CN101800440B - System for monitoring distribution network state and method thereof - Google Patents

System for monitoring distribution network state and method thereof Download PDF

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Publication number
CN101800440B
CN101800440B CN2010101326359A CN201010132635A CN101800440B CN 101800440 B CN101800440 B CN 101800440B CN 2010101326359 A CN2010101326359 A CN 2010101326359A CN 201010132635 A CN201010132635 A CN 201010132635A CN 101800440 B CN101800440 B CN 101800440B
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monitoring
temperature
data center
infrared
circuit
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CN2010101326359A
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Chinese (zh)
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CN101800440A (en
Inventor
邓泽官
柳德伟
张蓬鹤
李敏
段守胜
卢元亮
周晓惠
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国网电力科学研究院武汉南瑞有限责任公司
国网电力科学研究院
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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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/7853
    • 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 invention provides a system for monitoring distribution network state. The system comprises a bureau distribution network equipment data center, a station distribution network equipment data center, an infrared point temperature monitoring unit, a switch electrical parameter monitoring unit, an environmental humiture monitoring unit, a thermal infrared image monitoring instrument and a distribution network state monitoring software platform, wherein the bureau distribution network equipment data center is connected with the station distribution network equipment data center in a mode of optical fiber communication, wireless communication or carrier communication; the station distribution network equipment data center is connected with the infrared point temperature monitoring unit, the switch electrical parameter monitoring unit, and the environmental humiture monitoring unit through a RS485 respectively; the station distribution network equipment data center is further connected with the thermal infrared image monitoring instrument through optical fibers; and the matched distribution network state monitoring software platform is arranged on host computers of the bureau distribution network equipment data center and the station distribution network equipment data center. As the data information of diversification measurement covers all state parameters of the distribution network equipment, the system for monitoring the distribution network state ensures that perfect and full monitoring is provided for equipment objects.

Description

System for monitoring distribution network state and monitoring method thereof
Technical field
The present invention relates to a kind of electric network state monitoring system and method, be specifically related to a kind of system for monitoring distribution network state and monitoring method thereof.
Background technology
Along with the need for electricity amount increases and the electricity supply and demand marketization, the user improves constantly the requirement of power supply reliability, the quality of power supply and good service, and power distribution network equipment is being brought into play important effect in realizing reliable power supply.
Number of devices is big, of a great variety in the power distribution network, and some equipment such as distribution transformer itself is just extremely expensive, and temperature, ambient temperature and humidity etc. are very important for the normal operation of these power distribution network equipment.Need to pass through: the working temperature of cable joint, high-low pressure cabinet, ring main unit turnover line, on-load switch, distribution transformer, on-pole switch to the physical parameter in the power distribution network; Electric parameter: the drop-out current of on/off switch coil current, vacuum switch etc.; Environment parameter: ambient temperature and humidity etc.; Comprise that also the Infrared Thermogram to main equipment in distribution transformer chamber, hyperbaric chamber, low-pressure chamber, the control room carries out real-time state monitoring etc.; Can in time the equipment operation operating mode be reflected; Make the staff in time find each equipment running status of power distribution network, thereby in time find fault and fix a breakdown.
At present domestic power distribution network on-line monitoring technique exists some shortcomings, does not have data-interface such as the equipment of each producer, fights separately, not architectonical; Telecommunication aspect shortcoming generally can only be in the monitoring of being correlated with on the spot, and inconvenient related personnel monitors; In addition, because the data between each producer are incompatible, therefore form the on-line monitoring system that each monitoring project is combined, quite difficulty just becomes.
In the prior art; Also relate to monitoring system for power distribution networks is carried out improved open source literature; For example the patent No. is the utility model patent " distribution network monitoring management system " of ZL200820004999.7; Involved a kind of distribution network monitoring management system; This system comprises a plurality of monitoring of electric power terminal, communication network, APN router, distribution monitor nets that are fitted with wireless communication terminal, and wherein said monitoring of electric power terminal is installed on each monitoring point respectively and is connected with cable or electric equipment, and said communication network is connected through the APN special line with said APN router; Said APN router is connected with said distribution monitor net, is provided with fire compartment wall between said APN router and the said distribution monitor net; Said distribution monitor net is fitted with distribution network monitoring management software.Yet the shortcoming that this utility model exists is: this supervisory control system function singleness, the technological means of employing is complicated, is unfavorable for applying.
