A new protection scheme for transmission line of three-terminal hybrid HVDC system

Zhang, Dahai; Wu, Chuanjian; He, Jinghan; Liang, Chenguang

doi:10.1016/j.ijepes.2021.107446

Cited by 13 publications

(17 citation statements)

References 14 publications

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“…L 1 and L 2 represent the current‐limiting inductance on both sides of the line. When an internal fault occurs at F 1 , the direction of the initial traveling wave [18] is shown in Figure 2.

{u_{Mb}}

{i_{M{\rm{b}}}}

{u_{Nb}}

{i_{Nb}}

represent backward traveling wave voltage and current, respectively.…”

Section: Basic Principlementioning

confidence: 99%

“…(1) The amplitude of

{Z_{C1}}

and

{Z_{C2}}

: First, analyse the line wave impedance and calculate it using detailed parameters of an actual project [19]. Analysing the distribution parameters of the line, the amplitude‐frequency characteristics of the line wave resistance can be obtained as shown in Table 1 [18]. Therefore, the line mode component is more suitable for traveling wave protection.…”

Section: Basic Principlementioning

confidence: 99%

“…The value of current limiting inductance commonly used in VSC‐MTDC systems is 100–150 mH. The equation for calculating the impedance of capacitance and inductance is as follows [18]:

\begin{equation}\left\{ \def\eqcellsep{&}\begin{array}{l} {X_c} = \dfrac{1}{{2\pi fC}}\\[8pt] {X_L} = 2\pi fL \end{array} \right.\end{equation}

…”

Section: Basic Principlementioning

confidence: 99%

“…The value of current limiting inductance commonly used in VSC-MTDC systems is 100-150 mH. The equation for calculating the impedance of capacitance and inductance is as follows [18]:…”

Section: Analysis Of Virtual Traveling Wave Power Ratiomentioning

confidence: 99%

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VSC‐MTDC system integrity protection scheme: Backup protection based on virtual traveling wave power

Zou

Xiang

Weiping

2022

IET Generation Trans & Dist

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Flexible DC technology is widely used in long‐distance and large‐capacity transmission and plays a very important role in realizing the optimal allocation of cross‐regional power resources. However, the protection technology of flexible DC systems is not yet mature. The current differential protection is susceptible to the influence of distributed capacitance, which reduces the reliability of the backup protection of the voltage source converter‐based multi‐terminal DC (VSC‐MTDC) system. To enhance the reliability of DC protection, a new scheme based on virtual traveling active wave power is proposed. First, the concept of virtual traveling wave power is innovatively proposed. Subsequently, the fault characteristics and calculation method of the virtual traveling wave power are provided. Accordingly, a protection scheme based on virtual traveling wave power is proposed and the overall process is given. Finally, a typical VSC‐MTDC system is used to verify the reliability of the scheme.

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“…L 1 and L 2 represent the current‐limiting inductance on both sides of the line. When an internal fault occurs at F 1 , the direction of the initial traveling wave [18] is shown in Figure 2.

{u_{Mb}}

{i_{M{\rm{b}}}}

{u_{Nb}}

{i_{Nb}}

represent backward traveling wave voltage and current, respectively.…”

Section: Basic Principlementioning

confidence: 99%

“…(1) The amplitude of

{Z_{C1}}

and

{Z_{C2}}

Section: Basic Principlementioning

confidence: 99%

“…The value of current limiting inductance commonly used in VSC‐MTDC systems is 100–150 mH. The equation for calculating the impedance of capacitance and inductance is as follows [18]:

\begin{equation}\left\{ \def\eqcellsep{&}\begin{array}{l} {X_c} = \dfrac{1}{{2\pi fC}}\\[8pt] {X_L} = 2\pi fL \end{array} \right.\end{equation}

…”

Section: Basic Principlementioning

confidence: 99%

“…The value of current limiting inductance commonly used in VSC-MTDC systems is 100-150 mH. The equation for calculating the impedance of capacitance and inductance is as follows [18]:…”

Section: Analysis Of Virtual Traveling Wave Power Ratiomentioning

confidence: 99%

See 2 more Smart Citations

VSC‐MTDC system integrity protection scheme: Backup protection based on virtual traveling wave power

Zou

Xiang

Weiping

2022

IET Generation Trans & Dist

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show abstract

“…Wang and Hou [12] offerred a traveling wave fault location method, which is established on the secondary differential current traveling wave (D-CTW) output signal of Rogowski coil electronic current transformer (R-ECT), fitting for multi-terminal hybrid LCC-MMC-HVDC transmission cables. Zhang et al [13] deliverred a single-ended protection scenario for hybrid three-terminal LCC-VSC-HVDC systems in which internal and external faults are discovered by scrutinizing the amplitude-frequency features of the wave impedance. Gao et al [14] suggestted a TW fault localization procedure for a hybrid three-terminal HVDC network founded on improved Local Mean Decomposition (LMD) that is not influenced by wave velocity.…”

Section: Introductionmentioning

confidence: 99%

Artificial Neural Network-based Fault Location in Terminal-hybrid High Voltage Direct Current Transmission Line

Hadaeghi¹,

Iliyaeifar²,

Chirani

2023

IJE

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In this article, a fault location technique based on artificial neural networks (ANN) for Terminal-Hybrid LCC-VSC-HVDC has been assessed and scrutinized. As is known, in conventional HVDC systems (LCC-based and VSC-based HVDCs), the same type of filter is used on both sides due to the use of similar converters in both sender and receiver terminals. In this article, it is concluded that due to the use of two different types of converters at the both ends of the utilized Terminal-hybrid LCC-VSC-HVDC system, and the use of different DC filters on both sides, fault location using positive and negative pole currents of the rectifier side has much better results than the rest of input signals. Therefore, it will be finalized that by increasing and designing suitable DC filters on the transmission line of HVDC systems, fault localization matter will be remarkably and surprisingly facilitated. Nowadays, the fault location of HVDC transmission lines with a value of more than 1% is generally discussed in most articles. In this research, the fault location with a value of 0.0045%, i.e., a distance of 22.5 meters from the fault point in the most satisfactory case is obtained, which shows the absolute feasibility of the ANN along with the wavelet transform. To validate the proposed method, a ±100 KV, Terminal-hybrid LCC-VSC-HVDC system is simulated via MATLAB. The outcomes verify that the proposed technique works perfectly under various fault locations, resistances, and fault types.

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Improved traveling wave protection method for MMC HVDC systems based on the tracking differentiator to resist uncertain interference

Zhou

Liao

et al. 2022

Electric Power Systems Research

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A new protection scheme for transmission line of three-terminal hybrid HVDC system

Cited by 13 publications

References 14 publications

VSC‐MTDC system integrity protection scheme: Backup protection based on virtual traveling wave power

VSC‐MTDC system integrity protection scheme: Backup protection based on virtual traveling wave power

Artificial Neural Network-based Fault Location in Terminal-hybrid High Voltage Direct Current Transmission Line

Improved traveling wave protection method for MMC HVDC systems based on the tracking differentiator to resist uncertain interference

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