CN107272525A - A kind of fault detector - Google Patents

A kind of fault detector Download PDF

Info

Publication number
CN107272525A
CN107272525A CN201710702132.2A CN201710702132A CN107272525A CN 107272525 A CN107272525 A CN 107272525A CN 201710702132 A CN201710702132 A CN 201710702132A CN 107272525 A CN107272525 A CN 107272525A
Authority
CN
China
Prior art keywords
signal
main frame
cable
sensor
temperature
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201710702132.2A
Other languages
Chinese (zh)
Other versions
CN107272525B (en
Inventor
何春林
戚佳金
郑正仙
严性平
陈潘霞
蒋燕萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang da you Industrial Co., Ltd. Hangzhou science and technology development branch
ZHEJIANG DAYOU INDUSTRIAL CO., LTD.
State Grid Corp of China SGCC
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
HANGZHOU DAYOU TECHNOLOGY DEVELOPMENT Co Ltd
State Grid Corp of China SGCC
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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 HANGZHOU DAYOU TECHNOLOGY DEVELOPMENT Co Ltd, State Grid Corp of China SGCC, Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical HANGZHOU DAYOU TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN201710702132.2A priority Critical patent/CN107272525B/en
Priority to CN201721027398.3U priority patent/CN207352393U/en
Publication of CN107272525A publication Critical patent/CN107272525A/en
Application granted granted Critical
Publication of CN107272525B publication Critical patent/CN107272525B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423Input/output
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/21Pc I-O input output
    • G05B2219/21014Interface, module with relays
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/21Pc I-O input output
    • G05B2219/21162Detect short circuit of cable
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/25Pc structure of the system
    • G05B2219/25174Ethernet
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/25Pc structure of the system
    • G05B2219/25197Optical, glass fiber

Abstract

The invention discloses a kind of fault detector, it is acquired by temperature signal, earth-fault signal and short circuit fault signal to cable, and it is transmitted through the fiber to main frame progress signal analysis, when main frame judges that temperature signal exceedes preset value, or when grounding phenomenon occur or short circuit phenomenon occur, then connect connected local alarm and carry out alarm.As can be seen here, this fault detector can determine whether cable breaks down in time, and staff can be rapid to determine line fault section by local alarm situation, and finds out trouble point.In addition, realizing the transmission for gathering signal by optical fiber, Phototube Coupling is not only realized, Insulation Problems are efficiently solved, and make it that signal energy loss in transmitting procedure is small, is difficult by external interference.Finally, the power supply to main frame is realized by dual power supply module in the present invention, improves redundancy so that power supply is relatively reliable.