And for example application number is 200610137725.0 patent of invention " wireless on-line monitoring system of electric distribution network cable connector running state and method "; Relate to a kind of wireless on-line monitoring system and method for electric distribution network cable connector running state; Said monitoring system; Comprise: one or more terminals harvester, be used under the control of controller, measure the operational factor of the electric distribution network cable connector under the running status; Wherein, the terminal harvester is supplied power through suspension electromagnetic induction formula communication power supply unit; One or more controllers are used to control one or more terminals harvester, obtain the operational factor of terminal harvester collection and operational factor is transferred to server; And server, be used to handle and analyze the operational factor of self-controller, confirm the running status of electric distribution network cable connector and the following running status of prediction electric distribution network cable connector.This invention is confirmed the operating state of electric distribution network cable connector through temperature under the on-line monitoring electric distribution network cable connector running state and electric current, to improve the fail safe and the reliability of power distribution network operation, the power transmission and distribution ability of excavating power equipment.The shortcoming that this invention exists is: this supervisory control system function singleness, only can monitor cable connector running state, and the technological means that adopts is still complicated, is unfavorable for applying.
Therefore, be necessary to design a kind of system for monitoring distribution network state and monitoring method thereof that can overcome above-mentioned shortcoming, to satisfy the monitoring needs of power distribution network equipment.
Summary of the invention
The purpose of this invention is to provide a kind of system for monitoring distribution network state and monitoring method thereof; The on-line monitoring project is combined; Data between projects are compatible; Can unify data are put into same database, analyze and manage, thereby realize multiple function and easy to operate with same software.
The technical scheme that the present invention adopted is: a kind of system for monitoring distribution network state; Comprise: office side's distribution net equipment data center, the side's of station distribution net equipment data center, infrared point temperature monitoring means, switch electric parameter monitoring means, ambient temperature and humidity monitoring means, infrared thermal imagery monitor and distribution status monitoring software platform; Office side distribution net equipment data center is connected with station side's distribution net equipment data center realization through optical fiber, wireless or carrier communication mode; The side of station distribution net equipment data center realizes being connected with infrared point temperature monitoring means, switch electric parameter monitoring means, ambient temperature monitoring means respectively through RS485; The side of station distribution net equipment data center also realizes being connected through optical fiber and infrared thermal imagery monitor; Be installed on the main frame of office side distribution net equipment data center and station side distribution net equipment data center with the distribution status monitoring software platform of system support, it is characterized in that:
Said switch electric parameter monitoring means comprises: current sensor, acceleration transducer, current/voltage-converted circuit, amplification, filter circuit, charge amplifier, resonance and demodulation device, switch MCU treatment circuit and switch external communication interface circuit; Current sensor links to each other with current/voltage-converted circuit, charge amplifier respectively with acceleration transducer; The current signal that is obtained by current sensor passes through current/voltage-converted circuit and amplification, filter circuit realization current/voltage-converted and filtering, is obtained the effective value of electric current again by switch MCU treatment circuit calculating mean value; Acceleration transducer obtains vibration information and converts vibration signal to charge signal; Convert voltage signal to through charge amplifier; Obtain fault-signal through the resonance and demodulation device again; Analyzed and handled by switch MCU treatment circuit again, the information of gained is sent to station side distribution net equipment data center by the switch external communication interface circuit;
Said ambient temperature and humidity monitoring means comprises: Temperature Humidity Sensor, operational amplifier, A/D gather change-over circuit, environment MCU treatment circuit, environment display module and environmental externality communication interface circuit; Temperature Humidity Sensor is connected with operational amplifier; A/D gathers change-over circuit and links to each other with environment MCU treatment circuit; The output of environment MCU treatment circuit is connected with environment display module and environmental externality communication interface circuit; By Temperature Humidity Sensor sampling temperature-humidity signal; Gather change-over circuit conversion and environment MCU processing circuit processes through operational amplifier, A/D, be sent to station side distribution net equipment data center by environment display module displays temperature and humidity information and through the environmental externality communication interface circuit.
