Integrated protection of transmission network using a new directional approach

Bo, Zhiqian; Dong, X.Z.; Caunce, B.R.J.; Yang, Yayu; Redfem, M.A.; Chin, N.F.

doi:10.1049/cp:20030677

Cited by 16 publications

(6 citation statements)

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“…There are two protection groups in this stage, the application of which will depend on whether a communication channel is available between the relays at both ends of the protected line section. The directional comparison technique will apply when the communication channel is available [26,27] , for example, channel-2 in Fig.1, otherwise, the accelerated non-communication protection function will apply for accelerated tripping.…”

Section: Stage 2 ( Accelerated Tripping)mentioning

confidence: 99%

Integrated protection scheme for power line

Bo¹,

Shi

Xiang

2008

Trans. Tianjin Univ.

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Section: Stage 2 ( Accelerated Tripping)mentioning

confidence: 99%

Integrated protection scheme for power line

Bo¹,

Shi

Xiang

2008

Trans. Tianjin Univ.

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“…The "Faulted Line Selection" determines the faulted line associated with the busbar where the IOR is installed. Here the technique used can be the conventional directional element [29] or the new transient based protection technique [36]. Once the faulted line or direction is selected, the "Instant Trip" will pick up the settings associated with the faulted line from the "Multiple OC settings" to instantly trip the line section for a fault over the predefined settings.…”

Section: B Communication Networkmentioning

confidence: 99%

“…A comparison between the directional information obtained will decide the faulted line section. The INP will send a direct trip commend to the relays associated with the faulted line section based on the information obtained from the IORs within the network [36].…”

mentioning

confidence: 99%

Overcurrent Relay based Integrated Protection Scheme for Distribution Systems

Bo¹,

Xiang

et al. 2006

2006 International Conference on Power System Technology

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This paper reports on the development of integrated protection for power system. The background of the development is firstly introduced, in which a centralized protection system (or relay) provides the protection of multiple power plant or a substation. A novel integrated protection scheme for distribution system is described. The scheme is based on overcurrent protection technique, in which specially designed protection relays are installed at each substation of a network. In the proposed scheme, one integrated relay is responsible for the protection of every line sections connected to the substation busbar. The conventional directional overcurrent and new adaptive accelerated protection algorithms are implemented into the relay with multiple overcurrent settings to cover all the protected line sections. The paper includes studies of a typical multi section distribution network to demonstrate the principle of the scheme. Studies show that the new scheme not only offer the new protection features for individual power line, but also provide the characteristics of integrated protection.

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“…Studies have found that the fault generated high frequency transients can be detected and quantified and open the possibility for developing new protection principles and techniques [2][3][4][5][6]. At the same time, the dramatic growth in signal processing power of relay platforms, and the availability of suitable communication schemes, has provided a new opportunity to revisit the concept of integrated protection [7]. Research shows that information obtained from multiple power plants and components can be used to derive new protection principles and schemes, for example the wide area protection [8], which could have significant advantages over the existing protection techniques based on individual plant or component.…”

Section: Introductionmentioning

confidence: 99%