CN203133182U - Ground capacitance detection circuit for DC power system - Google Patents

Ground capacitance detection circuit for DC power system Download PDF

Info

Publication number
CN203133182U
CN203133182U CN2013200122457U CN201320012245U CN203133182U CN 203133182 U CN203133182 U CN 203133182U CN 2013200122457 U CN2013200122457 U CN 2013200122457U CN 201320012245 U CN201320012245 U CN 201320012245U CN 203133182 U CN203133182 U CN 203133182U
Authority
CN
China
Prior art keywords
power
links
resistance
ground capacitance
circuit
Prior art date
Application number
CN2013200122457U
Other languages
Chinese (zh)
Inventor
刘树林
翦志强
武虎雄
Original Assignee
深圳市金宏威技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市金宏威技术股份有限公司 filed Critical 深圳市金宏威技术股份有限公司
Priority to CN2013200122457U priority Critical patent/CN203133182U/en
Priority to CN201310008876.6A priority patent/CN103926468B/en
Application granted granted Critical
Publication of CN203133182U publication Critical patent/CN203133182U/en

Links

Abstract

The utility model discloses a ground capacitance detection circuit for DC power system; the ground capacitance detection circuit comprises the following structures: a voltage detection circuit connected with the DC power system and used for detecting DC power system ground capacitance discharge voltage; a constant current discharge circuit connected with the DC power system and used for enabling the DC power system ground capacitance to discharge; and a MCU controller connected with the constant current discharge circuit and the voltage detection circuit and used for timing and for controlling the constant current discharge circuit for enabling the DC power system ground capacitance to discharge. The ground capacitance detection circuit for the DC power system is simple in circuit structure, novel and reasonable in design, and high in detection precision, and can on-line detect the ground capacitance of the DC power system in real-time under a condition that normal operation of the DC power system is not affected.