Description

A kind of fault detector
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of fault detector.
Background technology
In looped network distribution system, particularly in system largely using ring net load switch, if next stage distribution When line short fault or earth fault are there occurs in network system, the electric power system of upper level must be entered within the defined time Row disjunction, to prevent major accident.After disjunction protection occurs, the system for being under the jurisdiction of this grade of network can be caused all to stop Electricity.Maintenance personal needs to quickly find the section broken down, and fault section is opened in disjunction, so as to recover fault-free section in time Power supply.With this, you can save a large amount of times for searching faulty components, also reduce power off time and the scope having a power failure, to client and Electric power system brings doulbe-sides' victory effect.
Fault section is determined in order to quick, in the prior art, fault section is entered by third generation fault detector Row is determined.The fault detector mainly determines whether to break down by line voltage distribution, is specifically, is zero by line voltage distribution As tripping operation have a power failure Main Basiss because line voltage distribution be zero be line tripping have a power failure sufficient and necessary condition.
But, third generation fault detector can only indicate whether to break down and be pointed out after breaking down, it is impossible to chase after The time of failure generation is found with the failure logging occurred is repeated several times;And what is more important, it is impossible to the temperature of cable In real time monitoring with record, occur overtemperature can not and alarm.
The content of the invention
It is an object of the invention to provide a kind of fault detector, the temperature of cable can be monitored with recording in real time, and When detecting cable and breaking down, timely alarm.In addition, it is anti-interference to realize that the transmission to collection signal has by optical fiber Strong advantage, and improve by dual power supply module for power supply the reliability of fault detector.
In order to solve the above technical problems, the present invention provides a kind of fault detector, for the cable in power distribution network, including set The main frame that is placed at ring main unit, it is connected with the main frame, dual power supply module for power supply, the survey for being arranged at the cable The temperature sensor at temperature place, and the cable connection, the grounding sensor of the ground signalling for gathering the cable, with it is described Cable connection, the short-circuit sensor of the short-circuit signal for gathering the cable;
The temperature sensor, the grounding sensor and the short-circuit sensor are connected by optical fiber with the main frame So that collection signal is transmitted to the main frame, the main frame is connected with local alarm, and occurs exception in the collection signal When, connect the local alarm.
Preferably, in addition to the main-machine communication monitoring server being connected, the main frame by it is described collection signal with And abnormal results is sent to the monitoring server.
Preferably, the local alarm is indicator lamp.
Preferably, the temperature sensor is specifically included for sense temperature signal, and the temperature signal is converted to The temperature measurement module of electric signal, it is connected with the temperature measurement module, for controlling the first lumination of light emitting diode according to the electric signal Single-chip microcomputer;
Wherein, the optical fiber receives the optical signal of first light emitting diode, and transmits to the main frame.
Preferably, the temperature measurement module is 3.
Preferably, the short-circuit sensor is 3, is connected respectively with 3 phase lines of the cable, the grounding sensor For 1, it is connected with 3 phase lines of the cable.
Preferably, the short-circuit sensor or the grounding sensor specifically include the Current Mutual Inductance with the cable connection Device, is connected with the current transformer, and the signal for being exported according to the current transformer controls the second light emitting diode Luminous signal processing circuit;
Wherein, the optical fiber receives the optical signal of second light emitting diode, and transmits to the main frame.
Preferably, in addition to the main frame display being connected.
Preferably, the dual power supply module specifically includes the external power source introduced by communication cable and energy storage electricity Pond.
Preferably, in addition to for placing the battery compartment of the energy-storage battery.
Fault detector provided by the present invention, by the temperature signal of cable, earth-fault signal and short circuit event Barrier signal is acquired, and is transmitted through the fiber to main frame progress signal analysis, is judged that temperature signal exceedes when main frame and is preset Value, or when grounding phenomenon occur or short circuit phenomenon occur, then connect connected local alarm and carry out alarm. As can be seen here, this fault detector can determine whether cable breaks down in time, and staff can be by local alarm Situation, it is rapid to determine line fault section, and find out trouble point.In addition, the transmission for gathering signal is realized by optical fiber, it is not only real Phototube Coupling is showed, has efficiently solved Insulation Problems, and make it that signal energy loss in transmitting procedure is small, be difficult by outer Disturb on boundary.Finally, the power supply to main frame is realized by dual power supply module in the present invention, improves redundancy so that power supply It is relatively reliable.
Brief description of the drawings
In order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used in embodiment will be done simply below Introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill people For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the power network line schematic diagram of power distribution network;
Fig. 2 is a kind of structure chart of fault detector provided in an embodiment of the present invention;
Fig. 3 is the structure chart of another fault detector provided in an embodiment of the present invention;
Fig. 4 (a) is a kind of circuit diagram of temperature measurement module provided in an embodiment of the present invention;
Fig. 4 (b) is a kind of electricity of the single-chip microcomputer being connected with temperature measurement module and its peripheral circuit provided in an embodiment of the present invention Lu Tu;
Fig. 4 (c) is a kind of circuit diagram for the first light emitting diode being connected with single-chip microcomputer provided in an embodiment of the present invention;
Fig. 4 (d) is a kind of reset circuit figure being connected with single-chip microcomputer provided in an embodiment of the present invention;
Fig. 4 (e) enables circuit diagram for a kind of work being connected with single-chip microcomputer provided in an embodiment of the present invention;
Fig. 4 (f) is a kind of operating voltage detection circuit diagram being connected with single-chip microcomputer provided in an embodiment of the present invention;
Fig. 5 is a kind of circuit diagram of short-circuit sensor provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this Embodiment in invention, those of ordinary skill in the art are not under the premise of creative work is made, and what is obtained is every other Embodiment, belongs to the scope of the present invention.
The core of the present invention is to provide a kind of fault detector, and the temperature of cable can be monitored with recording in real time, and When detecting cable and breaking down, timely alarm.In addition, it is anti-interference to realize that the transmission to collection signal has by optical fiber Strong advantage, and improve by dual power supply module for power supply the reliability of fault detector.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description The present invention is described in further detail.
