CN201742167U - Intelligent monitoring terminal of power distribution system - Google Patents

Intelligent monitoring terminal of power distribution system Download PDF

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Publication number
CN201742167U
CN201742167U CN2010202574991U CN201020257499U CN201742167U CN 201742167 U CN201742167 U CN 201742167U CN 2010202574991 U CN2010202574991 U CN 2010202574991U CN 201020257499 U CN201020257499 U CN 201020257499U CN 201742167 U CN201742167 U CN 201742167U
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China
Prior art keywords
circuit
signal
signal acquisition
detection
harmonic
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Expired - Fee Related
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CN2010202574991U
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Chinese (zh)
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陈世忠
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ZHUMADIAN LONGJIE ELECTRIC CO Ltd
HENAN LONGJIE ELECTRIC CO Ltd
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ZHUMADIAN LONGJIE ELECTRIC CO Ltd
HENAN LONGJIE ELECTRIC CO Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/126Systems 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 provides an intelligent monitoring terminal of a power distribution system, which comprises a microcontroller system circuit, a temperature signal acquisition circuit, a leakage protection detection circuit, a switch signal detection port circuit, an integrated electrical parameter detection unit circuit, a harmonic detection and analysis unit circuit, an output control signal port circuit, a data communication interface circuit, a transmitting and receiving communication module circuit, a voltage signal acquisition circuit, a current signal acquisition circuit, a harmonic signal acquisition circuit, an auxiliary working power supply circuit, a spare battery charging power supply circuit, a computer of a power substation, a mobile phone of a person in charge of power control and a mobile communication base station. The temperature signal acquisition circuit, the leakage protection detection circuit, the switch signal detection port circuit, the integrated electrical parameter detection unit circuit, the harmonic detection and analysis unit circuit, the output control signal port circuit, the data communication interface circuit and the transmitting and receiving communication module circuit are respectively connected with the microcontroller system circuit, the voltage signal acquisition circuit and the current signal acquisition circuit are respectively connected with the integrated electrical parameter detection unit circuit, the harmonic signal acquisition circuit is connected with the harmonic detection and analysis unit circuit, the auxiliary working power supply circuit and the spare battery charging power supply circuit are used for supplying power to the terminal, and the computer of the power substation is connected with a two-way communication module. The utility model has the advantages of economical, practical and convenient use, ideal operating properties and high suitability for national development.

Description

Intelligent monitoring terminal of electric distribution system
Technical field
The utility model relates to a kind of intelligence monitoring and controlling device that is used for distribution system, specifically, relates to a kind of intelligent monitoring terminal of electric distribution system.
Background technology
Along with developing rapidly of power industry, the proposition of the new problem of intelligent electrical network, and the further research of distribution system automation control technology certainly will be quickened the process that distribution system automation is controlled; At present, the research of the power distribution automation control technology of electric power system is at the early-stage, but because actuator and data channel infusion of financial resources demand are big, so fail to be generalizable always comprehensively; The intellectuality of distribution system, automatically-monitored, promptly at distribution transformer, 10KV on-load switch, block switch and the controller switching equipment of 10KV circuit and 10000/400V, it is lower in the cost of these end-equipments own to hold concurrently, and then the supporting intelligent monitoring device of corresponding requirements has adaptable designing technique economy especially.
And for realizing that intelligent distribution system is automatically-monitored, electric power system is realized that Intellectualized monitoring is significant, especially under the situation of current domestic power supply supply of electric power peak period deficiency, need intelligent management of power supply and power utilization especially, to the direct distribution load of terminal temperature difference, and can carry out long-haul telemetry, remote signalling, remote control, reach the purpose of auto-control load; Distribution system intellectuality, automated control technology, to play very big improvement to the safe operation of electric power system controller switching equipment, at present at the distribution transformer, 10KV on-load switch, the block switch that move, owing to can not monitor in real time, basically be out of order, overhaul by user notification; Such operation of power networks state will certainly cause power supply quality low, device damage rate height.If can popularize and adapt to the transformation needs of distribution system intellectuality, automation in an all-round way, can play positive impetus the distribution system technological progress.
In order to solve above existing problem, people are seeking a kind of desirable technical solution that more is tending towards always.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, thus provide a kind of economical and practical, easy to use, operation characteristic is desirable, be suitable for the intelligent monitoring terminal of electric distribution system of national conditions development.
