CN201828659U - Inspection device of digitalized electric energy meter - Google Patents

Inspection device of digitalized electric energy meter Download PDF

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Publication number
CN201828659U
CN201828659U CN201020223227XU CN201020223227U CN201828659U CN 201828659 U CN201828659 U CN 201828659U CN 201020223227X U CN201020223227X U CN 201020223227XU CN 201020223227 U CN201020223227 U CN 201020223227U CN 201828659 U CN201828659 U CN 201828659U
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CN
China
Prior art keywords
signal source
module
standard
standard scale
digital
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Application number
CN201020223227XU
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Chinese (zh)
Inventor
殷昌华
杨晓科
肖志华
刘树新
胡绍刚
王世辉
董晓刚
孙丽娜
王智海
葛秀玲
蒋晓刚
刘君
Original Assignee
威胜集团有限公司
辽宁省电力有限公司鞍山供电公司
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Application filed by 威胜集团有限公司, 辽宁省电力有限公司鞍山供电公司 filed Critical 威胜集团有限公司
Priority to CN201020223227XU priority Critical patent/CN201828659U/en
Application granted granted Critical
Publication of CN201828659U publication Critical patent/CN201828659U/en

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Abstract

The utility model discloses an inspection device of a digitalized electric energy meter, which comprises a signal source, a standard meter, a pulse acquisition circuit, an error processor, a router and an optical fiber conversion module, wherein the signal source is a digital signal source which comprises a signal source logic module and a signal source data processing module; the standard meter is a digital standard meter which comprises a standard meter logic module and a standard meter data processing module used for receiving digital signals and providing standard high-frequency power pulses; the signal source logic module, the standard meter logic module and the error processor are connected by an RS485 bus; the router is connected with the signal source to send data frames output by the signal source to the standard meter processing module and the optical fiber conversion module; the optical fiber conversion module converts digital electric signals into analog optical signals which are sent to a meter to be measured; and the pulse acquisition circuit is connected with the error processor to send the acquired standard high-frequency pulse and the pulse of the meter to be measured to the error processor for comparison. The inspection device can be used for inspecting the digitalized electric energy meters meeting various protocol standards.

Description

The digitalized electrical energy meter verifying attachment

Technical field

The utility model relates to a kind of device that is used to detect the digital transformer substation electric energy meter.

Background technology

Digitalized electrical energy meter is meant follows IEC61850-9-1, IEC61850-9-2 communication of digitalization transformer substation stipulations and IEC60044-7/8 electronic mutual inductor standard, has the digital signal input interface, is applied to the electric energy meter of digital transformer substation.Because the input port of digitalized electrical energy meter is a digital interface, and traditional simulation calibration equipment can not provide the digit check signal, and the checking signal of simulation can only be provided, as shown in Figure 2, therefore can't be used for the verification of digitalized electrical energy meter.

The IEC61850 standard is based on the international standard of the electric substation automation system of universal network communication platform, and this standard is divided into 3 layers with the transformer substation communication system: substation level, wall and process layer.Network using Abstract Common Service Interface between substation level and wall is mapped to makes message specification, TCP Ethernet or optical networking.Network using single-point between wall and process layer is to the one-way transmission Ethernet of multiple spot.Intelligent electronic device in the transformer station all adopts unified agreement, carries out message exchange by network.

The IEC60044-7/8 standard is the international standard of electronic mutual inductor, has defined the frame format that is transferred to the Frame of merge cells by electronic mutual inductor in this standard, stipulates for the mapping position of every sampled value therein.

Traditional calibrator for watt-hour meter mainly is made up of simulation signal generator generating means, standard scale and error processor, its signal source is to obtain sinusoidal digital quantity by MCU according to the calculation of parameter of setting to be input to 6 road D/A converters, obtain 6 tunnel sine waves that have certain phase relation between mutually respectively, input to power amplifier as the signal of three-phase voltage and three-phase current and obtain UA, UB, UC, IA, IB and IC output.The simulating signal that tested table and standard scale received signal source produce is exported tested table pulse and high-frequency impulse respectively and is given error processor, thereby obtains error amount.

