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

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

Active Publication Date: 2019-12-13
SHANGHAI JIAO TONG 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 simu

Method used

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

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Embodiment Construction

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

[0038] Such as 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) Company (model: PXIe-7975R, built-in a Kintex-7 410T FPGA chip of XILINX Company)...

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Abstract

The invention discloses a hybrid electromagnetic transient simulation method suitable for microgrid real-time simulation. The method is characterized in that a traditional node analysis method (NAM) and a highly-parallelized delay insertion method (LIM) are combined; therefore, the micro-grid is segmented from a filter of the distributed power generation system; a delay insertion (LIM) network including a distribution line and a plurality of node analysis (NAM) networks including a distributed power generation system are respectively formed. The NAM network is simulated by adopting a traditional node analysis method; the LIM network is simulated by adopting a delay insertion method; in an initialization phase, an incidence matrix and four diagonal matrixes containing line parameters used for LIM network simulation are formed according to micro-grid line topology and parameters; in a simulation main body cycle, the LIM network and a plurality of NAM networks can be solved at the same time, the parallelism degree of microgrid simulation is improved, in addition, diagonal matrix multiplication is mainly adopted for calculation in the LIM network simulation solving process, the calculation burden generated when a node analysis method is used for solving a large-scale network equation is avoided, and the simulation efficiency is improved.

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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IPC IPC(8): G06F17/50G06Q50/06
CPCG06Q50/06
Inventor 李子润汪可友徐晋吴盼李国杰
Owner SHANGHAI JIAO TONG UNIV
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