CN202710744U - Main station structure of station electrical energy metering device monitoring management system - Google Patents

Main station structure of station electrical energy metering device monitoring management system Download PDF

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Publication number
CN202710744U
CN202710744U CN 201220401179 CN201220401179U CN202710744U CN 202710744 U CN202710744 U CN 202710744U CN 201220401179 CN201220401179 CN 201220401179 CN 201220401179 U CN201220401179 U CN 201220401179U CN 202710744 U CN202710744 U CN 202710744U
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China
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circuit
voltage
station
channel
state detection
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CN 201220401179
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Chinese (zh)
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刘长树
夏炳增
步东伟
李荣幸
张云峰
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河南弘正电气科技有限公司
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Abstract

The utility model relates to the on-line calibration of a transformer station gateway electrical energy metering device, and especially relates to a main station structure of a station electrical energy metering device monitoring management system. A main station is arranged in a transformer station and is used as a main control center of the transformer station. The main station includes an industrial personal computer, channel switching modules, gateway electric energy meters, a standard meter and a secondary loop state detection module. The industrial personal computer is the control core of the main station, is connected with the channel switching modules and the gateway electric energy meters, controls the channel switching of the channel switching modules, and reads the data information of the gate electric energy meters. At the same time, the industrial personal computer carries out the data exchange with the standard meter via a communication interface and is communicated with the secondary loop state detection module to read the state information of a corresponding channel secondary loop. The channel switching modules add the three-phase voltage and three-phase current measuring signals of a corresponding channel to the measurement signal input terminal of the standard meter for measurement through controlling the closing states of different relays, so the calibration and detection of multiple electric energy meters via the standard meter and the secondary loop state detection circuit is realized.

Description

A kind of station with the main website structure of electric power meter management system for monitoring

Technical field

The utility model relates to on-line calibration and the substation safety operation control system of a kind of transformer station Electric Energy Tariff Point Metering Device, particularly relates to a kind of the station with the main website structure of electric power meter management system for monitoring.

Background technology

In various transformer stations Electric Energy Tariff Point Metering Device remote monitoring and controlling system, such as transformer station's gate energy meter remote online detection system, intelligent station electric power meter monitoring management infosystem, transformer station's mutual inductor on-line monitoring system etc., a complete measuring apparatus is comprised of voltage transformer (VT), current transformer, secondary returning testing circuit, electric energy meter usually, in order to guarantee measurement accuracy, need to carry out the cycle verification to the each several part of operating electric energy metered system.The authentication method that adopts at present is with electric energy meter on-site calibrator electric energy meter in the metering system to be carried out field-checking; With mutual-inductor tester to the verification of voltage transformer (VT) summation current transformer.There is the deficiency of following several respects in this authentication method:

What 1, carry out is to identify in the cycle, and it is inaccurate or damage non-metering problem in time to find to measure the metering of mutual inductor and electric energy meter.In case occur the inaccurate problem of metering in the electric energy metered system, need to wait until that next identifies that date just can find, can cause the tremendous economic loss because of metering Bu Zhun Give electric system during this period.

2, a large amount of manpower and materials are wasted in field test.Field test needs the reviewer to arrive substation field work, the transformer station of economizing for trans-regional particularly inter-network, the reviewer is very arduous, rush towards the scene from afar, also to carry inspection machine, because the field test work that needs of trouble free service also needs cooperation personnel and the leader that takes personal charge of the shift, add long-distance driving, also will be equipped with driver and rear service personnel, the repeatedly field test work of carrying out every year all needs a large amount of manpower and materials guarantees.

3, there are wiring faults and potential safety hazard during field test.According to managerial demand, the gage work personnel must carry out electric current, voltage secondary circuit operation at the scene, the staff repeatedly unclamps the connection terminal on the measuring screen and the operation such as screws, the phenomenons such as the loosening or stripped thread of connection terminal are often arranged, make artificially the electric power meter fault, brought the larger error in dipping of electric power meter.There is the exposed metal part in the wiring of voltage circuit in addition, and there is certain potential safety hazard in the metrological personnel hot line job, is prone to serious security incident.

