Correction Control Strategy of Islanded Power Grid after Separation

doi:10.3969/j.issn.1000-7229.2016.04.019

Abstract

Abstract:

After the implementation of controlled islanding on unstable system, the separation surfaces split the whole system into two or more power islands. It is necessary that effective correction control measures are adopted to ensure the stable operation of each island. This paper proposes rapid real-time correction control strategy based on the bidirectional power flow tracing algorithm and DC flow algorithm of separation surface. Through the power flow tracing algorithm of separation surfaces, we obtain the adjustment object （generator and load） and quantity of island, and check the result with using DC flow algorithm to maintain transient stability under the condition that the islands satisfy the security and stability constraints. Simulations on the New England 39-bus system validate the effectiveness and flexibility of the proposed approach.

Key words: separation island, correction control, power flow tracing algorithm, DC flow algorithm, load shedding and generator tripping

CLC Number:

TM 712

SONG Honglei, LI Xiaofei, WU Junyong,HU Jialin, WANG Zhenming. Correction Control Strategy of Islanded Power Grid after Separation[J]. Electric Power Construction, 2016, 37(4): 124-130.

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