Harmonic and Imbalance Compensation in Grid-Forming VSC

Barragán-Villarejo, Manuel; Mauricio, J.; Olives-Camps, Juan Carlos; Matas-Díaz, Francisco Jesús; García-López, Francisco de Paula; Ortega, José María Maza

doi:10.1109/icit45562.2020.9067175

Cited by 9 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These loads add distortion to the grid current and cause distortion in the grid voltage. Another problem that the grid faces is the reduction in the power factor, which is the result of the drawing power by large inductive loads and imbalance in the three phase distribution grid can cause a neutral current to follow through the neutral conductor [80,81]. An integration of power electronic-based renewable energy with the grid increases harmonic distortions in the system.…”

Section: Control Methods For Harmonic Mitigationmentioning

confidence: 99%

State of the Art of the Techniques for Grid Forming Inverters to Solve the Challenges of Renewable Rich Power Grids

et al. 2022

View full text Add to dashboard Cite

To mitigate the fast-growing demand of electrical energy, the use of renewable energy resources, e.g., solar and wind, can offer an environmentally friendly and sustainable solution. Due to their intermittent nature, the grid connected operation of renewable energy resources provides a better performance compared to the standalone operation. However, the massive penetration of power electronic inverter/converter-interfaced renewable resources in power systems introduces new issues, such as voltage and frequency instabilities, because of their inherent low inertia properties. As a consequence, these issues may lead to serious problems, such as system blackouts. Therefore, there is an immediate demand to solve these new issues and ensure the normal performance of the power system with the large penetration of renewable energy resources. To achieve this, grid connected inverters/converters are designed to address these problems and behave as synchronous generators, which is possible with grid forming (GFM) inverters/converters concepts. This paper reviews the recent advancement of GFM converters for solving emerging issues related to the renewable rich power grids. It also provides a comprehensive review on frequency deviations and power system stability issues in low-inertia systems and recent advancements in control methods for harmonic mitigation. It is expected that this paper will help the research community to enhance the technology further to solve the challenges in renewable rich power grids.

show abstract

Section: Control Methods For Harmonic Mitigationmentioning

confidence: 99%

State of the Art of the Techniques for Grid Forming Inverters to Solve the Challenges of Renewable Rich Power Grids

et al. 2022

View full text Add to dashboard Cite

show abstract

“…According to [31], the grid voltage time constant

\tau _v

, used to calculate voltage control proportional gain

k_{p, v}

, is given by:

\begin{equation} \tau _v = \frac{\sqrt {(\tan (M_p - \pi ))^2 + 1}}{\omega _c \tan ((M_p - \pi )}, \end{equation}

where the phase margin (

M_p

) is usually adopted at 60° and

\omega _c

is equivalent to 20% or more of the maximum frequency equivalent to the harmonic to be compensated.…”

Section: Methodsmentioning

confidence: 99%

“…The process is similar to the quadrature axis [27]. According to [31] the variable can be controlled as a stationary characteristic and a P controller can be used to ensure that the synthesized current tracks the reference signal. The transfer function of the controller P is represented by

C_{vd} (s)

.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

An application of four‐wire grid‐forming power inverter in unbalanced distribution network

Döhler

Mota

Archetti

et al. 2022

IET Generation Trans & Dist

View full text Add to dashboard Cite

The modelling of a three‐phase four‐leg four‐wire grid‐forming inverter in a low voltage distribution system 18‐bus European Cigré under unbalanced conditions in an autonomous distribution network is presented. The case study has two types of inverters control strategy: (i) grid‐forming to supply all the system demand in the interval of the intentional supply interruption and (ii) grid‐following to integrate photovoltaic renewable energy resources into power systems. The model suggests a control scheme with two loops: An inner current loop with a proportional‐integral controller and an outer voltage loop with a proportional controller, both in the synchronous reference frame (dq0), in which dq‐axis are decomposed in positive and negative sequences. Simulation results, carried out using the PSCAD software, showed the effectiveness of the suggested control strategy with smooth synchronization where the grid‐forming inverter was able to form a network with an unbalanced degree lower than 2%, sinusoidal voltage and frequency within standard limits 49.5–50.5 Hz.

show abstract

“…1 and then, they transformed into the abc frame (𝜂 𝑎𝑏𝑐 ). The proportional and integral gains of the current PI controllers are specified from the time constant of this control, which is 𝜏 𝑖 = 0.25𝑚𝑠, as 𝑲 𝑝,𝑖 = 𝐿 𝑡 𝜏 𝑖 and 𝑲 𝑖,𝑖 = 𝑅 𝑡 𝜏 𝑖 respectively, according to [22].…”

Section: Harmonics Control Algorithmmentioning

confidence: 99%

Evaluation of Decentralized Voltage Harmonic Mitigation through DRES converter active filtering capability

Malamaki¹,

Tzouvaras²,

Barragán-Villarejo³

et al. 2021

IET Conf. Proc.

View full text Add to dashboard Cite

The increased penetration of Converter-Interfaced Distributed Renewable Energy Sources (CI-DRES) has posed power quality challenges into the distribution system. In the future CI-DRES may have the responsibility to cope simultaneously with several issues. One function that has already been presented in the literature, but has not been included yet in Standards, is the operation of the DRES converters as active harmonic filters. This paper firstly develops an active filtering control for the CI-DRES, taking into account its thermal limit. This parameter is important, since DRES are already prescribed by Standards to participate in the voltage regulation process by providing reactive power. If the CI-DRES operates also as active filter, it may exceed its thermal capacity. Secondly, the decentralized operation of CI-DRES is evaluated in the CIGRE Benchmark LV distribution system by considering several scenarios of DRES/Non-linear loads penetration and mixture. Time-domain (TD) simulations are carried out in PowerSim Software to demonstrate the contribution of each CI-DRES in the active filtering process. The derived conclusions will serve as a basis for the development of a new coordinated algorithm, so as the CI-DRES can mitigate properly voltage harmonic distortion (HD) in the most efficient techno-economic way. In this way, the active filtering can be treated as a new ancillary service to be introduced in respective markets. * are summed to the harmonic dq reference currents, 𝒊 𝑑𝑞,ℎ * , (derived in Fig. 2) so as to generate the total reference currents at the PCC, 𝒊 𝑠𝑑,𝑞 *

show abstract

Harmonic and Imbalance Compensation in Grid-Forming VSC

Cited by 9 publications

References 13 publications

State of the Art of the Techniques for Grid Forming Inverters to Solve the Challenges of Renewable Rich Power Grids

State of the Art of the Techniques for Grid Forming Inverters to Solve the Challenges of Renewable Rich Power Grids

An application of four‐wire grid‐forming power inverter in unbalanced distribution network

Evaluation of Decentralized Voltage Harmonic Mitigation through DRES converter active filtering capability

Contact Info

Product

Resources

About