CN110492608A - A kind of device and method of electric energy meter information parameter forwarding - Google Patents
A kind of device and method of electric energy meter information parameter forwarding Download PDFInfo
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- CN110492608A CN110492608A CN201910710111.4A CN201910710111A CN110492608A CN 110492608 A CN110492608 A CN 110492608A CN 201910710111 A CN201910710111 A CN 201910710111A CN 110492608 A CN110492608 A CN 110492608A
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Abstract
The invention discloses a kind of device and methods of electric energy meter information parameter forwarding, it installs electric energy meter information parameter retransmission unit additional in original electric energy meter, fiber optic communication mode, wireless communications mode, power carrier mode, 485 communication patterns is determined by communications reception setting module；The power information that real-time reception electric system issues, is transmitted to that power line carrier power consumption parameter receives and power load is avoided the peak hour control device using PLC technology, realizes that power load is avoided the peak hour control；Single-chip microcontroller, power module, fiber optic telecommunications module, wireless communication module, power line carrier module and interface circuit, fault alarm module, watchdog circuit and 485 communication modules, communications reception setting module are set.Present invention facilitate to ensure that the load of power grid peak load shifting is avoided the peak hour, control reaches optimum state.To which the peak load for reducing operation of power networks is poor, energy-saving purpose is realized.
Description
Technical field
The invention belongs to extend electric system demand side management technology field more particularly to a kind of electric energy meter information ginseng
The device and method of number forwarding.
Background technique
Currently known various electric energy meters are mainly used for the metering of electric flux, although carrier intelligent ammeter, connects with information
It receives, forwarding capability, but realizes that power information receives, forwarding capability needs to change the outfit existing electric energy meter, in addition, carrier intelligent table is without nothing
Line, fiber optic communication receive mode, lack the connection type that same electric system 0.4KV matches network communication system.
Demand side management: under the support of government regulation and policy, effective excitation and guidance measure is taken and is suitable for
Function mode, pass through genco, grid company, Energy Service Company, social intermediary, product vendor, electric power use
Family etc. is pulled together jointly, is improved terminal power consumption efficiency and is changed power mode, reduces electricity while meeting equally with Electricity Functional
Consumption and electricity needs, reach and economize on resources and protect environment, realize that social benefit is best, each side is benefited, the least cost energy
Service carried out management activity.
A part of peak load: being moved to low-valley interval by peak load shifting, so that the peak load for reducing operation of power networks is poor, it is real
Energy saving purpose is showed.
It avoids the peak hour control: according to electric system power information, reducing point, crest segment electricity consumption, improve the load of paddy section electricity consumption
Control mode.Control of avoiding the peak hour includes avoid the peak hour shutdown, pressure regulation of avoiding the peak hour, tune three kinds of modes of ginseng of avoiding the peak hour.
Summary of the invention
A kind of device and method for being designed to provide electric energy meter information parameter forwarding of the embodiment of the present invention, it is intended to
It solves the problems, such as to realize that power information receives, forwarding capability needs to change the outfit existing electric energy meter.