The utility model content

The purpose of this utility model is to provide a kind of verifying attachment that is used for the digitalized electrical energy meter verification, makes the digitalized electrical energy meter of following IEC61850-9-1, IEC61850-9-2 and IEC60044-7/8 consensus standard can access check.

This digitalized electrical energy meter verifying attachment that the utility model provides, comprise signal source, standard scale, pulse acquisition circuit, error processor, also comprise router, fiber optic switching module, described signal source is a derived digital signal, and it comprises signal source logic module and signal source data processing module; Described standard scale is digital standard scale, and it comprises that standard scale logic module and standard scale data processing module are used for receiving digital signals and the pulse of standard high frequency power is provided; Described signal source logic module, standard scale logic module and error processor connect with the RS485 bus; The Frame that router is connected with signal source its output is distributed to standard scale processing module and fiber optic switching module; Fiber optic switching module converts digital electric signal to analog optical signal and delivers to tested table; Pulse acquisition circuit is connected with error processor, error processor is delivered in the standard high-frequency impulse gathered and tested table pulse compared processing.

What described signal source data processing module and standard scale data processing module all adopted is the digital signal processor with network interface and asynchronous serial communication mouth.

The digit check signal of the utility model verifying attachment output is followed the consensus standard of IEC61850-9-1, IEC61850-9-2 and IEC60044-7/8, the concrete form of Frame can be according to the requirement configuration that realizes, and the voltage of output digital signal representative, the amplitude of current signal and phase place can require to be provided with and to revise according to reality, therefore can be used for the check character digitalized electrical energy meter of the various implementations of stating consensus standard that closes.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the prior art constructions synoptic diagram.

Embodiment

As shown in Figure 1, the utility model digital watch calibration equipment is made up of derived digital signal, digital standard scale, router, pulse acquisition circuit, error processor and power module.Signal source is made up of logic function module and data processing module, and wherein the logic function module is made up of 16 single-chip microcomputers and peripheral interface circuit, is responsible for the parameter setting and the management function of signal source; The data processing module of signal source mainly is made up of 16 DSP and network interface chip, and DSP is responsible for data sampling and framing, and by network port output data frame.Digital standard scale is similar with signal source on hardware configuration, mainly realizes different functions by software control.Router, photoelectric conversion module and error processor can be bought from market and obtain, and Fig. 1 is seen in the connection between each module.

Derived digital signal has two kinds of mode of operations, a kind of online mode, and a kind of is offline mode.When being operated in online mode, PC comes control figure signal source, digital standard scale and error processor as main control equipment by the RS485 bus; When being operated in offline mode, the logical block of signal source is come parameter and the control criterion table and the error processor in signalization source as main control equipment.Derived digital signal is according to the signal of set parametric configuration analog electrical network operation situation, according to the sampling rate of setting this signal sampling is quantized, data after the quantification generate the Frame that meets IEC61850-9-1, IEC61850-9-2 or IEC60044-7/8 standard according to parameter request, flow to tested table and digital standard scale by the network port.

The Frame that meets the variety of protocol standard of digital standard scale receiving digital signals source output, the resolution data frame obtains sampled data wherein, carries out electric energy metrical, obtains current performance number, and exports corresponding high-frequency impulse according to the performance number that calculates.

Router is used to receive and transmit the Frame of derived digital signal output, can produce multiple signals to a way word signal branch, uses for a plurality of tested tables simultaneously.Pulse acquisition circuit is used to gather the output pulses of tested table output and be transferred to error processor.

Error processor receives the high-frequency impulse of digital standard scale output and the tested apparent power pulse that pulse acquisition circuit collects, and relatively the two-way input pulse calculates and the display error value.

Power module provides stable working power for each functional module in installing, because the module that relates in the device is numerous, and each module operating voltage is inconsistent, therefore needs power module that various voltage level steady operation power supplys are provided.

According to the different and employed agreement different (IEC61850 agreement or IEC60044 agreements) of the DSP function of derived digital signal and digital standard scale, selected device is difference to some extent.If what use is the IEC60044 agreement, adopt the reception and the transmission of FPGA realization signal, if use is the IEC61850 agreement, adopt the reception and the transmission of the network chip realization signal of light mouth or electricity mouthful (because of the difference difference of tested table signaling interface).

