CN104077907A - Device and method for forwarding electricity consumption information parameters of electric energy meter - Google Patents
Device and method for forwarding electricity consumption information parameters of electric energy meter Download PDFInfo
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- CN104077907A CN104077907A CN201410326162.4A CN201410326162A CN104077907A CN 104077907 A CN104077907 A CN 104077907A CN 201410326162 A CN201410326162 A CN 201410326162A CN 104077907 A CN104077907 A CN 104077907A
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Abstract
The invention discloses a device and method for forwarding electricity consumption information parameters of an electric energy meter. The method comprises the following steps: mounting the device for forwarding electricity consumption information parameters of the electric energy meter in an original electric energy meter; determining an optical fiber communication mode, a wireless communication mode, a power carrier mode and a 485 communication mode through a communication receiving and setting module; receiving the electricity consumption information sent by an electric system in real time and forwarding the electricity consumption information to a device for receiving electricity consumption parameters and controlling electrical load of a power line carrier by staggering peaks through a power carrier technology so as to control the electrical load by staggering peaks; arranging a single-chip, a power supply module, an optical fiber communication module, a wireless communication module, a power carrier module, an interface circuit, a fault alarming module, a watchdog circuit, a 485 communication module, and a communication receiving and setting module. By virtue of the device and the method, the peak staggering control of the load of a power grid adopting peak load shifting can reach the best state, so that the peak-valley load difference during running of the power grid can be reduced, and the purpose of saving energy and reducing consumption can be achieved.
Description
Technical field
The invention belongs to and extend electric system DSM field, relate in particular to the device and method that a kind of electric energy meter information parameter forwards.
Background technology
Known various electric energy meters are mainly used in the metering of electric flux at present, although carrier intelligent ammeter, there is information reception, forwarding capability, but realize, power information receives, forwarding capability need to change the outfit existing electric energy meter, in addition, carrier intelligent table, without wireless, optical fiber communication receive mode, lacks the connected mode of same electric system 0.4KV distribution communication system.
Dsm: under the support of government regulation and policy; take effectively excitation and guiding measure and suitable function mode; jointly pull together by genco, grid company, ESCO, social intermediary, product vendor, power consumer etc.; improve terminal power consumption efficiency and change power mode; in meeting equally with Electricity Functional, reduce electric quantity consumption and electricity needs; reach and economize on resources and protection of the environment, realize the management activity that social benefit is best, each side is benefited, least cost energy services is carried out.
Peak load shifting: a part of peak load is moved to low-valley interval, thereby the peak load of minimizing operation of power networks is poor, has realized the object of saving the energy.
The control of avoiding the peak hour: according to electric system power information, reduce point, crest segment power consumption, improve the load control mode of paddy section power consumption.The control of avoiding the peak hour comprises the shutoff of avoiding the peak hour, the pressure regulation of avoiding the peak hour, avoids the peak hour and adjust three kinds of modes of ginseng.
Summary of the invention
The device and method that provides a kind of electric energy meter information parameter to forward is provided the object of the embodiment of the present invention, is intended to solve the problem that power information receives, forwarding capability need to change the outfit existing electric energy meter that realizes.
