CN104090155B - Ring network T-joint integral high-voltage electric energy intelligent metering method and apparatus - Google Patents
Ring network T-joint integral high-voltage electric energy intelligent metering method and apparatus Download PDFInfo
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- CN104090155B CN104090155B CN201410261675.1A CN201410261675A CN104090155B CN 104090155 B CN104090155 B CN 104090155B CN 201410261675 A CN201410261675 A CN 201410261675A CN 104090155 B CN104090155 B CN 104090155B
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Abstract
The invention relates a ring network T-joint integral high-voltage electric energy intelligent metering technology and apparatus, and discloses a method and apparatus which are specially used at a ring network line T joint or a T joint in a ring network cabinet to realize intelligent metering and can detect and deal with metering abnormities or calculate line loss. Sampling is carried out by use of a current-method high voltage measuring method, equal voltages at the T joint are distributed to other metering loops, and errors caused by a T joint path number are compensated. Each branch line only has currents read and is accessed to a corresponding metering unit, according to a power supply direction, mutual logic relations among paths are established, and when metering data does not accord with the logic relations or the errors of the logic relations are greater than set values, corresponding processing is carried out. Each path employs intelligent metering, each metering logic relation is intelligently processed, the metering abnormities are detected or the calculate line loss at the T joint is calculated, and functions such as open daily freezing, a maximum amount, automatic load curve reporting and the like can also be carried out. Transmission to a main station or management of a mobile phone can be realized through a communication terminal by use of various modes so that management personnel can be notified timely.
Description
Technical field
The present invention provide it is a kind of be exclusively used in loop grid or ring main unit in high pressure measurement monitoring or protection device, especially
A kind of looped network T connects place's integral high pressure electric energy intelligent metering method and device.
Background technology
Ring network power supply refers to twice of the different buses in different electric substations or same electric substation or many feedback lines, mutually
Between connect into the mode that a loop is powered.Distribution line realized after ring network power supply, substantially improves existing single supply
For electric defect, service main interconnection power supply is realized, sharpest edges are that power load is carried out into reasonable distribution, shorten radius of electricity supply,
General Promotion user side quality of voltage.And, when certain part of circuit breaks down, can the position of isolated fault in time, if
Method is switched to load normal power supply from both sides, this avoid electrical network occurrence of large-area power outage, shortens the breakdown repair time,
Reduce loss of outage.
With the continuous development of urban power distribution network, a large amount of buried cable runs and ring main unit are generalizable.Currently, state
Using energy-saving and emission-reduction as the emphasis strengthened macro-control, power grid enterprises are the substantial responsibility main bodys of energy-saving and emission-reduction for family.Therefore it is national
Grid company and Southern Power Grid Company propose the requirement of fine-grained management for the circuit management of power use work of power distribution network, to ring
The each power transmission node in netting twine road needs to carry out the clearing examination of Fen Tai areas, is dropped by management means and technological means during examination
Low matching net wire loss, improves distribution economic benefit.Platform line performance appraisal is the important channel of full mold marketing fine-grained management.City
Distribution line is employed after ring network power supply mode, and because mutual line falling road is more, carrying out platform line performance check management just must mutually fall
Point installs bidirectional measuring device additional, and for line loss calculation data foundation is provided.Therefore, electric power enterprise needs to install metering dress additional in ring main unit
Put to carry out platform line performance appraisal.
Existing looped network metering is mainly three-phase three-wire system, and using two high-tension current inductors, two high tension voltages are mutual
The electric energy meter of sensor and low-pressure section is implemented.Field conduct volume is larger, the serious cabinet space for taking ring-main unit.Its
Primary disadvantage is that：1st, measure cabinet volume big, be not suitable for the compact installation of ring main unit；2nd, dielectric level is poor；3rd, traditional transformer
It is difficult to ensure that there is the hidden danger such as ferromagnetic resonance and insulation fault in safety and accuracy；4th, operation energy consumption is higher；5th, high pressure
Transformer consumes the resources such as substantial amounts of copper and iron insulant；6th, site operation installation difficulty is big, and workload is very big；7th, can only realize
Individual node is measured and some summation total amounts are calculated, it is impossible to solve the detection early warning of power stealing electric leakage.
