CN203504294U - Online monitoring early-warning system of operating conditions of power distribution equipment - Google Patents
Online monitoring early-warning system of operating conditions of power distribution equipment Download PDFInfo
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- CN203504294U CN203504294U CN201320607399.0U CN201320607399U CN203504294U CN 203504294 U CN203504294 U CN 203504294U CN 201320607399 U CN201320607399 U CN 201320607399U CN 203504294 U CN203504294 U CN 203504294U
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- switching equipment
- controller switching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The utility model relates to an online monitoring system of operating conditions of power distribution equipment. The online monitoring early-warning system of the operating conditions of the power distribution equipment is disclosed. For a power distribution station and a power distribution substation administered by the power distribution station, the power distribution station is equipped with an early-warning computer, a wireless network communication base station is also established in the power distribution station, each distribution transformer is equipped with a power distribution equipment detection early-warning terminal, the power distribution equipment detection early-warning terminals are provided with wireless transmitting receiving communication modules, and the power distribution equipment detection early-warning terminals are wirelessly connected with the wireless network communication base station through the wireless transmitting receiving communication modules; the early-warning computer of the power distribution station is connected with the wireless network communication base station through a receiver having a two-way communication module; and the early-warning computer of the power distribution station, the power distribution equipment detection early-warning terminals and the wireless network communication base station form the online monitoring early-warning system of the operating conditions of the power distribution equipment. An implementation of the online monitoring early-warning system is conductive to providing a high-reliability and high-quality electrical environment for end users of a power distribution system.
Description
Technical field
The utility model relates to a kind of distribution line and equipment on-line monitoring system, particularly relates to a kind of controller switching equipment operating mode on-line monitoring early warning system.
Background technology
Distribution system belongs to the end for electricity consumption, in traditional operational management process, the often for want of operational management of science, cause electricity consumption Frequent Accidents, as: because high-voltage insurance falls or fuse opening and low-tension fuse blow the phase-deficient operation causing, can cause three-phase power-equipment and household electrical appliance to burn; Three-phase current unbalance, can make zero line loop current increase, and Low-voltage Line Loss is increased, and even blows zero line, thereby causes abnormal overvoltage to burn household electrical appliance; The impact of the operation of distribution transformer overburden and harmonic voltage, can make transformer temperature rise increase, and even burns; High-voltage arrester punctures ground connection, can cause 10kV line tripping power failure etc.These, all directly have influence on the power supply reliability of distribution system.
Therefore, understand in time the working condition of distribution line and equipment, realize intelligent power distribution automation and detect early warning, electric power system is realized to Intellectualized monitoring significant, contribute to improve the managerial skills of distribution system, accomplish to prevent trouble before it happens, and can obtain facility information and rush towards accurately and fast scene in the very first time and carry out accident treatment, improve the reliability of power supply.Especially the in the situation that of Present Domestic power supply supply of electric power peak period deficiency, need especially intelligent management of power supply and power utilization, to the direct distribution load of terminal temperature difference, and can carry out long-haul telemetry, remote signalling, remote control, reach the object of auto-control load.Distribution system is intelligent, the raising of automated control technology, will play very big improvement to the safe operation of electric power system controller switching equipment.
At distribution transformer, 10kV on-load switch, the block switch of operation, owing to not monitoring in real time, be substantially out of order at present, by user notification, overhauled; Such operation of power networks state, will certainly cause power supply quality low, and device damage rate is high.Therefore,, if popularize and adapt to the transformation needs of distribution system intellectuality, automation in an all-round way, can play positive impetus to distribution system technological progress.And this problem that current those skilled in the art are thinking deeply always and constantly inquiring into just.
Utility model content
The problem that the utility model exists for prior art, proposes a kind of controller switching equipment operating mode on-line monitoring early warning system, its objective is and provides highly reliable, high-quality power utilization environment for distribution system terminal temperature difference.
To achieve these goals, the technical scheme that the utility model adopts is:
A kind of controller switching equipment operating mode on-line monitoring early warning system, power distribution station for Yi Ge power supply station and jurisdiction thereof, power supply station's configuration early warning computer, and set up wireless communication base station, each distribution transformer is equipped with a controller switching equipment and detects Forewarning Terminal, described controller switching equipment detects Forewarning Terminal and is provided with wireless transmission received communication module, and described controller switching equipment detects Forewarning Terminal and is connected with wireless communication base station radio by described wireless transmission received communication module; Described power supply station early warning computer is connected with wireless communication base station by a receiver with bi-directional communication modules; By described power supply station early warning computer, controller switching equipment detection Forewarning Terminal and described wireless communication base station, form controller switching equipment operating mode on-line monitoring early warning system.