The embodiment of the present invention is to realize like this, the device that electric energy meter information parameter forwards, the device that this electric energy meter information parameter forwards comprises: single-chip microcomputer, power module, optical fiber communication module, wireless communication module, power carrier module and interface circuit, fault alarm module, watchdog circuit and 485 communication modules, communications reception setting module;
Single-chip microcomputer, be connected with power module, power carrier module and interface circuit, fault alarm module, communication module, watchdog circuit, for writing complete control program, the control forwarding capability of realizing that power line carrier system power consumption parameter receives and power load is avoided the peak hour; Power consumption parameter receives with the power load control device of avoiding the peak hour and is connected with single-chip microcomputer, for realizing the power load control of avoiding the peak hour;
Power module, adopts three-terminal regulator block voltage stabilizing, selects Low Drift Temperature voltage stabilizing diode to carry out secondary voltage stabilizing;
Optical fiber communication module, connect with electric system 0.4KV distribution communication system, for calling the optical-fibre communications subroutine of electric energy meter information parameter retransmission unit, receive in real time electric system according to the electricity using at the peak time information of load control and dsm formulation by optical networking;
Wireless communication module, connect with electric system 0.4KV distribution communication system, for calling the wireless telecommunications subroutine of electric energy meter information parameter retransmission unit, receive in real time electric system according to the electricity using at the peak time information of load control and dsm formulation by wireless network;
Power carrier module and interface circuit, pass through I
2clock cable SCL, the data line SDA of C bus are connected with single-chip microcomputer, and peripheral interface circuit comprises power amplification circuit, filtering shaping circuit, resonant circuit and secondary filtering circuit; Power amplification circuit is that the carrier (boc) modulated signals for carrier chip is produced carries out being coupled on line of electric force after power amplification; After carrier wave function is enabled, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave that 0-5V changes, and comprises abundant harmonic wave;
Fault alarm module, is connected with single-chip microcomputer, adopts sound and light alarm, and by light emitting diode, loudspeaker and driving circuit composition, realize sound and light alarm during for the system failure;
485 communication modules, connect with intelligent electric meter communication interface, for calling 485 communication subroutines of electric energy meter information parameter retransmission unit, receive in real time the electricity using at the peak time information that electric system controls according to loading and dsm is formulated from intelligent electric meter;
Watchdog circuit, is connected with single-chip microcomputer, makes program lose or come into endless loop for anti-locking system is disturbed, and causes system in case of system halt, and the hardware circuit adding, to ensure the reliability and stability of system;
Communications reception setting module, is connected with single-chip microcomputer, by two, switch is set and forms; Key assignments 00 is that 485 communications reception patterns receive intelligent meter power information for same intelligent meter communication, and key assignments 01 is radio communication receiving mode, and key assignments 10 is optical fiber communication receiving mode, and key assignments 11 is power line carrier, PLC receiving mode.
Further, this electric energy meter information parameter retransmission unit is installed in electric energy meter, IN1, IN2 are with the first energy meter terminal and the 3rd electric power meter end sub-connection, OUT1, OUT2 are with the second energy meter terminal and the 4th electric power meter end sub-connection, 485 communication interfaces connect with intelligent electric meter interface, fiber optic data communication interface connects with electric system 0.4KV distribution communication system, and wireless communication interface connects with electric system 0.4KV distribution communication system.
Further, this electric energy meter information parameter retransmission unit has been realized multi-modal communications reception by optical fiber communication module, wireless communication module, power carrier module and interface circuit, 485 communication modules, communications reception setting module.
Another object of the present invention is to provide a kind of electric energy meter information parameter retransmission method, the method that this electric energy meter information parameter forwards is by one of communications reception setting module selective light fiber communication pattern, wireless communications mode, power carrier pattern, 485 communication patterns, receive in real time the power information that electric system issues, the receiving trap that utilizes PLC technology to be transmitted to power consumer side is realized the control of avoiding the peak hour of power load.Electric energy meter is by installing electric energy meter information parameter retransmission unit additional, utilize one of communications reception setting module selective light fiber communication pattern, wireless communications mode, power carrier pattern, 485 communication patterns of this device, by electric power 0.4KV distribution communication system, receive in real time electric system according to the electricity using at the peak time information that load is controlled and dsm is formulated, the receiving trap that utilizes PLC technology to be transmitted to power consumer side is realized the control of avoiding the peak hour of power load.
Further, multi-modal communications receives, and adopts power line carrier, PLC to forward.
The device and method that electric energy meter information parameter provided by the invention forwards, in original electric energy meter, install electric energy meter information parameter retransmission unit additional, determine one of optical fiber communication pattern, wireless communications mode, power carrier pattern, 485 communication patterns by communications reception setting module, receive in real time the power information that electric system issues, the receiving trap that utilizes PLC technology to be transmitted to power consumer side is realized the power load control of avoiding the peak hour.The present invention can be used in existing dress electric energy meter to receive the power information that issues of electric system and is transmitted to power line carrier power consumption parameter receives and load is avoided the peak hour control device, the consumer control mode that power consumer is selected, the load that is conducive to ensure electrical network peak load shifting is avoided the peak hour to control and is reached optimum condition.Thereby the peak load that reduces operation of power networks is poor, has realized energy-saving and cost-reducing object.