The content of the invention
According to above the deficiencies in the prior art, the technical problem to be solved in the present invention is：One kind is provided and is exclusively used in looped network meter
Amount and control, current signal gathered using distributed node, using same voltage signal, looped network energy data is carried out metering and
The metering method of control analysis.
Another object of the present invention is to utilize said method, unified management through quantification pattern, simple installation, perfect in shape and function
Looped network T connect place integral high pressure electric energy intelligent metering device.
The technical solution adopted for the present invention to solve the technical problems is：A kind of branch line T in ring main unit connects and divide in place
Not She Zhi distributed data acquisition unit gather the electric current that loop grid each T meets place respectively, each T for being gathered connects the electric current at place
Unequal, the unequal current signal in each T places of connecing for being gathered is transformed to micro-signal and is transferred to metering units；Sensor type high pressure
Electric power meter gathers the electric power signal of ring main unit total input-wire and total outlet, and each branch voltage is equal, high by sensor type
Pressure electric power meter gathers voltage all the way and carries out multichannel application using current method, and by the voltage signal all the way of collection with wechat
Number form is transported to metering units；Metering units utilize according to the multichannel current signal gathered using way and all the way voltage believe
Way error compensation and overall metering number are carried out, metric results are formed, then the metric results sensor type high pressure is transferred to into
The processing meanss of electric power meter carry out logical analyses, anomaly analysis and transmission.
It is exclusively used in the T places of connecing in the loop grid T places of connecing (point hand in hand) or ring main unit and realizes intelligent metering, can be multichannel at this
Quantitative relation carries out data processing, investigates and prosecutes metering exception or calculates line loss, and can be to the problem real-time processing of discovery, using sensing
Device formula high tension electricity energy gauging method principle, realizes that high pressure measurement is monitored or protected.Because loop grid T meets place's (hand in hand) or ring
The net cabinet T place's of connecing (hand in hand) interfaces need some multiple meterings to monitor or protection device, and the voltage on these roads is equal, simply electricity
Stream does not wait this feature, voltage multichannel application all the way is taken using voltage sensor (current method), according to being acquired using way, count
The error compensation of amount.Main road voltage sampling is carried out using sensor type high tension electricity energy gauging method principle, place's voltage phase is connect according to T
Deng, voltage is assigned to other measurement loops, the error that way causes is connect to corresponding T has voltage error compensator to compensate,
Standard voltage signal after compensation is accessed per road metering units, per road branched line obtaining current, accesses each road metering units, root
Be that the flow direction of electric current sets up mutual logical relation between each road according to power supply direction, when continuous data occur and logical relation be not inconsistent or
When person logical relation continuous data error occurs more than setting value, processed accordingly.
Overcome traditional transformer and be difficult to ensure that there is ferromagnetic resonance and insulation fault etc. hidden in safety and accuracy
Suffer from, and operation energy consumption is relatively low.Avoid consuming the resources such as substantial amounts of copper and iron insulant；Site operation is easy for installation, can solve
The detection early warning problem of power stealing electric leakage.
The sampling method of described voltage signal is, using sensor type high tension electricity energy gauging method principle, according to T place to be met
Voltage is equal, and voltage is assigned to metering units, and the error that respective branch line number causes is mended by voltage error compensator
Repay, the standard voltage signal after compensation is accessed per road metering units.
Described processing meanss carry out logical analyses refer to by the power consumption at each T place of connecing carry out calculate and ring main unit electricity consumption
The calculating of amount, compare, mutual logical relation between each branch line is set up according to power supply direction, anomaly analysis are referred to works as continuous data
Occur not being inconsistent or occur in logical relation continuous data error with logical relation when being more than setting value, processed, warning is carried
Wake up and surreptitiously leak electricity.
Described logical analyses are referred to using electricity computing formula QEnter=Q1+Q2+Q3……Qn+QGo out, according to the confession for detecting
Electric direction is automatically converted to forward and reverse and calculates actual power consumption, then calculates line loss.Backwards calculation is referred in loop grid
Total outlet and total input-wire be it is relative, according to power supply direction total input-wire power supply direction it is reverse after, as total outlet metering.