The embodiments of the present invention are implemented as follows, and a kind of device of electric energy meter information parameter forwarding, the electric energy meter is used
The device of power information parameter forwarding includes: single-chip microcontroller, power module, fiber optic telecommunications module, wireless communication module, power carrier mould
Block and interface circuit, fault alarm module, watchdog circuit and 485 communication modules, communications reception setting module；
Single-chip microcontroller, with power module, power line carrier module and interface circuit, fault alarm module, communication module, house dog
Circuit connection realizes that power line carrier system power consumption parameter receives and power load is avoided the peak hour for writing complete control program
Control forwarding capability；Power consumption parameter receives and power load is avoided the peak hour, and control device is connect with single-chip microcontroller, for realizing power load
It avoids the peak hour control；
Power module selects Low Drift Temperature zener diode to carry out second level pressure stabilizing using three-terminal regulator block pressure stabilizing；
Fiber optic telecommunications module is connected with electric system 0.4KV with network communication system, for calling electric energy meter information to join
The optical-fibre communications subprogram of number retransmission unit, by optical network real-time reception electric system according to load control system and demand side management
The electricity using at the peak time information of formulation；
Wireless communication module is connected with electric system 0.4KV with network communication system, for calling electric energy meter information to join
The wireless telecommunications subprogram of number retransmission unit, by wireless network real-time reception electric system according to load control system and demand side management
The electricity using at the peak time information of formulation；
Power line carrier module and interface circuit, pass through I2Clock cable SCL, the data line SDA and single-chip microcontroller of C bus connect
It connects, peripheral interface circuit includes power amplification circuit, filtering shaping circuit, resonance circuit and secondary filtering circuit；Power amplification
Circuit is coupled on power line after the carrier (boc) modulated signals for generating carrier chip carry out power amplification；Carrier wave function quilt
After enabled, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave of 0-5V variation, includes harmonic wave abundant；
Fault alarm module is connect with single-chip microcontroller, using sound-light alarm, by light emitting diode, loudspeaker and driving circuit
Composition, for realizing sound-light alarm when the system failure；
485 communication modules are connected with intelligent electric meter communication interface, for calling electric energy meter information parameter retransmission unit
485 communication subprograms, the peak that real-time reception electric system is formulated according to load control system and demand side management from intelligent electric meter
Paddy power information；
Watchdog circuit is connect with single-chip microcontroller, is disturbed for anti-locking system and is lost program or come into endless loop, makes
At system in case of system halt, and the hardware circuit being added, to guarantee the reliability and stability of system；
Communications reception setting module, connect with single-chip microcontroller, is made of two setting switches；Key assignments 00 is 485 communications receptions
Mode, which is used to communicate with intelligent meter, receives power information in intelligent meter, and key assignments 01 is wireless communication receiver mode, and key assignments 10 is light
Fiber communication reception pattern, key assignments 11 are power line carrier, PLC reception pattern.
Further, which is installed in electric energy meter, and IN1, IN2 are the same as the first electric energy meter
Terminal is connected with third energy meter terminal, and OUT1, OUT2 are connected with the second energy meter terminal and the 4th energy meter terminal, and 485 is logical
Believe that interface is connected with intelligent electric meter interface, fiber optic data communication interface is connected with electric system 0.4KV with network communication system, wireless communication
Interface is connected with electric system 0.4KV with network communication system.
Further, which passes through fiber optic telecommunications module, wireless communication module, electric power
Carrier module and interface circuit, 485 communication modules, communications reception setting module realize multi-modal communications reception.
Another object of the present invention is to provide a kind of electric energy meter information parameter retransmission method, electric energy meter letters
The method for ceasing parameter forwarding selects fiber optic communication mode, wireless communications mode, power carrier mould by communications reception setting module
One of formula, 485 communication patterns, the power information that real-time reception electric system issues are transmitted to electric power using PLC technology
The reception device of user side realizes the control of avoiding the peak hour of power load.Electric energy meter is by installing electric energy meter information parameter forwarding dress additional
It sets, selects fiber optic communication mode, wireless communications mode, power carrier mode, 485 using the communications reception setting module of the device
One of communication pattern matches network communication system by electric power 0.4KV, and real-time reception electric system is according to load control system and demand side pipe
The electricity using at the peak time information formulated is managed, realizes power load using the reception device that PLC technology is transmitted to power consumer side
It avoids the peak hour control.
Further, multi-modal communications receive, and are forwarded using power line carrier, PLC.
The device and method of electric energy meter information parameter forwarding provided by the invention, installs electric energy additional in original electric energy meter
Table power information parameter retransmission unit, determines fiber optic communication mode, wireless communications mode, electric power by communications reception setting module
One of carrier mode, 485 communication patterns, the power information that real-time reception electric system issues are forwarded using PLC technology
Realize that power load is avoided the peak hour control to the reception device of power consumer side.The present invention makes existing dress electric energy meter can be used in receiving electric power
Power information that system issues simultaneously is transmitted to that power line carrier power consumption parameter receives and load is avoided the peak hour control device, makes power consumer
The electrical equipment control mode of selection advantageously ensures that the control of avoiding the peak hour of the load of power grid peak load shifting reaches optimum state.To
The peak load for reducing operation of power networks is poor, realizes energy-saving purpose.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of electric energy meter provided in an embodiment of the present invention；
In figure: 1, the first energy meter terminal；2, the second energy meter terminal；3, third energy meter terminal；4, the 4th electric energy meter
Terminal；5, electric energy meter display screen；6, electric energy meter information parameter retransmission unit；7,485 communication interface；8, radio communication connects
Mouthful；9, fiber optic data communication interface；
Fig. 2 is the apparatus structure schematic diagram of electric energy meter information parameter forwarding provided in an embodiment of the present invention；
In figure: 10, communications reception setting module；11,485 communication module；12, single-chip microcontroller；13, fiber optic telecommunications module；14,
Wireless communication module；15, power line carrier module and interface circuit；16, fault alarm module；17, watchdog circuit；18, it communicates
Receive setting module；19, power module；
Fig. 3 is power line carrier module and interface circuit figure provided in an embodiment of the present invention.