The technique effect that brings thus is at least: this diversification data measured information contains all state parameters of electric distribution network electrical equipment, adopts multiple measurement means to combine, and guaranteeing provides the most perfect, the most comprehensively monitoring to device object; The distributed monitoring pattern makes each monitoring terminal independently accomplish the collection of relevant parameter type, and all monitoring means mutual group are built into a complete electric distribution network electrical equipment " monitoring net ", realizes the synchronous real-time monitoring to whole power distribution network equipment.
Aforesaid system for monitoring distribution network state; It is characterized in that: said infrared point temperature monitoring means comprises: optical system, infrared point temperature transducer, accurate operational amplifier, A/D sample conversion circuit, infrared MCU treatment circuit, external communication interface circuit, infrared display module; The infrared point temperature transducer is connected with A/D sample conversion circuit; Precisely operational amplifier links to each other with infrared MCU treatment circuit; Infrared point temperature sensor sample temperature signal is by infrared MCU processing circuit controls A/D sampling, through accurate operational amplifier; Be sent to station side distribution net equipment data center by the external communication interface circuit, and through infrared display module displays temperature information.
Aforesaid system for monitoring distribution network state is characterized in that: said infrared thermal imagery monitor comprises a thermal infrared imager.
Aforesaid system for monitoring distribution network state is characterized in that: said distribution status monitoring software platform comprises: infrared point temperature monitoring management sub-platform, infrared thermal imagery monitoring management sub-platform, switch electric parameter monitoring management sub-platform and ambient temperature and humidity monitoring management sub-platform.The technique effect that brings thus is at least: make this distribution status monitoring software platform can realize managing infrared point temperature monitoring, infrared thermal imagery monitoring, the monitoring of switch electric parameter and ambient temperature and humidity monitoring respectively.
The present invention also provides a kind of monitoring method that adopts aforesaid system for monitoring distribution network state; It is characterized in that: office side's distribution net equipment data center and station side distribution net equipment data center realize the on-line monitoring of temperature, thermal imagery and ambient temperature and humidity to device context through operating distribution status monitoring software platform, comprising:
(1) controls the initial time of thermometric and the cycle of sampling through infrared point temperature monitoring management sub-platform; Show a certain by the temperature information of thermometric equipment or parts real-time continuous; Demonstration is by the Current Temperatures of the equipment of thermometric or parts, provides early warning signal in real time to the temperature conditions of equipment, parts;
(2) through infrared thermal imagery monitoring management sub-platform; Mouse moves control point for measuring temperature and scope; Show current device video and infrared thermal imagery information simultaneously; Take preservation infrared thermal imagery and video information as data backup, manually set the high alarm setting operation of many grades of equipment or parts, realize off-limit alarm;
(3) pass through the drop-out current that switch electric parameter monitoring management sub-platform is measured vacuum switch; Carry out the electric residual life analysis and the assessment of switch; Drafting is closed, switching winding current characteristics curve carries out switching on and shutting down tool life appraisal, and the assessment result of difference display switch mechanical endurance and electric life;
(4) show current environmental temperature information and current environment humidity information through ambient temperature and humidity monitoring management sub-platform.
Aforesaid state of electric distribution network monitoring method is characterized in that: the workflow of said infrared point temperature monitoring means is following:
(1) the external communication interface circuit of infrared point temperature transducer is accepted the device address by the transmission of station side's distribution net equipment data center; The infrared MCU treatment circuit comparison device address that each infrared point temperature transducer is corresponding; If equate with the equipment of itself address; Then carry out temperature survey,, then do not operate if unequal;
(2) after infrared MCU treatment circuit is received thermometric instruction, carry out temperature acquisition, the temperature signal that collects is delivered to infrared MCU treatment circuit through A/D sample conversion circuit again and is carried out algorithm process through accurate operational amplifier, obtains temperature value;
(3) temperature value that calculates of infrared MCU treatment circuit shows at infrared display module, is sent to station side distribution net equipment data center through the external communication interface circuit again;
(4) the infrared point temperature transducer receives next device address and repeats said process, all accomplishes detection until all equipment.
