An enhanced decentralised numerical busbar protection relay utilising instantaneous current values from high speed sampling

Watanabe, Hiroshi; Shuto, I.; Igarashi, Kenji; Beaumont, P.; Okuno, Keisuke

doi:10.1049/cp:20010118

Cited by 8 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…RCM receives remote command from other IEDs and analyzes their requirements, or receives remote information and uses it in local processing. The protection of CS uses ownerless structure [17] and can work reliably even if one IED fails. In this paper, installation of the IEDs is in the standard bay as in traditional protection devices and the IEDs are based on block-based design principle which makes it easy to recombine or extend functions through standard module interface.…”

Section: Coordinated Substation (Cs) Protectionmentioning

confidence: 99%

A new coordinated backup protection scheme for distribution network containing distributed generation

Liu

Ding

et al. 2017

Prot Control Mod Power Syst

View full text Add to dashboard Cite

This paper proposes a new backup protection scheme, named coordinated backup protection (CBP) scheme, for distribution networks containing distributed generation. The proposed protection scheme takes into account the issues faced by traditional backup protection, such as difficulty in setting parameters and complex cooperation, and considers the features of distribution networks, such as changeable power flow because of high penetration of distributed generation sources and insufficient measuring quantities. The CBP scheme includes two aspects: coordinated substation protection and regional master substation protection, who also work as nearby backup protection and remote backup protection respectively. The two protections support each other by local information coordination and regional information sharing, in order to improve the reliability of fault identification. The configuration principles and performances of the proposed backup protection scheme are addressed in the paper. Different fault conditions in the IEEE 14-node system have been used to illustrate and verify the feasibility of the CBP scheme.

show abstract

Section: Coordinated Substation (Cs) Protectionmentioning

confidence: 99%

A new coordinated backup protection scheme for distribution network containing distributed generation

Liu

Ding

et al. 2017

Prot Control Mod Power Syst

View full text Add to dashboard Cite

show abstract

“…In order to counteract the influence of the CT saturation, a series of algorithms for detecting the CT saturation are proposed in the works of [4][5][6][7], but these methods generally cause a delay in the operation time. Busbar protection techniques that are based on the transient current are described in the works of [8][9][10][11], and these techniques can achieve a fault detection before the CT saturation. However, they require a complex wavelet transform or mathematical morphology in order to extract the fault characteristics.…”

Section: Introductionmentioning

confidence: 99%

A Novel Busbar Protection Based on the Average Product of Fault Components

Zou

Song²,

Zhang

et al. 2018

Energies

View full text Add to dashboard Cite

This paper proposes an original busbar protection method, based on the characteristics of the fault components. The method firstly extracts the fault components of the current and voltage after the occurrence of a fault, secondly it uses a novel phase-mode transformation array to obtain the aerial mode components, and lastly, it obtains the sign of the average product of the aerial mode voltage and current. For a fault on the busbar, the average products that are detected on all of the lines that are linked to the faulted busbar are all positive within a specific duration of the post-fault. However, for a fault at any one of these lines, the average product that has been detected on the faulted line is negative, while those on the non-faulted lines are positive. On the basis of the characteristic difference that is mentioned above, the identification criterion of the fault direction is established. Through comparing the fault directions on all of the lines, the busbar protection can quickly discriminate between an internal fault and an external fault. By utilizing the PSCAD/EMTDC software (4.6.0.0, Manitoba HVDC Research Centre, Winnipeg, MB, Canada), a typical 500 kV busbar model, with one and a half circuit breakers configuration, was constructed. The simulation results show that the proposed busbar protection has a good adjustability, high reliability, and rapid operation speed.

show abstract

“…In terms of protection principle, busbar protection can be classified as two types based on power frequency components [1]- [5] and transient components [6]- [10], respectively. In which the simple current differential scheme is widely used in busbar protection, but this scheme is likely to mal-operate due to CT error, ratio mismatch or saturation of one of CTs in the case of external fault.…”

Section: Introductionmentioning

confidence: 99%

A fast busbar protection technique based on travelling wave

Gao¹,

Zou²,

Xiang³

2012

2012 IEEE Power and Energy Society General Meeting

View full text Add to dashboard Cite

Using propagation characteristics of travelling wave, an extra high speed busbar protection technique is proposed. If a fault occurs on the transmission line, the forward and backward travelling waves will be generated. When a fault occurs on the busbar, the detected initial travelling waves on all lines connected to this busbar will come from their backs, which are positive direction travelling waves. When a fault occurs on any one of these lines, the detected initial travelling waves on all healthy lines are positive direction travelling wave, whereas the direction of detected one on faulted line is negative. Utilizing amplitude integral relationship of directional travelling waves within a short time after fault , an algorithm discriminating fault direction is constructed. Analyzing fault directions of all lines, an internal busbar fault can be fast identified from external fault. Main factors influencing busbar protection are simulated and analyzed. Simulation results demonstrate that the proposed technique can fast and reliably discriminate whether the busbar has an internal fault or not. Moreover, its performances are hardly affected by earth fault resistances, fault inception angles and fault types, etc. ,

show abstract

An enhanced decentralised numerical busbar protection relay utilising instantaneous current values from high speed sampling

Cited by 8 publications

References 0 publications

A new coordinated backup protection scheme for distribution network containing distributed generation

A new coordinated backup protection scheme for distribution network containing distributed generation

A Novel Busbar Protection Based on the Average Product of Fault Components

A fast busbar protection technique based on travelling wave

Contact Info

Product

Resources

About