Fig. 4 is the method flow diagram of electric energy meter information parameter forwarding provided in an embodiment of the present invention.
Fig. 5 is the flow chart of power line carrier, PLC provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
With reference to the accompanying drawing and specific embodiment is further described application principle of the invention.
As shown in Figure 1, the device is installed in electric energy meter, IN1, IN2 of device are the same as the first energy meter terminal 1 and third electricity
Energy table terminal 3 connects, and OUT1, OUT2 are connected with energy meter terminal the second energy meter terminal 2, the 4th energy meter terminal 4；485 is logical
Believe that interface is connected with intelligent electric meter communication interface, fiber optic data communication interface is connected with electric system 0.4KV with network communication system, wirelessly
Communication interface is connected with electric system 0.4KV with network communication system.
As shown in Fig. 2, being a kind of electric energy meter information parameter retransmission unit provided for electric system demand side management.
Device hardware include single-chip microcontroller 12, power module 19, fiber optic telecommunications module 13, wireless communication module 14, power line carrier module and
Interface circuit 15, fault alarm module 16,485 communication modules 11, watchdog circuit 17 and communications reception setting module 10 form；
Power module 19 uses three-terminal regulator block pressure stabilizing, and Low Drift Temperature zener diode is selected to carry out second level pressure stabilizing；Fault alarm module 16
Using sound-light alarm, by light emitting diode, loudspeaker and driving circuit composition, when the system failure, single-chip microcontroller 12 issues failure
Driving LED light emitting diode and loudspeaker are realized sound-light alarm by alarm signal.Watchdog circuit 17 be in order to prevent system by
The hardware circuit for interfering and program being made to lose or come into endless loop, cause system in case of system halt, and be added, to guarantee the reliability of system
And stability.The X5045 that the present invention uses is a kind of to integrate three kinds of house dog, voltage monitoring and serial E2PROM functions
Programmable circuit.Communications reception setting module is made of two setting switches.Key assignments 00 is that 485 communications reception modes are used for same intelligence
Energy table communication receives power information in intelligent meter, and key assignments 01 is wireless communication receiver mode, and key assignments 10 is fiber optic communication reception mould
Formula, key assignments 11 are power line carrier, PLC reception pattern；
Single-chip microcontroller, with power module, power line carrier module and interface circuit, fault alarm module, communication module, house dog
Circuit connection realizes that power line carrier system power consumption parameter receives and power load is avoided the peak hour for writing complete control program
Control forwarding capability；Power consumption parameter receives and power load is avoided the peak hour, and control device is connect with single-chip microcontroller, for realizing power load
It avoids the peak hour control；
Power module selects Low Drift Temperature zener diode to carry out second level pressure stabilizing using three-terminal regulator block pressure stabilizing；
Fiber optic telecommunications module is connected with electric system 0.4KV with network communication system, for calling electric energy meter information to join
The optical-fibre communications subprogram of number retransmission unit, by optical network real-time reception electric system according to load control system and demand side management
The electricity using at the peak time information of formulation；
Wireless communication module is connected with electric system 0.4KV with network communication system, for calling electric energy meter information to join
The wireless telecommunications subprogram of number retransmission unit, by wireless network real-time reception electric system according to load control system and demand side management
The electricity using at the peak time information of formulation；
Power line carrier module and interface circuit, pass through I2Clock cable SCL, the data line SDA and single-chip microcontroller of C bus connect
It connects, peripheral interface circuit includes power amplification circuit, filtering shaping circuit, resonance circuit and secondary filtering circuit；Power amplification
Circuit is coupled on power line after the carrier (boc) modulated signals for generating carrier chip carry out power amplification；Carrier wave function quilt
After enabled, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave of 0-5V variation, includes harmonic wave abundant；
Fault alarm module is connect with single-chip microcontroller, using sound-light alarm, by light emitting diode, loudspeaker and driving circuit