Claims (2)

1. digitalized electrical energy meter verifying attachment, comprise signal source, standard scale, pulse acquisition circuit, error processor, it is characterized in that also comprising router, fiber optic switching module, described signal source is a derived digital signal, and it comprises signal source logic module and signal source data processing module; Described standard scale is digital standard scale, and it comprises standard scale logic module and standard scale data processing module; Described signal source logic module, standard scale logic module and error processor connect with the RS485 bus; The Frame that router is connected with signal source its output is distributed to standard scale processing module and fiber optic switching module; Fiber optic switching module converts digital electric signal to analog optical signal and delivers to tested table; Pulse acquisition circuit is connected with error processor, error processor is delivered in the standard scale high-frequency impulse gathered and tested table pulse compared processing.
2. according to the described digitalized electrical energy meter verifying attachment of claim 1, what it is characterized in that signal source data processing module and standard scale data processing module all adopt is the digital signal processor with network interface and asynchronous serial communication mouth.
CN201020223227XU 2010-06-11 2010-06-11 Inspection device of digitalized electric energy meter CN201828659U (en)

Priority Applications (1)

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CN201020223227XU CN201828659U (en) 2010-06-11 2010-06-11 Inspection device of digitalized electric energy meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020223227XU CN201828659U (en) 2010-06-11 2010-06-11 Inspection device of digitalized electric energy meter

Publications (1)

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CN201828659U true CN201828659U (en) 2011-05-11

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102768351A (en) * 2012-07-26 2012-11-07 深圳市航天泰瑞捷电子有限公司 Method, system and intelligent tool device for detecting prior mounting function of electric meter
WO2012174693A1 (en) * 2011-06-20 2012-12-27 辽宁省电力有限公司丹东供电公司 Electric energy meter on-line detection method
CN103048638A (en) * 2012-12-14 2013-04-17 中国电力科学研究院 Multi-function power digital signal inspection device
CN103529423A (en) * 2013-10-17 2014-01-22 国家电网公司 Novel digital electric energy meter field calibration device and calibration method
CN103901389A (en) * 2014-04-09 2014-07-02 国家电网公司 Verifying device and method of analog electric signal electric energy meter, analog electronic signal electric energy meter and digital signal electric energy meter
CN104007410A (en) * 2014-06-12 2014-08-27 国家电网公司 Digital electric energy meter verifying device
CN105093165A (en) * 2015-09-08 2015-11-25 国家电网公司 Comprehensive test method of pulse signals of digitization electric energy meter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012174693A1 (en) * 2011-06-20 2012-12-27 辽宁省电力有限公司丹东供电公司 Electric energy meter on-line detection method
CN102768351A (en) * 2012-07-26 2012-11-07 深圳市航天泰瑞捷电子有限公司 Method, system and intelligent tool device for detecting prior mounting function of electric meter
CN102768351B (en) * 2012-07-26 2015-08-19 深圳市航天泰瑞捷电子有限公司 The method of Function detection, system and intelligent fixture equipment is filled before a kind of ammeter
CN103048638A (en) * 2012-12-14 2013-04-17 中国电力科学研究院 Multi-function power digital signal inspection device
CN103529423A (en) * 2013-10-17 2014-01-22 国家电网公司 Novel digital electric energy meter field calibration device and calibration method
CN103529423B (en) * 2013-10-17 2016-05-04 国家电网公司 New digital Watt-hour meter's field test device and method of calibration
CN103901389A (en) * 2014-04-09 2014-07-02 国家电网公司 Verifying device and method of analog electric signal electric energy meter, analog electronic signal electric energy meter and digital signal electric energy meter
CN104007410A (en) * 2014-06-12 2014-08-27 国家电网公司 Digital electric energy meter verifying device
CN105093165A (en) * 2015-09-08 2015-11-25 国家电网公司 Comprehensive test method of pulse signals of digitization electric energy meter
CN105093165B (en) * 2015-09-08 2017-06-16 国家电网公司 A kind of integrated test facility of digitalized electrical energy meter pulse signal

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Granted publication date: 20110511

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