Description

A kind of DC power system ground capacitance testing circuit
Technical field
The utility model relates to the circuit engineering field, is specifically related to a kind of DC power system ground capacitance testing circuit.
Background technology
Insulation monitoring and warning device is the device that a kind of state of insulation that is primarily aimed at DC power system bus and branch road carries out online real-time detection and management, has been widely used at present in the detection and management of all size electric power operation power-supply system, solar photovoltaic grid-connection system, direct current Remote Power Supply system, HVDC high-voltage direct current (DC) power system state of insulation.
The generation of DC power system ground capacitance is that DC power system institute is peculiar, and can't avoid, the generation of its ground capacitance is mainly from following three aspects: the one, and cable distributed capacitance over the ground, but distributed capacitance numerical value is less relatively over the ground for general cable, is not the main cause that constitutes the DC power system ground capacitance; The 2nd, from the ground capacitance in numerous equipment loop, be the main cause that constitutes the DC power system ground capacitance; The 3rd, the anti-interference capacitor of system, Switching Power Supply be filter capacitor etc. over the ground, and the DC power system scale is more big, the more big then system in zone ground capacitance is also more big.
The existence of DC power system bus ground capacitance is that the DC power system one point earth causes one of key factor of protective relaying maloperation; therefore the DC power system ground capacitance to existing operation carries out comprehensive and systematic detection; can accurately analyze straight-flow system bus ground capacitance causes one point earth to cause the process of protection malfunction; the safeguard procedures that DC power system earth fault causes the protection malfunction are proposed accordingly; to reduce even to stop the loss of power accident that earth fault causes that the protection malfunction causes as far as possible, improve security and the power supply reliability of system.Therefore it is significant to design a kind of insulation testing circuit detection DC power system ground capacitance.
The method of measuring the DC power system ground capacitance at present has simple bridge method, simple capacity discharge method and injects the AC signal method.
Though simple bridge method can directly be measured DC power system positive and negative busbar ground capacitance, this method can only be measured under the condition of system cut-off and can't make troubles to practical application for the measurement of DC power system ground capacitance in service.
Simple capacity discharge method need be between DC power system bus and ground outer meeting resistance R, may make DC power system produce artificial ground connection hidden danger, thereby bring potential safety hazard to total system, and result of calculation is relevant with outer meeting resistance R, be subjected to the influence of artificial reading error easily, make measurement result inaccurate.
Injecting the AC signal method is that AC signal is injected between straight-flow system positive and negative busbar and the ground by capacity coupled mode, and voltage magnitude, current amplitude and electric current and voltage phase differential by Measuring Alternating Current Signal calculate the straight-flow system ground capacitance.This method need be injected and add AC signal, use for actual DC power system and bring various other influences, and the ac small signal that injects is subject to the influence of DC power system distributed capacitance, thereby influence its measurement result.
The utility model content
In view of this, the utility model embodiment provides a kind of DC power system ground capacitance testing circuit, has a potential safety hazard with what the testing circuit that solves prior art existed, and measurement result is inaccurate, can influence the technical matters of the normal operation of DC power system.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
A kind of DC power system ground capacitance testing circuit comprises: be connected with DC power system, for detection of the voltage detecting circuit of DC power system ground capacitance sparking voltage; Be connected with DC power system, be used for the constant-current discharge circuit that the DC power system ground capacitance is discharged; Be connected with voltage detecting circuit with the constant-current discharge circuit, be used for control constant-current discharge circuit and the DC power system ground capacitance discharged and the MCU controller of timing.
To sum up, the utility model embodiment provides a kind of DC power system ground capacitance testing circuit, various measuring methods compared to existing technology, circuit structure of the present utility model is simple, rationally novel in design, can be under the situation that does not influence the normal operation of DC power system, the ground capacitance of accurate real-time online measuring DC power system, and accuracy of detection height, the straight-flow system ground capacitance that moves for real-time online measuring provides effective means and method, satisfy the requirement that the actual DC power-supply system is used, applied range, application value height.
Description of drawings
The schematic block circuit diagram of the DC power system ground capacitance testing circuit that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the circuit theory diagrams of the utility model embodiment one;
Fig. 3 is the circuit theory diagrams of the utility model embodiment two;
Fig. 4 is the circuit theory diagrams of the utility model embodiment three.
Embodiment
Embodiment one
As shown in Figure 1, the utility model provides a kind of DC power system ground capacitance testing circuit, and this circuit comprises: be connected with DC power system (1), for detection of the voltage detecting circuit (2) of DC power system ground capacitance sparking voltage; Be connected with DC power system (1), be used for the constant-current discharge circuit (3) that DC power system (1) ground capacitance is discharged; Be connected with voltage detecting circuit (2) with constant-current discharge circuit (3), be used for control constant-current discharge circuit (3) and DC power system (1) ground capacitance discharged and the MCU controller (4) of timing.
Fig. 2 is the circuit theory diagrams of present embodiment, and among the figure, the dotted line left side is the structural drawing of DC power system (1), and the dotted line right side is the structural drawing of the DC power system ground capacitance testing circuit of the utility model embodiment.
In conjunction with Fig. 2, in the present embodiment, described voltage detecting circuit (2) comprises operational amplifier U1, resistance R 3, R4.One end of described resistance R 3 and direct supply bus KM+ join, and the in-phase input end of the other end of resistance R 3 and described operational amplifier U1 joins; The in-phase input end of described resistance R 4 one ends and described operational amplifier U1 joins, the other end ground connection of resistance R 4; The inverting input of described operational amplifier U1 directly links to each other with output terminal, and the output terminal of operational amplifier U1 links to each other with the MCU controller.