The purpose of this utility model is to realize by following technical scheme: a kind of intelligent monitoring terminal of electric distribution system includes temperature signal collection circuit, the earth leakage protective testing circuit, the voltage signal acquisition circuit, the current signal Acquisition Circuit, switching signal detection port circuit, output control signal port circuit, integrated electrical parameters detection element circuit, the harmonic signal Acquisition Circuit, harmonic wave check and analysis element circuit, microcontroller system circuit, emission received communication modular circuit, the data communication interface circuit, the back work power circuit, reserve battery charge power supply circuit, be connected with power supply station's computer of bi-directional communication modules, power management staff's mobile phone and mobile communication base station;
Wherein, described microcontroller system circuit is connected to read parameters of electric power with described temperature signal collection circuit, described earth leakage protective testing circuit, described switching signal detection port circuit, described integrated electrical parameters detection element circuit, described harmonic wave check and analysis element circuit respectively;
Described microcontroller system circuit is connected with described output control signal port circuit, and described output control signal port circuit is the output port that microcontroller system circuit sends control 10KV disconnect or 400V circuit breaker or the instruction of A.C. contactor break-make;
Described integrated electrical parameters detection element circuit is connected to read three-phase voltage signal with described voltage signal acquisition circuit; Described integrated electrical parameters detection element circuit is connected with described current signal Acquisition Circuit to read three-phase current signal and three-phase imbalance current signal; Described harmonic wave check and analysis element circuit is electrically connected to obtain the harmonic analysis signal with described harmonic signal Acquisition Circuit;
Described microcontroller system circuit and described data communication interface circuit are electrically connected to finish and the communicating by letter of ancillary equipment; Described emission received communication modular circuit is connected with described microcontroller system circuit and is used for launching and receiving information;
Described back work power circuit and described reserve battery charge power supply circuit provide power supply for this terminal;
Described emission received communication modular circuit is communicated by letter with the bi-directional communication modules of described power supply station computer, described power management staff's mobile phone wireless respectively by described mobile communication base station.
Based on above-mentioned, described temperature signal collection circuit is the digital temperature sensor that is used for distribution system transformer temperature signal collection; Described earth leakage protective testing circuit is the total earth leakage protective device that is used for the distribution system detection of electrical leakage.
Based on above-mentioned, described voltage signal acquisition circuit is the circuit with A, B, C three-phase alternating current output voltage signal after the resistance step-down; Described current signal Acquisition Circuit is the circuit with A, B, C three-phase current output current signal behind current transformer, load resistance.
Based on above-mentioned, described switching signal detection port circuit is the on off state detecting sensor that is used for 10KV disconnect or 400V circuit breaker or A.C. contactor.
Based on above-mentioned, described harmonic signal Acquisition Circuit is the circuit of output harmonic wave signal behind instrument transformer coupling, electric resistance partial pressure, capacitor filtering; Described harmonic wave check and analysis element circuit is the harmonic wave check and analysis integrated chip that the harmonic signal that is used for sampling carries out dividing potential drop, shaping.
Based on above-mentioned, described integrated electrical parameters detection element circuit is the electric parameter measurement integrated chip that the voltage signal, current signal, the three-phase imbalance current signal that are used for sampling analyzed, calculated.
Based on above-mentioned, described emission received communication modular circuit is an emission received communication chip.
Based on above-mentioned, described data communication interface circuit is a RS-485 serial data communication interface circuit.
Based on above-mentioned, described back work power circuit is to be used for the DC voltage-stabilizing working power of AC power through three transformer step-downs, rectification.
Based on above-mentioned, described reserve battery charge power supply circuit comprises the charge protector of reserve battery and reserve battery.
The utility model has substantive distinguishing features and progress with respect to prior art, specifically, this intelligent monitoring terminal of electric distribution system can be controlled by comparatively economic, desirable realization distribution system automation, its designing technique has the high characteristics of economy price ratio, realize distribution system intellectuality, automation control for developing country, will play positive facilitation;
This intelligent monitoring terminal of electric distribution system utilizes computer technology, single-chip microcomputer detection, control technology and wireless mobile telecommunication technology, thus a kind of digitlization, intelligent monitoring device that is used for Long-distance Control protection, real-time status and the Data Detection function of distribution transformer, 10KV on-load switch, block switch of exploitation; It combines with mobile communication network, computer software and power management staff's mobile phone; can constitute automatic protection, remote measurement, remote control, the remote signalling of distribution transformer, 10KV on-load switch, block switch and low-voltage circuit breaker; and form the distribution safe operation centralized monitoring system of electric power system thus; realize the terminal temperature difference load monitoring, and can realize the distribution system automation management by remote measurement, remote control.