Composition, for realizing sound-light alarm when the system failure；
485 communication modules are connected with intelligent electric meter communication interface, for calling electric energy meter information parameter retransmission unit
485 communication subprograms, the peak that real-time reception electric system is formulated according to load control system and demand side management from intelligent electric meter
Paddy power information；
Watchdog circuit is connect with single-chip microcontroller, is disturbed for anti-locking system and is lost program or come into endless loop, makes
At system in case of system halt, and the hardware circuit being added, to guarantee the reliability and stability of system；
Communications reception setting module, connect with single-chip microcontroller, is made of two setting switches；Key assignments 00 is 485 communications receptions
Mode, which is used to communicate with intelligent meter, receives power information in intelligent meter, and key assignments 01 is wireless communication receiver mode, and key assignments 10 is light
Fiber communication reception pattern, key assignments 11 are power line carrier, PLC reception pattern.
As shown in figure 3, being to provide the power line carrier module and interface circuit of power line carrier, PLC function for device.In figure
IN1, IN2 are connected with energy meter terminal 1,3, and OUT1, OUT2 are connected with energy meter terminal 2,4.Carrier chip passes through in Fig. 3
SCL, SDA and single-chip microcontroller connect, and peripheral interface circuit includes power amplification circuit, filtering shaping circuit, resonance circuit and two
Secondary filter circuit.Power amplification circuit is coupled to after the carrier (boc) modulated signals for generating carrier chip carry out power amplification
On power line.After carrier wave function is enabled, carrier signal is exported by PSK_out, and waveform is the square wave of 0-5V variation, comprising abundant
Harmonic wave；By push-pull circuit carry out power amplification after, the square-wave signal of PSK_out point be amplified after through inductance L1, capacitor C3
After completing shaping filter, then it is coupled on low-voltage power line by coupling coil T2, bilateral diode D87 shields.Electricity
D3, D4 play spike that is clamped, absorbing on low-voltage power line and interfere in road.In the reception circuit of Fig. 3, R3 is being received locally
It can effective attenuation by absorption when strong transmitting signal；Inductance L2, capacitor C6 form shunt-resonant circuit, and resonance is with centre frequency
120KHz design, completes the bandpass filtering to useful signal；Good frequency-selective circuit can effectively improve carrier wave receiving sensitivity.
The effect of diode D5, D6 are to clamp down on the current potential for receiving signal in ± 0.7V.It receives signal and introduces core after capacitor C4
Frequency mixing processing is carried out inside piece, SIGIN is moved to 2.5V ± 0.7V after the pull-up of inside, in favor of subsequent processing.Believe in carrier wave
Number post processing circuitry in, received carrier signal enters chip through SIGIN foot after parallel resonance.Due to ceramic filter passband
Band can only be near intermediate frequency, so chip interior mixes the 120KHz signal received and internal 600KHz local oscillation signal
Frequently, the difference frequency signal of 80KHz intermediate-frequency bandwidth is obtained.Mixed frequency signal is input to the input pin of ceramic filter by FLTI foot, ceramics
The FLTO foot for sending chip after filter filtering back to again carries out internal limited range enlargement.Then it is carried out by the hardware de-spreading circuit in chip
The reduction of valid data；Data bit is latched into data pins after the completion of data despreading, while generating synchronization signal HEAD；
Power amplification circuit is to be coupled to electricity after the carrier (boc) modulated signals for generating carrier chip carry out power amplification
In the line of force.After carrier wave function is enabled, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave of 0-5V variation, includes
Harmonic wave abundant；After push-pull circuit carries out power amplification, the square-wave signal of delivery outlet PSK_out point is amplified, in circuit
D3, D4, which play spike that is clamped, absorbing on low-voltage power line, to be interfered.The size of carrier wave transmission power and VHH power supply amplitude
Just, source current offer ability is closely related, and power supply amplitude is improved in a certain range, increases power, can effectively be added
Big transmission power, to extend communication distance.It is dirty to the harmonic wave of power grid to reduce since amplified signal waveform is rich in harmonic wave
Dye, need to be filtered shaping.After inductance L1, capacitor C3 complete shaping filter in circuit, then it is coupled to by coupling coil T2 low
In the piezoelectricity line of force, bilateral diode D87 shields.