Brief description of the drawings
Fig. 1 is the structural representation of the electric energy meter that provides of the embodiment of the present invention;
In figure: 1, the first energy meter terminal; 2, the second energy meter terminal; 3, the 3rd energy meter terminal; 4, the 4th energy meter terminal; 5, electric energy meter display screen; 6, electric energy meter information parameter retransmission unit; 7,485 communication interfaces; 8, radio communications interface; 9, fiber optic data communication interface;
Fig. 2 is the apparatus structure schematic diagram that the electric energy meter information parameter that provides of the embodiment of the present invention forwards;
In figure: 10, communications reception setting module; 11,485 communication modules; 12, single-chip microcomputer; 13, optical fiber communication module; 14, wireless communication module; 15, power carrier module and interface circuit; 16, fault alarm module; 17, watchdog circuit; 18, communications reception setting module; 19, power module;
Fig. 3 is power carrier module and the interface circuit figure that the embodiment of the present invention provides.
Fig. 4 is the method flow diagram that the electric energy meter information parameter that provides of the embodiment of the present invention forwards.
Fig. 5 is the process flow diagram of the power line carrier, PLC that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
As shown in Figure 1, this device is installed in electric energy meter, and IN1, the IN2 of device is connected with the 3rd energy meter terminal 3 with the first energy meter terminal 1, and OUT1, OUT2 connect with energy meter terminal the second energy meter terminal 2, the 4th energy meter terminal 4; 485 communication interfaces connect with intelligent electric meter communication interface, and fiber optic data communication interface connects with electric system 0.4KV distribution communication system, and wireless communication interface connects with electric system 0.4KV distribution communication system.
As shown in Figure 2, be a kind of electric energy meter information parameter retransmission unit providing for electric system dsm.Device hardware comprises that single-chip microcomputer 12, power module 19, optical fiber communication module 13, wireless communication module 14, power 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 adopts three-terminal regulator block voltage stabilizing, selects Low Drift Temperature voltage stabilizing diode to carry out secondary voltage stabilizing; Fault alarm module 16 adopts sound and light alarm, by light emitting diode, and loudspeaker and driving circuit composition, in the time of the system failure, single-chip microcomputer 12 sends failure alarm signal, and driving LED light emitting diode and loudspeaker are realized to sound and light alarm.Watchdog circuit 17 is to make program lose or come into endless loop for anti-locking system is disturbed, and causes system in case of system halt, and the hardware circuit adding, to ensure the reliability and stability of system.The X5045 that the present invention adopts is a kind of programmable circuit that integrates house dog, voltage monitoring and tri-kinds of functions of Serial E 2PROM.Communications reception setting module arranges switch by two and forms.Key assignments 00 is that 485 communications reception patterns receive intelligent meter power information for same intelligent meter communication, and key assignments 01 is radio communication receiving mode, and key assignments 10 is optical fiber communication receiving mode, and key assignments 11 is power line carrier, PLC receiving mode;
Single-chip microcomputer, be connected with power module, power carrier module and interface circuit, fault alarm module, communication module, watchdog circuit, for writing complete control program, the control forwarding capability of realizing that power line carrier system power consumption parameter receives and power load is avoided the peak hour; Power consumption parameter receives with the power load control device of avoiding the peak hour and is connected with single-chip microcomputer, for realizing the power load control of avoiding the peak hour;
Power module, adopts three-terminal regulator block voltage stabilizing, selects Low Drift Temperature voltage stabilizing diode to carry out secondary voltage stabilizing;
Optical fiber communication module, connect with electric system 0.4KV distribution communication system, for calling the optical-fibre communications subroutine of electric energy meter information parameter retransmission unit, receive in real time electric system according to the electricity using at the peak time information of load control and dsm formulation by optical networking;
Wireless communication module, connect with electric system 0.4KV distribution communication system, for calling the wireless telecommunications subroutine of electric energy meter information parameter retransmission unit, receive in real time electric system according to the electricity using at the peak time information of load control and dsm formulation by wireless network;
Power carrier module and interface circuit, pass through I