In conjunction with Fig. 2, in the present embodiment, described constant-current discharge circuit (3) comprises K switch, NPN type triode VT1, operational amplifier U2, capacitor C 1 and resistance R 5, R6, R7.The collector of described NPN type triode VT1 links to each other with DC power system bus KM+, the emitter of NPN type triode VT1 links to each other with first end " 1 " of described K switch, the base stage of NPN type triode VT1 links to each other with an end of described resistance R 5, and the other end of resistance R 5 links to each other with the output terminal of described operational amplifier U2; The in-phase input end of described operational amplifier U2 meets reference voltage V REF; One end of described capacitor C 1 links to each other with the inverting input of operational amplifier U2, and the other end of capacitor C 1 links to each other with the output terminal of operational amplifier U2; One end of described resistance R 6 links to each other with the inverting input of operational amplifier U2, and the other end of resistance R 6 links to each other with the emitter of described NPN type triode VT1; One end of described resistance R 7 links to each other the other end ground connection of resistance R 7 with second end " 2 " of K switch; The 3rd end " 3 " of described K switch connects the MCU controller.
In the present embodiment, described MCU controller (4) is mainly used in the turn-on and turn-off of gauge tap K, namely by the described constant-current discharge circuit of control, and the discharge of the anodal ground capacitance of control DC power system bus, and calculate the used time of setting voltage that is discharged to.
Embodiment two
Fig. 3 is the circuit theory diagrams of present embodiment, and among the figure, the dotted line left side is the structural drawing of DC power system (1), and the dotted line right side is the structural drawing of the DC power system ground capacitance testing circuit of the utility model embodiment.
In conjunction with Fig. 3, present embodiment as different from Example 1: the structure difference of described constant-current discharge circuit (3).In the present embodiment, described constant-current discharge circuit (3) comprising: K switch, NPN type triode VT2, stabilivolt ZD1, resistance R 8, R9.One end of described resistance R 8 links to each other with DC power system bus KM+, and the other end of resistance R 8 links to each other with the negative electrode of described stabilivolt ZD1, the plus earth of stabilivolt ZD1; First end " 1 " of described K switch links to each other with DC power system bus KM+, and second end " 2 " of K switch links to each other with the collector of described NPN type triode VT2, and the 3rd end " 3 " of K switch connects the MCU controller; The base stage of described NPN type triode VT2 links to each other with the negative electrode of described stabilivolt ZD1, and the emitter of NPN type triode VT2 links to each other with an end of described resistance R 9, the other end ground connection of resistance R 9.The remaining circuit structure is all identical with embodiment one.
Embodiment three
Fig. 4 is the circuit theory diagrams of present embodiment, and among the figure, the dotted line left side is the structural drawing of DC power system (1), and the dotted line right side is the structural drawing of the DC power system ground capacitance testing circuit of the utility model embodiment.
In conjunction with Fig. 4, what present embodiment and embodiment one were different is: the structure difference of described constant-current discharge circuit (3).In the present embodiment, described constant-current discharge circuit (3) comprising: K switch, NPN type triode VT3, TL431, resistance R 10, R11.One end of described resistance R 10 links to each other with DC power system bus KM+, and the other end of resistance R 10 extremely links to each other with the C of described TL431; First end " 1 " of described K switch links to each other with DC power system bus KM+, and second end " 2 " of K switch links to each other with the collector of described NPN type triode VT3, and the 3rd end " 3 " of K switch connects the MCU controller; The base stage of described NPN type triode VT3 extremely links to each other with the C of described TL431, and the emitter of NPN type triode VT3 extremely links to each other with the R of TL431, the A utmost point ground connection of TL431; One end of described resistance R 11 extremely links to each other with the R of TL431, the other end ground connection of resistance R 11.The remaining circuit structure is all identical with embodiment 1.
In conjunction with Fig. 1, principle of work of the present utility model is: send the discharge commencing signal by the MCU controller during measurement, and the K switch conducting, the DC power system ground capacitance begins discharge by the constant-current discharge circuit, and the MCU controller picks up counting simultaneously; By voltage detecting circuit the anodal voltage-to-ground of detected DC power system bus is transferred to the MCU controller during discharge; When voltage dropped to the magnitude of voltage of MCU controller setting, the MCU controller sent the discharge off signal, and K switch is turn-offed, and the DC power system ground capacitance finishes discharge, calculates discharge time by the MCU controller.Then according to the constant-current discharge electric current of setting and sparking voltage and discharge time of calculating, can calculate the ground capacitance of DC power system.
In conjunction with Fig. 2, concrete principle of work of the present utility model is: send the discharge commencing signal by the MCU controller, the K switch conducting, the DC power system ground capacitance passes through by NPN type triode VT1, operational amplifier U2, capacitor C 1, the constant-current discharge circuit that resistance R 5, R6, R7 constitute begins discharge, and MCU picks up counting simultaneously; Pass through by operational amplifier U1 during discharge, the voltage detecting circuit that resistance R 3, R4 constitute is transferred to the MCU controller with the anodal voltage-to-ground of detected DC power system bus; When voltage dropped to the magnitude of voltage of MCU controller setting, the MCU controller sent the discharge off signal, and K switch is turn-offed, and the DC power system ground capacitance finishes discharge.Then according to the constant-current discharge electric current of setting and sparking voltage and discharge time of calculating, can calculate the ground capacitance of DC power system.
In sum, the utility model embodiment provides a kind of DC power system ground capacitance testing circuit, when measuring, pass through the turn-on and turn-off of MCU controller gauge tap K, namely control described constant-current discharge circuit, and then the discharge of the anodal ground capacitance of control DC power system bus, and calculate the discharge used time of setting voltage.According to the constant-current discharge electric current of setting and sparking voltage and discharge time of calculating, directly calculate the DC power system ground capacitance.The design is new reasonable, can be at the ground capacitance that does not influence accurate real-time online measuring DC power system under the normal situation about moving of DC power system, the straight-flow system ground capacitance that moves for real-time online measuring provides effective means and method, and accuracy of detection height, the straight-flow system ground capacitance that moves for real-time online measuring provides effective means and method, satisfy the requirement that the actual DC power-supply system is used, applied range, application value height.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.