As shown in figure 4, the method flow diagram that electric energy meter information parameter of the invention forwards；It is set by communications reception
The mode control word of module determines the reception mode of electric energy meter information parameter retransmission unit, calls corresponding communication subprogram
After electric system power information is received storage, calls power line carrier, PLC service subprogram that power information is transmitted to electric power and use
Family side device controls power load start and stop parameter, to adjust electricity using at the peak time amount, realizes the reason control of power demand side pipe.It is whole
Function passes through main program, optical-fibre communications subprogram, wireless telecommunications subprogram, 485 communication subprograms, power line carrier, PLC service
The cooperations such as program are realized.
It is the power line carrier, PLC clinical procedure of system as shown in Figure 5；Judge carrier communication interrupt request.Work as power carrier
When communication is in reception state, after carrier communication control unit solution expands 1bit data, primary interrupt is generated.It is adopted first when reception
Synchronizing frame head 0X09,0XAF that communication is received with 16bits reception window, 1bit sliding type, after frame head receives successfully, after
Continuous data are intercepted in the way of mono- byte of every 8bits, the valid data transmitted；In receive process, by related
Communication protocol carries out address differentiation, length receives, verification calculates.The identical module in address carries out the data for meeting communication protocol
Response, after be transferred to transmission state.When carrier communication, which is in, sends state.Calling party for carrier communication issues order or receives
The response of side.After carrier communication control unit has sent the spread spectrum data of 1bit, primary interruption is automatically generated, allows lower 1bit number
According to transmission.According to capture and synchronizing process needs, it is first sent to complete " 1 " of few 40bits；Then synchronization frame is sent by bit
Head 0X09,0XAF；Mailing address, data length, data volume, verification are sent by bit according to the related communication protocol of user later
Etc. bytes.After data are all sent completely, carrier module can be transferred to reception state.It but is the last one for ensuring data to be sent
Bit is sent successfully, it is necessary to after having sent last 1bit data after send an interrupt to next time, can just convert load
Wave sends state to reception state.Before total data is not sent completely by carrier wave transmission, CPU must be in time to PLM_RST register write
Enter " A2H ", make counter resets, the incoming carrier in advance that avoids automatically reseting receives state.
There is provided electric energy meter message retransmission units for beneficial outcomes of the invention.Existing dress electric energy meter is set to can be used in connecing
It receives the power information that issues of electric system and is transmitted to that power line carrier power consumption parameter receives and load is avoided the peak hour control device, make electricity
The electrical equipment of power user selection is avoided the peak hour control mode, advantageously ensures that the control of avoiding the peak hour of the load of power grid peak load shifting reaches best
State.To which the peak load for reducing operation of power networks is poor, energy-saving purpose is realized.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of device of electric energy meter information parameter forwarding, which is characterized in that electric energy meter information parameter forwarding
Device includes: single-chip microcontroller, power module, fiber optic telecommunications module, wireless communication module, power line carrier module and interface circuit, event
Hinder alarm module, watchdog circuit and 485 communication modules, communications reception setting module；
Single-chip microcontroller, with power module, power line carrier module and interface circuit, fault alarm module, communication module, watchdog circuit
Connection, receives for realizing power line carrier system power consumption parameter and power load avoids the peak hour and controls forwarding capability, and power consumption parameter connects
It receives and power load control device of avoiding the peak hour is connect with single-chip microcontroller, avoid the peak hour control for realizing power load；
Power module selects Low Drift Temperature zener diode to carry out second level pressure stabilizing using three-terminal regulator block pressure stabilizing；
Fiber optic telecommunications module is connect with electric power 0.4KV with network communication system, for calling electric energy meter information parameter forwarding dress
The optical-fibre communications subprogram set, the peak formulated by the electric system of optical network real-time reception according to load control system and demand side management
Paddy power information；
Wireless communication module is connect with electric power 0.4KV with network communication system, for calling electric energy meter information parameter forwarding dress
