Stability problems of PV inverter in weak grid: a review

Zhang, Qianjin; Mao, Mingxuan; Guo, Ke; Zhou, Lin; Xie, Bin

doi:10.1049/iet-pel.2019.1049

Cited by 38 publications

(28 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, it produces discrete time interval outputs, where system conditions are counted in specific discrete periods using a fixed time phase, and outputs are generated at discrete time intervals. In realtime simulation of power systems, digital real-time simulation is used to achieve the desired results [35]. For example, the use of electromagnetic temporal type approaches uses digital computer time domain solutions to achieve the desired results [36].…”

Section: Literature Reviewmentioning

confidence: 99%

Researching a Simulation of Real-Time Nonlinear Dynamical Systems for Digital Power Grids in Massive IoT

Zhang¹,

Zhao

Wang

et al. 2022

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

“Digital real-time simulation” refers to the replication of output waveforms with the required accuracy, which duplicates the behavior of a real power system that is being simulated. A variety of problems relating to the functioning of power systems can be effectively solved using real-time simulators. Fortunately, modern state-of-the-art technological advancements have solved the energy problems. When used as a real-time application of electromagnetic transient-type simulation, the real-time digital simulator takes advantage of the traveling wave properties of cables and transmission lines in conjunction with a parallel processing platform. Power Control (PC), Hardware Under Test (HUT), Time Scale of Events (TSE), and Control Action (CA) are used as independent variables and the Real-Time Dynamic Simulation (RTDS) has been used as dependent variables. The objective of study improves the energy production in Digital Power Grids using Real-time Dynamic Nonlinear System Simulation System. The data was collected by using questionnaires based on 5-Likert Scale. The data has been analyzed using smart PLS 3. The questionnaire were filled from 50 technicians of power grids. The results are that Real-Time Dynamic Simulation improves the energy production in Digital Power Grids.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Researching a Simulation of Real-Time Nonlinear Dynamical Systems for Digital Power Grids in Massive IoT

Zhang¹,

Zhao

Wang

et al. 2022

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

show abstract

“…And the actual measurement data is used to characterize the load [36]. In addition to being noteworthy because it has the ability to serve as the first step in harmonizing steady-state and transient models, it also has the potential to unify power system assessments under a unified framework [37].…”

Section: Literature Reviewmentioning

confidence: 99%

Digital Modeling System for Dynamic Nonlinear Systems of Power Equipment in Digital Grids and 5G

Guo

Yan

et al. 2022

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

The digital power grid system is used to maintain stability and to provide a continuous supply of electrical energy to consumers in the event of a power outage or other interruption of service. This is due to their ability to respond quickly in the event of an interruption. However, unpredictable failures and cascading accidents occur regularly, resulting in a blackout that can cause significant disruption to modern life. Furthermore, the rotor angle behavior can indicate the overall synchronism and stability of the complete digital power grid system. The digital dynamic nonlinear system operators can profit economically and technically from implementing protection measures that are appropriately designed and implemented. This study has utilized data transitions over digital power grids, connectivity used in digital power grids, power quality, network congestion, and stability issues as independent variables. However, the digital dynamic nonlinear system has been used as the dependent variable. The data was collected using questionnaires, and the data was collected from various digital power grids and solar system users. The collected data was analyzed by using SEM PLS 3. The reliability of the collected data was tested by Cronbach’s alpha and the values above 0.7. The results indicated that there are significant values between the variables.

show abstract

“…It is noteworthy that as inverters become an even more massive technology, they are influencing an increasing penetration of renewables, each one continuously seeking the maximum power point tracking (MPPT) for delivery to the system. Thus, as the proportion of sources that provide inertia and damping in distribution systems decreases, renewables and inverters operating at MPPT could have an even greater impact on a frequency event [8]. With both the present and the future-when power generation could have an even higher proportion of renewable sources connected through inverters-in mind, it has been proposed that power converters could emulate the behavior of synchronous generators, thus providing frequency support [3], [5], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

A Predictive Control Scheme for a Single-Phase Grid-Supporting Quasi-Z-Source Inverter and Its Integration With a Frequency Support Strategy

Baier

Villarroel²,

Torres

et al. 2023

IEEE Access

View full text Add to dashboard Cite

Small grid-connected inverters are not friendly to the electrical grid, in the sense they do not take any action to support the grid when contingency events occur. For example, because of their relatively low power capacity, small grid-connected inverters are not designed to provide dynamic frequency support to the grid. On the other hand, it is well known that microgrids and weak grids including distributed generation would benefit significantly if all of the grid-connected converters could support and help against grid frequency disturbances. Within the family of small grid-connected converters, single-phase quasi-Z-source inverters (QZSI) have become an attractive topology, because they represent a reliable and economical alternative, and can be very efficient in applications that demand small or medium powers. However, a major disadvantage is that the control strategy must manage both direct current and alternating current variables through the same group of switches. The latter is a challenging task when implementing predictive control schemes. This paper proposes a finite control set model predictive control (FCS-MPC) strategy for a single-phase grid-supporting QZSI. The proposed predictive scheme can be easily integrated with a complementary control block to provide grid frequency support. Experimental results show evidence of the inverter operating under the proposed control strategy and providing grid frequency support, which demonstrates the feasibility of the proposal.

show abstract

Stability problems of PV inverter in weak grid: a review

Cited by 38 publications

References 83 publications

Researching a Simulation of Real-Time Nonlinear Dynamical Systems for Digital Power Grids in Massive IoT

Researching a Simulation of Real-Time Nonlinear Dynamical Systems for Digital Power Grids in Massive IoT

Digital Modeling System for Dynamic Nonlinear Systems of Power Equipment in Digital Grids and 5G

A Predictive Control Scheme for a Single-Phase Grid-Supporting Quasi-Z-Source Inverter and Its Integration With a Frequency Support Strategy

Contact Info

Product

Resources

About