2clock cable SCL, the data line SDA of C bus are connected with single-chip microcomputer, and peripheral interface circuit comprises power amplification circuit, filtering shaping circuit, resonant circuit and secondary filtering circuit; Power amplification circuit is that the carrier (boc) modulated signals for carrier chip is produced carries out being coupled on line of electric force after power amplification; After carrier wave function is enabled, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave that 0-5V changes, and comprises abundant harmonic wave;
Fault alarm module, is connected with single-chip microcomputer, adopts sound and light alarm, and by light emitting diode, loudspeaker and driving circuit composition, realize sound and light alarm during for the system failure;
485 communication modules, connect with intelligent electric meter communication interface, for calling 485 communication subroutines of electric energy meter information parameter retransmission unit, receive in real time the electricity using at the peak time information that electric system controls according to loading and dsm is formulated from intelligent electric meter;
Watchdog circuit, is connected with single-chip microcomputer, makes program lose or come into endless loop for anti-locking system is disturbed, and causes system in case of system halt, and the hardware circuit adding, to ensure the reliability and stability of system;
Communications reception setting module, is connected with single-chip microcomputer, by two, switch is set and forms; Key assignments 00 is that 485 communications reception patterns receive intelligent meter power information for same intelligent meter communication, and key assignments 01 is radio communication receiving mode, and key assignments 10 is optical fiber communication receiving mode, and key assignments 11 is power line carrier, PLC receiving mode.
As shown in Figure 3, be power carrier module and the interface circuit that power line carrier, PLC function is provided for device.IN1, IN2 in figure connects with energy meter terminal 1,3, and OUT1, OUT2 connect with energy meter terminal 2,4.In Fig. 3, carrier chip is connected with single-chip microcomputer by SCL, SDA, and its peripheral interface circuit comprises power amplification circuit, filtering shaping circuit, resonant circuit and secondary filtering circuit.Power amplification circuit is that the carrier (boc) modulated signals for carrier chip is produced carries out being coupled on line of electric force after power amplification.After carrier wave function is enabled, carrier signal is exported by PSK_out, and waveform is the square wave that 0-5V changes, and comprises abundant harmonic wave; After push-pull circuit carries out power amplification, after the square-wave signal that PSK_out is ordered is exaggerated, complete after shaping filter through inductance L 1, capacitor C 3, then be coupled on low-voltage power line by pickup coil T2, bilateral diode D87 shields.In circuit, D3, D4 play clamped effect, absorb the spike interference on low-voltage power line.In the receiving loop of Fig. 3, effectively attenuation by absorption when R3 transmits by force in reception this locality; Inductance L 2, capacitor C 6 form shunt-resonant circuit, and resonance for 120KHz designs, completes the bandpass filtering to useful signal with centre frequency; Good frequency-selective circuit can effectively improve carrier wave receiving sensitivity.The effect of diode D5, D6 is to clamp down at ± 0.7V receiving the current potential of signal.Reception signal is incorporated into chip internal and carries out Frequency mixing processing after capacitor C 4, and SIGIN moves to 2.5V ± 0.7V after drawing on inside, is beneficial to subsequent treatment.In the post processing circuitry of carrier signal, the carrier signal receiving after parallel resonance enters chip through SIGIN pin.Because ceramic filter passband can only be near intermediate frequency, so the 120KHz signal receiving and inner 600KHz local oscillation signal are carried out mixing by chip internal, obtain the difference frequency signal of 80KHz intermediate-frequency bandwidth.Mixed frequency signal is input to the input pin of ceramic filter by FLTI pin, the FLTO pin of sending again chip after ceramic filter filtering back to carries out inner limited range enlargement.Then carried out the reduction of valid data by the hardware de-spreading circuit in chip; After data despreading completes, data bit is latched into data pins, produces synchronizing signal HEAD simultaneously;
Power amplification circuit is that the carrier (boc) modulated signals for carrier chip is produced carries out being coupled on line of electric force after power amplification.After carrier wave function is enabled, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave that 0-5V changes, and comprises abundant harmonic wave; After push-pull circuit carries out power amplification, the square-wave signal that delivery outlet PSK_out is ordered is exaggerated, and in circuit, D3, D4 play clamped effect, absorb the spike interference on low-voltage power line.Height, the source current providing capability of the size of carrier transmit power and VHH power supply amplitude are closely related, improve power supply amplitude, increase power in certain limit, extend communication distance thereby can effectively strengthen emissive power.Because the signal waveform after amplifying is rich in harmonic wave, for reducing the harmonic pollution to electrical network, need carry out filter shape.In circuit, inductance L 1, capacitor C 3 complete after shaping filter, then are coupled on low-voltage power line by pickup coil T2, and bilateral diode D87 shields.
