CN201716367U

CN201716367U - Optical fiber input digital electric energy meter

Info

Publication number: CN201716367U
Application number: CN2010202555717U
Authority: CN
Inventors: 蒋亮; 殷昌华
Original assignee: Wasion Group Co Ltd
Current assignee: Wasion Group Co Ltd
Priority date: 2010-07-13
Filing date: 2010-07-13
Publication date: 2011-01-19
Anticipated expiration: 2020-07-13

Abstract

The utility model discloses an optical fiber input digital electric energy meter comprising an MCU unit and at least two DSP modules, wherein an FPGA module is connected between the MCU unit and each DSP module; each DSP module is provided with an Ethernet interface, and the DSP module is connected with the FPGA module through the Ethernet interface, thus being used for realizing the analysis of IEC61850-9-1/-9-2 and IEC60044 protocols and transmitting sampled data to the FPGA module in an internal standard format; the FPGA module is used for realizing the dot product measurement and calculating various electricity parameters and simultaneously transmitting the data to the MCU unit of a management platform for storage and management, thus realizing that one management module corresponds to multiple paths of metering modules, obviously improving the utilization ratio of related components and frame spaces, and simultaneously being capable of avoiding the problem of excessively mall bend radius of the optical fiber when the existing meter is installed.

Description

Optical fiber input digit electric energy meter

Technical field

The utility model relates to a kind of optical fiber input digit electric energy meter

Background technology

Digital electricity meter is an important component part of intelligent transformer station, it plays a part to connect transformer station's process layer and wall, having only below the digital electricity meter through the sampled data after the variety of protocol packing, on digital electricity meter then is through unpacking the various measurement continuous datas that arrive of back metering.Current digital electricity meter all is to have continued traditional table meter pattern basically, i.e. corresponding metering module (see figure 2) of administration module, traditional table meter pattern is not supported the corresponding a plurality of metering modules of an administration module, be unfavorable for making full use of of administration module function and rack space, simultaneously, tradition table meter is difficult to effectively avoid the too small problem of optical fiber curvature radius (as Fig. 3) when installing, stipulate according to IEEE802.3u, the optical fiber crooked process radius needs greater than 10cm, and the design of existing table meter is difficult to guarantee that this requirement can realize, the optical fiber crooked process radius is too small not only can to cause signal attenuation to become big, and the bit error rate increases, and the optical fiber life-span can not be guaranteed simultaneously.

The utility model content

The purpose of this utility model is to provide a kind of optical fiber input digit electric energy meter, to realize the corresponding multiple metering module of an administration module.

This optical fiber input digit electric energy meter that the utility model provides comprises the MCU unit, the DSP module, between MCU unit and DSP module, be connected with the FPGA module, described DSP module has two at least, each DSP module has Ethernet interface, be connected with the FPGA module by Ethernet interface, be used to realize the parsing of IEC61850-9-1/-9-2 and IEC60044 agreement and sampled data is reached described FPGA module with the internal standard form, realize the dot product metering by described FPGA module, and calculate various electric parameters and simultaneously data are delivered to management platform MCU element memory by the DMA passage, by described MCU unit data are stored and management.

Because the input end of digital electricity meter has not had the forceful electric power signal to exist, only there is optical fiber that each way word signal is sent into the table meter, the utility model is according to these characteristics of prior art, between described MCU module and DSP module, increased the FPGA module, utilize described FPGA module that multichannel DSP module continuous data is carried out the dot product metering, and will measure the result and deliver to storage of described MCU unit and management, this has just realized a cabinet metering multichannel user power utilization situation, significantly improved the utilization factor of relevant components and parts and rack space, the too small problem of fiber bending radius in the time of can also avoiding existing table meter to install simultaneously.

Description of drawings

Fig. 1 is a configuration diagram of the present utility model.

Fig. 2 is the configuration diagram of prior art.

Fig. 3 is the line synoptic diagram of prior art.

Embodiment

As shown in Figure 1, the optical fiber input digit electric energy meter that the utility model provides comprises the MCU unit, FPGA module and DSP module.Wherein said MCU is made up of 32 level controllers the unit, it is connected with the transformer station wall, and the management function of metrology is provided, and is in charge of variety of event, as the warning of decompression defluidization, power down poke etc., and provide the continuous data query interface for higher level's controlling equipment; Described FPGA module is mainly used in the calculating and the measurement that realize each electric parameter value for the Spartan3E series of products of company of match SEL, comprises meritorious/idle/apparent electrical energy metering, RMS, power factor, meritorious/idle/applied power calculating etc.; Blackfin 537 series of products that described DSP module is an ADI company carry Ethernet interface, and described DSP module functions is that the protocol frame that receives is decoded, and deliver to described FPGA module after being translated into the normalization data of 32 fixed length.

The concrete course of work of the optical fiber input digit electric energy meter that the utility model provides is as follows: transformer station's process layer equipment is sampled to on-site signal, and sampled data is delivered to described DSP module after according to IEC61850-9-1/-9-2 and IEC60044 protocol packing; Described DSP module can realize the parsing of IEC61850-9-1/-9-2 and IEC60044 agreement and sampled data is reached described FPGA module with the internal standard form as the data normalization unit; Described FPGA module can receive the data that multichannel DSP module transmits, the metering of realization dot product, calculate and measure the various electric parameters of each road DSP module respectively, comprise meritorious/idle/apparent electrical energy metering, RMS, power factor, meritorious/idle/applied power calculating etc., and will measure the back data and deliver to described administration module MCU element memory by the DMA passage; Described MCU is made up of 32 level controllers the unit, and the management function of metrology is provided, and each road metering module is managed, thereby realize the corresponding multiple metering module of an administration module.

Claims

1. optical fiber input digit electric energy meter, comprise the MCU unit, the DSP module, it is characterized in that between MCU unit and DSP module, being connected with the FPGA module, described DSP module has two at least, each DSP module has Ethernet interface, be connected with the FPGA module by Ethernet interface, be used to realize the parsing of IEC61850-9-1/-9-2 and IEC60044 agreement and sampled data is reached described FPGA module with the internal standard form, realize the dot product metering by described FPGA module, and calculate various electric parameters and simultaneously data are delivered to management platform MCU element memory by the DMA passage, by described MCU unit data are stored and management.