Claims (6)

1. a DC power system ground capacitance testing circuit is characterized in that, comprising:
Be connected with DC power system, for detection of the voltage detecting circuit of DC power system ground capacitance sparking voltage; Be connected with DC power system, be used for making the constant-current discharge circuit of DC power system ground capacitance discharge; Be connected with voltage detecting circuit with the constant-current discharge circuit, be used for the MCU controller that control constant-current discharge circuit makes the discharge of DC power system ground capacitance and timing.
2. according to the described DC power system ground capacitance of claim 1 testing circuit, it is characterized in that: described voltage detecting circuit comprises operational amplifier U1, resistance R 3, R4; One end of described resistance R 3 and the bus KM+ of DC power system join, and the in-phase input end of the other end of resistance R 3 and described operational amplifier U1 joins; The in-phase input end of described resistance R 4 one ends and described operational amplifier U1 joins, the other end ground connection of resistance R 4; The inverting input of described operational amplifier U1 directly links to each other with output terminal, and the output terminal of operational amplifier U1 links to each other with the MCU controller.
3. according to the described DC power system ground capacitance of claim 1 testing circuit, it is characterized in that: described constant-current discharge circuit comprises K switch, NPN type triode VT1, operational amplifier U2, capacitor C 1, resistance R 5, R6, R7; The collector of described VT1 links to each other with the bus KM+ of DC power system, the emitter of NPN type triode VT1 links to each other with first end of described K switch, the base stage of NPN type triode VT1 links to each other with an end of described resistance R 5, and the other end of resistance R 5 links to each other with the output terminal of described operational amplifier U2; The in-phase input end of described operational amplifier U2 meets reference voltage V REF; One end of described capacitor C 1 links to each other with the inverting input of operational amplifier U2, and the other end of capacitor C 1 links to each other with the output terminal of operational amplifier U2; One end of described resistance R 6 links to each other with the inverting input of operational amplifier U2, and the other end of resistance R 6 links to each other with the emitter of described NPN type triode VT1; One end of described resistance R 7 links to each other with second end of K switch, the other end ground connection of resistance R 7; The 3rd end of described K switch links to each other with the MCU controller.
4. according to the described DC power system ground capacitance of claim 1 testing circuit, it is characterized in that: described constant-current discharge circuit comprises K switch, NPN type triode VT2, stabilivolt ZD1, resistance R 8, R9; One end of described resistance R 8 links to each other with the bus of DC power system, and the other end of resistance R 8 links to each other with the negative electrode of described stabilivolt ZD1, the plus earth of stabilivolt ZD1; First end of described K switch links to each other with the bus KM+ of DC power system, and second end of K switch links to each other with the collector of described NPN type triode VT2, and the 3rd end of K switch links to each other with the MCU controller; The base stage of described NPN type triode VT2 links to each other with the negative electrode of described stabilivolt ZD1, and the emitter of NPN type triode VT2 links to each other with an end of described resistance R 9, the other end ground connection of resistance R 9.
5. according to the described DC power system ground capacitance of claim 1 testing circuit, it is characterized in that: described constant-current discharge circuit comprises K switch, NPN type triode VT3, reference voltage source TL431, resistance R 10, R11; One end of described resistance R 10 links to each other with the bus KM+ of DC power system, and the other end of resistance R 10 extremely links to each other with the C of described TL431; First end of described K switch links to each other with the bus KM+ of DC power system, and second end of K switch links to each other with the collector of described NPN type triode VT3, and the 3rd end of K switch links to each other with the MCU controller; The base stage of described NPN type triode VT3 extremely links to each other with the C of described TL431, and the emitter of NPN type triode VT3 extremely links to each other with the R of TL431, the A utmost point ground connection of TL431; One end of described resistance R 11 extremely links to each other with the R of TL431, the other end ground connection of resistance R 11.
6. according to claim 3,4 or 5 described DC power system ground capacitance testing circuits, it is characterized in that: described MCU controling appliance body is used for controlling described constant-current discharge circuit by the turn-on and turn-off of gauge tap K, and then the discharge of the anodal ground capacitance of bus of control DC power system, and calculate the used time of discharge.
CN2013200122457U 2013-01-10 2013-01-10 Ground capacitance detection circuit for DC power system CN203133182U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2013200122457U CN203133182U (en) 2013-01-10 2013-01-10 Ground capacitance detection circuit for DC power system
CN201310008876.6A CN103926468B (en) 2013-01-10 2013-01-10 A kind of DC power system Capacitive current measuring circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013200122457U CN203133182U (en) 2013-01-10 2013-01-10 Ground capacitance detection circuit for DC power system
CN201310008876.6A CN103926468B (en) 2013-01-10 2013-01-10 A kind of DC power system Capacitive current measuring circuit