The wireless telecommunications subprogram set, the peak formulated by the electric system of wireless network real-time reception according to load control system and demand side management
Paddy power information；
Power line carrier module and interface circuit, pass through I2Clock cable SCL, the data line SDA of C bus are connect with single-chip microcontroller, outside
Enclosing interface circuit includes power amplification circuit, filtering shaping circuit, resonance circuit and secondary filtering circuit；Power amplification circuit is
Carrier (boc) modulated signals for generating carrier chip are coupled on power line after carrying out power amplification；Carrier wave function is enabled
Afterwards, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave of 0-5V variation, includes harmonic wave abundant；
Fault alarm module is connect with single-chip microcontroller, using sound-light alarm, by light emitting diode, and loudspeaker and driving circuit composition,
For realizing sound-light alarm when the system failure；
485 communication modules are connected with intelligent electric meter communication interface, for calling electric energy meter information parameter retransmission unit
485 communication subprograms, 485 communication subprograms refer to that real-time reception electric system is according to load control system and need from intelligent electric meter
The electricity using at the peak time information for asking side pipe reason to formulate；
Watchdog circuit is connect with single-chip microcontroller, is disturbed for anti-locking system and program is made to lose or come into endless loop；
Communications reception setting module, connect with single-chip microcontroller, is made of two setting switches；Key assignments 00 is 485 communications reception modes
It is communicated for same intelligent meter and receives power information in intelligent meter, key assignments 01 is wireless communication receiver mode, and key assignments 10 is logical for optical fiber
Believe reception pattern, key assignments 11 is power line carrier, PLC reception pattern.
2. electric energy meter information parameter retransmission unit as described in claim 1, it is characterised in that: the electric energy meter information
Parameter retransmission unit is installed in electric energy meter, and IN1, IN2 are connected with the first energy meter terminal with third energy meter terminal, OUT1,
OUT2 is connected with the second energy meter terminal and the 4th energy meter terminal, and 485 communication interfaces connect with intelligent electric meter internal communications interface
It connects, fiber optic data communication interface is connected with electric system 0.4KV with network communication system, and wireless communication interface is matched with electric system 0.4KV
Network communication system connection.
3. electric energy meter information parameter retransmission unit as described in claim 1, which is characterized in that the electric energy meter information
Parameter retransmission unit by fiber optic telecommunications module, wireless communication module, power line carrier module and interface circuit, 485 communication modules,
Communications reception setting module realizes multi-modal communications reception.
4. electric energy meter information parameter retransmission unit as described in claim 1, which is characterized in that power amplification circuit is to use
It is coupled on power line after the carrier (boc) modulated signals that carrier chip generates are carried out power amplification.
5. a kind of electric energy meter information parameter retransmission method, which is characterized in that the side of electric energy meter information parameter forwarding
Method selects fiber optic communication mode, wireless communications mode, power carrier mode, 485 communication patterns by communications reception setting module
One of, the power information that real-time reception electric system issues is transmitted to the power line of power consumer side using PLC technology
Carrier wave power consumption parameter receives and load is avoided the peak hour, and control device realizes the control of avoiding the peak hour of power load.
6. electric energy meter information parameter retransmission method as claimed in claim 5, which is characterized in that the electric energy meter information
Parameter retransmission method multi-modal communications receive, and are forwarded using power line carrier, PLC.
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| CN112019265A (en) * | 2020-09-21 | 2020-12-01 | 国网安徽省电力有限公司池州供电公司 | Optical cable fault monitoring method based on OTDR and GIS |
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| CN104077907A (en) * | 2014-07-10 | 2014-10-01 | 国家电网公司 | Device and method for forwarding electricity consumption information parameters of electric energy meter |
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| CN104077907A (en) * | 2014-07-10 | 2014-10-01 | 国家电网公司 | Device and method for forwarding electricity consumption information parameters of electric energy meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019265A (en) * | 2020-09-21 | 2020-12-01 | 国网安徽省电力有限公司池州供电公司 | Optical cable fault monitoring method based on OTDR and GIS |
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