The utility model content

The utility model is not enough for prior art, a kind of station with the main website structure of electric power meter management system for monitoring proposed, solve the defective that to find in time in the existing transformer station electric energy metered system that electric energy metrical is inaccurate, guaranteed transformer station's electric energy metered system measurement accuracy.

The technical scheme that the utility model adopts:

A kind of station with the main website structure of electric power meter management system for monitoring, described main website is positioned at transformer station as the Master Control Center of transformer station, comprise industrial computer, channel switching module, gate energy meter, standard scale and secondary circuit state detection module, wherein industrial computer is as the control core of main website, be connected by communication interface interface channel handover module and with the gate energy meter communication downwards, the passage of control channel handover module switches, and reads the data message of gate energy meter; Described industrial computer carries out exchanges data by communication interface and standard scale simultaneously, and communicates by letter with the secondary circuit state detection module, reads the status information of respective channel secondary circuit; Described channel switching module comprises verification commutation circuit and the electrical energy pulse commutation circuit of gate energy meter, and PT loop load detects commutation circuit, and CT loop load detects commutation circuit; Described channel switching module adopts the dsp controller based on DSP2812, by controlling different relay adhesives, the measuring-signal input end that 3 phase voltages and the 3 current phasor measurement signals of respective channel are added to standard scale is measured, realized verification and detection to a plurality of electric energy meters with a standard scale with by the secondary circuit state detection circuit.

The described station main website structure of electric power meter management system for monitoring, the verification commutation circuit of gate energy meter and electrical energy pulse handover module form the gate energy meter checking circuit: DSP2812 controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of electric power meter end, the current input terminal of the simultaneously three-phase and four-line electric current of mutual inductor access standard scale, the electrical energy pulse output signal PLUS1-M of described electric energy meter, the pulse measurement input end of PLUS1-S access standard scale is realized the verification to described electric energy meter;

PT loop load detects commutation circuit: DSP2812 and controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of voltage transformer (VT) end, the current input terminal of the simultaneously three-phase and four-line electric current of mutual inductor access standard scale is realized the detection to corresponding mutual inductor PT load;

CT loop load detects commutation circuit: DSP2812 and controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of current transformer end, the three-phase and four-line electric current of while current transformer) current input terminal of access standard scale is realized the detection to corresponding mutual inductor CT load.

The described station main website structure of electric power meter management system for monitoring, described channel switching module comprises that the detection commutation circuit of PT secondary voltage drop: DSP2812 controls corresponding relay adhesive, the three-phase and four-line of corresponding voltage transformer (VT) end and the three-phase and four-line voltage of electric power meter end access secondary circuit state detection circuit are realized the detection to PT loop secondary voltage drop.

The described station main website structure of electric power meter management system for monitoring, the secondary circuit state detection module is by the PT secondary circuit voltage drop value of sense channel handover module realization to respective channel, and described secondary circuit state detection module comprises isolating transformer T1, T2, T3; Amplifier U1, U2, U3 and the DSP2812 that contains the AD conversion; Isolating transformer T1 is delivered to top voltage PT1-UA secondary, in order to compare with terminal voltage DPT1-UA, and the electrical isolation between two input ends of implement device; Voltage PT1-UA, the DPT1-UA at tested PT secondary circuit two ends received two input ends of secondary circuit state detection circuit by channel switching module, by measuring the voltage U C1 DPT1-UA+ between C1 point and DPT1-UA+ point, the pressure drop that records the PT secondary circuit; Resistance R 1 and amplifier U1 consist of sampling and the amplification of pressure drop signal, then enter DSP2812 by resistance R 4 and carry out the AD conversion, and measurement data is sent into upper industrial computer by the RS232 mouth of DSP.