Described controller switching equipment operating mode on-line monitoring early warning system, also comprises mobile terminal, and each electrician of power supply station or shift electrician are equipped with a mobile terminal with bidirectional wireless communication function, and described mobile terminal is by wireless communication base station connecting system; Described power supply station early warning computer is connected with early warning display screen and warning device, and by thering is receiver and wireless communication base station and each controller switching equipment detection Forewarning Terminal and the communication of mobile terminal two-way interactive of bi-directional communication modules.
Described controller switching equipment operating mode on-line monitoring early warning system, described controller switching equipment detects Forewarning Terminal and includes transformer temperature signal transducer, leakaging signal detecting circuit, harmonic signal Acquisition Circuit, voltage signal acquisition circuit, current signal Acquisition Circuit, switch condition detection circuit, lightning arrester leakage detecting sensor and microcontroller system circuit;
Described transformer temperature signal transducer, leakaging signal detecting circuit, switch condition detection circuit, lightning arrester leakage detecting sensor output signal access respectively described microcontroller system circuit;
Described harmonic signal Acquisition Circuit detects analytic unit circuit by harmonic wave and accesses described microcontroller system circuit;
Described voltage signal acquisition circuit, current signal Acquisition Circuit access described microcontroller system circuit by electrical parameters detection analytic unit circuit;
The output of described microcontroller system circuit is connected with output control terminal mouth circuit, and microcontroller system circuit is controlled 10kV disconnect or 400V circuit breaker or the instruction of A.C. contactor break-make by described output control terminal mouth circuit output; Microcontroller system circuit connects wireless transmission received communication module by PORT COM.
Described controller switching equipment operating mode on-line monitoring early warning system, is connected with fiber optic data communication module with described microcontroller system circuit, and described microcontroller system circuit is realized and the communicating by letter of ancillary equipment by described fiber optic data communication module; Described controller switching equipment detects Forewarning Terminal and also comprises back work power circuit; Back work power circuit is used for AC power through three transformer pressure-reducings, rectification, for this terminal provides DC voltage-stabilizing working power.
Described controller switching equipment operating mode on-line monitoring early warning system, transformer temperature signal transducer is arranged in distribution system transformer shell or conservator, and temperature signal transducer output connects microcontroller system circuit input.
Leakaging signal detecting circuit input connects earth detector zero sequence current mutual inductor, and output connects the input of microcontroller system circuit; When electric leakage signal surpasses set point (200-500mA), by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out electric leakage signal early warning.
Lightning arrester leakage detecting sensor one end is connected in earth detector zero sequence current mutual inductor, and the other end connects microcontroller system circuit input.When leakage current of an arrester surpasses set point (≤20mA) time, by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out leakage current of an arrester early warning.
Described controller switching equipment operating mode on-line monitoring early warning system, harmonic signal Acquisition Circuit is output harmonic wave signal after instrument transformer coupling, electric resistance partial pressure, capacitor filtering; Described harmonic wave detects analytic unit circuit for the harmonic signal sampling is carried out accessing microcontroller system circuit after dividing potential drop, shaping; Described electrical parameters detection analytic unit circuit adopts A/D modular converter that the voltage signal sampling, current signal, three-phase imbalance current signal are processed, and then accesses microcontroller system circuit.
Described microcontroller system circuit input is connected with the output of electrical parameters detection analytic unit circuit, and is connected with the output of described voltage signal acquisition circuit, to read three-phase voltage signal; When three-phase voltage signal surpasses set point (420-450V), by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out abnormal voltage early warning.
Described microcontroller system circuit input is connected with the output of electrical parameters detection analytic unit circuit, and is connected with described current signal Acquisition Circuit, to read three-phase current signal and three-phase imbalance current signal; When three-phase current or three-phase imbalance current signal surpass set point (Bu balance Du≤50%), by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out three-phase current overcurrent or the early warning of three-phase imbalance electric current.
Described microcontroller system circuit input is connected with the output of electrical parameters detection analytic unit circuit, and is electrically connected to obtain harmonic analysis signal with described harmonic wave detection analytic unit circuit with described harmonic signal Acquisition Circuit.When harmonic analysis signal surpasses set point (Shi Zhen Du≤30%), by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out the early warning of harmonic analysis signal.
The useful good effect of utility model:
1, the utility model controller switching equipment operating mode detects early warning system online, utilize computer technology, singlechip technology, automated control technology and wireless network communication technique and develop, can control by comparatively economic, the desirable distribution system automation of realizing, its designing technique has the advantages that economic cost performance is high, the application of controller switching equipment operating state on-line monitoring early warning system technology, will improve the power supply reliability of power distribution network end electricity consumption, carry out more efficiently field accident processing, improved power supply quality.