Description of drawings
Fig. 1 is an operation principle schematic diagram of the present utility model;
Fig. 2 is an application schematic diagram of the present utility model;
Fig. 3 is a voltage signal acquisition circuit diagram described in the utility model;
Fig. 4 is a current signal Acquisition Circuit schematic diagram described in the utility model;
Fig. 5 is a harmonic signal Acquisition Circuit schematic diagram described in the utility model;
Fig. 6 is an integrated electrical parameters detection element circuit schematic diagram described in the utility model;
Fig. 7 is a microcontroller system circuit schematic diagram described in the utility model;
Fig. 8 is an emission received communication modular circuit schematic diagram described in the utility model;
Fig. 9 is an electric parameter measurement integrated chip circuit diagram described in the utility model;
Figure 10 is an output control signal port circuit schematic diagram described in the utility model;
Figure 11 is a data communication interface circuit diagram described in the utility model;
Figure 12 is a back work power circuit schematic diagram described in the utility model;
Figure 13 is a reserve battery charge power supply circuit diagram described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
As shown in Figure 1, a kind of intelligent monitoring terminal of electric distribution system includes temperature signal collection circuit, the earth leakage protective testing circuit, the voltage signal acquisition circuit, the current signal Acquisition Circuit, switching signal detection port circuit, output control signal port circuit, integrated electrical parameters detection element circuit, the harmonic signal Acquisition Circuit, harmonic wave check and analysis element circuit, microcontroller system circuit, emission received communication modular circuit, the data communication interface circuit, the back work power circuit, reserve battery charge power supply circuit, be connected with power supply station's computer of bi-directional communication modules, power management staff's mobile phone and mobile communication base station;
Wherein, described microcontroller system circuit is connected to read parameters of electric power with described temperature signal collection circuit, described earth leakage protective testing circuit, described switching signal detection port circuit, described integrated electrical parameters detection element circuit, described harmonic wave check and analysis element circuit respectively;
Described microcontroller system circuit is connected with described output control signal port circuit to finish abnormal alarm and output control, described output control signal port circuit is the output port that microcontroller system circuit sends control 10KV disconnect or 400V circuit breaker or the instruction of A.C. contactor break-make, promptly generate Chinese short message automatically and be uploaded to power supply station's computer or power management staff's mobile phone, inform failure cause and method for removing by microcontroller system circuit;
Described microcontroller system circuit is connected the affirmation to finish the switch branch, to close state with described switching signal detection port circuit, so that send corresponding execution command by output control signal port circuit;
Described earth leakage protective testing circuit is electrically connected with microcontroller system circuit, to finish the tripping alarm that detects earth leakage protective device; Described earth leakage protective testing circuit is the total earth leakage protective device that is used for the distribution system detection of electrical leakage;
Described integrated electrical parameters detection element circuit is connected to read three-phase voltage signal with described voltage signal acquisition circuit; Described integrated electrical parameters detection element circuit is connected with described current signal Acquisition Circuit to read three-phase current signal and three-phase imbalance current signal;
Described harmonic wave check and analysis element circuit is electrically connected to obtain the harmonic analysis signal with described harmonic signal Acquisition Circuit, finishes the detection and the analysis of harmonic content;
Described microcontroller system circuit and described data communication interface circuit are electrically connected to finish and the communicating by letter of ancillary equipment; Described emission received communication modular circuit is connected with described microcontroller system circuit and is used for launching and receiving information; Described back work power circuit and described reserve battery charge power supply circuit provide power supply for this terminal;
Described emission received communication modular circuit is communicated by letter with the bi-directional communication modules of described power supply station computer, described power management staff's mobile phone wireless respectively by described mobile communication base station.
Described temperature signal collection circuit is the digital temperature sensor that is used for distribution system transformer temperature signal collection; Described temperature signal collection circuit adopts digital temperature sensor, and directly reading temperature data can be used for the transformer temperature rise ratio and detects; Described temperature signal collection circuit head end is connected in the transformer of distribution system, and tail end is connected in microcontroller system circuit.