The looped network T of metering method described in a kind of employing above claim connects place's integral high pressure electric energy intelligent metering device,
Including total input-wire, total outlet and some branched lines is arranged in the ring main unit being arranged on loop grid, ring main unit, in ring main unit
Some branched lines on be respectively embedded into setting distributed data acquisition unit, distributed data acquisition unit at least includes electric
The high-voltage current sensor and metering units of connection, high-voltage current sensor is separately positioned on branched line, and high-tension electricity spreads
The outfan connection metering units of sensor；Ring main unit total input-wire and total outlet be respectively provided with sensor type high tension electricity energy metering
Device, the high tension voltage sampling apparatuses of sensor type high tension electricity energy metering device connect the metering list of distributed data acquisition unit
Unit；The metering units of distributed data acquisition unit, mutual electricity between sensor type high tension electricity energy metering device and communication terminal
Gas connects；The metering units of distributed data acquisition unit and sensor type high tension electricity energy metering device connection power supply；Sensor
Formula high-voltage electric-energy meter arranges processing meanss, and processing meanss include logic analysis module, anomaly analysis module and output dress
Put, the communication terminal connection communication terminal of processing meanss, output device arranges abnormal alarm prompting.
The high-voltage current sensor setting quantity of described distributed data acquisition unit is equal with the quantity of branched line,
The outfan of all high-voltage current sensors connects the input of metering units.
Described high-voltage current sensor is penetration type induction coil, and penetration type induction coil carries out insulation processing, is adopted
12/65/110KV grades.
Described metering units arrange voltage error compensator.The mistake that voltage error compensator causes to respective branch line number
Difference is compensated.
Described metering units are arranged on the PT rooms of ring main unit.
Between described metering units and sensor type high tension electricity energy metering device by RS485 order wires, it is wireless,
One of GPRS, MANET or public network connect.
Respectively by the embedded setting distributed data acquisition list of test plug on some branched lines of described ring main unit
Unit, test plug includes body through the tested gateway of connection, measurement voltage patchhole and current signal output end, body
Inspection flow chamber is set, the high-voltage current sensor that distributed data acquisition unit is set in flow chamber is examined.Tested setup of entrances and exits bus,
High-voltage current sensor is set in inspection flow chamber, and connects metering units from current signal output end.High-voltage current sensor is
Magneto-resistive current sensor.
The total input-wire of described ring main unit and total outlet arrange sensor type high tension electricity energy metering by voltage detecting plug
The current detection section of device.
Described electrical connection selects 485 lines, wireless, GPRS, MANET or public network according to operating mode.Communication terminal passes through nothing
Line communicates connection management mobile phone, in order in time result, exception, warning etc. be notified into management personnel.
The high-voltage current sensor setting quantity of described distributed data acquisition unit is equal with the quantity of branched line,
The outfan of all high-voltage current sensors connects the input of metering units.
In addition to test plug, high-voltage current sensor can also be adopted：1st, through type, it is adaptable to which newly-built looped network is matched somebody with somebody
The ring main unit of electric wire, installation is settled at one go, improves efficiency, is easy to safeguard；2nd, snap-type, it is adaptable to which newly-built ring main unit is powered
Operating mode is installed, it is not necessary to have a power failure and install, improves installation effectiveness and benefit；3rd, it is pincerlike to be applied to powered installation and situ metrology, peace
Shelve and set conveniently, it is not necessary to have a power failure, it is not necessary to turn the ring main unit, it is efficient and convenient.
Integral high pressure electric energy intelligent metering device in the looped network T places of connecing of the present invention is had an advantageous effect in that：It is exclusively used in looped network
The T places of connecing realize intelligent metering in the circuit T places of connecing or ring main unit, and multiple metering relation at this can be entered according to line powering direction
Row data logical process, is capable of achieving to investigate and prosecute that metering is abnormal or calculate line loss, and can to the method for problem real-time processing that finds and
Device.
By being respectively provided with distributed data acquisition unit in some T places of connecing of looped network distribution wire, precise acquisition is realized
The electricity consumption current data of each node, calculates power consumption together with voltage parameter, and can be counted with distribution wire, especially
Have：1st, accuracy of detection is high；2nd, arrange simple easy, be easy to the transformation of existing looped network；3rd, due to being gathered using penetration type coil
Data, itself energy consumption is low；4th, dielectric level is high, runs safety and stability.