Aforesaid state of electric distribution network monitoring method is characterized in that: the workflow of said switch electric parameter monitoring means is following:
(1) the external communication interface circuit of switch electric parameter monitoring means is accepted the device address by the transmission of station side's distribution net equipment data center; Each switch electric parameter monitoring means corresponding switch MCU treatment circuit comparison device address; If equate with the equipment of itself address; Then monitor,, then do not operate if unequal;
(2) after switch MCU treatment circuit is received the instruction of monitoring, carry out information gathering;
(3) effective value and the fault-signal value of information of the electric current that calculates of switch MCU treatment circuit are sent to station side distribution net equipment data center through the switch external communication interface circuit;
(4) switch electric parameter monitoring means receives next device address and repeats said process, all accomplishes detection until all equipment.
Aforesaid state of electric distribution network monitoring method is characterized in that: the workflow of said ambient temperature and humidity monitoring means is following:
(1) the environmental externality communication interface circuit of ambient temperature and humidity monitoring means is accepted the monitoring order by the transmission of station side's distribution net equipment data center;
(2) receive the instruction that ambient temperature and humidity measures after, carry out temperature, humidity collection;
(3) temperature, the humidity value that calculate of the environment MCU treatment circuit of ambient temperature and humidity monitoring means shows at the environment display module, is sent to station side distribution net equipment data center through the external communication interface circuit again.
The invention has the beneficial effects as follows: diversification data measured information of the present invention contains all state parameters of electric distribution network electrical equipment, adopts multiple measurement means to combine, and guaranteeing provides the most perfect, the most comprehensively monitoring to device object; The distributed monitoring pattern makes each monitoring terminal independently accomplish the collection of relevant parameter type, and all monitoring means mutual group are built into a complete electric distribution network electrical equipment " monitoring net ", realizes the synchronous real-time monitoring to whole power distribution network equipment.With the software platform of system support status information of equipment is analyzed and state estimation, out of order equipment is carried out the failure diagnosis location, and finally propose the maintenance suggestion of equipment.
Description of drawings
Fig. 1 is the overall system block diagram of system for monitoring distribution network state of the present invention.
Fig. 2 is the infrared point temperature detecting unit schematic diagram of system for monitoring distribution network state of the present invention.
Fig. 3 is the switch electric parameter monitoring means schematic diagram of system for monitoring distribution network state of the present invention.
Fig. 4 is the ambient temperature monitoring means schematic diagram of system for monitoring distribution network state of the present invention.
Fig. 5 is each monitoring means flow chart of system for monitoring distribution network state of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
As shown in Figure 1; The system for monitoring distribution network state that the embodiment of the invention provides; Comprise: office side's distribution net equipment data center, the side's of station distribution net equipment data center, infrared point temperature monitoring means, switch electric parameter monitoring means, ambient temperature and humidity monitoring means, infrared thermal imagery monitor and distribution status monitoring software platform; Office side distribution net equipment data center is connected with station side's distribution net equipment data center realization through optical fiber, wireless or carrier communication mode; The side of station distribution net equipment data center realizes being connected with infrared point temperature monitoring means, switch electric parameter monitoring means, ambient temperature monitoring means respectively through RS485; The side of station distribution net equipment data center also realizes being connected through optical fiber and infrared thermal imagery monitor, is installed on the main frame of office side distribution net equipment data center and station side distribution net equipment data center with the distribution status monitoring software platform of system support.
Above-mentioned infrared point temperature monitoring means comprises: optical system, infrared point temperature transducer, accurate operational amplifier, AD sample conversion circuit, infrared MCU treatment circuit, external communication interface circuit, infrared display module.The infrared point temperature transducer is connected with A/D sample conversion circuit, links to each other with infrared MCU treatment circuit through accurate operational amplifier.After infrared point temperature sensor sample temperature signal; By infrared MCU processing circuit controls A/D sample conversion circuit sampling; Through accurate operational amplifier, be sent to station side distribution net equipment data center by the external communication interface circuit, and through infrared display module displays temperature information.
Above-mentioned switch electric parameter monitoring means comprises: current sensor, acceleration transducer, current/voltage-converted circuit, amplification, filter circuit, charge amplifier, resonance and demodulation device, switch MCU treatment circuit and switch external communication interface circuit.Current sensor and acceleration transducer respectively with the current/voltage-converted circuit; Charge amplifier links to each other; Current signal by current sensor obtains is realized current/voltage-converted and filtering through current/voltage-converted and amplifilter, is obtained the effective value of electric current again by switch MCU treatment circuit calculating mean value; Acceleration transducer obtains vibration information and converts vibration signal to charge signal; Convert voltage signal to through charge amplifier; Obtain fault-signal through the resonance and demodulation device again; Analyzed and handled by switch MCU treatment circuit again, the information of gained is sent to station side distribution net equipment data center by the switch external communication interface circuit.
