Optimal Allocation and Sizing of Synchronous Condensers in Weak Grids With Increased Penetration of Wind and Solar Farms

Hadavi, Sajjad; Mansour, Milad Zarif; Bahrani, Behrooz

doi:10.1109/jetcas.2021.3053554

Cited by 56 publications

(20 citation statements)

References 30 publications

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“…As a very costly solution for grid strength improvement, the capacity of SynCon should be fully utilized. The typical configuration schemes for SynCon are usually divided into centralized scheme (stalling at the collector bus) and distributed scheme (stalling at different buses connecting with collector bus), where the capacity of SynCon ranging from 10 to 100 Mvar per machine is modular [4]. In this paper, the capacity of each SynCon is taken as 50 Mvar, four SynCons are configured at bus 86,88,90,91 for distributed scheme, while three SynCons are installed at bus 92 for centralized scheme, and the SynCon parameters in the two schemes are listed in Table II.…”

Section: Validation and Discussionmentioning

confidence: 99%

“…un-damped voltage oscillations, excessive voltage deviations [1,2], several mechanisms have been proposed. They include installation of Static Compensators (STATCOMs), Synchronous Condensers (SynCons), and network reinforcement [3,4]. Among them, SynCons have regained popularity in recent years due to its high readiness in manufacturing, simplicity in control, and tendency to preserve the existing operational paradigm of power system, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…As to steady state operation, a SynCon can help regulation of frequency and voltage as well. As a result, there have been increasing research efforts on placing and sizing SynCons to enhance grid strength and frequency response in a power system [4,8,9]. It has been prevalently believed that collocation of SynCon is a trendy solution for large-scale REFs to mitigate a range of stability challenges.…”

Section: Introductionmentioning

confidence: 99%

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Rotor Angle Stability Analysis and Enhancement of Synchronous Condenser in Large-Scale Renewable Energy Farms

Xin¹,

liu²,

zheng³

et al. 2022

Preprint

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<p> Deployment of Synchronous Condensers (SynCons) has become one popular solution in accommodating large-scale renewable energy resource (RER) for existing power systems. In this paper, rotor angle instability of SynCon is investigated. To derive intuitive understandings and quantitative analysis, the swing equations of the equivalent synchronous generators (ESG) are derived. The Lyapunov’s direct method is employed to analyze the attraction domain for a typical benchmark system. Based on that, a rotor angle stability margin index is developed and an adaptive low voltage ride through (LVRT) control strategy is proposed for assessment and enhancement of rotor angle stability. The criterion and effectiveness are verified with on EMT simulations, respectively. </p>

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Section: Validation and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rotor Angle Stability Analysis and Enhancement of Synchronous Condenser in Large-Scale Renewable Energy Farms

Xin¹,

liu²,

zheng³

et al. 2022

Preprint

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“…The uses of the Battery Energy Storage System (BESS) to recharge during high power generation is a strategy that is proposed as a promising solution against the overvoltages limits [7, [47][48][49]. More costly solutions in order to get an increment in grid capacity were also proposed as well, such as the use of Synchronous Condensers (SynCons) [50], the up gradation in distribution transformers to an increased power rating, replacing old conductors with new with higher capacity or reinforcement of LV feeders by additional parallel conductors [43]. Another option used to mitigate the voltage increase would be through the extraction of reactive power at the PCC, a strategy that is not yet exploited in LV network, which would require the development of more sophisticated and low cost power electronic interfaces in order to distributed generators can generate and control reactive power [46].…”

Section: Correla On Index Correla On Index Correla On Index Correla O...mentioning

confidence: 99%

Analysis of Some Power Quality Parameters at the Points of Common Coupling of Photovoltaic Plants Based on Data Measured by Inverters

et al. 2022

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With the increasing implementation of renewable energies, the impact that this type of installation can have on the electricity supply grid is of great importance. In this context, the aim of this work is to analyse how the production and injection of electricity generated by a series of small photovoltaic (PV) installations influence some parameters of the electricity grid in the low-voltage (LV) distribution networks to which they are connected, by analysing the basic data provided by the inverters of these installations. The presence of a slight rise in the grid voltage values in the Point of Common Coupling (PCC) as the production of the PV plants increases has been verified, with maximum slopes between 0.95 and 0.00027 V/kW, but which do not result in voltage values close to the limits set by the regulations. In addition to assessing this impact, the results obtained made it possible to determine the hosting capacity that the networks into which these installations inject their energy would have for this type of installation so as not to have a detrimental effect on the voltage values of the grid. The possible influence of the production of PV installations on the voltage imbalance between phases or on the frequency of the grid has also been analysed in this work. Although the values recorded by the inverters have limitations in their measurements that do not make them valid for assessing events such as the presence of harmonics or flickers, they do allow a first analysis to be made of the influence of PV plant production on some grid parameters, without the need to incorporate additional measurement systems in these renewable installations. However, it is important to be aware of the limitations of the measurements of this equipment and, as far as possible, to choose inverter models that carry out this type of measurement as completely as possible.

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“…With the large-scale new energy resources and DC connected to a power grid, the proportion of traditional conventional synchronous units has gradually declined, and a large number of power electronic devices have been used in the power grid, resulting in the weakening of the inertia response and primary frequency modulation capability [5][6][7][8][9][10], so it is necessary to study and establish quantitative evaluation indexes of system-level frequency response capability to guarantee the stability of power grid frequency. References [11,12] analyze the virtual moment of inertia of wind power plants and propose the virtual inertia estimation method and active power control strategy of wind farms [11,12].…”

Section: Introductionmentioning

confidence: 99%

Study on Quantitative Evaluation Index of Power System Frequency Response Capability

2022

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Frequency stability is an important factor for the safety and stability of the power system operation. In a traditional power system, the operation stability is ensured by the inertia response, primary frequency modulation, and secondary frequency modulation. In recent years, in order to achieve the goal of carbon neutralization and carbon peaking, China has made great efforts in new energy development. With large-scale new energy connected to the power grid, the proportion of traditional conventional synchronous units has gradually declined. At the same time, a large number of power electronic devices have been used in the power grid, which led to the capability decline of the inertia response and primary frequency modulation. For example, the East China Power Grid has experienced a sharp frequency drop in such an environment. In order to solve the above problems, the operation principle and control mode of various new energy resources are analyzed in this paper. Moreover, the process and principle of power grid frequency response are studied and the evaluation index of frequency response capability is proposed. The research results can quantitatively evaluate the system inertia response and primary frequency modulation level and provides a judgment tool for dispatching operators and system planners.

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Optimal Allocation and Sizing of Synchronous Condensers in Weak Grids With Increased Penetration of Wind and Solar Farms

Cited by 56 publications

References 30 publications

Rotor Angle Stability Analysis and Enhancement of Synchronous Condenser in Large-Scale Renewable Energy Farms

Rotor Angle Stability Analysis and Enhancement of Synchronous Condenser in Large-Scale Renewable Energy Farms

Analysis of Some Power Quality Parameters at the Points of Common Coupling of Photovoltaic Plants Based on Data Measured by Inverters

Study on Quantitative Evaluation Index of Power System Frequency Response Capability

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