Integral high pressure electric energy intelligent metering method in the looped network T places of connecing of the present invention is had an advantageous effect in that：1st, can be at this
Multiple metering relation carries out data processing, calculates accurate；2nd, can be wirelessly transferred, it is also possible to wired transmission, it is possible to use public network
Or MANET；3rd, each bar distribution wire energy data of looped network can be monitored, trouble point and abnormity point is discharged.4th, metering is investigated and prosecuted different
Normal or calculating line loss, and the method and apparatus of problem real-time processing that can be to finding.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the test plug of the present invention；
Wherein：1st, measure voltage patchhole 2, current signal output end 3,5, tested gateway 4, inspection flow chamber.
Specific embodiment
Embodiments of the invention are described further below in conjunction with the accompanying drawings：
Embodiment 1：
As shown in figure 1, a kind of looped network T connects place's integral high pressure electric energy intelligent metering method, in the branch line T of ring main unit place is met
On be respectively provided with distributed data acquisition unit and gather the electric current that loop grid each T meets place respectively, current signal is transformed to
Micro-signal is transferred to metering units；Sensor type high tension electricity energy metering device gathers the electric energy letter of ring main unit total input-wire and total outlet
Number, and sensor type high tension electricity energy metering device is transported to using the voltage signal that current method is collected in micro-signal form
Metering units；Metering units carry out way error compensation and overall metering using multichannel current signal and all the way voltage signal, so
Afterwards by the processing meanss that the metric results are transferred to sensor type high tension electricity energy metering device carry out logical analyses, anomaly analysis and
Transmission.
It is exclusively used in the T places of connecing in the loop grid T places of connecing (point hand in hand) or ring main unit and realizes intelligent metering, can be multichannel at this
Quantitative relation carries out data processing, investigates and prosecutes metering exception or calculates line loss, and can be to the problem real-time processing of discovery, using sensing
Device formula high tension electricity energy gauging method principle, realizes high pressure measurement monitoring or protection device.Because loop grid T meets place or ring main unit
The T places of connecing interface needs some multiple meterings to monitor or protection device, and the voltage of these branch roads is equal, and simply electric current does not wait this
Feature, takes voltage multichannel application all the way, according to the error for being acquired using way, measuring using voltage sensor (current method)
Compensation.Overcome traditional transformer and be difficult to ensure that there is the hidden danger such as ferromagnetic resonance and insulation fault in safety and accuracy,
And operation energy consumption is relatively low.Avoid consuming the resources such as substantial amounts of copper and iron insulant；Site operation installs difficult convenient, can solve to steal
The detection early warning problem of leakance electricity.
The sampling method of voltage signal is, using sensor type high tension electricity energy gauging method principle, according to T place's voltage phase to be connect
Deng, voltage is assigned to metering units, the error that respective branch line number causes is compensated by voltage error compensator, compensate
Standard voltage signal afterwards is accessed per road metering units.
Processing meanss carry out logical analyses and refer to the meter that the power consumption at each T place of connecing is carried out calculating and ring main unit power consumption
Calculate, compare, mutual logical relation between each branch line is set up according to power supply direction, anomaly analysis refer to when continuous data occurs and
When logical relation is not inconsistent or occurs in logical relation continuous data error and is more than setting value, processed, warning reminding is surreptitiously leaked
Electricity.
Logical analyses are referred to using electricity computing formula QEnter=Q1+Q2+Q3……Qn+QGo out, according to the power supply direction for detecting
It is automatically converted to forward and reverse and calculates actual power consumption, then calculates line loss.Backwards calculation refers to always going out in loop grid
Line and total input-wire are relative, according to power supply direction total input-wire after power supply direction is reverse, as total outlet metering.
Embodiment 2：
A kind of looped network T for realizing above-mentioned technology connects place's integral high pressure electric energy intelligent metering device, including being arranged on looped network line
Total input-wire, total outlet and some branched lines are set in the ring main unit on road, ring main unit, on some branched lines of ring main unit
Distributed data acquisition unit is respectively provided with, distributed data acquisition unit at least includes the high-voltage current sensor of electrical connection
And metering units, high-voltage current sensor arranges and is separately positioned on branched line, the connection of the outfan of high-voltage current sensor
Metering units；Ring main unit total input-wire and total outlet be respectively provided with sensor type high tension electricity energy metering device, sensor type is high
The high tension voltage sampling apparatuses of pressure electric power meter connect the metering units of distributed data acquisition unit；Distributed data is adopted
The metering units of collection unit, it is electrically connected to each other between sensor type high tension electricity energy metering device and communication terminal.