Above-mentioned ambient temperature and humidity monitoring means comprises: Temperature Humidity Sensor, and operational amplifier, A/D gathers change-over circuit, environment MCU treatment circuit, environment display module and environmental externality communication interface circuit.Temperature Humidity Sensor is connected with operational amplification circuit, links to each other with environment MCU treatment circuit after A/D gathers change-over circuit, and the output of environment MCU treatment circuit is connected with environment display module and environmental externality communication interface circuit.By Temperature Humidity Sensor sample temperature signal; Through operational amplifier; A/D gathers change-over circuit conversion and environment MCU processing circuit processes, is sent to station side distribution net equipment data center by environment display module displays temperature and humidity information and through the environmental externality communication interface circuit.
Above-mentioned infrared thermal imagery monitor comprises: a thermal infrared imager.
Above-mentioned distribution status monitoring software platform comprises: infrared point temperature monitoring management sub-platform, infrared thermal imagery monitoring management sub-platform, switch electric parameter monitoring management sub-platform and ambient temperature and humidity monitoring management sub-platform.
System work process is following:
Office side distribution net equipment data center and station side distribution net equipment data center realize the on-line monitoring of temperature, thermal imagery and ambient temperature and humidity to device context through operating distribution status monitoring software platform.
(1) controls the initial time of thermometric and the cycle of sampling through infrared point temperature monitoring management sub-platform; Show a certain by the temperature information of thermometric equipment or parts real-time continuous; Demonstration is by the Current Temperatures of the equipment of thermometric or parts, provides early warning signal in real time to the temperature conditions of equipment, parts.
(2) through infrared thermal imagery monitoring management sub-platform; Mouse moves control point for measuring temperature and scope; Show current device video and infrared thermal imagery information simultaneously; Take preservation infrared thermal imagery and video information as data backup, manually set the operations such as high alarm setting of many grades of equipment or parts, realize off-limit alarm.
(3) pass through the drop-out current that switch electric parameter monitoring management sub-platform is measured vacuum switch; Carry out the electric residual life analysis and the assessment of switch; Drafting is closed, switching winding current characteristics curve carries out switching on and shutting down tool life appraisal, and the assessment result of difference display switch mechanical endurance and electric life.
(4) show current environmental temperature information and current environment humidity information through ambient temperature and humidity monitoring management sub-platform.
The workflow of infrared point temperature monitoring means is following:
(1) the external communication interface circuit of infrared point temperature transducer is accepted the device address by the transmission of station side's distribution net equipment data center; The infrared MCU treatment circuit comparison device address that each infrared point temperature transducer is corresponding; If equate, then carry out temperature survey with the equipment of itself address; If unequal, then do not operate.
(2) after infrared MCU treatment circuit is received thermometric instruction, carry out temperature acquisition, the temperature signal that collects amplifies through accurate operational amplifier, delivers to infrared MCU treatment circuit through A/D sample conversion circuit again and carries out algorithm process, obtains temperature value.
(3) temperature value that calculates of infrared MCU treatment circuit shows at infrared display module, is sent to station side distribution net equipment data center through the external communication interface circuit again.
(4) the infrared point temperature transducer receives next device address and repeats said process, all accomplishes detection until all equipment.
The workflow of switch electric parameter monitoring means is following:
(1) the external communication interface circuit of switch electric parameter monitoring means is accepted the device address by the transmission of station side's distribution net equipment data center; Each switch electric parameter monitoring means corresponding switch MCU treatment circuit comparison device address; If equate, then monitor with the equipment of itself address; If unequal, then do not operate.
(2) after switch MCU treatment circuit is received the instruction of monitoring, carry out information gathering.
(3) value of information such as the effective value of the electric current that calculates of switch MCU treatment circuit and fault-signal is sent to station side distribution net equipment data center through the switch external communication interface circuit.
(4) switch electric parameter monitoring means receives next device address and repeats said process, all accomplishes detection until all equipment.