Fig. 1 is the power network line schematic diagram of power distribution network.As shown in figure 1, the power distribution network includes 11 ring main units, respectively 1- No. 11, the fault detector 20 of an offer of the present invention is respectively mounted at each ring main unit.If failure appears in 3 ring net cabinet Between No. 4 ring main units, now, the indicating fault 20 at No. 1 ring main unit, No. 2 ring main units and 3 ring net cabinet can be in alarm State.In specific implementation, the on-load switch of 3 ring net cabinet can be disconnected, then close breaker A, then 1,2,3 ring net cabinet and Its branch system is to restore electricity.And the power supply of 4, No. 5 cabinets, then realized by closing the opened point of No. 6 ring main units.Such quilt What is kept apart is only a segment fault cable, so as to ensure that all loads can restore electricity in time.
Fig. 2 is a kind of structure chart of fault detector provided in an embodiment of the present invention.As shown in Fig. 2 fault detector 20 For the cable in power distribution network, including it is arranged at main frame 21 at ring main unit, is connected with main frame 21, the dual power supply for power supply is supplied Electric module 22, the temperature sensor 23 being arranged at the thermometric of cable and cable connection, the ground signalling for gathering cable Grounding sensor 24 and cable connection, the short-circuit sensor 25 of the short-circuit signal for gathering cable;
Temperature sensor 23, grounding sensor 24 and short-circuit sensor 25 are connected to adopt by optical fiber 26 with main frame 21 Collection signal is transmitted to main frame 21, and main frame 21 is connected with local alarm 27, and when gathering signal generation exception, connects local report Alert device 27.
In specific implementation, the moment of temperature sensor 23 perceives cable surface temperature value, and passes through the timing transmission of optical fiber 26 To main frame 21.When temperature occurs abnormal, main frame 21 carries out fault alarm by related local alarm device 27.Grounding sensor 24 are used to detect the earth-fault current at connected cable, and short-circuit sensor 25 is used to detect at connected cable Short-circuit current, and by the optical fiber 26 with being each connected by gather signal be transferred to main frame 21.Main frame 21 passes through inside The pulse width (i.e. failure time delay) of CPU failure judgements waveform and down pulse, if collection signal has reached that failure is set The preset value put, main frame 21 can record dependent failure information, and carry out alarm by local alarm 27.
It is understood that local alarm 27 can be indicator lamp or buzzer etc..In addition, local alarm 27 can be with Including 3 indicators, such as, including 3 indicator lamps, it is respectively used to indicate alarm in terms of temperature signal, in terms of earth fault Alarm in terms of alarm and short circuit.In order to save energy consumption, indicator lamp can choose LED light.
In the present embodiment, the data transfer between main frame 21 and each sensor is communicated using optical fiber 26, and optical-fibre communications has Advantages below:
1) electric property, high mechanical strength, sealing, corrosion resistance and good ensure the finger of optical fiber under rugged environment Mark does not decline, and service life is long;
2) optical fiber electromagnetism interference performance is excellent.Optical fiber is insulating material, so not by thunder and lightning interference, the ionization of nature The change of layer and the interference of Sunspot Activities, are not also done by industrial electrical equipments such as electric railway feed line and high-tension apparatuses Disturb;
3) fibre loss is low, long transmission distance.Fibre loss can be less than 0.2dB/km, and this is than current any transmission medium Loss is all low, in unrepeatered transmission distance up to tens, kilometer even up to a hundred;
4) signal cross-talk is small, security performance is good, and size is small, lightweight, is easy to lay;
5) material source enriches, and environmental protection is good, is conducive to saving non-ferrous metal copper;
6) it is radiationless, it is difficult to eavesdrop, because the light wave of optical fiber transmission can not be run out of beyond optical fiber.
In order to allow those skilled in the art more to understand the concrete structure of main frame 21 provided by the present invention, it is given below Describe in detail.It is understood that embodiment is one kind in numerous embodiments in detail below, main frame is not represented 21 only have a kind of this embodiment.
The design of main frame 21 uses multiple functional STM single-chip microcomputers as data processing centre, in order to ensure to power in battery When battery service life, single-chip microcomputer and peripheral components select low energy-consumption electronic device.
STM series is based on aiming at the ARM that requires that high-performance, low cost, the Embedded Application of low-power consumption are specially designed Cortex-M3 kernels, are performance highest products in like product, and basic model clock frequency is 36MHz.Brand-new STM interconnected types (Connectivity) Series of MCU has full speed USB (OTG) interface, end product is being connected another USB device When can not only serve as usb host but also may act as USB slaves, also support IEEE1588 Precision Time Protocol (PTP) Ethernet connect Mouthful, realize that this agreement can reduce CPU overhead with hardware, improve the response speed of application and networked devices synchronous communication in real time. In addition, there is provided external data storage, can deposit more information.
The fault detector that the present embodiment is provided, by the temperature signal of cable, earth-fault signal and short circuit event Barrier signal is acquired, and is transmitted through the fiber to main frame progress signal analysis, is judged that temperature signal exceedes when main frame and is preset Value, or when grounding phenomenon occur or short circuit phenomenon occur, then connect connected local alarm and carry out alarm. As can be seen here, this fault detector can determine whether cable breaks down in time, and staff can be by local alarm Situation, it is rapid to determine line fault section, and find out trouble point.In addition, the transmission for gathering signal is realized by optical fiber, it is not only real Phototube Coupling is showed, has efficiently solved Insulation Problems, and make it that signal energy loss in transmitting procedure is small, be difficult by outer Disturb on boundary.Finally, the power supply to main frame is realized by dual power supply module in the present invention, improves redundancy so that power supply It is relatively reliable.
Fig. 3 is the structure chart of another fault detector provided in an embodiment of the present invention.As shown in figure 3, in above-mentioned implementation On the basis of example, preferably embodiment, in addition to the monitoring server 30 communicated to connect with main frame 21, main frame 21 will be adopted Collection signal and abnormal results are sent to monitoring server 30.
In specific implementation, main frame 21 and monitoring server 30 are connected especially by RS485 buses.Gather signal and exception As a result monitoring server 30 can be sent in real time, the region of guilty culprit is shown on the screen of monitoring server 30 and specific Position, guiding track walker determines rapidly fault section and finds out trouble point, to improving operating efficiency, shortens power off time, fast Quick-recovery is powered, and improves power supply reliability and economic benefit, there is highly important meaning.
On the basis of above-described embodiment, preferably embodiment, temperature sensor 23 is specifically included for perceiving Temperature signal, and temperature signal is converted into the temperature measurement module of electric signal, is connected with temperature measurement module, for according to the electric signal Control the single-chip microcomputer of the first lumination of light emitting diode.
Wherein, optical fiber 26 receives the optical signal of the first light emitting diode, and transmits to main frame 21.