As shown in Figure 3, described voltage signal acquisition circuit is the circuit with A, B, C three-phase alternating current output voltage signal after the resistance step-down; Described voltage signal acquisition circuit head end is connected in A phase 220V, 50Hz alternating current, and then through the resistance step-down, output is fit to the voltage signal V2P/V2N that electric energy chip is measured, and is identical, takes out B phase, C phase voltage signal V4P/V4N, V6P/V6N, connected; Its tail end is connected in described integrated electrical parameters detection element circuit input; Described voltage signal acquisition circuit be A, B, C three-phase 220V, 50Hz alternating current through the resistance step-down, output is fit to the voltage signal that electric energy chip is measured; Voltage measurement signal V1P-V6P inserts electric parameter measurement integrated chip U1, is calculated overvoltage, under voltage electrical quantity and is outputed to the teletransmission unit by Single-chip Controlling.
As shown in Figure 4, described current signal Acquisition Circuit is the circuit with A, B, C three-phase current output current signal behind current transformer, load resistance; Described current signal Acquisition Circuit head end is connected in the A phase current and is fit to the current signal V1P/V1N that electric energy chip is measured through current transformer and load resistance output, and is identical, takes out B phase, C phase current signal V3P/V3N, V5P/V5N, connected; Its tail end is connected in described integrated electrical parameters detection element circuit input; Described current signal Acquisition Circuit is that A, B, C three-phase current are fit to the current signal that electric energy chip is measured through current transformer and load resistance output; Current measurement signal V1N-V6N inserts electric parameter measurement chip U1 respectively, is controlled electrical quantitys such as calculating active energy and is outputed to the teletransmission unit by Single Chip Microcomputer (SCM) system, and electrical energy pulse is isolated output by light idol N1, N2.
Described switching signal detection port circuit is the on off state detecting sensor that is used for 10KV disconnect or 400V circuit breaker or A.C. contactor; Described switching signal detection port circuit one end is connected in microcontroller system circuit and reads the contact state to judge whether to carry out divide-shut brake; Described switching signal detection port circuit can detect the connection disjunction state of 10KV circuit breaker or 400V/220V circuit breaker or A.C. contactor switchgear, by Single Chip Microcomputer (SCM) system control computing.
As shown in Figure 5, described harmonic signal Acquisition Circuit is the circuit of output harmonic wave signal behind the coupling of voltage and current instrument transformer, electric resistance partial pressure, capacitor filtering; Described harmonic wave check and analysis element circuit is the harmonic wave check and analysis integrated chip that the harmonic signal that is used for sampling carries out dividing potential drop, shaping; Described harmonic wave check and analysis element circuit is electrically connected with single chip circuit, with detection and the analysis of finishing harmonic content, sends corresponding instruction or warning by single chip circuit control output control signal port circuit.
As Fig. 6 and shown in Figure 9, described integrated electrical parameters detection element circuit is the electric parameter measurement integrated chip that the voltage signal, current signal, the three-phase imbalance current signal that are used for sampling analyzed, calculated; Insert single-chip microcomputer by electric parameter measurement integrated chip computing gained electrical quantity, output to the teletransmission unit by Single-chip Controlling; Electrical energy pulse is isolated output by the light idol.
As shown in Figure 7, described microcontroller system circuit is to be the mechanism of technological core with the Single Chip Microcomputer (SCM) system, and it is connected with integrated electrical parameters detection element circuit chip, the control computation of electrical; It connects with emission received communication modular circuit, in order to the work of control transmitting and receiving module; It connects with output control signal port circuit, connects disjunction processing instruction etc. in order to finish switching devices; Simultaneously, it is connected with the data communication interface circuit, carries out transfer of data, and electrical quantity is sent into the teletransmission unit.
As shown in Figure 8, described emission received communication modular circuit is a communications transmit receiver module chip, and itself and Single Chip Microcomputer (SCM) system two-way communication are sent alarm signal or parameters of electric power with short message mode, and being used to receive the work note, its course of work is controlled by Single Chip Microcomputer (SCM) system; Described emission received communication modular circuit is an emission received communication chip.
As shown in figure 10, described output control signal port circuit one end is connected in output and is controlled to be four tunnel relay tip, the other end is connected in microcontroller system circuit, is used to control 10KV circuit breaker and 400V/220V circuit breaker or A.C. contactor switchgear according to its attracting state of control is set; Described output control signal port circuit is by single-chip microcomputer control being set whether it reports to the police or switching devices is connected disjunction and handled according to operation sequence.
As shown in figure 11, described data communication interface circuit is that one two unit connects to carry out the data transmission by two 485 communication units; Described data communication interface circuit is a kind of RS-485 serial data communications busses, require communication distance be tens meters on during km, can extensively adopt the RS-485 serial bus standard, can save many holding wires when RS-485 is used for multi-point interconnection; Described data communication interface circuit is a RS-485 serial data communication interface circuit.
