Impact of wind farm and thyristor-switched series capacitors in voltage, active and reactive power in normal condition of network

Gheydi, Milad; Farhadi, Payam; Bagheri, Sajad; Hematizadeh, Atieh

doi:10.1109/atee.2017.7905065

Cited by 3 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9. Capacitor insertion at zero current voltage [12] Once the capacitor is in line, during the full half-cycle of the line current it will be charged to its maximum, and during the negative line current cycle it will be discharged to zero [16,17]. For our simulation model, a PMSG with 4 poles has been used, although PMSGs with more poles have been reported [18,19].…”

Section: Thyristor Switched Series Capacitor Rectifier (Tssc)mentioning

confidence: 99%

Comparison between Thyristor Switched Series Capacitors and Thyristor Switched Parallel Capacitors for wind power systems - A Simulation Study

Kalpaktsoglou

Tsiakalos

Pouros

et al. 2021

Wseas Transactions on Power Systems

View full text Add to dashboard Cite

This paper compares by simulation the Thyristor Switched Series Capacitors (TSSC) Circuit with the Thyristor Switched Parallel Capacitors (TSPC) Circuit for wind turbines. The well-known TSSC circuit belongs to the Controlled Series Capacitor (CSC) circuits that have been used in power transmission lines in order to correct the power factor and improve the performance of the electrical system. Such a circuit can be used in wind power systems to improve and maximize the efficiency of a wind turbine. A typical direct-drive wind power system employs variable speed electric generators, but the downside is that systems like that suffer from high inductive reactance. A TSSC circuit, therefore, is able to counteract for any reactive losses, and improve the power factor as well as the efficiency. The main issue with the TSSC circuit is the use of a high number of capacitors that must be connected in series, which can increase the cost and the maintenance of the controller. This paper introduces a novel circuit with different control technique than the TSSC that employs capacitors in parallel configuration. The novel TSPC circuit was simulated in PSPICE and the benefits as well as the drawbacks are described

show abstract

Section: Thyristor Switched Series Capacitor Rectifier (Tssc)mentioning

confidence: 99%

Comparison between Thyristor Switched Series Capacitors and Thyristor Switched Parallel Capacitors for wind power systems - A Simulation Study

Kalpaktsoglou

Tsiakalos

Pouros

et al. 2021

Wseas Transactions on Power Systems

View full text Add to dashboard Cite

show abstract

“…The consequent influences of generation intermittency are mainly frequency drops, transmission congestions and voltage fluctuations. Frequency drops are the main risk as they can lead to the disconnection of vulnerable generators due to the action of the Rate of Change of Frequency (RoCoF) and under frequency relays and even load shedding [1] [2] [3] [4]. In addition, WFs with conventional controls (i.e.…”

Section: Introductionmentioning

confidence: 99%

Provision of ancillary services by renewable hybrid generation in low frequency AC systems to the grid

Dong

Attya

Anaya‐Lara

2019

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

Wind energy high penetration levels in power systems lead to continuous power imbalance due to the intermittent nature of wind power. This paper proposes and investigates different methods to enable a hybrid generation system to provide frequency support to the grid. The hybrid generation is 100% renewable and composed of a wind farm and hydropower plant (HPP) of comparable generation capacities, and they are interconnected through a Low Frequency AC system (LFAC). The grid-tie is composed of a Voltage-Source Converter based High-Voltage, Direct Current (VSC-HVDC) junction that acts as frequency changer to maintain the grid nominal frequency. The HPP provides two types of ancillary services: wind power smoothing and frequency drops mitigation to avoid the use of thermal generation and battery energy storage. The paper offers different control methods to provide the two AS with improved coordination between the different controls in the hybrid generation system and complying with the common requirements of Grid Codes. The results obtained show that the frequency at the LFAC can tolerate mild drops to provide frequency support to the grid. The controllers' parameters have a clear impact on the frequency response at both systems. Simulation environment is MATLAB and Simulink.

show abstract

The Thyristor Switched Parallel Capacitors (TSPC) Converter for Power Factor Correction in Wind Power Systems

Kalpaktsoglou

Tsiakalos

Roumeliotis

2021

Wseas Transactions on Power Systems

View full text Add to dashboard Cite

This paper presents a novel power factor correction circuit suitable for low-speed electric generators usually used in direct drive wind turbines. The Thyristor Switched Parallel Capacitors (TSPC) circuit belongs to the Controlled Series Capacitor (CSC) circuits. Those circuits have been used in power transmission lines to correct the power factor and improve the performance of the electrical system. Such a circuit can be used in wind power systems to improve and maximize the efficiency of a wind turbine. A typical direct-drive wind power system employs variable speed electric generators, but the downside is that systems like that suffer from high and variable inductive reactance. In order to correct the power factor and to improve the efficiency of the system, the inductive reactance of the generator must become equal in value to the capacitive reactance. A TSPC circuit uses a set of capacitors, connected in series with anti-parallel thyristors. In every cycle, a controller triggers the appropriate thyristors, allowing the current to pass from the capacitor which then provides the system with the capacitive reactance that matches the generator’s inductor reactance. Therefore, the TSPC circuit is able to counteract for any reactive losses and improve the power factor, as well as, the efficiency. This paper introduces this novel power factor correction circuit that employs capacitors in parallel configuration. This circuit was simulated in PSPICE and was implemented and tested in the lab. Based on the simulation and implementation results, we discuss the benefits as well as the drawbacks of the proposed circuit

show abstract

Impact of wind farm and thyristor-switched series capacitors in voltage, active and reactive power in normal condition of network

Cited by 3 publications

References 9 publications

Comparison between Thyristor Switched Series Capacitors and Thyristor Switched Parallel Capacitors for wind power systems - A Simulation Study

Comparison between Thyristor Switched Series Capacitors and Thyristor Switched Parallel Capacitors for wind power systems - A Simulation Study

Provision of ancillary services by renewable hybrid generation in low frequency AC systems to the grid

The Thyristor Switched Parallel Capacitors (TSPC) Converter for Power Factor Correction in Wind Power Systems

Contact Info

Product

Resources

About