Publications (1)

Publication Number Publication Date
CN203133182U true CN203133182U (en) 2013-08-14

Family

ID=69375183

Family Applications (2)

Application Number Title Priority Date Filing Date
CN2013200122457U CN203133182U (en) 2013-01-10 2013-01-10 Ground capacitance detection circuit for DC power system
CN201310008876.6A Active CN103926468B (en) 2013-01-10 2013-01-10 A kind of DC power system Capacitive current measuring circuit

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN201310008876.6A Active CN103926468B (en) 2013-01-10 2013-01-10 A kind of DC power system Capacitive current measuring circuit

Country Status (1)

Country Link
CN (2) CN203133182U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103926468A (en) * 2013-01-10 2014-07-16 深圳市金宏威技术股份有限公司 Ground capacitance detection circuit for DC power system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106093591B (en) * 2016-06-27 2019-09-06 国网河南省电力公司新乡供电公司 A kind of isolated neutral capacitance current of distribution network measuring system and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003035732A (en) * 2001-07-19 2003-02-07 Shibasoku:Kk Method for measuring infinitesimal capacitance and infinitesimal capacity measuring circuit
CN101769966B (en) * 2010-01-27 2012-07-04 广东电网公司电力科学研究院 Method and device for measuring ground capacitance of DC system
CN102072989B (en) * 2010-11-03 2014-04-09 北京普源精电科技有限公司 Measurement device with function of measuring capacitance
CN102749591A (en) * 2011-04-22 2012-10-24 昆山金鑫新能源科技有限公司 Passive LCD (liquid crystal display) display type constant-current electronic load
CN202433445U (en) * 2012-01-18 2012-09-12 甘肃省电力公司金昌供电公司 Online measuring instrument for ground capacitance of low voltage direct current power supply of grid system
CN203133182U (en) * 2013-01-10 2013-08-14 深圳市金宏威技术股份有限公司 Ground capacitance detection circuit for DC power system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103926468A (en) * 2013-01-10 2014-07-16 深圳市金宏威技术股份有限公司 Ground capacitance detection circuit for DC power system
CN103926468B (en) * 2013-01-10 2017-07-28 深圳市金宏威技术有限责任公司 A kind of DC power system Capacitive current measuring circuit

Also Published As

Publication number Publication date
CN103926468A (en) 2014-07-16
CN103926468B (en) 2017-07-28