Preferably, temperature measurement module is 3, is A phase temperature measurement modules respectively, the temperature for measuring the A phase lines in cable Signal, B phase temperature measurement modules, temperature signal, C phase temperature measurement modules for measuring the B phase lines in cable, for measuring in cable C phase lines temperature signal.In the present embodiment, the temperature measurement module in temperature sensor 23 is set into 3 can prevent it In a temperature measurement module failure, and cause wrong report phenomenon.Temperature transducer is close to cable when mounted, by temperature measurement module and connected Connect on the connector of switch, prevent thermometric from by the pollution of environment temperature, humidity and dust being caused that true temperature problem can not be reacted.
The abnormal automatic discrimination of the internal measurement of temperature sensor 23 is specially with processing:
Single-chip microcomputer can respectively obtain three temperature signals from three temperature measurement modules, and three temperature signals are dealt into master Machine 21.Main frame 21 is received after three temperature signals, and the uniformity to three temperature signals differentiates:
1) three temperature signals are preserved in rational error range after three temperature signals are averaged;
If 2) in three temperature signals, there is a temperature signal to occur exceeding allowable error scope, main frame 21 will be overproof Temperature signal reject, only by wherein two temperature signal it is average after be sent to monitoring server 30;Go out at continuous more than three times After this existing situation, main frame 21 reports the abnormal information of temperature sensor 23 to monitoring server 30.It is also turned on corresponding instruction Lamp, points out related personnel to handle in time;
If 3) three mutual errors of temperature signal exceed allowable error scope (such situation is more rare), main frame 21 Do not preserve the temperature signal this time measured (temperature signal is as abnormality processing);After continuous three times appear above this situation, Main frame reports abnormality of temperature sensors information to monitoring server, is also turned on corresponding indicator lamp, point out related personnel should and When handle;
Thermometric processing is carried out using three temperature measurement modules above, can be differentiated due to the thermometric that temperature measurement module self reason occurs Anomaly, effectively prevent the abnormal wrong report of thermometric.
In order to allow those skilled in the art more to understand the specific implementation of temperature sensor provided by the present invention, under It will be explained in text.
Fig. 4 (a) is a kind of circuit diagram of temperature measurement module provided in an embodiment of the present invention.As illustrated, containing 3 in figure Temperature measurement module, respectively U10, U11 and U12, temperature measurement module select MCP9700.The voltage end Vc of each temperature measurement module with list The P1.0 connections of piece machine, output end is connected with the P1.1 ports, P1.2 ports and P1.3 ports of single-chip microcomputer respectively.Single-chip microcomputer passes through The temperature signal of P1.1 ports, P1.2 ports and the input of P1.3 ports judges whether to meet the requirements, and specific logic, which is seen above, retouches State, this place is repeated no more.Each temperature measurement module is also grounded by electric capacity C20.
Fig. 4 (b) is a kind of electricity of the single-chip microcomputer being connected with temperature measurement module and its peripheral circuit provided in an embodiment of the present invention Lu Tu.The inter-process chip U8 of single-chip microcomputer, from MSP430 chips, power consumption itself is relatively low, in addition, electric capacity in peripheral circuit C18 is patch capacitor, and C17 is paster tantalum electric capacity, and capacitance is 10 μ F, and the two uses low energy consumption operation mode, is effectively reduced Power consumption.Single-chip microcomputer is directly powered by battery BAT2.
Fig. 4 (c) is a kind of circuit diagram for the first light emitting diode being connected with single-chip microcomputer provided in an embodiment of the present invention.Such as Shown in figure, the first LED 8 is controlled by single-chip microcomputer, and single-chip microcomputer is sent out according to coding rule and control strategy, control first Optical diode LED8 lights, and the optical signal that the first LED 8 is sent is transferred to main frame 21 by optical fiber 26, realizes logical Telecommunication function.Resistance R37 is metering function.
Fig. 4 (d) is a kind of reset circuit figure being connected with single-chip microcomputer provided in an embodiment of the present invention.In reset circuit, electricity Resistance R36 and electric capacity C19 common port is connected as reset terminal with single-chip microcomputer.
Fig. 4 (e) enables circuit diagram for a kind of work being connected with single-chip microcomputer provided in an embodiment of the present invention.Work enables electricity The P1.5 ports connection of Lu Zhong, resistance R38 and wire jumper J1 common port and single-chip microcomputer.When wire jumper J1 disconnects, single-chip microcomputer P1.5 Port detectings are to high level, and single-chip microcomputer enters holding state;When wire jumper J1 is closed, the P1.5 Port detectings of single-chip microcomputer are arrived Low level, single-chip microcomputer enters working condition.Above-mentioned working method can make temperature sensor at the inoperative place such as warehouse not Into working condition, so as to effectively reduce the power consumption of product.
Fig. 4 (f) is a kind of operating voltage detection circuit diagram being connected with single-chip microcomputer provided in an embodiment of the present invention.Work electricity In pressure detection circuit, the connection of the P1.7 ports of resistance R34 and resistance R35 common port and single-chip microcomputer, the resistance R35 other end with The P1.6 ports connection of single-chip microcomputer.When detecting operating voltage, the P1.6 ports output low level of single-chip microcomputer, P1.7 Port detectings Operational voltage value.When not detecting operating voltage, the P1.6 ports output high level of single-chip microcomputer, so as to effectively reduce power consumption.
Wherein, Fig. 4 (a)-Fig. 4 (f) constitutes complete temperature sensor.Three temperature measurement modules use interval work, measure Temperature signal in normal range (NR), monitor and record temperature change using the thermometric mode of a constant cycle;When measuring When temperature rise is larger, single-chip microcomputer accelerates detection frequency, it is ensured that system can accurately observe the change of cable temperature, simultaneously Significantly reduce the power consumption of product.
Temperature sensor 23 is preserved the temperature measured every time, before a temperature uploads point arrival, by this cycle The temperature inside measured is averaged, and is then communicated by optical fiber 26, and this temperature value is uploaded into main frame 21, and because temperature is passed Sensor 23 has 3 temperature measurement modules, and therefore, main frame 21 can be obtained by the temperature signal that 3 temperature measurement modules are obtained, so as to carry out Judgement described above, here is omitted.
On the basis of above-described embodiment, preferably embodiment, short-circuit sensor 25 is 3, respectively with cable 3 phase lines connection, grounding sensor 24 be 1, be connected with 3 phase lines of cable.
In the present embodiment, short-circuit sensor 25 has 3, and respectively A phases short-circuit sensor, B phases short-circuit sensor and C phases is short Road sensor, the structure of three is all identical.Each short-circuit sensor 25 is used to detect that this mutually whether there is short circuit phenomenon.Connect The structure of ground sensor 24 is identical with short-circuit sensor 25, why for 1, is due to when singlephase earth fault occurs in cable When, when causing the three-phase current vector summation to be not zero, therefore, the effect of grounding sensor 24 is exactly to detect that three-phase current vector is total Whether it is zero, if be not zero, by electric signal transmission to main frame 21.For short-circuit sensor 25, grounding sensor 24, remove Outside internal battery, electric energy can also be obtained from short circuit current flow, short circuit current flow there is provided powering to use to sensor, sensing is improved Device service life.