2, the utility model is from the digitlization of a kind of Long-distance Control protection for controller switching equipment, real-time status and Data Detection function, intelligentized online detection monitoring early-warning device.
Accompanying drawing explanation
Fig. 1 is system configuration schematic diagram of the present utility model;
Fig. 2 is operation principle schematic diagram of the present utility model.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
embodiment 1
As shown in Figure 1, the utility model controller switching equipment operating mode on-line monitoring early warning system, power distribution station for Yi Ge power supply station and jurisdiction thereof, power supply station's configuration early warning computer, and set up wireless communication base station, each distribution transformer is equipped with a controller switching equipment and detects Forewarning Terminal, and described controller switching equipment detects Forewarning Terminal and is provided with wireless transmission received communication module, and described controller switching equipment detects Forewarning Terminal and is connected with wireless communication base station radio by described wireless transmission received communication module; Described power supply station early warning computer is connected with wireless communication base station by a receiver with bi-directional communication modules; By described power supply station early warning computer, controller switching equipment detection Forewarning Terminal and described wireless communication base station, form controller switching equipment operating mode on-line monitoring early warning system.
Described both-way communication receiver, can adopt mobile communication module, for transmitting and receiving signal.
Embodiment 2
Referring to Fig. 1, Fig. 2.Controller switching equipment operating mode on-line monitoring early warning system described in the present embodiment, difference from Example 1 is: specifically disclose a kind of controller switching equipment and detect Forewarning Terminal structure.
As shown in Figure 2, described controller switching equipment detects Forewarning Terminal and includes transformer temperature signal transducer, leakaging signal detecting circuit, harmonic signal Acquisition Circuit, voltage signal acquisition circuit, current signal Acquisition Circuit, switch condition detection circuit, lightning arrester leakage detecting sensor and microcontroller system circuit; Described transformer temperature signal transducer, leakaging signal detecting circuit, switch condition detection circuit, lightning arrester leakage detecting sensor output signal access respectively described microcontroller system circuit;
Described harmonic signal Acquisition Circuit detects analytic unit circuit by harmonic wave and accesses described microcontroller system circuit; Described voltage signal acquisition circuit, current signal Acquisition Circuit access described microcontroller system circuit by electrical parameters detection analytic unit circuit; The output of described microcontroller system circuit is connected with output control terminal mouth circuit, and microcontroller system circuit is controlled 10kV disconnect or 400V circuit breaker or the instruction of A.C. contactor break-make by described output control terminal mouth circuit output; Microcontroller system circuit connects wireless transmission received communication module by PORT COM.Switching signal detection port circuit detects for the on off state of 10kV disconnect or 400V circuit breaker or A.C. contactor.
Transformer temperature signal acquisition circuit is for distribution system transformer temperature signals collecting.When transformer temperature surpasses set temperature value (80-85 ℃), by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer and the electrician of small towns power supply station mobile phone, carry out transformer temperature rise early warning;
Leakaging signal detecting circuit adopts zero sequence current mutual inductor, for distribution system detection of electrical leakage;
Lightning arrester leakage detecting sensor, for the detection of distribution system leakage current of an arrester;
Voltage signal acquisition circuit is by A, B, C three-phase alternating current output voltage signal after resistance step-down; Stating current signal Acquisition Circuit is by A, B, C three-phase current output current signal after current transformer, load resistance.
Harmonic signal Acquisition Circuit is the circuit of output harmonic wave signal after instrument transformer coupling, electric resistance partial pressure, capacitor filtering; Described harmonic wave detects analytic unit circuit and adopts analog to digital converter that the harmonic signal sampling is carried out to dividing potential drop, shaping; Integrated electric parameter detecting element circuit is for the voltage signal sampling, current signal, three-phase imbalance current signal are analyzed, calculated.
Embodiment 3
Referring to Fig. 1, Fig. 2.The present embodiment controller switching equipment operating mode detects early warning system online, include temperature signal transducer, leakaging signal detecting circuit, voltage signal acquisition circuit, current signal Acquisition Circuit, on off state detection port circuit, output control terminal mouth circuit, lightning arrester leakage detecting sensor, electrical parameters detection analytic unit circuit, harmonic signal Acquisition Circuit, harmonic wave detects analytic unit circuit, microcontroller system circuit, wireless transmission received communication modular circuit, fiber optic data communication modular circuit, back work power circuit, reserve battery charging power source circuit, be connected with the receiver of bi-directional communication modules, small towns power supply station early warning computer (being connected with early warning display screen and audible alarm), the electrician of small towns power supply station mobile phone and wireless communication base station,
Wherein, microcontroller system circuit 113 is connected to read parameters of electric power with temperature signal collection circuit 102, earth leakage protective testing circuit 103, switching signal detection port circuit 107, electrical parameters detection element circuit 110, harmonic wave detection analytic unit circuit 109 respectively;
Electrical parameters detection analysis circuit 110 is connected to read three-phase voltage signal with voltage signal acquisition circuit 105; When three-phase voltage signal surpasses set point (420-450V), by single-chip microcomputer, automatically generate Chinese short message (as: occurring abnormal overvoltage), upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out abnormal voltage early warning.