The beneficial effects of the utility model:

1, the utility model station main website structure of electric power meter management system for monitoring, on-line testing and the PT of electric energy meter have been realized, the presence of CT detects, can find in time that the metering of mutual inductor in the measurement loop and electric energy meter is inaccurate or damage non-metering problem, and can occur system being revised when unusual at transformer station's electric energy metered system.Guarantee transformer station's electric energy metered system measurement accuracy, can reduce the tremendous economic loss that causes because of metering Bu Zhun Give electric system, had obvious economic effect.

2, the utility model station main website structure of electric power meter management system for monitoring is reasonable in design, simple in structure, realizes easily.Realized verification and detection to a plurality of electric energy meters by adopting a standard scale and secondary circuit state detection circuit.System adopts this main website structure, and the gage work personnel are electric current, voltage secondary circuit operation at the scene, has reduced man-made fault and the personal safety hidden danger that may exist, for safety in production provides strong material guarantee.

3, the utility model station main website structure of electric power meter management system for monitoring, information acquisition and operation to the field electric energy measurement device, all the master station computer in power supply enterprise realizes, therefore fast, efficient, reliable, safety, reduce staff's labour intensity, improved the modernization level of the management of power use, helped to establish good corporate image, the competitive power of enterprise has good social benefit greatly.

Description of drawings

Fig. 1: stand with the main website structure principle chart of electric power meter management system for monitoring;

Fig. 2: channel switching module circuit theory diagrams;

Fig. 3: secondary circuit state detection circuit schematic diagram.

Embodiment

Embodiment one: referring to Fig. 1, Fig. 2, the utility model station main website structure of electric power meter management system for monitoring, described main website is positioned at transformer station as the Master Control Center of transformer station, comprise industrial computer, channel switching module, gate energy meter, standard scale and secondary circuit state detection module, wherein industrial computer is as the control core of main website, be connected by communication interface interface channel handover module and with the gate energy meter communication downwards, the passage of control channel handover module switches, and reads the data message of gate energy meter; Described industrial computer carries out exchanges data by communication interface and standard scale simultaneously, and communicates by letter with the secondary circuit state detection module, reads the status information of respective channel secondary circuit; Described channel switching module comprises verification commutation circuit and the electrical energy pulse commutation circuit of gate energy meter, and PT loop load detects commutation circuit, and CT loop load detects commutation circuit; Described channel switching module adopts the dsp controller based on DSP2812, by controlling different relay adhesives, the measuring-signal input end that 3 phase voltages and the 3 current phasor measurement signals of respective channel are added to standard scale is measured.After switching by channel selecting signals collecting such as the electrical energy impulse signals of transformer station's polylith electric energy meter, voltage signal, current signals, main website is connected to metering input end and the secondary circuit state detection unit of the standard scale in the main website, realize on-the-spot polylith electric energy meter is checked and the secondary circuit state is monitored with a standard scale with by the secondary circuit state detection circuit, and can pass through the detected data of communication interface teletransmission and each quantity of state of secondary circuit.

The principle of work structural representation of main website as shown in Figure 1.Main website mainly contains following four parts and forms:

Industrial computer: the control core that is main website.Passage by RS485 communication interface control " channel switching module " switches downwards; This RS485 communication interface again with the gate energy meter communication, read the data message of gate energy meter.Carry out exchanges data by RS232 interface 2 and " standard scale "; Communicated by letter with " secondary circuit state detection module " by RS232 interface 1, read the status information of respective channel secondary circuit.Upwards by LAN mouth or GPRS interface and server/customer end communication, download the verification plan and upload test data.

Channel switching module: comprise " CT channel switching module ", " PT channel switching module " reaches " electrical energy pulse handover module ".To the voltage and current signal of input, electrical energy impulse signals is nursed one's health, and the control of accepting the loop switch signal is switched test channel.The voltage signal (being used for the PT pressure fall-off test) of the voltage and current signal of the electric current of output CT secondary circuit and voltage signal, PT secondary circuit, PT secondary outgoing line side.