Fig. 5 is a kind of circuit diagram of short-circuit sensor provided in an embodiment of the present invention.Preferably embodiment, short-circuit Sensor 25 specifically includes the current transformer K1 with cable connection, is connected with current transformer, for according to Current Mutual Inductance The signal of device K1 outputs controls the second lumination of light emitting diode D2 signal processing circuit.Wherein, optical fiber 26 receives second and lighted Diode D2 optical signal, and transmit to main frame 21.
Because grounding sensor 24 is identical with the structure of short-circuit sensor 25, only current transformer K1 connected mode is not Together, and different from the turn ratio to current transformer K1 induced power, therefore, the present invention is repeated no more.
As shown in figure 5, signal processing circuit specifically includes first resistor R1, second resistance R2,3rd resistor R3, the 4th electricity Hinder R4, the 5th resistance R5, the 6th resistance R6, adjustable potentiometer R7, the 8th resistance R8, two-way killer tube D1, full-bridge rectifier D3, Voltage detector U1, PNP type triode Q1.
Wherein, current transformer K1 is in parallel with two-way killer tube D1, first resistor R1 and full-bridge rectifier D3 successively.Entirely The negative pole ground connection of bridge rectifier D3 output end, the positive pole of full-bridge rectifier D3 output end respectively with second resistance R2 first The first end connection at end, 3rd resistor R3 first end, PNP type triode Q1 emitter stage and the 6th resistance R6.3rd electricity Resistance R3 the second end be connected with adjustable potentiometer R7 the first fixing end and the 4th resistance R4 first end, adjustable potentiometer R7 with Second fixing end is connected with the 8th resistance R8 first end, the 8th resistance R8 the second end ground connection, second resistance R2 the second end It is connected with the second light emitting diode D2 positive pole, the second light emitting diode D2 negative pole connects with voltage detector U1 output end Connect, voltage detector U1 input is connected with adjustable potentiometer R7 sliding end.Second light emitting diode D2 negative pole also with 5th resistance R5 first end connection, the 5th resistance R5 the second end and the 6th resistance R6 the second end and PNP type triode Q1 Base stage connection, PNP type triode Q1 colelctor electrode is connected with the 4th resistance R4 the second end.
Short-circuit sensor 25 and grounding sensor 24 have identical operation principle, using highly sensitive Current Mutual Inductance sense Current signal should be gone out, and voltage signal is converted to by first resistor R1.When electric current exceedes set point, voltage detector U1 inspections After survey voltage transfinites, low level is exported, and lights the second light emitting diode D2, the second light emitting diode D2 by optical fiber 26, will Fault-signal is transferred to main frame 21.
In specific implementation, alarm current during short trouble can be set, it is possible to understand that ground is, alarm current, delay Time, adjustment can be needed when dispatching from the factory according to client.
A) action current scope is continuously adjustabe in 400A to 1600A, factory, and factory default is 630A;
B) it is delayed:40~300ms is adjustable in factory, and factory default is 40ms;
C) precision:< ± 10% (in operating temperature range).
When this product is designed, in short trouble context of detection, Microcomputer Protection principle is introduced into the designing technique of this product, I.e. using the method for detection electric current ratio-change If/I0 (ratio of fault current and load current) mutation value, and combined circuit is jumped Lock has a power failure to detect short trouble.This ratio-change mutation value, according to the curved line arithmetic built in fault detector and according to load The size automatic dynamic of electric current is adjusted, and overcomes the static changeless defect of current break value of " current break method " use.
Therefore this product is not influenceed by line construction, management mode, geographical environment, the even time of running, from root The mistake of the fault detector presence in the market based on " excessively stream method or " and " current break method " design principle is overcome in sheet Alert defect is alarmed or fails to report, therefore short trouble detection is accurately and reliably.
For the fault detector designed using current break method, this fault detector has a power failure to line tripping Basis for estimation, which have also been made, thoroughly to be improved, and is zero Main Basiss having a power failure as tripping operation using line voltage distribution, because line voltage distribution is Zero is the sufficient and necessary condition that line tripping has a power failure, and this is another relative to the fault detector designed using current break method Individual significant design break-through point.
In terms of Neutral point nonearthing system phase-to-ground fault detection, this fault detector employs transient mutation Method.
This method mainly uses line-to-ground fault to occur each signal frequency component (300Hz of moment circuit transient ~4000Hz component of signal) root-mean-square value undergos mutation this feature, detects the mutation increment of the root-mean-square value of these signals, And the phenomenon for declining this mutation increment combined circuit voltage (voltage-to-ground) is used as the Main Basiss of detection earth fault.
Because being grounded the Sudden Changing Rate of moment, each high-frequency interferencing signal not existed by circuit and circuit excitation surge current shadow Ring, it is easy to reliable detection, therefore use this method to overcome in the market using transient size as the earth fault of criterion The limitation of detection method, also overcomes the inaccuracy of first half-wave method, strong antijamming capability, and fault detect is accurately and reliably.This The brand-new fault detection technique that fault detector is used, is at present using the fault detector technology of current break method design There is qualitative leap.
This fault detector can adjust fault eigenvalue according to various actual track automatic dynamics, not by line construction, fortune Row way to manage, geographical environment, load change, the influence of the time of running, it is applied widely, really meet the need of different user Will, and it is easy to large-scale production.
In specific implementation, alarm current during earth fault can be set, it is possible to understand that ground is, alarm current, delay Time, adjustment can be needed when dispatching from the factory according to client.
A) alarm current:Continuously adjustabe in action current scope 5A~100A, factory;Factory-default is 20A;
B) it is delayed:40~300ms is adjustable in factory, factory default 150ms;
C) precision:< ± 10% (in operating temperature range).
The electric current (zero-sequence current) of grounding sensor 24 is realized using the method for detection three-phase current summation.In normal condition Its lower value should be zero, and fault current detection point range is that zero-sequence current is 5A~100A, and electric current is smaller, it is desirable to grounding sensor 24 have very high sensitivity.
In order to ensure good high_voltage isolation effect, the communication between grounding sensor 24 and main frame is entered by optical fiber 26 Row data transfer, battery can not be set inside grounding sensor 24, normal work power supply relies on the sensing of grounding sensor 24 Signal proposes very high requirement come what is ensured to the work power taking of grounding sensor 24.
The requirement of grounding sensor 24 detects 5A electric currents, and the electric current of short-circuit sensor 25 reaches 400~1600A, minimum Current value differs 80 times, and at a relatively high requirement is proposed to the Current Mutual Inductance part of grounding sensor 24.
