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FPGA-based active power distribution network real-time simulator analog-digital interface design method

A real-time simulation and interface design technology, applied in CAD circuit design, electrical digital data processing, computer-aided design, etc., can solve the problems of high price and limited I/O interface resources, achieve high-speed sampling, ensure communication speed and universal sexual effect

Inactive Publication Date: 2017-08-18
TIANJIN UNIV +2
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AI Technical Summary

Problems solved by technology

Traditional commercial simulators are expensive and have limited I / O interface resources. In contrast, the FPGA (Field Programmable Gate Array)-based active distribution network real-time simulator interface design provides a new idea

Method used

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  • FPGA-based active power distribution network real-time simulator analog-digital interface design method
  • FPGA-based active power distribution network real-time simulator analog-digital interface design method
  • FPGA-based active power distribution network real-time simulator analog-digital interface design method

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Embodiment Construction

[0028] A method for designing an analog-to-digital interface of an FPGA-based real-time simulator for an active power distribution network of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

[0029] like figure 2 Shown, a kind of FPGA-based active distribution network real-time simulator analog-digital interface design method of the present invention comprises the steps:

[0030] 1) Generate the real-time simulator driving clock clk_sim in the FPGA, generate the driving clock clk_ad of the analog-to-digital conversion board and the enable signal oe_ad of the analog-to-digital conversion board, set the FIR filter parameter m, and calculate the filter order N=2 m , set the 0 to N-1 order FIR filter tap coefficients, so that the analog-to-digital conversion board is in a continuous working state, and continuously converts the received analog signal into a digital signal;

[0031] 2) Write the digital signal ...

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Abstract

The invention discloses an FPGA-based active power distribution network real-time simulator analog-digital interface design method. The method comprises the following steps of: generating a real-time simulator driving clock in an FPGA, generating a driving clock of an analog-digital conversion board card and an enable signal of the analog-digital conversion board card, and enabling the analog-digital conversion board card to be in a continuous working state; writing a digital signal output by the analog-digital conversion board card into a dual-port memory RAM of the FPGA; setting a simulation moment to start simulation; forwardly pushing the simulation time for a step length; carrying out cross-clock domain conversion on the digital signal output by the analog-digital conversion board card; carrying out FIR filtration processing on a digital signal read in the dual-port memory RAM; converting the digital signal output after the RIF filtration processing into a 64-bit double double-precision floating-point number to be used by a real-time simulator; judging whether a physical time reaches the simulation moment or not; and judging whether the simulation time reaches a set simulation ending moment or not. According to the method, the effective and high-speed sampling carried out on external analog signals by the simulator is realized while the communication speed and universality of an analog-digital interface of the simulator are ensured.

Description

technical field [0001] The invention relates to an interface design method of a real-time simulator of an active distribution network. In particular, it relates to a method for designing an analog-digital interface of an active distribution network real-time simulator based on FPGA. Background technique [0002] In recent years, with the continuous development and application of distributed generation, micro-grid, flexible AC power distribution and intelligent power distribution technology, the distribution network has transformed from a traditional passive network to a multi-source complex autonomous system, and its dynamic process is also due to many The addition of new elements and new technologies makes it more complicated, and the transient simulation of active power distribution systems has gradually attracted people's attention. At the same time, in terms of calculation difficulty, the transient simulation of active distribution network is facing the challenge of sim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2115/06G06F30/34
Inventor 李鹏曾凡鹏王成山王智颖赵金利宋关羽盛万兴刘科研孟晓丽吕琛叶学顺董伟杰李雅洁陈彬高源黄建业张明龙
Owner TIANJIN UNIV
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