Standard scale: testing standard is provided.The electrical measurements such as energy test voltage, electric current, phase place, frequency are carried out the electric energy meter error verification.

The secondary circuit state detection module: the PT secondary circuit voltage drop value of sense channel handover module respective channel.

The course of work of main website:

Industrial computer sends control command to " channel switching module 1 " by the RS485 communication interface, control " channel switching module 1 " work, all the other " channel switching module " all quit work in the system, the electric energy measurement semaphore of " electric energy meter 1 " circuit will be received " standard scale " and " secondary circuit state-detection " circuit by " channel switching module 1 " at this moment, " standard scale " carries out verification to " electric energy meter 1 ", checking data sends to industrial computer by RS232 (2); Simultaneously, the secondary circuit state detection unit pair PT mutual inductor that links to each other with " electric energy meter 1 ", the state of CT mutual inductor detects, and the detection data communication device is crossed serial port RS232 (1) and is also sent to industrial computer.So far, the verification of electric energy meter 1 has just been finished.Then, industrial computer will send control command to " channel switching module 2 " by the RS485 communication interface, control " channel switching module 2 " work, all the other " channel switching module " all quit work in the system, this moment, the measuring-signal amount relevant with " electric energy meter 2 " will be received in " standard scale " and " secondary circuit state-detection " circuit, realized verification and state-detection to " electric energy meter 2 ".To the verification of " the electric energy meter n " on N road in the system and state-detection process with aforementioned the same.After system finishes verification and state-detection to " electric energy meter n ", can get back to again verification and state-detection to " electric energy meter 1 ", so circulation has just realized on-line testing and state-detection to all " electric energy meters " in the system.

Embodiment two: referring to Fig. 1, Fig. 2, the station of the present embodiment main website structure of electric power meter management system for monitoring, further differently from embodiment one be: the verification commutation circuit of gate energy meter and electrical energy pulse handover module form the gate energy meter checking circuit: DSP2812 controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of electric power meter end, the current input terminal of the simultaneously three-phase and four-line electric current of mutual inductor access standard scale, the electrical energy pulse output signal PLUS1-M of described electric energy meter, the pulse measurement input end of PLUS1-S access standard scale is realized the verification to described electric energy meter;

PT loop load detects commutation circuit: DSP2812 and controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of voltage transformer (VT) end, the current input terminal of the simultaneously three-phase and four-line electric current of mutual inductor access standard scale is realized the detection to corresponding mutual inductor PT load;

CT loop load detects commutation circuit: DSP2812 and controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of current transformer end, the three-phase and four-line electric current of while current transformer) current input terminal of access standard scale is realized the detection to corresponding mutual inductor CT load;

Described channel switching module comprises that also the detection commutation circuit of PT secondary voltage drop: DSP2812 controls corresponding relay adhesive, the three-phase and four-line of corresponding voltage transformer (VT) end and the three-phase and four-line voltage of electric power meter end access secondary circuit state detection circuit are realized the detection to PT loop secondary voltage drop.

Channel switching module realizes with verification and the detection to a plurality of electric energy meters of a standard scale and secondary circuit state detection circuit.The circuit theory diagrams of channel switching module as shown in Figure 2.Mainly contain " CT passage switching channel " in the channel switching module circuit, " PT passage switching channel " reaches " electrical energy pulse switching channel ".To the voltage and current signal of input, electrical energy impulse signals is nursed one's health, and the control of accepting the loop switch signal is switched sense channel.The voltage signal (being used for the PT pressure fall-off test) of the voltage and current signal of the electric current of output CT secondary circuit and voltage signal, PT secondary circuit, PT secondary outgoing line side.

