Electric energy metering device, system and method based on transmission control unit feedback converter
A technology of transmission control unit and electric energy metering device, which is applied in the direction of electric power measurement through current/voltage, which can solve the problem of high cost and achieve the effects of low cost, fast metering speed and high metering accuracy
Active Publication Date: 2019-11-08
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology
For example, the patent No. CN105067859A "A Power Metering System with Monitoring Components" and the patent No. CN104133109 "A New Power Line Power Metering Device" can both realize the measurement of electric energy, but these power metering systems or devices Both need to independently set up corresponding electric energy meters or electric energy metering modules, as well as other auxiliary equipment, and the cost is relatively high
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[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.
[0033] Such as figure 2 As shown, the present embodiment is based on a drive control unit feedback converter electric energy metering device, including an AC sampling unit 1, a DC sampling unit 2, a drive control unit (DCU, Drive Control Unit) 3 and a host computer 4; the drive control unit 3 includes the feedback control unit 31 and the energy calculation unit 32; the AC sampling unit 1 is used to obtain the power parameters of the AC side of the feedback inverter; the DC sampling unit 2 is used to obtain the power parameters of the DC side of the feedback inverter; the AC sampling unit 1 and the DC side The sampling unit 2 is connected to the feedback control unit 31 respectively, the AC sampling unit 1 and the DC sampling unit 2 are respectively connected to...
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The invention discloses an electric energy metering device of a feedback current transformer based on a transmission control unit. The metering device comprises an AC sampling unit, a DC sampling unit, the transmission control unit and a host computer, and the transmission control unit comprises a feedback control unit and a metering unit, wherein the AC sampling unit obtains an AC-side electric energy parameter of the feedback current transformer, the DC sampling unit obtains a DC-side electric energy parameter of the feedback current transformer, the AC sampling unit and the DC sampling unit are connected with the feedback control unit, the AC sampling unit and the DC sampling unit are connected with the metering unit, the feedback control unit is connected with the metering unit, and the metering unit is connected with the host computer. The invention also discloses a metering system and method of the metering device. The device, system and method have the advantages of low cost, high metering speed and high metering precision.
Description
technical field [0001] The invention relates to the field of urban rail electric energy measurement, in particular to an electric energy measurement device, system and method based on a transmission control unit feedback converter. Background technique [0002] The braking method of modern urban rail vehicles is regenerative braking + air braking, giving priority to regenerative braking, and supplementing it with air braking when it is insufficient. When the train is running, due to the short distance and frequent starting and braking, the braking energy is considerable. Except a small part of the regenerative braking energy is absorbed by other adjacent running trains, the remaining part is consumed by the absorbing resistor installed on the train or the ground in the form of heat. In order to reuse the regenerative braking energy, train regenerative braking energy feedback is proposed, and the regenerative braking energy is fed back to the AC grid through the energy feedb...
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IPC IPC(8): G01R21/06
CPCG01R21/06
Inventor 李昊荣智林刘良杰徐绍龙曹霄翁星方林文彪李志城王斌张征方郭维袁洪凯
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD