CN103592580A - Insulator haze and pollution flashover online monitoring system and method - Google Patents
Insulator haze and pollution flashover online monitoring system and method Download PDFInfo
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- CN103592580A CN103592580A CN201310490133.7A CN201310490133A CN103592580A CN 103592580 A CN103592580 A CN 103592580A CN 201310490133 A CN201310490133 A CN 201310490133A CN 103592580 A CN103592580 A CN 103592580A
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Abstract
The invention discloses an insulator haze and pollution flashover online monitoring system and method. The system comprises a monitoring terminal and a monitoring device. Currents of a capacitance medium and leaked currents of an insulator are obtained through measurement at first; two signals of a single chip microcomputer are adopted and undergo computing of a formula with a solidified program to obtain a flashover value representing insulator arc-over; the flashover value is compared with a given threshold value and whether two classes of flashover alarms 'caution or danger' are given or not is judged according to a comparison result; a program for monitoring a mainframe is used for displaying a real-time monitoring result and a history data curve on a man-machine interface. On one hand, the haze and the pollution degree can be known by people in a duty room, on the other hand, a GSM short message module and a wireless communication manner are adopted for saving trouble due to remote communication and laying of wires; solar energy and a storage battery are used for supplying power and a high-voltage pulse generation manner and the low-power-consumption design are adopted for ensuring that the equipment can operate in an all-weather mode.
Description
Technical field
The present invention relates to safe operation of electric network field, relate in particular to a kind of haze and filthy factor of preventing and cause insulator external insulation that insulator haze and pollution flashover on-line monitoring system and the method that edge flashing or air are ionized the generation of disruptive discharge accident occurs not.
Background technology
Due to the sane fast development along with China's economy, electricity needs increases day by day on the one hand, and power system transmission line electric pressure improves constantly, electrical network scale constantly expands, AC and DC networking is on the increase, and the pollution source of each department are on the increase on the other hand, atmospheric pollution aggravation.The insulator surface being exposed under filthy condition can deposit filth, when meeting the unfavorable meteorologies such as dense fog, drizzle, sleet, condensation, rime, snow rime, ice-melt, snow melt, easily causes grid pollution flashover accident.According to statistics, in electric network fault, insulator breakdown accounts for the out of order first place of transmission line of electricity, wherein thunderbolt causes trip-out rate that insulator arc-over causes the more than 60% of the total trip-out rate in road of wanting that the line is busy, and external insulation pollution flashover causes electric quantity loss, be 9 ~ 10 times of damage to crops caused by thunder, while being deposited on the weather actings in conjunction such as the dunghill of high pressure insulator surface and mist, haze, easily there is insulator pollution flashover, affect the safe operation of power circuit.
Except insulator arc-over causes tripping operation, according to statistics in the last few years, when puncturing the edge flashing of insulator chain surface (rather than along) because haze causes 220kV, 500kV ultra-high-tension power transmission line air insulation and causing the accident of line tripping, also there are generation, the safe operation of serious threat electric system.
For haze, monitoring mainly contains following 2 kinds with pollution flashover device both at home and abroad at present:
1. detect PM2.5: in monitoring air PM2.5 particle number as the quantification of atmospheric haze degree, this method does not conform to rule to the mechanism of insulator arc-over in electrical network with result, and the testing result of PM2.5 can not be as the foundation that judges whether insulator arc-over to occur or air ionization is punctured.
2. insulator contamination monitoring device: by measuring insulator leakage current, judge whether insulator the foundation that pollution flashover discharges occurs.This device can only judge filthy single factors, and haze factor is not taken into account.
But above these warning devices all exist some problems, can not realize the basis for estimation that causes insulator arc-over and air ionization to puncture in haze and filthy composite factor.
Summary of the invention
In order to solve the technical matters existing in background technology, the present invention proposes a kind of can realization and just can know haze and pollution level at duty room, without carrying out transformer station and line inspection, just can know whether insulator exists pollution flashover or air ionization to puncture dangerous insulator haze and pollution flashover on-line monitoring system and the method for tripping operation.
First aspect present invention provides a kind of insulator haze and pollution flashover on-line monitoring system, comprise monitoring terminal and supervising device, described monitoring terminal comprises solar powered module, capacitor dielectric current collecting device, insulator leakage current harvester, single-chip microcomputer and the GSM SMS module that signal connects.