The principle of work of channel switching module circuit is: DSP2812 links to each other with industrial computer by the RS485 communication interface, receive the instruction that industrial computer sends, control corresponding relay adhesive, with the measuring-signal input end that 3 phase voltages and the 3 current phasor measurement signals of corresponding passage are added to standard scale, measure.

Receive the order that industrial computer sends over by DSP2812, control different relay closes and realize different functions.Below be the principle of work that channel switching module in the utility model is described as an example of channel switching module 1 example, the principle of work of rest channels handover module is identical with channel switching module 1.

1, the verification of electric energy meter: as DSP2812 pilot relay K1, K2, K3, during the K4 adhesive, DPT1-UA, DPT1-UB, DPT1-UC, DPT1-UO, the voltage input end of (electric power meter end three-phase and four-line voltage) access standard scale, while CT1-IA, CT1-IB, CT1-IB, the current input terminal of CT1-IO (the three-phase and four-line electric current of CT1 mutual inductor) access standard scale, the electrical energy pulse output signal PLUS1-M of described electric energy meter, the pulse measurement input end of PLUS1-S access standard scale is realized the verification to described electric energy meter.

2, PT loop load detects: as DSP2812 pilot relay K11, K12, K5, during the K6 adhesive, PT1-UA, PT1-UB, PT1-UC, PT1-UO, the voltage input end of (voltage transformer (VT) end three-phase and four-line voltage) access standard scale, simultaneously PT1-IA, PT1-IB, PT1-IB, the current input terminal of PT1-IO (the three-phase and four-line electric current of PT1 mutual inductor) access standard scale is realized the detection to mutual inductor PT1 load.

3, CT loop load detects: as DSP2812 pilot relay K7, K8, K3, during the K4 adhesive, CT1-UA, CT1-UB, CT1-UC, CT1-UO, the voltage input end of (CT1 current transformer end three-phase and four-line voltage) access standard scale, simultaneously CT1-IA, CT1-IB, CT1-IB, the current input terminal of CT1-IO (the three-phase and four-line electric current of CT1 current transformer) access standard scale is realized the detection to mutual inductor CT1 load.

4, the detection of PT secondary voltage drop: as DSP2812 pilot relay K9, K10, K11, during the K12 adhesive, PT1-UA, PT1-UB, PT1-UC, PT1-UO, (PT1 voltage transformer (VT) end three-phase and four-line voltage), DPT1-UA, DPT1-UB, DPT1-UC, DPT1-UO, (electric power meter end three-phase and four-line voltage) access secondary circuit state detection circuit is realized the detection to PT loop secondary voltage drop.

Embodiment three: referring to Fig. 1~Fig. 3, the station of present embodiment is compared with embodiment one or embodiment two with the main website structure of electric power meter management system for monitoring, further discloses the implementation of secondary circuit state detection module.Referring to Fig. 3, the secondary circuit state detection circuit comprises isolating transformer T1, T2, T3 to composition; Amplifier U1, U2, U3; The DSP2812 that contains the AD conversion.Realization enters the measurement of voltage difference between electric power meter end voltage DPT1-U to PT voltage transformer (VT) output end voltage PT1-U and PT voltage transformer (VT), realizes PT secondary circuit voltage drop value to respective channel by the sense channel handover module.Its principle of work is: the A in the three-phase illustrates as example mutually, B phase and C mutually with A structure mutually, principle of work is identical.The Main Function of isolating transformer T1 is top voltage PT1-UA to be delivered to secondary, in order to compare with terminal voltage DPT1-UA, and the electrical isolation between two input ends of implement device, guarantees the security of measuring.The specific works process is as follows: two input end (PT1-UA+ among the figure that voltage PT1-UA, the DPT1-UA at tested PT secondary circuit two ends received the secondary circuit state detection circuit by channel switching module, PT1-UA-end and DPT1-UA+, the DPT1-UA-end, because the no-load voltage ratio of isolation T1 is 1:1, the secondary voltage UC1D1 of T1 should equate with UPT1-UA+PT1-UA-voltage, because the D1 point links to each other with terminal DPT1-UA-, therefore measure the voltage U C1 DPT1-UA+ between C1 point and DPT1-UA+ point, the pressure drop that has also just recorded the PT secondary circuit.R1 and U1 have consisted of sampling and the amplification of pressure drop signal, then enter DSP2812 by R4 and carry out the AD conversion, and measurement data is sent into upper industrial computer by the RS232 mouth of DSP.

