A Robust Exciter Controller Design for Synchronous Condensers in Weak Grids

Hadavi, Sajjad; Rathnayake, Dayan B.; Jayasinghe, Shantha Gamini; Mehrizi‐Sani, Ali; Bahrani, Behrooz

doi:10.1109/tpwrs.2021.3110504

Cited by 9 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a general rule, the SCR is used in RERs to classify weak grids. Systems with SCRs less than three are considered weak grids, and systems with SCRs less than two are considered very weak grids [13], [36]. As introduced in [13],the SCR at the PoC is calculated as:…”

Section: A Weak Grid Definitionmentioning

confidence: 99%

“…The system setup shown in Figure 3 is perturbed with a perturbation signal by different frequency range to identify the dq-domain impedance in different frequency. In model identification and impedance identification for power system studies, the injection of random signals such as PRBS is utilized widely [13], [32]. A linear feedback shift register is utilized to create a repetitive and discrete signal for the PRBS signal.…”

Section: A Prbs Identificationmentioning

confidence: 99%

“…The PRBS parameters used in this paper are given in Table II. Once the measured data of output signal (V m d ,V m q ,I m d , and I m q ) related to the PRBS perturbations on the d or q axis are retrieved, the frequency response data (FRD) of the black-boxed model are identified [13].…”

Section: A Prbs Identificationmentioning

confidence: 99%

“…The Synchronous Condenser (SynCon) is one of the possible solutions to enhance the system strength, inertia, and stability with the high penetration of IBRs [7], [13]- [15]. Generally, SynCons are utilized to provide a fault contribution and increase the SCR in the system.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Quantifying Stability in Inverter-based Weak Grids in the Presence of Synchronous Condensers

Hadavi

Mehrizi‐Sani

Bahrani

2023

Preprint

View full text Add to dashboard Cite

The high penetration of renewable energy resources integrated via power electronic inverters in weak and low-inertia grids is introducing new challenges to power systems. Inverter-based resources (IBRs) do not have native inertia similar to fossil-fuel-based generators and can cause sustained oscillations and instability. Synchronous Condensers (SynCons) are considered as a reborn technology to provide a solution for system strengthening and inertia supporting in IBR-dominant power systems. Although SynCons are a well-known technology, additional assessment for analyzing the stability of a weak grid with a high penetration of renewable resources in the presence of SynCons is required. This paper proposes a quantitative index for the stability analysis of a system, which includes black-boxed IBRs and SynCon. The proposed index is stemmed from impedance-based stability analysis. In this paper, the impact of a SynCon on the proposed stability index is evaluated in a single-machine infinite-bus system, and its accuracy is also verified in an IEEE 39-bus system. Additionally, the findings are verified using time-domain simulation tests in PSCAD/EMTDC software.

show abstract

Section: A Weak Grid Definitionmentioning

confidence: 99%

Section: A Prbs Identificationmentioning

confidence: 99%

Section: A Prbs Identificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantifying Stability in Inverter-based Weak Grids in the Presence of Synchronous Condensers

Hadavi

Mehrizi‐Sani

Bahrani

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…With the development of measurement and control technology, electrical drives have begun to use the rotor position detection method without a mechanical position sensor. It reduces the workload of on-site maintenance and increases the requirements for system measurement accuracy and control algorithm reliability [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

High-Reliability Rotor Position Detection Method for Sensorless Control of Synchronous Condenser

Shi,

Liu,

et al. 2023

WEVJ

View full text Add to dashboard Cite

Static frequency converters (SFCs) are very important for starting the connection of synchronous capacitors to the power grid, which is beneficial for ensuring the impact of electric vehicle connection on the inertia of the power grid. In the traditional sensorless initial rotor position detection method, the signal-to-noise ratio of the induced voltage at the machine terminal is small, making it difficult to accurately extract the rotor position. In this study, a reliable initial position detection method for a sensorless-controlled synchronous machine drive is proposed. A step excitation voltage was applied to the excitation circuit before the motor was started, and the three-phase induction voltage at the terminals was sampled in real time. The sampling signal was processed in two ways: digital filter processing and stator flux calculation. The accuracy of the initial rotor position is determined by comparing the differences between the two results. This algorithm does not depend on additional hardware circuits and has fewer setting parameters; therefore, it is easy to apply in engineering applications. Finally, a comparative experiment was conducted using a real-time digital system (RTDS) to verify the feasibility and effectiveness of the proposed method. The proposed rotor position detection method can effectively improve the detection reliability and ensure the start-up reliability of SFCS.

show abstract

The Effect of Damper on the Dynamic Performance of Energy Storage Synchronous Condenser for Active Power

Li,

Palanas,

Chen

et al. 2023

2023 26th International Conference on Electrical Machines and Systems (ICEMS)

View full text Add to dashboard Cite

A Robust Exciter Controller Design for Synchronous Condensers in Weak Grids

Cited by 9 publications

References 34 publications

Quantifying Stability in Inverter-based Weak Grids in the Presence of Synchronous Condensers

Quantifying Stability in Inverter-based Weak Grids in the Presence of Synchronous Condensers

High-Reliability Rotor Position Detection Method for Sensorless Control of Synchronous Condenser

The Effect of Damper on the Dynamic Performance of Energy Storage Synchronous Condenser for Active Power

Contact Info

Product

Resources

About