Described monitoring terminal is connected by wireless network signal with supervising device.
Described solar powered module is described monitoring terminal power supply.
Described capacitor dielectric current collecting device is for measuring the electric current of capacitor dielectric.
Described insulator leakage current harvester is for measuring the leakage current of insulator.
Described single-chip microcomputer is for gathering after the current signal of capacitor dielectric and the leakage current signal of insulator, after the formula calculating of program Solidification, draw the mist sudden strain of a muscle value of reflection insulator arc-over, relatively mist sudden strain of a muscle value and set threshold value, and dodge warning according to the two-stage mist that result relatively determines whether to make " note, danger ".
The measure and transmit that described GSM SMS module is used for receiving the current signal of capacitor dielectric and the leakage current signal of insulator is to supervising device.
Described supervising device comprises GSM short message terminal equipment and monitoring host computer, and wherein, described GSM short message terminal equipment is worth for the mist sudden strain of a muscle receiving by GSM SMS module after calculating from single-chip microcomputer; Described monitoring host computer is for showing in man-machine interface Real-Time Monitoring result and the historical data curve that GSM short message terminal equipment receives.
Further, described capacitor dielectric current collecting device comprises capacitor dielectric current sensor, relay, fan and in order to the high-voltage pulse power source of working power to be provided, described capacitor dielectric current sensor is connected with described high-voltage pulse power source, by Control fan, air is drawn into the current signal that obtains capacitor dielectric in capacitive means.
Further, described high-voltage pulse power source comprises reference voltage unit, ADC converting unit, single-chip microcomputer processing unit, AD9851 unit, broad band amplifier unit and the output unit that signal connects.
Further, described insulator leakage current harvester comprises insulator leakage current sensor and is arranged on the collector ring on insulator chain.
Further, described solar powered module comprises controller for solar and the solar panel being connected with the input of described controller for solar, and the output of described controller for solar comprises the 5V output after the DC-DC conversion voltage stabilizer that 12V directly exports and arrive 5V through 12V.
Further, described solar powered module also comprises and the diconnected accumulator of controller for solar, is that described monitoring terminal power supply and the electric capacity by controller for solar, solar panel collected when capacity of the accumulator is discontented with are filled with in accumulator when not enough for the electric capacity collected when solar panel.
Preferably, mist dodges to report to the police and adopts monitoring host computer to carry out buzzing.
Second aspect present invention provides a kind of insulator haze and pollution flashover on-line monitoring method, comprises a kind of insulator haze and pollution flashover on-line monitoring system as described above, specifically comprises the following steps:
S1: capacitor dielectric current sensor is connected to high-voltage pulse power source, by Control fan, air is drawn in capacitive means, measure the electric current of capacitor dielectric; Simultaneously:
S2: by the collector ring light-coupled isolation being installed on insulator chain, measured the leakage current of insulator by insulator leakage current sensor;
S3: adopt single-chip microcomputer to gather the current signal of capacitor dielectric and the leakage current signal of insulator, after the formula calculating of program Solidification, draw the mist sudden strain of a muscle value of a reflection insulator arc-over, relatively mist sudden strain of a muscle value and set threshold value, and dodge warning according to the two-stage mist that result relatively determines whether to make " note, danger ";
S4: by GSM SMS module, the measurement data of the leakage current signal of the current signal of capacitor dielectric and insulator is sent to the GSM short message terminal equipment of supervising device, shows Real-Time Monitoring result and historical data curve by the program of monitoring host computer in man-machine interface.
Further, in described step S4, if mist sudden strain of a muscle value is greater than threshold value, sends " danger " mist and dodge warning; If mist sudden strain of a muscle value equals threshold value, send " attention " mist and dodge warning.
Based on disclosing of technique scheme, the present invention can realize at duty room just can know haze and pollution level, without carrying out transformer station and line inspection, just can know whether insulator exists pollution flashover or air ionization to puncture the danger of tripping operation; Realize to notice that dodging warning ，Wei equipment operation management unit with dangerous two-stage mist takes brownout operation or arrange the measures such as insulator cleaning plan as with reference to foundation; The wireless communication mode of GSM SMS module, removes telecommunication from and arranges wire and trouble; Sun power and storage battery power supply, high-voltage pulse occurring mode and low power dissipation design, can guarantee equipment round-the-clock running.
