Passive Control Variables

2015 ◽  
Author(s):  
Ui-Jin Jung ◽  
Gyung-Jin Park
Keyword(s):  
Control Systems ◽  
Large Scale ◽  
Optimization Problem ◽  
Integrated System ◽  
Static Loads ◽  
Design Variables ◽  
Response Optimization ◽  
The Time Domain ◽  
Control Forces ◽  
And Control

An optimization method is proposed for the simultaneous design of structural and control systems using the equivalent static loads. The two structural and control systems are not completely independent and need to be considered in a unified fashion. Furthermore, an integrated system design is unavoidable to exhibit a good performance in the time domain. The analysis for the integrated system is conducted for the transient-state in a dynamic manner. The constraints for the structural and control systems are defined in the time domain as well. Therefore, a physically small scale problem in structural analysis easily becomes quite a large scale in an optimization problem. A new equivalent static loads (ESLs) method, which deals with the structural design variables as well as the control design variables, is proposed to solve physically large scale problems. A finite element dynamic equation is defined with control forces and a dynamic response optimization problem is formulated. Linear static response optimization is carried out with the ESLs. The control forces for the linear static response optimization are considered as design variables. Shape variables are utilized to handle the design variables for the control forces. Several examples are solved to validate the proposed method.

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