Flow point requirement is crossed in K1 level generation 10V of current transformer, 15mA voltage according to grounding sensor 24;
It is required that current transformer K1 is output as 10V*15mA=0.15W.
According to actual conditions, for the ease of installing, the magnet ring internal diameter that grounding sensor 24 senses and short-circuit sensor 25 big 2 More than times, the magnet ring effective length designed at present is 450mm, and the magnet ring effective length of short-circuit sensor 25 is 215mm.
The magnetic circuit of current grounding sensor 24 is made up of two parts, and 165mm magnetic circuits use silicon steel band, and also 50mm is used High-carbon round steel constitutes axle class shape, and induction coil is on axle class high-carbon round steel, and the connection of two kinds of materials uses riveting with crimping Processing, flux loss is reduced as far as possible, although have passed through a variety of considerations, flux loss can't neglect, produce magnetic loss it is main because Element:
A) connection of two kinds of materials generates leakage field using riveting;
B) connection of two kinds of materials is using crimping, and contact area is smaller;
C) induction region uses axle class high-carbon round steel, and magnetic induction can produce larger vortex, cause magnetic loss.
For these problems, this product design uses effective magnet ring length for 450mm multi-disc silicon steel bands, with following excellent Point:
A) single permeability magnetic material is used, it is to avoid the junction loss between different materials;
B) induction coil is directly installed on direct-coupling in a region of silicon steel band, and magnetic induction is more efficient;
C) single silicon steel band is used, is handled in closed loop junction using the crimping of large area, magnetic flux closed loop effect is more preferable;
D) using multi-disc silicon steel band composition closed loop, it compensate for that effective magnet ring length is long and the dispersion loss that causes;
E) because primary current is small (minimum value is 5A), in order to obtain bigger power, induction coil using it is more around The number of turn processed, to obtain corresponding power.
After being handled more than, the induced voltage in grounding sensor 24 has reached design requirement.
On the basis of above-described embodiment, in addition to the display 28 being connected with main frame 21.
As shown in figure 3, being provided with main frame 21 on display 28, and main frame 21, button is correspondingly set, main frame 21 To abnormal results and sampled signal can by the button on main frame 21, from display 28 inquire about, it is preferable that display 28 be LCDs, low in energy consumption using special lcd drive chip, and display is clear.Therefore, line maintenance personnel are according to finger Show the flicker of lamp, it is determined that there is failure, then by the button on main frame 21, fault message is observed from display 28, can be with Judge fault section rapidly.
Specifically, the panel of main frame 21 is provided with 3 buttons, it is " movement ", " setting ", " confirmation " key respectively.Use panel Upper button, it is possible to achieve historical information inquire about, for example can with the enquiry of historical data date, the historical data of each phase cable temperature, Same day maximum temperature, mean temperature, environment mean temperature etc.;Can also be by button, to cable alarm temperature value, threephase cable Temperature imbalance value, ambient temperature value alarm, the machine address, real-time time are configured;In addition, produce alarm after, ground connection, A phases, B phases, C phase currents directly indicate that remaining can check specific fault message by liquid crystal after transfiniting in panel leds.Therefore Barrier information includes:Battery undervoltage alarm, the alarm of liquidus temperature overload alarm, liquidus temperature imbalance, environment temperature overload alarm Deng.
On the basis of above-described embodiment, dual power supply module 22 specifically includes the external electrical introduced by communication cable Source and energy-storage battery.
In specific implementation, main frame 21 uses dual power supply, internal standby lithium pond (one kind of energy-storage battery China) With the external power source introduced by communication cable, when no external power source is introduced, main frame 21 automatically switches to internal standby electricity Source powers.
The external power source 9--24Vdc of main frame 21, static power:<200 milliwatts, maximum peak power:<400 milliwatts;When upper electric Operating current is not more than 15mA (12VDC), and peak-peak operating current is not more than 30mA (12VDC);Main frame 21 is without external electrical Under the power supply state of source, powered using internal standby lithium pond, quiescent dissipation is not more than 10uA (when LED light is not bright).It is preferred that Ground, uses Large Copacity, the ER14250 high-capacity lithium ion battery thionyl chloride battery lithium batteries of low self-discharge, it is ensured that the use longevity of product Life.
This product uses Large Copacity, the ER14250 high-capacity lithium ion batteries thionyl chloride battery lithium electricity of low self-discharge in design Pond, mainly with following advantages:
Cell voltage 3.6V, battery rated capacity 1200mAH, battery size diameter 14mm length 25mm, can not fill once Property lithium battery, lithium battery shelf life be 10 years;
The voltage of lithium-manganese dioxide battery is up to more than 3V, is twice of common batteries, and this just anticipates for electrical appliance Taste, which, can save power source space and mitigation weight;
Excellent discharge performance:Even across long-term electric discharge, it still keeps stable operating voltage, and this is dramatically improved The reliability of electrical appliance reaches using electrical equipment the degree of non-maintaining (need not change battery substantially);
Superior temperature characterisitic, the application of the good organic electrolyte solution of high-quality, electric conductivity, enables battery -20 DEG C~60 DEG C of temperature ranges in normally work, by special process and formula, -40~80 DEG C of operating temperature can also be met It is required that;
Good leak resistance, reliable sealing structure and the electro-hydraulic and positive and negative electrode active material using high-quality, make battery With good leak resistance;
Long-life working characteristics forms a protection film layer due to the effect of organic matter and lithium on the surface of cathode of lithium, This is that lithium battery can keep the constant basic reason of its performance for a long time, along with accurate, reliable cell sealing-structure and The use of high stability active material, enables the drop rate of holding in year of self-discharge of battery to control in the level less than 2%.
On the basis of above-described embodiment, in addition to for placing the battery compartment of energy-storage battery.
In the present embodiment, by setting battery compartment for energy-storage battery, so as to when energy-storage battery breaks down, more facilitate Replacing.
Fault detector provided by the present invention is described in detail above.The embodiment of each in specification is used and passed The mode entered is described, and what each embodiment was stressed is phase between the difference with other embodiment, each embodiment With similar portion mutually referring to.For device disclosed in embodiment, because it is relative with method disclosed in embodiment Should, so description is fairly simple, related part is referring to method part illustration.It should be pointed out that for the art For those of ordinary skill, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, These are improved and modification is also fallen into the protection domain of the claims in the present invention.
It should also be noted that, in this manual, such as first and second or the like relational terms be used merely to by One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged Except also there is other identical element in the process including the key element, method, article or equipment.

