A droop line tracking control for multi-terminal VSC-HVDC transmission system

Irnawan, Roni; Silva, Filipe Miguel Faria da; Bak, Claus Leth; Lindefelt, Anna Margareta; Alefragkis, Alex

doi:10.1016/j.epsr.2019.106055

Cited by 12 publications

(8 citation statements)

References 10 publications

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“…According to the power frequency static characteristics of the generator set, the distribution of active and reactive power can meet the reasonable requirements. By using the inverse fine-tuning parameters, the inverter output voltage amplitude is reasonable and the frequency is stable, to realize the stable operation of DG parallel system of microgrid [10]. e frequency droop characteristic curve similar to the traditional generator is selected as the control mode of microsource, that is, the stable frequency and voltage are obtained by P-F droop control and q-u droop control, respectively.…”

Section: Principle Analysis Of the Traditional Droop Control Methodsmentioning

confidence: 99%

Research on Improved Droop Control Strategy of Microsource Inverter Based on Internet of Things

Dan

Zhang

Zheng

2021

Security and Communication Networks

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Microgrid connects the distributed power supply with the assistance of power electronic devices. Power electronic devices, especially in the inversion link, play a crucial role in the access of distributed power to microgrid. Whether in grid-connected mode or island mode, the control method of inverters is related to the stable operation of distributed power supply and plays an important role in the control strategy of microgrid. In this paper, by adding the drop control of controllable virtual impedance, the power coupling problem caused by resistive line impedance is reduced, and virtual impedance key points such as voltage feedback and frequency compensation are added. By optimizing the power reference value, the parallel operation stability of the control strategy is improved. The experimental results show that the proposed method improves not only the stability of the system and the power quality but also the accuracy of reactive power distribution.

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Section: Principle Analysis Of the Traditional Droop Control Methodsmentioning

confidence: 99%

Research on Improved Droop Control Strategy of Microsource Inverter Based on Internet of Things

Dan

Zhang

Zheng

2021

Security and Communication Networks

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“…The fault level can be per-unitized by dividing it by the rated DC power of LCC-HVDC. In this work, CFII is per-unitizing the CF fault level and is described in (24).…”

Section: Improved Immunity To Commutation Failurementioning

confidence: 99%

“…Other publications bring positive results in the performance improvement of the LCC-HVDC when a VSC-HVDC operates in their geographic proximity. Some papers discussed the VSC-HVDC control modes at length, mainly when operating within a multi-infeed system [22][23][24][25], in both transient and steady-state performance.…”

Section: Introductionmentioning

confidence: 99%

An Analysis on the VSC-HVDC Contribution for the Static Voltage Stability Margin and Effective Short Circuit Ratio Enhancement in Hybrid Multi-Infeed HVDC Systems

et al. 2023

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Over the years, high voltage transmission of large energy blocks over long distances has widely developed from the Line Commutated Converter (LCC) technology. However, the continuous expansion of the AC network and the increase in renewable energy penetration leads to the weakening of Electric Power Systems (EPS), causing operational problems for the LCC-HVDC. This paper evaluates the degree of contribution of the VSC-HVDC on the LCC-HVDC dynamic performance when the infeed is in a hybrid multi-infeed HVDC system. Through a steady-state mathematical framework, the new concept of Hybrid Power Voltage Interaction Factor (hPVIF) is proposed to assess the transient stability improvement of LCC. Additionally, this article introduces two key contributions from hPVIF: the complementary Improved Commutation Failure Immunity Index (iCFII), as a measure of the effective short circuit enhancement, as well as the apparent line length, which emulates the line lengths adjusting the power dispatch in the VSC-HVDC. PSCAD/EMTDCTM time-domain dynamic simulations are performed to assess the indexes, and the Matlab® software will be used to assist in mathematical operations.

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“…controlling the DC system can be achieved by controlling the DC voltage [8]. Therefore, with this approach, each non-islanded converter is operated in UdcCtrl and the IFC generates a specific DC voltage reference for the converter, such that the measured active power and DC voltage of the converter lies along a predefined droop curve [4], [13].…”

Section: Multi-vendor With Primary Control Interface (Ifc)mentioning

confidence: 99%

Enabling the Existing Point-to-Point VSC-HVDC Control for Multi-Terminal Operation

Irnawan

Silva

Bak

et al. 2019

2019 IEEE Power &Amp; Energy Society General Meeting (PESGM)

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Existing point-to-point (PtP) VSC-HVDC link's control is usually not prepared for a multi-terminal HVDC (MTDC) operation, e.g. the DC voltage droop control might not exist in the PtP link or active power control might not exist in the offshore wind farm (OWF) link. Therefore, an existing PtP link's converter control needs to be adjusted when this link is expanded into an MTDC system by interconnecting new converters into the existing system. If only one vendor is involved in the MTDC system, these MTDC specific controls can be applied directly since the vendor has the knowledge of the installed system. However, if several converter vendors are involved, they need to define a common requirement and adjust their converters to fulfil this requirement. Another option is to implement the MTDC specific control as an extension of the existing converter control. The converter control is operated in DC voltage control, which is commonly found in every PtP link, and the extension gives the appropriate DC voltage reference such that the converter operating point lies along a predefined characteristic. Simulation results show that both implementation approaches can be adopted when a PtP link is expanded into an MTDC system, although each of them has different advantages.

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A droop line tracking control for multi-terminal VSC-HVDC transmission system

Cited by 12 publications

References 10 publications

Research on Improved Droop Control Strategy of Microsource Inverter Based on Internet of Things

Research on Improved Droop Control Strategy of Microsource Inverter Based on Internet of Things

An Analysis on the VSC-HVDC Contribution for the Static Voltage Stability Margin and Effective Short Circuit Ratio Enhancement in Hybrid Multi-Infeed HVDC Systems

Enabling the Existing Point-to-Point VSC-HVDC Control for Multi-Terminal Operation

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