As shown in Figure 4, the method flow diagram that electric energy meter information parameter of the present invention forwards; Determine the receive mode of electric energy meter information parameter retransmission unit by the pattern control word of communications reception setting module, calling corresponding communicator program receives electric system power information after storage, call power line carrier, PLC service subprogram power information is transmitted to power consumer side device, control power load start and stop parameter, thereby regulate electricity using at the peak time amount, realize the control of need for electricity side management.Allomeric function is coordinated and is realized by master routine, optical-fibre communications subroutine, wireless telecommunications subroutine, 485 communication subroutines, power line carrier, PLC service subprogram etc.
The power line carrier, PLC clinical procedure of system as shown in Figure 5; Judge carrier communication interrupt request.When power line carrier, PLC is during in accepting state, carrier communication control module solution expands after 1bit data, produces once and interrupts.When reception, first adopt 16bits receive window, 1bit sliding type to come synchronizing frame head 0X09, the 0XAF of received communication, after frame head receives successfully, follow-up data intercepts by the mode of a byte of every 8bits, obtains the valid data that transmit; In receiving course, carry out address differentiation, length reception, verification calculating by relevant communication protocol.The identical module in address is replied the data that meet communication protocol, after proceed to transmission state.When carrier communication is in the time sending state.Give an order or the replying of take over party for the calling party of carrier communication.Carrier communication control module sends after the spread spectrum data of 1bit, automatically produces once and interrupts, and allows lower 1bit data to send.According to catching and synchronizing process needs, first send at least complete " 1 " of 40bits; Then press bit and send synchronizing frame head 0X09,0XAF; Press bit according to user's relevant communication protocol afterwards and send the bytes such as mailing address, data length, data volume, verification.After data are all sent completely, carrier module can proceed to reception state.But for to guarantee that last bit of data to be sent sends successfully, after must once sending an interrupt to, just can switch carriers send state to receiving state on sending after last 1bit data by the time.Before carrier wave sends and total data is not sent completely, CPU must write " A2H " to PLM_RST register in time, and counter is resetted, and the incoming carrier in advance of avoiding automatically reseting receives state.