The high-voltage current sensor setting quantity of distributed data acquisition unit is equal with the quantity of branched line, Suo Yougao
The outfan of piezoelectricity flow sensor connects the input of metering units.Sensor type high tension electricity energy metering device is arranged and processes dress
Put, processing meanss include logic analysis module, anomaly analysis module and output device, the communication terminal connection communication end of processing meanss
End, output device arranges abnormal alarm prompting.
Electrical connection selects 485 lines, wireless, GPRS, MANET or public network according to operating mode.Communication terminal passes through wireless telecommunications
Connection management mobile phone, in order in time result, exception, warning etc. be notified into management personnel.Communication terminal also by wireless or
Wired mode connects main website, carries out Centralized Monitoring.
High-voltage current sensor can be through ring main unit of the type suitable for newly-built looped network distribution wire, and installation is settled at one go,
Efficiency is improved, is easy to safeguard；Can be snap-type, it is adaptable to newly-built ring main unit or powered installation operating mode, it is not necessary to which have a power failure peace
Dress, improves installation effectiveness and benefit；Pincer is applied to powered installation and situ metrology, installs and sets up convenient, it is not necessary to has a power failure, no
This is needed to turn ring main unit, it is efficient and convenient.
High-voltage current sensor is penetration type induction coil, and penetration type induction coil carries out insulation processing.
The characteristics of considering circuit is reinforced interior insulation level design, using 12/65/110KV grades.
As shown in Fig. 2 for simple and practical and setting, designing a test plug.On some branched lines of ring main unit
Respectively distributed data acquisition unit is set by the way that test plug is embedded, test plug includes tested discrepancy of the body through connection
Mouth 3,5, measurement voltage patchhole 1 and current signal output end 2, body arranges inspection flow chamber 4, and inspection flow chamber 4 is interior to arrange distributed
The high-voltage current sensor of data acquisition unit.Tested setup of entrances and exits bus, arranges high-voltage current sensor in inspection flow chamber, and
And connect metering units from current signal output end.High-voltage current sensor is magneto-resistive current sensor.
The total input-wire of described ring main unit and total outlet arrange sensor type high tension electricity energy metering by voltage detecting plug
The current detection section of device.
Claims (10)
1. a kind of looped network T connects place's integral high pressure electric energy intelligent metering method, it is characterised in that：Place is met in the branch line T of ring main unit
On be respectively provided with distributed data acquisition unit and gather the electric current that loop grid each T meets place respectively, each T for being gathered meets place
Electric current is unequal, the unequal current signal in each T places of connecing for being gathered is transformed to into micro-signal and is transferred to metering units；
Sensor type high tension electricity energy metering device gathers the electric power signal of ring main unit total input-wire and total outlet, each branch voltage phase
Deng, gathering voltage all the way using current method by sensor type high tension electricity energy metering device carries out multichannel application, and by collection
All the way voltage signal is transported to metering units in micro-signal form；
Metering units are utilized and carry out way error benefit according to the multichannel current signal gathered using way and all the way voltage signal
Repay and overall metering, form metric results, then the metric results are transferred to the place of sensor type high tension electricity energy metering device
Reason device carries out logical analyses, anomaly analysis and transmission.
2. looped network T according to claim 1 connects place's integral high pressure electric energy intelligent metering method, it is characterised in that：Described
The sampling method of voltage signal is using sensor type high tension electricity energy gauging method principle, place's voltage to be connect according to T equal, voltage
Metering units are assigned to, the error that respective branch line number causes is compensated by voltage error compensator, the standard after compensation
Voltage signal is accessed per road metering units.
3. looped network T according to claim 1 connects place's integral high pressure electric energy intelligent metering method, it is characterised in that：Described
Processing meanss carry out logical analyses refer to by the power consumption at each T place of connecing carry out calculate and ring main unit power consumption calculating, compare,
Mutual logical relation between each branch line is set up according to power supply direction, anomaly analysis are referred to when continuous data occurs and logical relation
When not being inconsistent or occur in logical relation continuous data error and being more than setting value, processed, warning reminding is surreptitiously leaked electricity.
