Modeling Methods for Power Secondary System Simulation in New Power Systems

doi:10.16183/j.cnki.jsjtu.2023.556

Abstract

Abstract:

New power system achitecture will greatly increase the difficulty and vulnerability of the operation and control of power systems. The high integration of information and communication technology (ICT) promotes comprehensive information sharing, but it also highlights the urgency of establishing modeling and analysis methods for ICT-based power secondary systems. In this paper, simulation modeling methods for power secondary systems are proposed for the first time to achieve information sharing under interconnectivity and interoperability criteria. A smart substation secondary system with complex functional descriptions is taken as the research object. First, a structural model of intelligent electronic devices (IEDs) is proposed which meets the interconnectivity requirements. Then, a functional model of IEDs with built-in algorithms for secondary business in power systems is proposed, as well as power communication protocol models which meet the interoperability requirements under IEC 61850 standard. Furthermore, the IED function in the node domain and data exchange between IEDs in the network domain are achieved, through the state design in the process domain. Finally, taking a typical 220 kV substation line current protection as an example, the entire process of protection setting modification and protection actions after a fault occurs are simulated by correlating the operating status of the power primary system, verifying the correctness of the proposed simulation models.

Key words: new power system, information and communication technology (ICT), power secondary system, finite state machine, intelligent electronic device (IED)

CLC Number:

TM743

HE Ruiwen, XIE Haijun, LU Jialiang, YANG Changxin, MOHAMMAD Shahidehpour. Modeling Methods for Power Secondary System Simulation in New Power Systems[J]. Journal of Shanghai Jiao Tong University, 2025, 59(11): 1581-1591.

Figures/Tables 19

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发送端设备	接收端设备	时延/ms
电子式互感器	采集执行单元	0.141
采集执行单元SV报文	保护单元	0.358
保护单元	采集执行单元GOOSE报文	0.362
采集执行单元GOOSE报文	保护单元	0.314
站控主机	保护单元	1.035