Described electrical parameters detection analysis circuit 110 is connected to read three-phase current signal and three-phase imbalance current signal with described current signal Acquisition Circuit 106; When three-phase current or three-phase imbalance current signal surpass set point (Bu balance Du≤50%), by single-chip microcomputer, automatically generate Chinese short message (as: phenomenon of the failure: three-phase load is extremely uneven.Method for removing: observe the power consumption of designation data or the every phase line of foundation of three phase ammeter, carry out load adjustment, make it three-phase load and tend to balance ".Upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out three-phase current overcurrent or the early warning of three-phase imbalance electric current.
Described harmonic wave detects analytic unit circuit 109 and is electrically connected to obtain harmonic analysis signal with described harmonic signal Acquisition Circuit 104, completes detection and the analysis of harmonic content; When three-phase current or three-phase imbalance current signal surpass set point (Bu balance Du≤50%), by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out three-phase current overcurrent or the early warning of three-phase imbalance electric current.
Described microcontroller system circuit 113 is connected with described temperature signal collection circuit transducer 102, and temperature signal collection circuit transducer 102 one end are connected in distribution system transformer shell or conservator, and the other end connects the input of microcontroller system circuit 113.When transformer temperature surpasses set temperature value (80-85 ℃), by single-chip microcomputer, automatically generate Chinese short message (as: phenomenon of the failure: transformer excess temperature.Method for removing: observe whether oil starvation of transformer oil level; Observe whether excess load of ammeter.Increased transformer oil to oil level line, or adjusted cutoff load) upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out transformer temperature rise early warning.
Described microcontroller system circuit 113, is connected with lightning arrester leakage detecting sensor circuit 108, lightning arrester leakage detecting sensor 108, and the other end connects microcontroller system circuit 113 inputs.When leakage current of an arrester surpasses set point (≤20mA) time, by single-chip microcomputer, automatically generate Chinese short message, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out leakage current of an arrester early warning.
Reserve battery charging power source circuit 112 comprises reserve battery, and it is connected with voltage stabilizing output+5V end with described working power rectification circuit 111; Can, when mains side occurs to have a power failure or cuts off the electricity supply because of fault execution, guarantee the normally operation in 24 hours of whole device.
Both-way communication receiver is communicated by letter with small towns power supply station early warning computer, the electrician of small towns power supply station mobile phone wireless respectively by wireless network communication base station.Both-way communication receiver adopts mobile module; Optical fiber communication modules 117 is the modules that adopt the opto-electronic conversion of fiber-optic signal transmission technology;
Described reserve battery charging power source circuit comprises the charge protector of reserve battery and reserve battery.Working power rectification circuit 111 and reserve battery charging power source circuit 112, for this terminal provides power supply; Described reserve battery charging power source circuit 112 comprises reserve battery, and it is connected with voltage stabilizing output+5V end with described working power rectification circuit 111; Can, when mains side occurs to have a power failure or cuts off the electricity supply because of fault execution, guarantee the normally operation in 24 hours of whole device.
Claims (6)
1. a controller switching equipment operating mode on-line monitoring early warning system, power distribution station for Yi Ge power supply station and jurisdiction thereof, power supply station's configuration early warning computer, and set up wireless communication base station, it is characterized in that: each distribution transformer is equipped with a controller switching equipment and detects Forewarning Terminal, described controller switching equipment detects Forewarning Terminal and is provided with wireless transmission received communication module, and described controller switching equipment detects Forewarning Terminal and is connected with wireless communication base station radio by described wireless transmission received communication module; Described power supply station early warning computer is connected with wireless communication base station by a receiver with bi-directional communication modules; By described power supply station early warning computer, controller switching equipment detection Forewarning Terminal and described wireless communication base station, form controller switching equipment operating mode on-line monitoring early warning system.
