Journal of Modern Power Systems and Clean Energy

ISSN 2196-5625 CN 32-1884/TK

An Extended DC Power Flow Model Considering Voltage Magnitude
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Affiliation:

Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China

Fund Project:

This work was supported in part by the National Key R&D Program of China (No. 2016YFB0900100) and the National Natural Science Foundation of China (No. 51807116).

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    Abstract:

    A quasi-linear relationship between voltage angles and voltage magnitudes in power flow calculation is presented. An accurate estimation of voltage magnitudes can be provided by the quasi-linear relationship when voltage angles are derived by classical DC power flow. Based on the quasi-linear relationship, a novel extended DC power flow (EDCPF) model is proposed considering voltage magnitudes. It is simple, reliable and accurate for both distribution network and transmission network in normal system operation states. The accuracy of EDCPF model is verified through a series of standard test systems.

    图1 Performance of EDCPF on voltage magnitudes estimation verified by IEEE test systems. (a) IEEE 33-bus. (b) IEEE 69-bus. (c) IEEE 14-bus. (d) IEEE 30-bus. (e) IEEE 118-bus.Fig.1
    图2 Performance of EDCPF on voltage magnitudes estimation verified by Polish 3012-bus test system.Fig.2
    图3 Performance of EDCPF on voltage magnitudes estimation under extreme conditions verified by IEEE 118-bus test system.Fig.3
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History
  • Received:November 05,2019
  • Online: May 19,2021