The workflow of ambient temperature and humidity monitoring means is following:
(1) the environmental externality communication interface circuit of ambient temperature and humidity monitoring means is accepted the monitoring order by the transmission of station side's distribution net equipment data center.
(2) receive the instruction that ambient temperature and humidity measures after, carry out temperature, humidity collection.
(3) temperature, the humidity value that calculate of the environment MCU treatment circuit of ambient temperature and humidity monitoring means shows at the environment display module, is sent to station side distribution net equipment data center through the external communication interface circuit again.
Diversification data measured information of the present invention contains all state parameters of electric distribution network electrical equipment, adopts multiple measurement means to combine, and guaranteeing provides the most perfect, the most comprehensively monitoring to device object; The distributed monitoring pattern makes each monitoring terminal independently accomplish the collection of relevant parameter type, and all monitoring means mutual group are built into a complete electric distribution network electrical equipment " monitoring net ", realizes the synchronous real-time monitoring to whole power distribution network equipment.With the software platform of system support status information of equipment is analyzed and state estimation, out of order equipment is carried out the failure diagnosis location, and finally propose the maintenance suggestion of equipment.

Claims (8)

1. system for monitoring distribution network state; Comprise: office side's distribution net equipment data center, the side's of station distribution net equipment data center, infrared point temperature monitoring means, switch electric parameter monitoring means, ambient temperature and humidity monitoring means, infrared thermal imagery monitor and distribution status monitoring software platform; Office side distribution net equipment data center is connected with station side's distribution net equipment data center realization through optical fiber, wireless or carrier communication mode; The side of station distribution net equipment data center realizes being connected with infrared point temperature monitoring means, switch electric parameter monitoring means, ambient temperature monitoring means respectively through RS485; The side of station distribution net equipment data center also realizes being connected through optical fiber and infrared thermal imagery monitor; Be installed on the main frame of office side distribution net equipment data center and station side distribution net equipment data center with the distribution status monitoring software platform of system support, it is characterized in that:
Said switch electric parameter monitoring means comprises: current sensor, acceleration transducer, current/voltage-converted circuit, amplification, filter circuit, charge amplifier, resonance and demodulation device, switch MCU treatment circuit and switch external communication interface circuit; Current sensor links to each other with current/voltage-converted circuit, charge amplifier respectively with acceleration transducer; The current signal that is obtained by current sensor passes through current/voltage-converted circuit and amplification, filter circuit realization current/voltage-converted and filtering, is obtained the effective value of electric current again by switch MCU treatment circuit calculating mean value; Acceleration transducer obtains vibration information and converts vibration signal to charge signal; Convert voltage signal to through charge amplifier; Obtain fault-signal through the resonance and demodulation device again; Analyzed and handled by switch MCU treatment circuit again, the information of gained is sent to station side distribution net equipment data center by the switch external communication interface circuit;
Said ambient temperature and humidity monitoring means comprises: Temperature Humidity Sensor, operational amplifier, A/D gather change-over circuit, environment MCU treatment circuit, environment display module and environmental externality communication interface circuit; Temperature Humidity Sensor is connected with operational amplifier; A/D gathers change-over circuit and links to each other with environment MCU treatment circuit; The output of environment MCU treatment circuit is connected with environment display module and environmental externality communication interface circuit; By Temperature Humidity Sensor sampling temperature-humidity signal; Gather change-over circuit conversion and environment MCU processing circuit processes through operational amplifier, A/D, be sent to station side distribution net equipment data center by environment display module displays temperature and humidity information and through the environmental externality communication interface circuit.
2. system for monitoring distribution network state according to claim 1; It is characterized in that: said infrared point temperature monitoring means comprises: optical system, infrared point temperature transducer, accurate operational amplifier, A/D sample conversion circuit, infrared MCU treatment circuit, external communication interface circuit, infrared display module; The infrared point temperature transducer is connected with A/D sample conversion circuit; Precisely operational amplifier links to each other with infrared MCU treatment circuit; Infrared point temperature sensor sample temperature signal is by infrared MCU processing circuit controls A/D sampling, through accurate operational amplifier; Be sent to station side distribution net equipment data center by the external communication interface circuit, and through infrared display module displays temperature information.