As shown in figure 12, described back work power circuit is to be used for the DC voltage-stabilizing working power of AC power through three transformer step-downs, rectification; Described back work power circuit is an auxiliary DC voltage-stabilizing working power, and it is exported AC power through 3 power transformer step-down rectifier conversion, supplies with the required power supply of each several part; Because this back work power circuit adopts 3 power transformer step-down rectifiers, when the mains side phase shortage takes place when, can not disintegrate working power, can guarantee that whole device normally moves, also, can read each phase voltage to judge power supply state by Single Chip Microcomputer (SCM) system because this back work power circuit output end is provided with the test point of three-phase voltage.
As shown in figure 13, described reserve battery charge power supply circuit comprises reserve battery and reserve battery charge protector, and it is connected with described back work power circuit voltage stabilizing output+5V end; It can prevent reserve battery overvoltage, overcurrent charging, can or hinder for some reason in mains side generation power failure to carry out when cutting off the electricity supply, and guarantees the normally operation in 24 hours of whole device.
As depicted in figs. 1 and 2, after distribution system puts into operation, under the control of described microcontroller system circuit, described integrated electrical parameters detection element circuit in real time, constantly detect on-the-spot operating transformer, 10KV on-load switch, block switch and every parameters of electric power, and constantly read the detecting unit data, carry out judgment processing, as, overload, overvoltage, under-voltage, electric weight etc.;
As the case may be, generate corresponding Chinese short message, described Chinese short message is sent to power supply station's computer or power management staff's mobile phone by described emission received communication modular circuit by described microcontroller system circuit; For the detection of switching value, directly detect by the described state-detection port circuit of single-chip microcomputer; Temperature signal collection adopts digital temperature sensor, directly reading temperature data; After getting rid of abnormal conditions, can send by power management staff's mobile phone or power supply station's computer starting.
Described distribution system is 10KV distribution line and disconnect and distribution transformer and 400V distribution line and circuit breaker or A.C. contactor, also comprises high-low pressure metering device and control appliance etc.; Described computer bidirectional communication module be a kind ofly be used to connect computer, the communication module of reporting to the police or the parameters of electric power of instruction of disconnect break-make or needs sends and receives with short message mode; Described power supply station computer is a common computer, i.e. terminal computer; Described power management staff's mobile phone is the regular handset that distribution system electrician management personnel are used for work; Described mobile communication base station can provide the mobile network to serve for described power management staff's mobile phone.
For improper state operation, system also can do simple protective or upload phenomenon of the failure and troubleshooting methodology, such as: the transformer excess temperature.Can generate Chinese short message automatically by single-chip microcomputer uploads and is " 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 the oil level line, or adjusted the cutoff load ".And for example: the three-phase load imbalance.Can by single-chip microcomputer generate automatically Chinese short message upload into: " phenomenon of the failure: three-phase load is extremely uneven.Method for removing: observe the power consumption of the designation data or the every phase line of foundation of three-phase current table, the adjustment of loading makes it three-phase load and tends to balance " or the like.
For Remote, remote measurement process, be that described emission received communication modular circuit receives in real time the control note instruction of sending from power supply station's computer or power management staff's mobile phone, as, check meter, control outage, control and send electricity etc., after receiving note by described emission received communication modular circuit, described microcontroller system circuit is assert by analysis, and make corresponding actions, as, on-the-spot real time data is sent back to, or on-the-spot high-low pressure circuit breaker of start and stop and A.C. contactor.
This intelligent monitoring terminal of electric distribution system can be controlled by comparatively economic, desirable realization distribution system automation, and it will play positive facilitation for developing country's realization distribution system automation control.
Should be noted that at last: above embodiment only is not intended to limit in order to the explanation the technical solution of the utility model; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.

