Hardware realization method for updating equivalent historical current source information of small-step system

Abstract

The invention relates to a hardware realization method for updating equivalent historical current source information in electromagnetic transient simulation of a power system. The method comprises the steps of storing an equivalent historical current source value updated by each functional module by utilizing an FIFO structure, reading the equivalent historical current source values from the FIFO structure, inputting the equivalent historical current source values into a double-precision floating point calculation adder to be calculated, storing the accumulated equivalent historical current source values corresponding to different network nodes by utilizing a build-in truel duel RAM of an FPGA, searching the empty situation of the RAM corresponding to the output result network node according to the outputted result of the adder, until all current source values in the FIFO are outputted completely, and storing all current sources after being added into the RAM corresponding to the network node. By utilizing the FIFO structure, the accumulation of the current source values can be completed by utilizing multiple periods, the delay is minimized, and the calculation precision is improved by adopting the dual-precision floating-point number.

Description

technical field [0001] The invention relates to a hardware implementation method for updating equivalent historical current sources in power system electromagnetic transient simulation, especially the equivalent historical current sources used in real-time digital simulation using FPGA in a small-step simulation system Updated hardware implementation. Background technique [0002] In the power system, in order to verify the function and performance of new power automation equipment, considerable tests are required before these equipment are put into actual system operation. The power system real-time digital simulation system can simulate various operating conditions of the power system in real time. It has the advantages of small size, low power consumption, good versatility, strong repeatability, and lower price than dynamic simulation and digital-analog hybrid simulation devices. It has been widely used in the test of power automation equipment. [0003] The small-step ...

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Problems solved by technology

[0008] In view of the above-mentioned prior art, the technical problem solved by the present invention is to propose a method for updating the equivalent historical current source information by using a double-precision floating-point adder, which effectively solves the small-step simulation system of the power system, and realizes equivalent value by hardware. The problem of large delay when updating historical current source information

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