Accompanying drawing explanation
Fig. 1 is the insulator haze that proposes of the present invention and the fundamental diagram of pollution flashover on-line monitoring system;
Fig. 2 is the external structure schematic diagram of the monitoring terminal of insulator haze provided by the invention and pollution flashover on-line monitoring system;
Fig. 3 is the structured flowchart of the monitoring terminal of this insulator haze provided by the invention and pollution flashover on-line monitoring system;
Fig. 4 is the fundamental diagram of the solar powered module of insulator haze provided by the invention and pollution flashover on-line monitoring system;
Fig. 5 is the fundamental diagram of the high-voltage pulse power source of insulator haze provided by the invention and pollution flashover on-line monitoring system;
Fig. 6 is the workflow diagram of insulator haze provided by the invention and pollution flashover on-line monitoring method;
Fig. 7 is the monitoring host computer program flow diagram of insulator haze provided by the invention and pollution flashover on-line monitoring method.
drawing reference numeral explanation
1-monitoring terminal, the solar powered module of 11-, 111-controller for solar, 112-solar panel, 113-aerial condutor, 114-steel tower, 115-DC-DC changes voltage stabilizer, 116-accumulator, 12-capacitor dielectric current collecting device, 121-high-voltage pulse power source, 211-reference voltage unit, 212-ADC converting unit, 213-single-chip microcomputer processing unit, 214-AD9851 unit, 215-broad band amplifier unit, 216-output unit, 13-insulator leakage current harvester, 14-single-chip microcomputer, 15-GSM SMS module, 2-supervising device, 21-GSM short message terminal equipment, 22-monitoring host computer.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
Refer to Fig. 1 and Fig. 2, a kind of insulator haze and pollution flashover on-line monitoring system, comprise monitoring terminal 1 and supervising device 2, please be connected by wireless network 3 signals with supervising device 2 by described monitoring terminal 1.
Refer to Fig. 1 to Fig. 3, described monitoring terminal 1 comprises solar powered module 11, capacitor dielectric current collecting device 12, insulator leakage current harvester 13, the single-chip microcomputer 14 and GSM SMS module 15 that signal connects.
Please refer to Fig. 1, Fig. 3 and Fig. 4, described solar powered module 11 is described monitoring terminal 1 power supply, it comprises the aerial condutor 113 and steel tower 114 of controller for solar 111 and the solar panel 112 being connected with the input of described controller for solar and auxiliary described solar panel mobile phone sunshine thereof, and described solar powered module 11 also comprises and the diconnected accumulator 116 of controller for solar 111, for being that described monitoring terminal 1 power supply and the electric capacity by controller for solar, solar panel 112 collected when accumulator 116 electric capacitys are discontented with are filled with in accumulator 116 when electric capacity that solar panel 112 is collected is not enough, the output of described controller for solar 111 comprises the 5V output after the DC-DC conversion voltage stabilizer 115 that 12V directly exports and arrive 5V through 12V.
Please refer to Fig. 3 and Fig. 5, described capacitor dielectric current collecting device 12 is for measuring the electric current of capacitor dielectric, it comprise capacitor dielectric current sensor (not shown), relay (not shown), fan (not shown) with in order to the high-voltage pulse power source 121 of working power to be provided, described capacitor dielectric current sensor is connected with described high-voltage pulse power source, by Control fan, air is drawn into the current signal that obtains capacitor dielectric in capacitive means.
Please refer to Fig. 5, described high-voltage pulse power source 121 comprises reference voltage unit 211, ADC converting unit 212, single-chip microcomputer processing unit 213, AD9851 unit 214, broad band amplifier unit 215 and the output unit 216 that signal connects; What wherein, described single-chip microcomputer processing unit 213 adopted is Atmel mega48 single-chip microcomputer.
Please refer to Fig. 3, described insulator leakage current harvester 13 is for measuring the leakage current of insulator, and it comprises insulator leakage current sensor (not shown) and is arranged on the collector ring (not shown) on insulator chain.