3. system for monitoring distribution network state according to claim 1 is characterized in that: said infrared thermal imagery monitor comprises a thermal infrared imager.
4. system for monitoring distribution network state according to claim 1 is characterized in that: said distribution status monitoring software platform comprises: infrared point temperature monitoring management sub-platform, infrared thermal imagery monitoring management sub-platform, switch electric parameter monitoring management sub-platform and ambient temperature and humidity monitoring management sub-platform.
5. monitoring method that adopts the described system for monitoring distribution network state of claim 1; It is characterized in that: office side's distribution net equipment data center and station side distribution net equipment data center realize the on-line monitoring of temperature, thermal imagery and ambient temperature and humidity to device context through operating distribution status monitoring software platform, comprising:
(1) controls the initial time of thermometric and the cycle of sampling through infrared point temperature monitoring management sub-platform; Show a certain by the temperature information of thermometric equipment or parts real-time continuous; Demonstration is by the Current Temperatures of the equipment of thermometric or parts, provides early warning signal in real time to the temperature conditions of equipment, parts;
(2) through infrared thermal imagery monitoring management sub-platform; Mouse moves control point for measuring temperature and scope; Show current device video and infrared thermal imagery information simultaneously; Take preservation infrared thermal imagery and video information as data backup, manually set the high alarm setting operation of many grades of equipment or parts, realize off-limit alarm;
(3) pass through the drop-out current that switch electric parameter monitoring management sub-platform is measured vacuum switch; Carry out the electric residual life analysis and the assessment of switch; Drafting is closed, switching winding current characteristics curve carries out switching on and shutting down tool life appraisal, and the assessment result of difference display switch mechanical endurance and electric life;
(4) show current environmental temperature information and current environment humidity information through ambient temperature and humidity monitoring management sub-platform.
6. state of electric distribution network monitoring method according to claim 5 is characterized in that: the workflow of said infrared point temperature monitoring means is following:
(1) the external communication interface circuit of infrared point temperature transducer is accepted the device address by the transmission of station side's distribution net equipment data center; The infrared MCU treatment circuit comparison device address that each infrared point temperature transducer is corresponding; If equate with the equipment of itself address; Then carry out temperature survey,, then do not operate if unequal;
(2) after infrared MCU treatment circuit is received thermometric instruction, carry out temperature acquisition, the temperature signal that collects is delivered to infrared MCU treatment circuit through A/D sample conversion circuit again and is carried out algorithm process through accurate operational amplifier, obtains temperature value;
(3) temperature value that calculates of infrared MCU treatment circuit shows at infrared display module, is sent to station side distribution net equipment data center through the external communication interface circuit again;
(4) the infrared point temperature transducer receives next device address and repeats said process, all accomplishes detection until all equipment.
7. state of electric distribution network monitoring method according to claim 5 is characterized in that: the workflow of said switch electric parameter monitoring means is following:
(1) the external communication interface circuit of switch electric parameter monitoring means is accepted the device address by the transmission of station side's distribution net equipment data center; Each switch electric parameter monitoring means corresponding switch MCU treatment circuit comparison device address; If equate with the equipment of itself address; Then monitor,, then do not operate if unequal;
(2) after switch MCU treatment circuit is received the instruction of monitoring, carry out information gathering;
(3) effective value and the fault-signal value of information of the electric current that calculates of switch MCU treatment circuit are sent to station side distribution net equipment data center through the switch external communication interface circuit;
(4) switch electric parameter monitoring means receives next device address and repeats said process, all accomplishes detection until all equipment.
8. state of electric distribution network monitoring method according to claim 5 is characterized in that: the workflow of said ambient temperature and humidity monitoring means is following:
(1) the environmental externality communication interface circuit of ambient temperature and humidity monitoring means is accepted the monitoring order by the transmission of station side's distribution net equipment data center;
(2) receive the instruction that ambient temperature and humidity measures after, carry out temperature, humidity collection;
(3) temperature, the humidity value that calculate of the environment MCU treatment circuit of ambient temperature and humidity monitoring means shows at the environment display module, is sent to station side distribution net equipment data center through the external communication interface circuit again.
CN2010101326359A 2010-03-26 2010-03-26 System for monitoring distribution network state and method thereof CN101800440B (en)

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CN101800440B true CN101800440B (en) 2012-05-30

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