Dynamic reduction of large-scale AC/DC power systems via retaining the trunk network

Weng, Hua; Xu, Zheng

doi:10.1016/j.ijepes.2012.07.002

Cited by 15 publications

(8 citation statements)

References 31 publications

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“…An earlier study [4] developed a reduction method of ILVN. However, the network that contains MLVN was divided into ILVNs by opening the weak connection lines between them, and was thus reduced by using the reduction method of ILVN.…”

Section: Dynamic Reduction Of Large Ac/dc Systemsmentioning

confidence: 99%

“…The developed reduction procedure retains the backbone network and important components such as HVDC links, whereas the local low‐voltage networks connected to 500 kV buses are reduced to simple networks composed of physical components. An earlier study [4] developed a reduction method of ILVN. However, the network that contains MLVN was divided into ILVNs by opening the weak connection lines between them, and was thus reduced by using the reduction method of ILVN.…”

Section: Dynamic Reduction Of Large Ac/dc Systemsmentioning

confidence: 99%

“…In this paper, a new dynamic reduction method for both ILVN and MLVN is proposed, as shown in Fig. 2, which is expected to overcome the inaccuracy resulting from disconnecting the weak connection lines in [4]. The proposed dynamic reduction procedure will be detailed in this section.…”

Section: Dynamic Reduction Of Large Ac/dc Systemsmentioning

confidence: 99%

“…On the other hand, to tackle the rapid increase of power demands and the uneven distribution of energy resources and loads, China has been constructing a nationwide ultra-high-voltage grid with 1000 kV alternating current (AC) networks and ± 800 kV direct current (DC) links [2]. Under these circumstances, it is necessary to provide an appropriate method to study the interaction characteristics between AC and DC systems in the electromagnetic transient (EMT) domain, including the commutation failure (especially concurrent commutation failure [3]) and the detailed recovery characteristics of HVDC systems after that [4]. Transient stability programs (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Reduction and modelling method of large‐scale alternating current/direct current power systems for electromagnetic transient simulation

Dong

Weng

Han

et al. 2014

IET Generation, Transmission & Distribution

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This study presents a systematic method which enables large-scale alternating current (AC)/direct current (DC) power systems to be modelled in the electromagnetic transient (EMT) domain. A physical equivalence based dynamic reduction technique is first proposed to reduce the AC/DC system, which retains the backbone network and important components such as high-voltage direct current (HVDC) links, whereas the low-voltage networks connected to the backbone network are reduced to simple networks composed of physical components. The reduction technique is based on the preservation of the support strength of the generators within the low-voltage networks to the backbone network (i.e. the short-circuit current contribution level), the power flows within the backbone network and the total generating output. Then, a technique to construct the EMT model of the reduced AC/DC systems is developed based on the data in the transient stability program format. The validity of the proposed method is verified with the case of South China power grid, which includes a multiinfeed HVDC system.

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Section: Dynamic Reduction Of Large Ac/dc Systemsmentioning

confidence: 99%

Section: Dynamic Reduction Of Large Ac/dc Systemsmentioning

confidence: 99%

Section: Dynamic Reduction Of Large Ac/dc Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduction and modelling method of large‐scale alternating current/direct current power systems for electromagnetic transient simulation

Dong

Weng

Han

et al. 2014

IET Generation, Transmission & Distribution

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ref. [7] have effectively harnessed dynamic Energies 2023, 16, 6934 2 of 20 equivalence to substantially decrease the scale of grids, resulting in significant time and resource savings. It is important to note that the primary focus of dynamic equivalence has traditionally been on synchronous generators and AC networks.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Equivalent Modeling of a Large Renewable Power Plant Using a Data-Driven Degree of Similarity Method

Liao,

Zhu,

et al. 2023

Energies

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This paper aims to develop a novel method for the dynamic equivalence of a renewable power plant, ultimately contributing to power system modeling and enhancing the integration of renewable energy sources. In order to address the challenge posed by clusters of renewable generation units during the equivalence process, the paper introduces the degree of similarity to assess similarity features under data. After leveraging the degree of similarity in conjunction with data-driven techniques, the proposed method efficiently entails dividing numerous units in a large-scale plant into distinct clusters. Additionally, the paper adopts practical algorithms to determine the parameters for each aggregated cluster and streamline the intricate collector network within the renewable power plant. The equivalent model of a renewable power plant is thereby conclusively derived. Comprehensive case studies are conducted within a practical offshore wind plant setting. These case studies are accompanied by simulations, highlighting the advantages and effectiveness of the proposed method, offering an accurate representation of the renewable power plant under diverse operating conditions.

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The engineering design and optimization of main circuit for hybrid active power filter

Shi-qi

Wang

et al. 2013

International Journal of Electrical Power & Energy Systems

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Dynamic reduction of large-scale AC/DC power systems via retaining the trunk network

Cited by 15 publications

References 31 publications

Reduction and modelling method of large‐scale alternating current/direct current power systems for electromagnetic transient simulation

Reduction and modelling method of large‐scale alternating current/direct current power systems for electromagnetic transient simulation

Dynamic Equivalent Modeling of a Large Renewable Power Plant Using a Data-Driven Degree of Similarity Method

The engineering design and optimization of main circuit for hybrid active power filter

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