Please refer to Fig. 3, after the leakage current signal of described single-chip microcomputer 14 for the insulator that gathers the current signal of the capacitor dielectric measuring through described capacitor dielectric current collecting device 12 and measure through described insulator leakage current harvester 13, after the formula calculating of program Solidification, draw the mist sudden strain of a muscle value of reflection insulator arc-over, relatively mist sudden strain of a muscle value and set threshold value, and dodge warning according to the two-stage mist that result relatively determines whether to make " note, danger "; Wherein, described single-chip microcomputer 14 is Atmel mega48 single-chip microcomputer, and mist dodges to report to the police and adopts monitoring host computer to carry out buzzing.
Please refer to Fig. 1 and Fig. 3, described GSM SMS module 15 for the measure and transmit that receives the current signal of capacitor dielectric and the leakage current signal of insulator to supervising device 2.
Please refer to Fig. 1 and Fig. 3, described supervising device 2 comprises GSM short message terminal equipment 21 and monitoring host computer 22, and wherein, described GSM short message terminal equipment 21 is worth for the mist sudden strain of a muscle receiving by GSM SMS module 15 after calculating from single-chip microcomputer 14; Described monitoring host computer 22 is for showing in man-machine interface Real-Time Monitoring result and the historical data curve that GSM short message terminal equipment 21 receives.
Please refer to Fig. 6, the on-line monitoring method based on above-mentioned insulator haze and pollution flashover on-line monitoring system, specifically comprises the following steps:
S1: capacitor dielectric current sensor is connected to high-voltage pulse power source, by Control fan, air is drawn in capacitive means, measure the electric current of capacitor dielectric; Simultaneously:
S2: by the collector ring light-coupled isolation being installed on insulator chain, measured the leakage current of insulator by insulator leakage current sensor;
S3: adopt single-chip microcomputer to gather the current signal of capacitor dielectric and the leakage current signal of insulator, after the formula calculating of program Solidification, draw the mist sudden strain of a muscle value of a reflection insulator arc-over, relatively mist sudden strain of a muscle value and set threshold value, and dodge warning according to the two-stage mist that result relatively determines whether to make " note, danger ";
S4: by GSM SMS module, the measurement data of the leakage current signal of the current signal of capacitor dielectric and insulator is sent to the GSM short message terminal equipment of supervising device, shows Real-Time Monitoring result and historical data curve by the program of monitoring host computer in man-machine interface.
Please refer to Fig. 7, described monitoring host computer 22 comprises three kinds of patterns, be respectively manual mode, timing mode and automatic mode, wherein, automatic mode is to receive mist that GSM short message terminal equipment 21 uploads automatically to dodge automatically to start after Value Data and process storage and show and obtain data, then compare mist sudden strain of a muscle value and set threshold value, if being greater than threshold value, mist sudden strain of a muscle value starts danger alarm signal, show dangerous tip figure computer buzzing, if equaling threshold value, mist sudden strain of a muscle value starts attention alerting signal, if mist sudden strain of a muscle value is less than after threshold value sends shutdown signal and closes demonstration store status, during manual mode, also need to start to start storage demonstration startup after enabling signal.
To sum up, the present invention can realize at duty room just can know haze and pollution level, without carrying out transformer station and line inspection, just can know whether insulator exists pollution flashover or air ionization to puncture the danger of tripping operation; Realize to notice that dodging warning ，Wei equipment operation management unit with dangerous two-stage mist takes brownout operation or arrange the measures such as insulator cleaning plan as with reference to foundation; The wireless communication mode of GSM SMS module, removes telecommunication from and arranges wire and trouble; Sun power and storage battery power supply, high-voltage pulse occurring mode and low power dissipation design, can guarantee equipment round-the-clock running.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. an insulator haze and pollution flashover on-line monitoring system, it is characterized in that, comprise monitoring terminal and supervising device, described monitoring terminal comprises solar powered module, capacitor dielectric current collecting device, insulator leakage current harvester, single-chip microcomputer and the GSM SMS module that signal connects, wherein:
Solar powered module is described monitoring terminal power supply;
Capacitor dielectric current collecting device, for measuring the electric current of capacitor dielectric;
Insulator leakage current harvester, for measuring the leakage current of insulator;
Single-chip microcomputer, for gathering after the current signal of capacitor dielectric and the leakage current signal of insulator, after the formula calculating of program Solidification, draw the mist sudden strain of a muscle value of reflection insulator arc-over, relatively mist sudden strain of a muscle value and set threshold value, and dodge warning according to the two-stage mist that result relatively determines whether to make " note, danger ";
GSM SMS module, for the measure and transmit that receives the current signal of capacitor dielectric and the leakage current signal of insulator to supervising device;
Described supervising device comprises GSM short message terminal equipment and monitoring host computer, wherein:
GSM short message terminal equipment, is worth for the mist sudden strain of a muscle receiving by GSM SMS module after calculating from single-chip microcomputer;
Monitoring host computer, for showing in man-machine interface Real-Time Monitoring result and the historical data curve that GSM short message terminal equipment receives.