4. the looped network T according to claim 1 or 3 connects place's integral high pressure electric energy intelligent metering method, it is characterised in that：It is described
Logical analyses refer to using electricity computing formula QEnter=Q1+Q2+Q3……Qn+QGo out, turned automatically according to the power supply direction for detecting
It is changed to forward and reverse and calculates actual power consumption, then calculates line loss.
5. the looped network T of metering method any one of a kind of employing claim 1-4 connects place's integral high pressure electric energy intelligent metering
Device, including setting total input-wire, total outlet and some branched lines in the ring main unit being arranged on loop grid, ring main unit, its
It is characterised by：
Setting distributed data acquisition unit, distributed data acquisition unit are respectively embedded on some branched lines of ring main unit
At least include the high-voltage current sensor and metering units of electrical connection, high-voltage current sensor is separately positioned on branched line
On, the outfan connection metering units of high-voltage current sensor；
Ring main unit total input-wire and total outlet be respectively provided with sensor type high tension electricity energy metering device, sensor type high tension electricity energy
The high tension voltage sampling apparatuses of metering device connect the metering units of distributed data acquisition unit；
The metering units of distributed data acquisition unit, mutual electricity between sensor type high tension electricity energy metering device and communication terminal
Gas connects；The metering units of distributed data acquisition unit and sensor type high tension electricity energy metering device connection power supply；
Sensor type high tension electricity energy metering device arranges processing meanss, and processing meanss include logic analysis module, anomaly analysis mould
Block and output device, the communication terminal connection communication terminal of processing meanss, output device arranges abnormal alarm prompting.
6. looped network T according to claim 5 connects place's integral high pressure electric energy intelligent metering device, it is characterised in that：Described
The high-voltage current sensor setting quantity of distributed data acquisition unit is equal with the quantity of branched line, and all high-tension electricities spread
The outfan of sensor connects the input of metering units.
7. looped network T according to claim 5 connects place's integral high pressure electric energy intelligent metering device, it is characterised in that：Described
High-voltage current sensor is penetration type induction coil, and penetration type induction coil carries out insulation processing, using 12/65/110KV etc.
Level.
8. looped network T according to claim 5 connects place's integral high pressure electric energy intelligent metering device, it is characterised in that：Described
Metering units arrange voltage error compensator.
9. looped network T according to claim 5 connects place's integral high pressure electric energy intelligent metering device, it is characterised in that：Described
By RS485 order wires, wireless, GPRS, MANET or public network between metering units and sensor type high tension electricity energy metering device
One of connection.
10. looped network T according to claim 5 connects place's integral high pressure electric energy intelligent metering device, it is characterised in that：Described
Respectively by the embedded setting distributed data acquisition unit of test plug on some branched lines of ring main unit, test plug includes
Through the tested gateway of connection, measurement voltage patchhole and current signal output end, body arranges inspection flow chamber, inspection stream to body
The high-voltage current sensor of indoor setting distributed data acquisition unit；High-voltage current sensor is magneto-resistive current sensor.
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Citations (1)
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| CN101271129A (en) * | 2007-03-22 | 2008-09-24 | 淄博计保互感器研究所 | Sensor type high tension electricity energy gauging method |
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| CN1004835B (en) * | 1986-05-23 | 1989-07-19 | 北京电力科学研究所 | Compensator for total errors of electric energy countings |
| CN201247276Y (en) * | 2008-06-16 | 2009-05-27 | 王立军 | Intelligent power utilization metering monitoring instrument |
| CN201229376Y (en) * | 2008-06-27 | 2009-04-29 | 武汉国测科技股份有限公司 | Cable plug-in voltage sensor |
| CN203054082U (en) * | 2013-01-16 | 2013-07-10 | 厦门大洋通信有限公司 | Multipath electric energy metering equipment |
| CN203479896U (en) * | 2013-09-25 | 2014-03-12 | 国家电网公司 | Directly access type high voltage electric energy metering system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101271129A (en) * | 2007-03-22 | 2008-09-24 | 淄博计保互感器研究所 | Sensor type high tension electricity energy gauging method |
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Denomination of invention: Intelligent metering method and device for overall high-voltage electric energy at T-junction of ring network Effective date of registration: 20221024 Granted publication date: 20170517 Pledgee: Industrial Commercial Bank of China Ltd. Zibo Zhangdian branch Pledgor: Shandong Jibao Electric Co.,Ltd. Registration number: Y2022980019143 |
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