Claims (10)

1. intelligent monitoring terminal of electric distribution system, it is characterized in that: this terminal includes temperature signal collection circuit, the earth leakage protective testing circuit, the voltage signal acquisition circuit, the current signal Acquisition Circuit, switching signal detection port circuit, output control signal port circuit, integrated electrical parameters detection element circuit, the harmonic signal Acquisition Circuit, harmonic wave check and analysis element circuit, microcontroller system circuit, emission received communication modular circuit, the data communication interface circuit, the back work power circuit, reserve battery charge power supply circuit, be connected with power supply station's computer of bi-directional communication modules, power management staff's mobile phone and mobile communication base station;
Wherein, described microcontroller system circuit is connected to read parameters of electric power with described temperature signal collection circuit, described earth leakage protective testing circuit, described switching signal detection port circuit, described integrated electrical parameters detection element circuit, described harmonic wave check and analysis element circuit respectively;
Described microcontroller system circuit is connected with described output control signal port circuit, and described output control signal port circuit is the output port that microcontroller system circuit sends control 10KV disconnect or 400V circuit breaker or the instruction of A.C. contactor break-make;
Described integrated electrical parameters detection element circuit is connected to read three-phase voltage signal with described voltage signal acquisition circuit; Described integrated electrical parameters detection element circuit is connected with described current signal Acquisition Circuit to read three-phase current signal and three-phase imbalance current signal; Described harmonic wave check and analysis element circuit is electrically connected to obtain the harmonic analysis signal with described harmonic signal Acquisition Circuit;
Described microcontroller system circuit and described data communication interface circuit are electrically connected to finish and the communicating by letter of ancillary equipment; Described emission received communication modular circuit is connected with described microcontroller system circuit and is used for launching and receiving information; Described back work power circuit and described reserve battery charge power supply circuit provide power supply for this terminal;
Described emission received communication modular circuit is communicated by letter with the bi-directional communication modules of described power supply station computer, described power management staff's mobile phone wireless respectively by described mobile communication base station.
2. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described temperature signal collection circuit is the digital temperature sensor that is used for distribution system transformer temperature signal collection; Described earth leakage protective testing circuit is the total earth leakage protective device that is used for the distribution system detection of electrical leakage.
3. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described voltage signal acquisition circuit is the circuit with A, B, C three-phase alternating current output voltage signal after the resistance step-down; Described current signal Acquisition Circuit is the circuit with A, B, C three-phase current output current signal behind current transformer, load resistance.
4. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described switching signal detection port circuit is the on off state detecting sensor that is used for 10KV disconnect or 400V circuit breaker or A.C. contactor.
5. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described harmonic signal Acquisition Circuit is the circuit of output harmonic wave signal behind instrument transformer coupling, electric resistance partial pressure, capacitor filtering; Described harmonic wave check and analysis element circuit is the harmonic wave check and analysis integrated chip that the harmonic signal that is used for sampling carries out dividing potential drop, shaping.
6. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described integrated electrical parameters detection element circuit is the electric parameter measurement integrated chip that the voltage signal, current signal, the three-phase imbalance current signal that are used for sampling analyzed, calculated.
7. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described emission received communication modular circuit is an emission received communication chip.
8. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described data communication interface circuit is a RS-485 serial data communication interface circuit.
9. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described back work power circuit is to be used for the DC voltage-stabilizing working power of AC power through three transformer step-downs, rectification.
10. intelligent monitoring terminal of electric distribution system according to claim 1 is characterized in that: described reserve battery charge power supply circuit comprises the charge protector of reserve battery and reserve battery.
CN2010202574991U 2010-07-14 2010-07-14 Intelligent monitoring terminal of power distribution system Expired - Fee Related CN201742167U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873010A (en) * 2010-07-14 2010-10-27 河南龙杰电气有限公司 Intelligent monitoring terminal of electric distribution system
CN102694418A (en) * 2012-03-29 2012-09-26 兰州海红技术股份有限公司 Alternating-current distribution intelligent monitoring system
CN103066693A (en) * 2011-10-19 2013-04-24 上海欣影电力科技发展有限公司 Intelligent terminal for power distribution network
CN103645664A (en) * 2013-12-20 2014-03-19 江苏锐天信息科技有限公司 R485 bus based power distribution control device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873010A (en) * 2010-07-14 2010-10-27 河南龙杰电气有限公司 Intelligent monitoring terminal of electric distribution system
CN103066693A (en) * 2011-10-19 2013-04-24 上海欣影电力科技发展有限公司 Intelligent terminal for power distribution network
CN102694418A (en) * 2012-03-29 2012-09-26 兰州海红技术股份有限公司 Alternating-current distribution intelligent monitoring system
CN102694418B (en) * 2012-03-29 2015-07-22 兰州海红技术股份有限公司 Alternating-current distribution intelligent monitoring system
CN103645664A (en) * 2013-12-20 2014-03-19 江苏锐天信息科技有限公司 R485 bus based power distribution control device

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