scholarly journals Stability Assessment of Voltage Control Strategies for Smart Transformer-Fed Distribution Grid

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 185146-185157
Author(s):  
Zhi-Xiang Zou ◽  
Marco Liserre ◽  
Zheng Wang ◽  
Ming Cheng
Keyword(s):  
Control Strategies ◽  
Voltage Control ◽  
Stability Assessment ◽  
Distribution Grid

Medium and low voltage control strategies for a smart distribution grid

2016 ◽  
Author(s):  
Kamil Korotkiewicz ◽  
Philippe Steinbusch ◽  
Marcel Ludwig ◽  
Felix Dorsemagen ◽  
Marcus Stotzel ◽  
...  
Keyword(s):  
Low Voltage ◽  
Control Strategies ◽  
Voltage Control ◽  
Distribution Grid ◽  
Smart Distribution Grid

Assessment of distribution grid voltage control strategies in view of deployment

2014 ◽  
Author(s):  
Xue Han ◽  
Anna Magdalena Kosek ◽  
Daniel Esteban Morales Bondy ◽  
Henrik William Bindner ◽  
Shi You ◽  
...  
Keyword(s):  
Control Strategies ◽  
Voltage Control ◽  
Distribution Grid ◽  
Grid Voltage

scholarly journals Power Hardware-in-the-Loop: Response of Power Components in Real-Time Grid Simulation Environment

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 593
Author(s):  
Moiz Muhammad ◽  
Holger Behrends ◽  
Stefan Geißendörfer ◽  
Karsten von Maydell ◽  
Carsten Agert
Keyword(s):  
Real Time ◽  
Power Distribution ◽  
Control Strategies ◽  
Power Grid ◽  
Energy System ◽  
Hardware In The Loop ◽  
Distribution Grid ◽  
Compensation Strategy ◽  
Software Environment ◽  
The Real

With increasing changes in the contemporary energy system, it becomes essential to test the autonomous control strategies for distributed energy resources in a controlled environment to investigate power grid stability. Power hardware-in-the-loop (PHIL) concept is an efficient approach for such evaluations in which a virtually simulated power grid is interfaced to a real hardware device. This strongly coupled software-hardware system introduces obstacles that need attention for smooth operation of the laboratory setup to validate robust control algorithms for decentralized grids. This paper presents a novel methodology and its implementation to develop a test-bench for a real-time PHIL simulation of a typical power distribution grid to study the dynamic behavior of the real power components in connection with the simulated grid. The application of hybrid simulation in a single software environment is realized to model the power grid which obviates the need to simulate the complete grid with a lower discretized sample-time. As an outcome, an environment is established interconnecting the virtual model to the real-world devices. The inaccuracies linked to the power components are examined at length and consequently a suitable compensation strategy is devised to improve the performance of the hardware under test (HUT). Finally, the compensation strategy is also validated through a simulation scenario.

A Trust Region SQP Method for Coordinated Voltage Control in Smart Distribution Grid

2016 ◽  
Vol 7 (1) ◽  
pp. 381-391 ◽  
Author(s):  
Wanxing Sheng ◽  
Ke-yan Liu ◽  
Sheng Cheng ◽  
Xiaoli Meng ◽  
Wei Dai
Keyword(s):  
Trust Region ◽  
Voltage Control ◽  
Distribution Grid ◽  
Sqp Method ◽  
Smart Distribution Grid

scholarly journals The Stability Analysis of a Multi-Port Single-Phase Solid-State Transformer in the Electromagnetic Timescale

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2250 ◽  
Author(s):  
Rui Wang ◽  
Qiuye Sun ◽  
Qifu Cheng ◽  
Dazhong Ma
Keyword(s):  
Stability Analysis ◽  
Solid State ◽  
Single Phase ◽  
Control Strategies ◽  
Current Source ◽  
Practical Stability ◽  
Stability Assessment ◽  
Solid State Transformer ◽  
The Stability ◽  
Signal Sinusoïdal

This paper proposes an overall practical stability assessment for a multi-port single-phase solid-state transformer (MS3T) in the electromagnetic timescale. When multiple stable subsystems are combined into one MS3T, the newly formed MS3T has a certain possibility to be unstable. Thus, this paper discusses the stability assessment of the MS3T in detail. First and foremost, the structure of the MS3T and its three stage control strategies are proposed. Furthermore, the stability analysis of each of the MS3T’s subsystems is achieved through the closed loop transfer function of each subsystem, respectively, including an AC-DC front-end side converter, dual active bridge (DAB) with a high-frequency (HF) or medium-frequency (MF) transformer, and back-end side incorporating DC-AC and dc-dc converters. Furthermore, the practical impedance stability criterion in the electromagnetic timescale, which only requires two current sensors and one external high-bandwidth small-signal sinusoidal perturbation current source, is proposed by the Gershgorin theorem and Kirchhoff laws. Finally, the overall stability assessment, based on a modified impedance criterion for the MS3T is investigated. The overall practical stability assessment of the MS3T can be validated through extensive simulation and hardware results.

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