2. controller switching equipment operating mode on-line monitoring early warning system according to claim 1, it is characterized in that: also comprise mobile terminal, each electrician of power supply station or shift electrician are equipped with a mobile terminal with bidirectional wireless communication function, and described mobile terminal is by wireless communication base station connecting system; Described power supply station early warning computer is connected with early warning display screen and warning device, and by thering is receiver and wireless communication base station and each controller switching equipment detection Forewarning Terminal and the communication of mobile terminal two-way interactive of bi-directional communication modules.
3. controller switching equipment operating mode on-line monitoring early warning system according to claim 1 and 2, is characterized in that: described controller switching equipment detects Forewarning Terminal and includes transformer temperature signal transducer, leakaging signal detecting circuit, harmonic signal Acquisition Circuit, voltage signal acquisition circuit, current signal Acquisition Circuit, switch condition detection circuit, lightning arrester leakage detecting sensor and microcontroller system circuit;
Described transformer temperature signal transducer, leakaging signal detecting circuit, switch condition detection circuit, lightning arrester leakage detecting sensor output signal access respectively described microcontroller system circuit;
Described harmonic signal Acquisition Circuit detects analytic unit circuit by harmonic wave and accesses described microcontroller system circuit;
Described voltage signal acquisition circuit, current signal Acquisition Circuit access described microcontroller system circuit by electrical parameters detection analytic unit circuit;
The output of described microcontroller system circuit is connected with output control terminal mouth circuit, and microcontroller system circuit is controlled 10kV disconnect or 400V circuit breaker or the instruction of A.C. contactor break-make by described output control terminal mouth circuit output; Microcontroller system circuit connects wireless transmission received communication module by PORT COM.
4. controller switching equipment operating mode on-line monitoring early warning system according to claim 3, it is characterized in that: be connected with fiber optic data communication module with described microcontroller system circuit, described microcontroller system circuit is realized and the communicating by letter of ancillary equipment by described fiber optic data communication module; Described controller switching equipment detects Forewarning Terminal and also comprises back work power circuit; Back work power circuit is used for AC power through three transformer pressure-reducings, rectification, for this terminal provides DC voltage-stabilizing working power.
5. controller switching equipment operating mode on-line monitoring early warning system according to claim 3, it is characterized in that: transformer temperature signal transducer is arranged in distribution system transformer shell or conservator, temperature signal transducer output connects microcontroller system circuit input;
Leakaging signal detecting circuit input connects earth detector zero sequence current mutual inductor, and output connects the input of microcontroller system circuit;
Lightning arrester leakage detecting sensor one end is connected in earth detector zero sequence current mutual inductor, and the other end connects microcontroller system circuit input.
6. controller switching equipment operating mode on-line monitoring early warning system according to claim 3, is characterized in that: described harmonic signal Acquisition Circuit output harmonic wave signal after instrument transformer coupling, electric resistance partial pressure, capacitor filtering; Described harmonic wave detects analytic unit circuit for the harmonic signal sampling is carried out accessing microcontroller system circuit after dividing potential drop, shaping; Described electrical parameters detection analytic unit circuit adopts A/D modular converter that the voltage signal sampling, current signal, three-phase imbalance current signal are processed, and then accesses microcontroller system circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607399.0U CN203504294U (en) | 2013-09-30 | 2013-09-30 | Online monitoring early-warning system of operating conditions of power distribution equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320607399.0U CN203504294U (en) | 2013-09-30 | 2013-09-30 | Online monitoring early-warning system of operating conditions of power distribution equipment |
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| CN203504294U true CN203504294U (en) | 2014-03-26 |
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| CN201320607399.0U Expired - Fee Related CN203504294U (en) | 2013-09-30 | 2013-09-30 | Online monitoring early-warning system of operating conditions of power distribution equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457358A (en) * | 2013-09-30 | 2013-12-18 | 河南开启电力实业有限公司 | Power distribution equipment working condition on-line monitoring and early-warning system |
| CN105974224A (en) * | 2016-04-27 | 2016-09-28 | 国家电网公司 | On-line monitoring system of intelligent substation 750kV GIS disconnecting link mechanism box heater |
-
2013
- 2013-09-30 CN CN201320607399.0U patent/CN203504294U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457358A (en) * | 2013-09-30 | 2013-12-18 | 河南开启电力实业有限公司 | Power distribution equipment working condition on-line monitoring and early-warning system |
| CN103457358B (en) * | 2013-09-30 | 2016-07-06 | 河南开启电力实业有限公司 | Controller switching equipment operating mode on-line monitoring early warning system |
| CN105974224A (en) * | 2016-04-27 | 2016-09-28 | 国家电网公司 | On-line monitoring system of intelligent substation 750kV GIS disconnecting link mechanism box heater |
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Granted publication date: 20140326 Termination date: 20160930 |