An electronic mutual inductor data transmission method based on CAN bus

A data transmission method and technology of electronic transformers, applied in the direction of bus network, data exchange through path configuration, multi-frequency code system, etc., to achieve the effect of reducing redundancy, easy implementation, and improving utilization rate

Active Publication Date: 2008-03-26
XIAN HIGH VOLTAGE APP RES INST CO LTD
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Problems solved by technology

In order to meet the low-cost and low-complexity connection of the general real-time equipment of the interval layer and the process layer, the present invention provides a CAN bus connection, which is used between the process layer and the interval layer

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  • An electronic mutual inductor data transmission method based on CAN bus
  • An electronic mutual inductor data transmission method based on CAN bus

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Embodiment Construction

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] This embodiment is carried out for 32 sampling points of the power frequency cycle;

[0043] 1. The hardware connection and conflict domain division method of the transmission system

[0044] Because the voltage data of each interval of the substation is the same, but the current data is different, here we adopt the method of measuring with only one group of voltage transformers EVT.

[0045] As shown in Figure 1, the voltage transformer EVT is connected to the main unit module MU (hereinafter referred to as MU) for each interval of the substation, and each receiving end RU (hereinafter referred to as RU) can share the sampling data of EVT, thereby reducing the number of transformers. usage quantity. The current transformers ECT of each interval are connected to the slave unit module SU (hereinafter referred to as SU). Point...

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Abstract

The invention discloses a data transmission method for an electronic transformer based on a CAN bus, which consists of the following four technical proposals: the dividing method for collision domain based on the CAN bus connection, a processing method for data transmission, a soft synchronization method for data sampling and data transmission method with time-triggered mechanism. The invention adopts the fundamental wave and harmonic wave transmission formats of the Fourier transformation, effective value transmission format or real-time wave transmission format and combines the collision domain dividing method in order to achieve the transmission and sharing of system sampling data under conditions of low transmission rate. The use of collision domain dividing method theoretically realizes the unlimited quantity of connection points. The utilization of data transmission method with time-triggered mechanism and the introduction of system virtual time realizes the soft synchronization in data sampling, which eliminates the hardware synchronization transmission cable and reduces the system cost and the wire-connecting complexity.

Description

technical field [0001] The invention relates to a method for transmitting sampling data of an electronic transformer, in particular to a method for transmitting data of an electronic transformer based on a CAN bus. Background technique [0002] The current / voltage transformer is an important equipment in the power system. With the continuous development of the power industry and the continuous improvement of the voltage level of the power grid, the traditional electromagnetic induction transformer with an iron core has become less and less suitable due to its own structural limitations. Adapt to the requirements of the power system. [0003] In recent years, the electronic current / voltage transformer (ECT / EVT) based on the principle of optics and electronics is expected to become the traditional electromagnetic induction transformer due to its advantages of small size, light weight, wide frequency band response, and no saturation phenomenon. The ideal substitute product has...

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Application Information

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IPC IPC(8): H04L12/40H04L27/26
Inventor 任稳柱马亮陈刚冯建华
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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