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Hybrid electromagnetic transient simulation method for real-time simulation of microgrid

A hybrid electromagnetic and transient simulation technology, applied in the field of power systems, can solve the problems of increasing hardware resources and execution time, and achieve the effects of improving parallelism, improving real-time simulation efficiency, and high computing speed.

Active Publication Date: 2021-09-07
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

The amount of computation to solve the node voltage equation using the nodal analysis method is proportional to the quadratic scale of the simulation. With the increase of the simulation scale, the hardware resources and execution time consumed by the FPGA module will increase rapidly.

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  • Hybrid electromagnetic transient simulation method for real-time simulation of microgrid
  • Hybrid electromagnetic transient simulation method for real-time simulation of microgrid
  • Hybrid electromagnetic transient simulation method for real-time simulation of microgrid

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Embodiment Construction

[0037] The present invention will be further explained below in conjunction with accompanying drawing and embodiment

[0038] like image 3 As shown, a micro-grid including 3 three-phase inverters, 3 Boost circuits, and 21 three-phase lines is taken as an example to illustrate the present invention, but this should not limit the protection scope of the present invention.

[0039]When the hybrid electromagnetic transient simulation method suitable for real-time simulation of micro-grid is used for real-time simulation of micro-grid, the hardware part mainly includes: ① PXIe controller (model: PXIe-8135) of National Instruments (NI): mainly responsible for micro-grid The simulation of the power grid control system can communicate with the host computer through Ethernet at the same time, and display the real-time simulation waveform on the host computer. ②FPGA module of National Instruments (NI) (model: PXIe-7975R, built-in a Kintex-7 410T FPGA chip of XILINX company): mainly re...

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Abstract

A hybrid electromagnetic transient simulation method suitable for real-time simulation of microgrids. Its biggest feature is the combination of the traditional node analysis method (NAM) and the highly parallelized delay insertion method (LIM). The filter of the distributed generation system is divided to form a delayed insertion (LIM) network including the distribution line and multiple node analysis (NAM) networks including the distributed generation system. The NAM network is simulated using the traditional node analysis method. The LIM network is simulated by the delay insertion method. In its initialization stage, an association matrix and four diagonal matrices containing line parameters are formed according to the topology and parameters of the microgrid network. In the simulation main loop, the LIM network can be compared with Solving multiple NAM networks at the same time improves the parallelism of microgrid simulation. In addition, in the process of solving LIM network simulation, diagonal matrix multiplication is mainly used for calculation, which avoids the computational burden of node analysis method when solving large-scale network equations, and improves the simulation performance. efficiency.

Description

technical field [0001] The invention relates to a power system, in particular to a hybrid electromagnetic transient simulation method suitable for real-time simulation of a microgrid. Background technique [0002] Microgrid can realize the energy management of new energy access in distribution network. Before the microgrid is put into practical application, hardware-in-the-loop testing based on electromagnetic transient simulation is required for its controllers, protection devices, and control strategies. [0003] Canadian H.W Dommel proposed the basic theory and method of electromagnetic transient simulation in the late 1960s. Electromagnetic transient simulation can be mainly divided into offline simulation and real-time simulation. In general, the calculation time of offline simulation tools is much longer than the duration of the transient phenomenon under study. For application scenarios with strict time requirements, the real-time simulation ensures the precise syn...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q50/06
CPCG06Q50/06
Inventor 李子润汪可友徐晋吴盼李国杰
Owner SHANGHAI JIAOTONG UNIV
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