Useful result of the present invention has been to provide electric energy meter message retransmission unit.Existing dress electric energy meter be can be used in receive the power information that issues of electric system and is transmitted to power line carrier power consumption parameter receives and load is avoided the peak hour control device, the consumer control mode of avoiding the peak hour that power consumer is selected, the load that is conducive to ensure electrical network peak load shifting is avoided the peak hour to control and is reached optimum condition.Thereby the peak load that reduces operation of power networks is poor, has realized energy-saving and cost-reducing object.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. the device that electric energy meter information parameter forwards, it is characterized in that, the device that this electric energy meter information parameter forwards comprises: single-chip microcomputer, power module, optical fiber communication module, wireless communication module, power carrier module and interface circuit, fault alarm module, watchdog circuit and 485 communication modules, communications reception setting module;
Single-chip microcomputer, be connected with power module, power carrier module and interface circuit, fault alarm module, communication module, watchdog circuit, be used for realizing that power line carrier system power consumption parameter receives and the power load control forwarding capability of avoiding the peak hour, power consumption parameter receives with the power load control device of avoiding the peak hour and is connected with single-chip microcomputer, for realizing the power load control of avoiding the peak hour;
Power module, adopts three-terminal regulator block voltage stabilizing, selects Low Drift Temperature voltage stabilizing diode to carry out secondary voltage stabilizing;
Optical fiber communication module, be connected with electric power 0.4KV distribution communication system, for calling the optical-fibre communications subroutine of electric energy meter information parameter retransmission unit, receive in real time electric system according to the electricity using at the peak time information of load control and dsm formulation by optical networking;
Wireless communication module, be connected with electric power 0.4KV distribution communication system, for calling the wireless telecommunications subroutine of electric energy meter information parameter retransmission unit, receive in real time electric system according to the electricity using at the peak time information of load control and dsm formulation by wireless network;
Power carrier module and interface circuit, pass through I
2clock cable SCL, the data line SDA of C bus are connected with single-chip microcomputer, and peripheral interface circuit comprises power amplification circuit, filtering shaping circuit, resonant circuit and secondary filtering circuit; Power amplification circuit is that the carrier (boc) modulated signals for carrier chip is produced carries out being coupled on line of electric force after power amplification; After carrier wave function is enabled, carrier signal is exported by delivery outlet PSK_out, and waveform is the square wave that 0-5V changes, and comprises abundant harmonic wave;
Fault alarm module, is connected with single-chip microcomputer, adopts sound and light alarm, and by light emitting diode, loudspeaker and driving circuit composition, realize sound and light alarm during for the system failure;
485 communication modules, connect with intelligent electric meter communication interface, for calling 485 communication subroutines of electric energy meter information parameter retransmission unit, 485 communication subroutines refer to and from intelligent electric meter, receive in real time the electricity using at the peak time information that electric system controls according to loading and dsm is formulated;
Watchdog circuit, is connected with single-chip microcomputer, makes program loss or come into endless loop for anti-locking system is disturbed;
Communications reception setting module, is connected with single-chip microcomputer, by two, switch is set and forms; Key assignments 00 is that 485 communications reception patterns receive intelligent meter power information for same intelligent meter communication, and key assignments 01 is radio communication receiving mode, and key assignments 10 is optical fiber communication receiving mode, and key assignments 11 is power line carrier, PLC receiving mode.
2. electric energy meter information parameter retransmission unit as claimed in claim 1, it is characterized in that: this electric energy meter information parameter retransmission unit is installed in electric energy meter, IN1, IN2 are with the first energy meter terminal and the 3rd electric power meter end sub-connection, OUT1, OUT2 are with the second energy meter terminal and the 4th electric power meter end sub-connection, 485 communication interfaces connect with intelligent electric meter intercommunication interface, fiber optic data communication interface connects with electric system 0.4KV distribution communication system, and wireless communication interface connects with electric system 0.4KV distribution communication system.
3. electric energy meter information parameter retransmission unit as claimed in claim 1, it is characterized in that, this electric energy meter information parameter retransmission unit has been realized multi-modal communications reception by optical fiber communication module, wireless communication module, power carrier module and interface circuit, 485 communication modules, communications reception setting module.
4. electric energy meter information parameter retransmission unit as claimed in claim 1, is characterized in that, power amplification circuit is that the carrier (boc) modulated signals for carrier chip is produced carries out being coupled on line of electric force after power amplification.
5. an electric energy meter information parameter retransmission method, it is characterized in that, the method that this electric energy meter information parameter forwards is by one of communications reception setting module selective light fiber communication pattern, wireless communications mode, power carrier pattern, 485 communication patterns, receive in real time the power information that electric system issues, the control of avoiding the peak hour of control device realizes power load that the power line carrier power consumption parameter of utilizing PLC technology to be transmitted to power consumer side receives and load is avoided the peak hour.
6. electric energy meter information parameter retransmission method as claimed in claim 5, is characterized in that, this electric energy meter information parameter retransmission method multi-modal communications receives, and adopts power line carrier, PLC to forward.
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Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: State Grid Corporation of China Applicant after: State Grid Tianjin Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: State Grid Tianjin Electric Power Company |
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Application publication date: 20141001 |