2. a kind of insulator haze according to claim 1 and pollution flashover on-line monitoring system, is characterized in that, described monitoring terminal is connected by wireless network signal with supervising device.
3. a kind of insulator haze according to claim 1 and pollution flashover on-line monitoring system, it is characterized in that, described capacitor dielectric current collecting device comprises capacitor dielectric current sensor, relay, fan and in order to the high-voltage pulse power source of working power to be provided, described capacitor dielectric current sensor is connected with described high-voltage pulse power source, by Control fan, air is drawn into the current signal that obtains capacitor dielectric in capacitive means.
4. a kind of insulator haze according to claim 3 and pollution flashover on-line monitoring system, it is characterized in that, described high-voltage pulse power source comprises reference voltage unit, ADC converting unit, single-chip microcomputer processing unit, AD9851 unit, broad band amplifier unit and the output unit that signal connects.
5. a kind of insulator haze according to claim 1 and pollution flashover on-line monitoring system, is characterized in that, described insulator leakage current harvester comprises insulator leakage current sensor and is arranged on the collector ring on insulator chain.
6. a kind of insulator haze according to claim 1 and pollution flashover on-line monitoring system, it is characterized in that, described solar powered module comprises controller for solar and the solar panel being connected with the input of described controller for solar, and the output of described controller for solar comprises the 5V output after the DC-DC conversion voltage stabilizer that 12V directly exports and arrive 5V through 12V.
7. a kind of insulator haze according to claim 1 and pollution flashover on-line monitoring system, it is characterized in that, described solar powered module also comprises and the diconnected accumulator of controller for solar, is that described monitoring terminal power supply and the electric capacity by controller for solar, solar panel collected when capacity of the accumulator is discontented with are filled with in accumulator when not enough for the electric capacity collected when solar panel.
8. a kind of insulator haze according to claim 1 and pollution flashover on-line monitoring system, is characterized in that, mist dodges to report to the police and adopts monitoring host computer to carry out buzzing.
9. insulator haze and a pollution flashover on-line monitoring method, is characterized in that, comprises if the claims 1 are to a kind of insulator haze claimed in claim 8 and pollution flashover on-line monitoring system, comprises the following steps:
S1: capacitor dielectric current sensor is connected to high-voltage pulse power source, by Control fan, air is drawn in capacitive means, measure the electric current of capacitor dielectric; Simultaneously:
S2: by the collector ring light-coupled isolation being installed on insulator chain, measured the leakage current of insulator by insulator leakage current sensor;
S3: adopt single-chip microcomputer to gather the current signal of capacitor dielectric and the leakage current signal of insulator, after the formula calculating of program Solidification, draw the mist sudden strain of a muscle value of a reflection insulator arc-over, relatively mist sudden strain of a muscle value and set threshold value, and dodge warning according to the two-stage mist that result relatively determines whether to make " note, danger ";
S4: by GSM SMS module, the measurement data of the leakage current signal of the current signal of capacitor dielectric and insulator is sent to the GSM short message terminal equipment of supervising device, shows Real-Time Monitoring result and historical data curve by the program of monitoring host computer in man-machine interface.
10. a kind of insulator haze according to claim 9 and pollution flashover on-line monitoring method, is characterized in that, in described step S4, if mist sudden strain of a muscle value is greater than threshold value, sends " danger " mist and dodge warning; If mist sudden strain of a muscle value equals threshold value, send " attention " mist and dodge warning.
