Improvement of Power System Transient Stability in the Event of Multi-Phase Faults and Circuit Breaker Failures

Robak, S.; Machowski, J.; Skwarski, Mateusz; Januszewski, M.

doi:10.1109/tpwrs.2019.2958110

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…If a fault occurs at point K1, the protection strategy should immediately disconnect the QF1 configured with automatic reclosing, and reclose the automatic reclosing once, if the reclosing is successful, the system will run normally; The circuit breakers QF1 and QF2 should selectively trip the circuit breaker body step by step. In this way, the protection device does not selectively remove the fault first, and then uses the automatic reclosing to cooperate with this mode without selective action, which is called the front acceleration mode [17][18]. In this way, the faults of the lines at all levels can be quickly removed, and the permanent fault lines can be selectively tripped after the automatic reclosing action.…”

Section: Automatic Reclosing and Ptp Short-circuit Protection Strateg...mentioning

confidence: 99%

Distributed Generation on Phase-to-Phase Short Circuit Protection in Distribution Network

2020

DPS

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As the distributed generation (DG) is connected to the distribution network, the network structure of the original distribution network will change, and the original phase-to-phase (PTP) short circuit (SC) protection strategy will also change. At this time, the protection devices in the transmission line may make some incorrect action instructions, which will lead to the deviation of the coordination between the PTP protection devices in the distribution network and the instability of the system network structure. In order to ensure the reliability of transmission line power supply in distribution network and fully display the potential of DG, it is necessary to study the PTP short-circuit protection. This paper analyzes the influence of(TIO) DG on PTP short-circuit protection in distribution network from three aspects, that is, the influence of DG on PTP short-circuit protection before and after(BAA) access, and TIO DG on the reliability of PTP short-circuit protection. For the access of DG equipment, it changes the distribution of fault current in distribution system and brings transformation effect to the original distribution network protection configuration, so the PTP short-circuit equipment in distribution network will be affected. Finally, the method of combining automatic reclosing with PTP SC protection strategy of distribution network is proposed, so as to protect the safe operation of distribution network system.

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Section: Automatic Reclosing and Ptp Short-circuit Protection Strateg...mentioning

confidence: 99%

Distributed Generation on Phase-to-Phase Short Circuit Protection in Distribution Network

2020

DPS

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“…OWER systems frequently suffer from various short-circuit faults and are increasingly operated close to their stability limits [1], [2]. Sometimes, it may initially cause voltage dip, and damage to electrical equipment and ultimately a widespread blackout if it is not handled in the reasonable operating time and isolated zones [3].…”

Section: Introductionmentioning

confidence: 99%

A Novel Fault Isolation Scheme in Power System With Dynamic Topology Using Wide-Area Information

Zhang

Tong

Hong

et al. 2022

IEEE Trans. Ind. Inf.

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The flexible and dynamic operation condition of the power system requires that the fault isolation scheme has sufficient adaptability. A novel fault isolation scheme based on wide-area information is proposed in this paper. Based on graph theory, the adjacency matrices of the electrical components and circuit breakers are constructed. The real-time switch status data is exploited to reflect the dynamic changes of the network topology. Then, the tripping path of the circuit breaker connecting each protected electrical component is searched by the Floyd-Warshall algorithm to formulate the fault isolation set for all protected electrical components. The proposed approach is applied to fault isolation from a wide-area perspective, and it is not affected by system coordination and selectivity compared with the one based on local information. The effectiveness of the proposed scheme is verified on a power system with the typical electrical connection under the cases of a single fault, multiple faults, circuit breaker failure, and substation with the outage of DC power supply, and the case where the circuit breakers cannot trip. Since the tripping sequence of the circuit breakers is determined before the fault occurs, even with dynamic changes of the power system conditions, the proposed scheme can minimize the fault isolation zone with low fault clearance time.

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Enhancement of power system stability by real-time prediction of instability and early activation of steam turbine fast valving

Robak

Machowski²,

Skwarski³

2022

Energy Reports

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Improvement of Power System Transient Stability in the Event of Multi-Phase Faults and Circuit Breaker Failures

Cited by 8 publications

References 14 publications

Distributed Generation on Phase-to-Phase Short Circuit Protection in Distribution Network

Distributed Generation on Phase-to-Phase Short Circuit Protection in Distribution Network

A Novel Fault Isolation Scheme in Power System With Dynamic Topology Using Wide-Area Information

Enhancement of power system stability by real-time prediction of instability and early activation of steam turbine fast valving

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