Claims (10)

1. a kind of fault detector, for the cable in power distribution network, it is characterised in that including be arranged at main frame at ring main unit, Be connected with the main frame, dual power supply module for power supply, the temperature sensor being arranged at the thermometric of the cable, with The cable connection, the grounding sensor of the ground signalling for gathering the cable and the cable connection, for gathering State the short-circuit sensor of the short-circuit signal of cable;
The temperature sensor, the grounding sensor and the short-circuit sensor are connected to incite somebody to action by optical fiber with the main frame Collection signal is transmitted to the main frame, and the main frame is connected with local alarm, and when the collection signal occurs abnormal, is connect Lead to the local alarm.
2. fault detector according to claim 1, it is characterised in that the also monitoring including being connected with the main-machine communication Server, the main frame sends the collection signal and abnormal results to the monitoring server.
3. fault detector according to claim 1, it is characterised in that the local alarm is indicator lamp.
4. fault detector according to claim 2, it is characterised in that the temperature sensor is specifically included for perceiving Temperature signal, and the temperature signal is converted into the temperature measurement module of electric signal, is connected with the temperature measurement module, for according to institute State the single-chip microcomputer that electric signal controls the first lumination of light emitting diode;
Wherein, the optical fiber receives the optical signal of first light emitting diode, and transmits to the main frame.
5. fault detector according to claim 4, it is characterised in that the temperature measurement module is 3.
6. fault detector according to claim 2, it is characterised in that the short-circuit sensor is 3, respectively with it is described 3 phase lines connection of cable, the grounding sensor is 1, is connected with 3 phase lines of the cable.
7. fault detector according to claim 6, it is characterised in that the short-circuit sensor or the grounding sensor The current transformer with the cable connection is specifically included, is connected with the current transformer, for mutual according to the electric current The signal of sensor output controls the signal processing circuit of the second lumination of light emitting diode;
Wherein, the optical fiber receives the optical signal of second light emitting diode, and transmits to the main frame.
8. the fault detector according to claim 1-7 any one, it is characterised in that also including being connected with the main frame Display.
9. the fault detector according to claim 1-7 any one, it is characterised in that the dual power supply module tool Body includes the external power source and energy-storage battery introduced by communication cable.
10. the fault detector according to claim 1-7 any one, it is characterised in that also including described for placing The battery compartment of energy-storage battery.
CN201710702132.2A 2017-08-16 2017-08-16 A kind of fault detector Active CN107272525B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201710702132.2A CN107272525B (en) 2017-08-16 2017-08-16 A kind of fault detector
CN201721027398.3U CN207352393U (en) 2017-08-16 2017-08-16 A kind of fault detector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710702132.2A CN107272525B (en) 2017-08-16 2017-08-16 A kind of fault detector
CN201721027398.3U CN207352393U (en) 2017-08-16 2017-08-16 A kind of fault detector