Claims (5)

1. stand with the main website structure of electric power meter management system for monitoring for one kind, described main website is positioned at transformer station as the Master Control Center of transformer station, comprise industrial computer, channel switching module, gate energy meter, standard scale and secondary circuit state detection module, wherein industrial computer is as the control core of main website, be connected by communication interface interface channel handover module and with the gate energy meter communication downwards, the passage of control channel handover module switches, and reads the data message of gate energy meter; Described industrial computer carries out exchanges data by communication interface and standard scale simultaneously, and communicates by letter with the secondary circuit state detection module, reads the status information of respective channel secondary circuit; It is characterized in that: described channel switching module comprises verification commutation circuit and the electrical energy pulse commutation circuit of gate energy meter, and PT loop load detects commutation circuit, and CT loop load detects commutation circuit; Described channel switching module adopts the dsp controller based on DSP2812, by controlling different relay adhesives, the measuring-signal input end that 3 phase voltages and the 3 current phasor measurement signals of respective channel are added to standard scale is measured, realized verification and detection to a plurality of electric energy meters with a standard scale with by the secondary circuit state detection circuit.
2. station according to claim 1 is with the main website structure of electric power meter management system for monitoring, it is characterized in that: the verification commutation circuit of gate energy meter and electrical energy pulse handover module form the gate energy meter checking circuit: DSP2812 controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of electric power meter end, the current input terminal of the simultaneously three-phase and four-line electric current of mutual inductor access standard scale, the electrical energy pulse output signal PLUS1-M of described electric energy meter, the pulse measurement input end of PLUS1-S access standard scale is realized the verification to described electric energy meter;
PT loop load detects commutation circuit: DSP2812 and controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of voltage transformer (VT) end, the current input terminal of the simultaneously three-phase and four-line electric current of mutual inductor access standard scale is realized the detection to corresponding mutual inductor PT load;
CT loop load detects commutation circuit: DSP2812 and controls corresponding relay adhesive, the voltage input end of the three-phase and four-line voltage access standard scale of current transformer end, the current input terminal of the simultaneously three-phase and four-line electric current of current transformer access standard scale is realized the detection to corresponding mutual inductor CT load.
3. station according to claim 1 and 2 is with the main website structure of electric power meter management system for monitoring, it is characterized in that: described channel switching module comprises that the detection commutation circuit of PT secondary voltage drop: DSP2812 controls corresponding relay adhesive, the three-phase and four-line of corresponding voltage transformer (VT) end and the three-phase and four-line voltage of electric power meter end access secondary circuit state detection circuit are realized the detection to PT loop secondary voltage drop.
4. station according to claim 3 is with the main website structure of electric power meter management system for monitoring, it is characterized in that: the secondary circuit state detection module is by the PT secondary circuit voltage drop value of sense channel handover module realization to respective channel, and described secondary circuit state detection module comprises isolating transformer T1, T2, T3; Amplifier U1, U2, U3 and the DSP2812 that contains the AD conversion; Isolating transformer T1 is delivered to top voltage PT1-UA secondary, in order to compare with terminal voltage DPT1-UA, and the electrical isolation between two input ends of implement device; Voltage PT1-UA, the DPT1-UA at tested PT secondary circuit two ends received two input ends of secondary circuit state detection circuit by channel switching module, by measuring the voltage U C1 DPT1-UA+ between C1 point and DPT1-UA+ point, the pressure drop that records the PT secondary circuit; Resistance R 1 and amplifier U1 consist of sampling and the amplification of pressure drop signal, then enter DSP2812 by resistance R 4 and carry out the AD conversion, and measurement data is sent into upper industrial computer by the RS232 mouth of DSP.
