Intelligent Out of Step Predictor for Inter Area Oscillations Using Speed-Acceleration Criterion as a Time Matching for Controlled Islanding

Salimian, Mohammad Reza; Aghamohammadi, Mohammad Reza

doi:10.1109/tsg.2016.2613884

Cited by 39 publications

(28 citation statements)

References 41 publications

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“…where 8i 2 N L . The multiplication between b 0 ij and L i;j ; L r;j can readily be converted into the equivalent linear form using the linearization technique presented in (5). Meanwhile, since the priority for splitting control is to minimize load loss to the greatest extent [8], P i and Q i are approximately replaced by the pre-split nodal power load, denoted as P L0 i and Q L0 i , respectively.…”

Section: Formulation For Static Stability Marginmentioning

confidence: 99%

“…With the rapid development of power system monitoring and communication in recent years, the concept of active splitting control has been proposed, directing research toward a real-time monitoring, system-level decision and adaptive control approach [3]. In the active splitting control, major tasks include deciding whether to split [4], when to split [5], and where to split [6]. In this paper, we concentrate on the last problem, which is also referred to as the splitting strategy searching (SSS) problem.…”

Section: Introductionmentioning

confidence: 99%

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Active splitting strategy searching approach based on MISOCP with consideration of power island stability

Zhou

Min

et al. 2019

J. Mod. Power Syst. Clean Energy

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Active splitting control utilizes real-time decision and system-level splitting to prevent cascading blackouts and to maintain power supply under severe disturbances. Splitting strategy searching (SSS) is one of the most crucial issues in active splitting control for deciding ''where to split''. SSS determines the splitting surface in real time to properly divide the asynchronous generators into isolated islands with an optimal control effect. In this paper, an SSS approach that focuses on island stability is presented. The proposed SSS approach is designed to ensure a rational stability margin and regulation ability on each island during and after the transient process of system splitting. This method includes the active/reactive power flow feasibility constraints and voltage/angle stability constraints in the steady state, as well as the frequency response capability constraints in the transient process. By considering the island stability constraints in the SSS, the proposed approach can avoid the splitting strategies with poor stability performance. Therefore, the major advantage of the proposed approach is ensuring better island static and transient stability during and after the splitting control. In addition, the entire model is formulated as a mixedinteger second-order cone programming (MISOCP) model. Thus, it can be rapidly solved by using commercial optimization solvers. Numerical simulation of a realistic provincial power system in central China demonstrates the validity of the proposed approach and the necessity of considering the island stability issues.

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Section: Formulation For Static Stability Marginmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active splitting strategy searching approach based on MISOCP with consideration of power island stability

Zhou

Min

et al. 2019

J. Mod. Power Syst. Clean Energy

View full text Add to dashboard Cite

show abstract

“…For a multimachine power system, the i th, and j th generators are coherent in the time period of [t 1 , t 2 ] if their angles satisfy (1).…”

Section: Identification Of Coherent Generatorsmentioning

confidence: 99%

“…Three critical issues need to be addressed regarding the controlled islanding: when to initiate the islanding (the start-up criterion), where to separate the grid (the islanding strategy), and how to maintain the stability of islands after the separation (islands adjustment). To solve the first problem, different out-of-step protection schemes were proposed in [1][2][3][4][5][6]. Different start-up criteria, in fact, result in different start-up times of the controlled islanding, which bring great challenges for the islanding strategy development.…”

Section: Introductionmentioning

confidence: 99%

A phase‐plane‐based dynamic coherency real‐time identification scheme for controlled islanding

Yang

Hojo

Zhang

2018

IEEJ Transactions Elec Engng

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Controlled islanding often acts as the last resort against a severe blackout. Generator coherency is the primary constraint to determine an effective controlled islanding strategy. This article proposes a scheme to identify the dynamic coherency of generators for controlled islanding. The generator coherency is identified based on the phase-plane trajectory vectors (PTVs) on the phase plane for generators (PPG). Then, a phase plane for buses (PPB) is proposed to assign the nongenerator buses to coherent generator groups following the minimum distance principle. The separated islands are formed by disconnecting certain transmission lines according to the identified coherent generators and areas. The case studies on the IEEE 39-bus 10-machine power system show that the proposed scheme cannot only adapt to different disturbances and changes of system conditions and network topology but also succeed in identifying the generator coherency at different times and developing proper islanding strategies according to current system states.

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“…Voltage based (e.g., [24]) ✓ ✕ ✕ ✓ source impedances dependent, study work phase Swing voltage/Speed acceleration criterion based (e.g., [25])…”

Section: Multifunctional Line Protectionmentioning

confidence: 99%

Wide Area Information-Based Transmission System Centralized Out-of-Step Protection Scheme

Ivanković¹,

Kuzle

Holjevac

2017

Energies

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A wide area monitoring system (WAMS) with reliable telecommunication infrastructure can be expanded and enhanced with additional protection and control functionalities using synchronized phasor data measurements. With that aim, we have developed a multifunctional line protection (MFLP) model with both system and back-up protection functions. Theoretical premises based on transmission and relay protection system knowledge, together with the experience gathered from the operation of existing wide area systems, were used to develop the proposed model. Four main groups of simulation scenarios were defined in order to test the newly implemented functions. The results of the simulation process confirm the assumptions underlying the design of our MFLP module. Simulation results are then used for definition of the protection criteria required for implementation of the wide area protection algorithm in a control center. Conclusions drawn from the protection responses of the proposed algorithm that strengthen the algorithm design process are elaborated in the paper. The main contribution of the paper is the design and development of a centralized MFLP algorithm based on synchronized phasor data that is able to issue a trip command to a circuit breaker before an out-of-step condition occurs.

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Intelligent Out of Step Predictor for Inter Area Oscillations Using Speed-Acceleration Criterion as a Time Matching for Controlled Islanding

Cited by 39 publications

References 41 publications

Active splitting strategy searching approach based on MISOCP with consideration of power island stability

Active splitting strategy searching approach based on MISOCP with consideration of power island stability

A phase‐plane‐based dynamic coherency real‐time identification scheme for controlled islanding

Wide Area Information-Based Transmission System Centralized Out-of-Step Protection Scheme

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