Similar Documents

Publication Publication Date Title
CN103389441B (en) The Fault Detection And Location System of power circuit
CN102749562B (en) Insulation monitoring device and monitoring method of power cell of electric vehicle
CN103116107B (en) A kind of high-voltage DC power supply insulating monitor
CN104378068B (en) A kind of photovoltaic module array ground insulation impedance detection and circuit
CN103293443B (en) A kind of distribution network overhead line Earth design method
CN103245879B (en) Based on the low current grounding localization method in transient reactive power direction
CN204731317U (en) A kind of intelligentized earth resistance tester
CN203673023U (en) Terminal apparatus for detecting insulation condition of direct current system
CN103529344B (en) Method for detecting intermittent high-resistance grounding fault through intermittent detection
CN202710690U (en) Lightning arrester leakage current online monitoring system based on wireless sensor network
CN102590700B (en) Based on pole line fast fault locating method and the device of time synchronized
CN102565626A (en) On-line positioning method and system of section with low-current ground faults
CN103529358B (en) Method with current information detection intermediate distribution system persistence high resistance earthing fault
CN102928704B (en) Intelligent diagnosis method for corrosion failure point of transformer substation grounding grid
TWI539169B (en) High Sensitivity Non - grounded DC Power Supply Insulation Resistance Detection Method and Its Circuit
CN104677417B (en) A kind of fault detection system and its detection method for transmission line of electricity
CN103576052B (en) Determine that alternating current seals in the system and method for DC system fault branch road
CN202939223U (en) Storage battery on-line internal resistance testing device
CN102064537B (en) Method for judging and processing single-phase earth faults by using electronic mutual inductor
CN201796108U (en) Single-phase grounding fault positioning system for distribution network of electric power system
CN103558507A (en) Sensor for direct current fault line selection and alternating current interlarding line selection
CN202758062U (en) Overall metering error detection system of digital transformer station electric energy metering device
CN104793106B (en) Distribution line fault section location method based on current break rate
CN103454580B (en) A kind of circuit-breaker switching on-off coil characteristics proving installation
CN102788645B (en) Infrared monitoring system for temperature rise of electric connecting point of electrical equipment and monitoring method

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 9 nine Wei new software park building 8 floor 701-712 room 7

Patentee after: Shenzhen Jinhongwei Technology Co., Ltd.

Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 9 nine Wei new software park building 8 floor 701-712 room 7

Patentee before: Shenzhen Jinhongwei Technology Co.,Ltd.

Address after: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 9 nine Wei new software park building 8 floor 701-712 room 7

Patentee after: Shenzhen Jinhongwei Technology Co., Ltd.

Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 9 nine Wei new software park building 8 floor 701-712 room 7

Patentee before: Shenzhen Jinhongwei Technology Co.,Ltd.

C56 Change in the name or address of the patentee
TR01 Transfer of patent right

Effective date of registration: 20180206

Address after: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation zone before Bay Road No. 1 building 201 room A (located in Shenzhen Qianhai business secretary Co. Ltd.)

Patentee after: Shenzhen Energy Management Co., Ltd.

Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 9 nine Wei new software park building 8 floor 701-712 room 7

Patentee before: Shenzhen Jinhongwei Technology Co., Ltd.

Effective date of registration: 20180206

Address after: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation zone before Bay Road No. 1 building 201 room A (located in Shenzhen Qianhai business secretary Co. Ltd.)

Patentee after: Shenzhen Energy Management Co., Ltd.

Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 9 nine Wei new software park building 8 floor 701-712 room 7

Patentee before: Shenzhen Jinhongwei Technology Co., Ltd.

TR01 Transfer of patent right
CP01 Change in the name or title of a patent holder

Address after: 518000 Room 201, building A, No. 1, Qian Wan Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong (Shenzhen Qianhai business secretary Co., Ltd.)

Patentee after: Cloud Valley energy management (Shenzhen) Co., Ltd.

Address before: 518000 Room 201, building A, No. 1, Qian Wan Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong (Shenzhen Qianhai business secretary Co., Ltd.)

Patentee before: Shenzhen Energy Management Co., Ltd.

Address after: 518000 Room 201, building A, No. 1, Qian Wan Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong (Shenzhen Qianhai business secretary Co., Ltd.)

Patentee after: Cloud Valley energy management (Shenzhen) Co., Ltd.

Address before: 518000 Room 201, building A, No. 1, Qian Wan Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong (Shenzhen Qianhai business secretary Co., Ltd.)

Patentee before: Shenzhen Energy Management Co., Ltd.

CP01 Change in the name or title of a patent holder
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130814

Termination date: 20190110

CF01 Termination of patent right due to non-payment of annual fee