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| CN104201586A (en) * | 2014-08-26 | 2014-12-10 | 国家电网公司 | Rapid recovery method of composite outer insulation running performance of electric transmission and transformation equipment in hazy weather |
| CN104764983A (en) * | 2015-03-18 | 2015-07-08 | 胡妍 | Insulator detection device |
| CN105067975A (en) * | 2015-08-03 | 2015-11-18 | 国网天津市电力公司 | Test method for analyzing influences imposed on external insulation of power transmission and transformation equipment by haze |
| CN106782943A (en) * | 2016-12-07 | 2017-05-31 | 国网山东省电力公司电力科学研究院 | A kind of sub- puncture device of Intelligent insulation |
| CN106814293A (en) * | 2017-03-10 | 2017-06-09 | 国网山东省电力公司龙口市供电公司 | A kind of insulator contamination monitoring device and its method |
| CN107037308A (en) * | 2017-05-16 | 2017-08-11 | 国网新疆电力公司昌吉供电公司 | Insulator electric leakage remote alarming device |
| CN110989037A (en) * | 2019-10-29 | 2020-04-10 | 贵州师范学院 | Power grid microclimate disaster monitoring and early warning system and early warning method thereof |
| CN112526301A (en) * | 2020-11-30 | 2021-03-19 | 广东电网有限责任公司佛山供电局 | High-conductivity under-fog line impact tolerance characteristic test platform and evaluation method |
| CN113484697A (en) * | 2021-05-19 | 2021-10-08 | 北京宏优科技发展有限公司 | Insulator leakage analysis system and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104201586B (en) * | 2014-08-26 | 2016-02-10 | 国家电网公司 | Power transmission and transforming equipment composite outer insulation runnability quick recovery method under haze weather |
| CN104764983A (en) * | 2015-03-18 | 2015-07-08 | 胡妍 | Insulator detection device |
| CN105067975A (en) * | 2015-08-03 | 2015-11-18 | 国网天津市电力公司 | Test method for analyzing influences imposed on external insulation of power transmission and transformation equipment by haze |
| CN105067975B (en) * | 2015-08-03 | 2018-06-26 | 国网天津市电力公司 | A kind of test method analyzed haze and influenced on power transmission and transformation equipment outer insulation |
| CN106782943A (en) * | 2016-12-07 | 2017-05-31 | 国网山东省电力公司电力科学研究院 | A kind of sub- puncture device of Intelligent insulation |
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| CN106814293A (en) * | 2017-03-10 | 2017-06-09 | 国网山东省电力公司龙口市供电公司 | A kind of insulator contamination monitoring device and its method |
| CN107037308A (en) * | 2017-05-16 | 2017-08-11 | 国网新疆电力公司昌吉供电公司 | Insulator electric leakage remote alarming device |
| CN110989037A (en) * | 2019-10-29 | 2020-04-10 | 贵州师范学院 | Power grid microclimate disaster monitoring and early warning system and early warning method thereof |
| CN112526301A (en) * | 2020-11-30 | 2021-03-19 | 广东电网有限责任公司佛山供电局 | High-conductivity under-fog line impact tolerance characteristic test platform and evaluation method |
| CN113484697A (en) * | 2021-05-19 | 2021-10-08 | 北京宏优科技发展有限公司 | Insulator leakage analysis system and method |
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Owner name: RIZHAO POWER SUPPLY COMPANY, STATE GRID SHANDONG E Effective date: 20140122 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: RIZHAO POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER COMPANY Effective date: 20140122 |
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Free format text: CORRECT: ADDRESS; FROM: 276800 RIZHAO, SHANDONG PROVINCE TO: 100031 XICHENG, BEIJING |
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Effective date of registration: 20140122 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Rizhao Power Supply Company of State Grid Shandong Province Electric Power Company Address before: 276800, Rizhao Power Supply Company of State Grid Shandong electric power company, No. 68 Yantai Road, Shandong, Rizhao City Applicant before: Rizhao Power Supply Company of State Grid Shandong Province Electric Power Company |
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Application publication date: 20140219 |