5. station according to claim 1 and 2 is with the main website structure of electric power meter management system for monitoring, it is characterized in that: the secondary circuit state detection module is by the PT secondary circuit voltage drop value of sense channel handover module realization to respective channel, and described secondary circuit state detection module comprises isolating transformer T1, T2, T3; Amplifier U1, U2, U3 and the DSP2812 that contains the AD conversion; Isolating transformer T1 is delivered to top voltage PT1-UA secondary, in order to compare with terminal voltage DPT1-UA, and the electrical isolation between two input ends of implement device; Voltage PT1-UA, the DPT1-UA at tested PT secondary circuit two ends received two input ends of secondary circuit state detection circuit by channel switching module, by measuring the voltage U C1 DPT1-UA+ between C1 point and DPT1-UA+ point, the pressure drop that records the PT secondary circuit; Resistance R 1 and amplifier U1 consist of sampling and the amplification of pressure drop signal, then enter DSP2812 by resistance R 4 and carry out the AD conversion, and measurement data is sent into upper industrial computer by the RS232 mouth of DSP.
CN 201220401179 2012-08-14 2012-08-14 Main station structure of station electrical energy metering device monitoring management system CN202710744U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103630868A (en) * 2013-09-23 2014-03-12 中国电子科技集团公司第二十七研究所 Remote substation electrical energy metering information detection system
CN103778829A (en) * 2014-01-09 2014-05-07 广西电网公司电力科学研究院 Electric energy metering transformer secondary voltage drop and load test training system
CN104730334A (en) * 2013-12-18 2015-06-24 上海宝钢工业技术服务有限公司 Electric energy metering method based on dynamic switching input signal
CN105301552A (en) * 2015-11-11 2016-02-03 千江(上海)信息科技有限公司 Electric energy metering device online verification system
CN105487044A (en) * 2016-01-29 2016-04-13 国家电网公司 Current switching apparatus for electric energy meter remote calibration apparatus and switching method
CN104280715B (en) * 2014-10-17 2017-01-11 国网四川省电力公司电力科学研究院 Gateway electric energy meter online monitoring system
CN108132453A (en) * 2017-12-04 2018-06-08 广东电网有限责任公司电力科学研究院 A kind of intelligent termination for Electric Energy Tariff Point Metering Device on-line testing
CN108152782A (en) * 2017-12-05 2018-06-12 国家电网公司 A kind of test method of massive quantity power supply and measurement electric energy meter more positive coefficient

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103630868A (en) * 2013-09-23 2014-03-12 中国电子科技集团公司第二十七研究所 Remote substation electrical energy metering information detection system
CN104730334A (en) * 2013-12-18 2015-06-24 上海宝钢工业技术服务有限公司 Electric energy metering method based on dynamic switching input signal
CN103778829A (en) * 2014-01-09 2014-05-07 广西电网公司电力科学研究院 Electric energy metering transformer secondary voltage drop and load test training system
CN104280715B (en) * 2014-10-17 2017-01-11 国网四川省电力公司电力科学研究院 Gateway electric energy meter online monitoring system
CN105301552A (en) * 2015-11-11 2016-02-03 千江(上海)信息科技有限公司 Electric energy metering device online verification system
CN105487044A (en) * 2016-01-29 2016-04-13 国家电网公司 Current switching apparatus for electric energy meter remote calibration apparatus and switching method
CN108132453A (en) * 2017-12-04 2018-06-08 广东电网有限责任公司电力科学研究院 A kind of intelligent termination for Electric Energy Tariff Point Metering Device on-line testing
CN108152782A (en) * 2017-12-05 2018-06-12 国家电网公司 A kind of test method of massive quantity power supply and measurement electric energy meter more positive coefficient

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