Publications (2)

Publication Number Publication Date
CN107272525A true CN107272525A (en) 2017-10-20
CN107272525B CN107272525B (en) 2019-10-18

Family

ID=72474040

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201721027398.3U Active CN207352393U (en) 2017-08-16 2017-08-16 A kind of fault detector
CN201710702132.2A Active CN107272525B (en) 2017-08-16 2017-08-16 A kind of fault detector

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201721027398.3U Active CN207352393U (en) 2017-08-16 2017-08-16 A kind of fault detector

Country Status (1)

Country Link
CN (2) CN207352393U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107976602A (en) * 2017-11-14 2018-05-01 长园深瑞继保自动化有限公司 High-tension cable metal outer jacket grounding circulation on-line monitoring system
CN108362970A (en) * 2018-01-31 2018-08-03 苏州市普金电力成套设备有限公司 A kind of high efficiency smart fault detect transmitting device
CN109298362A (en) * 2018-09-10 2019-02-01 国网江苏省电力有限公司电力科学研究院 A kind of distribution line failure indicator three-phase synchronous method for testing precision, device and system
CN109358267A (en) * 2018-10-09 2019-02-19 国网湖南省电力有限公司 A kind of distribution line power failure monitoring method based on fault detector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207352393U (en) * 2017-08-16 2018-05-11 杭州大有科技发展有限公司 A kind of fault detector
CN110398615A (en) * 2019-08-02 2019-11-01 浙江帕博电力科技有限公司 A kind of temperature measuring type fault detector with coiling function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267922A (en) * 2013-05-15 2013-08-28 国家电网公司 Intelligent cable short circuit grounding and temperature fault indicator
CN103884961A (en) * 2014-03-12 2014-06-25 珠海创能科世摩电气科技有限公司 Cable fault on-line monitoring system
CN203870190U (en) * 2014-04-30 2014-10-08 杭州欣美成套电器制造有限公司 Fiber-style grounding and short-circuit fault indicator
CN205353270U (en) * 2016-01-29 2016-06-29 珠海创能科世摩电气科技有限公司 Intelligent cable fault indicator
CN205720525U (en) * 2016-05-30 2016-11-23 珠海优特电力科技股份有限公司 Cable line fault indicates device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207352393U (en) * 2017-08-16 2018-05-11 杭州大有科技发展有限公司 A kind of fault detector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267922A (en) * 2013-05-15 2013-08-28 国家电网公司 Intelligent cable short circuit grounding and temperature fault indicator
CN103884961A (en) * 2014-03-12 2014-06-25 珠海创能科世摩电气科技有限公司 Cable fault on-line monitoring system
CN203870190U (en) * 2014-04-30 2014-10-08 杭州欣美成套电器制造有限公司 Fiber-style grounding and short-circuit fault indicator
CN205353270U (en) * 2016-01-29 2016-06-29 珠海创能科世摩电气科技有限公司 Intelligent cable fault indicator
CN205720525U (en) * 2016-05-30 2016-11-23 珠海优特电力科技股份有限公司 Cable line fault indicates device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107976602A (en) * 2017-11-14 2018-05-01 长园深瑞继保自动化有限公司 High-tension cable metal outer jacket grounding circulation on-line monitoring system
CN108362970A (en) * 2018-01-31 2018-08-03 苏州市普金电力成套设备有限公司 A kind of high efficiency smart fault detect transmitting device
CN109298362A (en) * 2018-09-10 2019-02-01 国网江苏省电力有限公司电力科学研究院 A kind of distribution line failure indicator three-phase synchronous method for testing precision, device and system
CN109358267A (en) * 2018-10-09 2019-02-19 国网湖南省电力有限公司 A kind of distribution line power failure monitoring method based on fault detector

Also Published As

Publication number Publication date
CN107272525B (en) 2019-10-18
CN207352393U (en) 2018-05-11

Similar Documents

Publication Publication Date Title
CN201965190U (en) Insulation detecting device for direct current system
US8067946B2 (en) Method for repairing a transmission line in an electrical power distribution system
CN103293443B (en) A kind of distribution network overhead line Earth design method
CN100533081C (en) Switch cabinet contact temperature monitoring and alarming system
CN102437646B (en) Wireless temperature and humidity monitoring device for high-voltage switch cabinet
CN204731317U (en) A kind of intelligentized earth resistance tester
CN104092310B (en) A kind of intelligent power distribution monitoring and energy management system backstage
CN202533545U (en) Power transmission network fault detection system based on internet of things technology
CN201555917U (en) Power system fault indicating device
CN201532416U (en) Intelligent cable monitor
CN102937675A (en) Real-time data collecting and fault positioning system of power distribution network and working method thereof
CN204177912U (en) Based on Distribution Network Failure early warning and the positioning system of GIS application
CN103091602B (en) Power line carrier wave online fault detection device
CN100495047C (en) Apparatus and method for measuring direct current branch insulation resistance utilizing unbalanced bridge
WO2014154164A1 (en) Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network
CN101738565B (en) Adaptive fault indicator
CN203422438U (en) Real-time monitoring and fault location system for overhead lines of power distribution network
CN102798786A (en) Universal intelligent lightning protection monitoring module and method
CN100557731C (en) A kind of electronic mutual inductor with anti-stealing electricity function
CN101446618A (en) Real-time monitoring system of faults of overhead lines of distribution network
CN103954816A (en) Inelegant remote anti-electricity-stealing inspection method
CN203350394U (en) Cable fault locating and temperature load on-line monitoring system
CN202854252U (en) Real-time data acquisition and fault locating system of power distribution network
CN204882720U (en) Intelligent computer direct current system monitoring facilities
CN203688090U (en) Online cable temperature monitoring system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
TA01 Transfer of patent application right

Effective date of registration: 20181108

Address after: 310009 158 Jianguo South Road, Hangzhou, Zhejiang

Applicant after: ZHEJIANG DAYOU INDUSTRIAL CO., LTD.

Applicant after: Zhejiang da you Industrial Co., Ltd. Hangzhou science and technology development branch

Applicant after: State Grid Zhejiang Electric Power Co., Ltd. Hangzhou power supply company

Applicant after: State Grid Corporation of China

Address before: 310051 No. 263, MII Hou Wang Road, Binjiang District Xi Xing street, Hangzhou, Zhejiang.

Applicant before: Hangzhou Dayou Technology Development Co., Ltd.

Applicant before: Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Company

Applicant before: State Grid Corporation of China

TA01 Transfer of patent application right
CB02 Change of applicant information

Address after: 310051 No. 263, MII Hou Wang Road, Binjiang District Xi Xing street, Hangzhou, Zhejiang.

Applicant after: Hangzhou Dayou Technology Development Co., Ltd.

Applicant after: Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Company

Applicant after: State Grid Corporation of China

Address before: 310051 No. 263, MII Hou Wang Road, Binjiang District Xi Xing street, Hangzhou, Zhejiang.

Applicant before: Hangzhou Dayou Technology Development Co., Ltd.

Applicant before: Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Company

Applicant before: State Grid Corporation of China

GR01 Patent grant
GR01 Patent grant