CN104850047A - Safety monitoring system for electric power equipment - Google Patents
Safety monitoring system for electric power equipment Download PDFInfo
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- CN104850047A CN104850047A CN201510118967.4A CN201510118967A CN104850047A CN 104850047 A CN104850047 A CN 104850047A CN 201510118967 A CN201510118967 A CN 201510118967A CN 104850047 A CN104850047 A CN 104850047A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
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Abstract
The invention provides a safety monitoring system for electric power equipment in order to reduce the cost required by safety monitoring of field electric power equipment. The safety monitoring system comprises a first-level monitoring unit, a second-level monitoring unit, a storage unit, a processing unit, and an alarm unit, the processing unit comprises a temperature detection unit for detecting the external ambient temperature, the first-level monitoring unit sends acquired information to the processing unit, the alarm unit emits alarm signals according to the output information of the processing unit, the monitoring level of the second-level monitoring unit is higher than the monitoring level of the fist-level monitoring unit, and the second-level monitoring unit starts the safety monitoring of the electric power equipment under the control of the processing unit according to the monitoring information of the first-level monitoring unit. According to the safety monitoring system, various faults caused by electrical, environment, and/or external human factors can be recognized via video information acquired by a video acquisition unit, problems are discovered, alarms are emitted, and the problem of high cost of the safety monitoring system due to the requirement of long-term switch-on of various sensors is solved.
Description
Technical field
The present invention relates to a kind of electric power safety detection technique, specifically a kind of power equipment safety supervisory system.
Background technology
Field electric equipment, if oil-immersed type transformer, oil switch, capacitor, cable, accumulator, low-voltage circuit, power distribution equipment, opertaing device, electronic equipment, pulpit etc. are containing a large amount of combustible, as the hydrogen etc. of the electric wire and cable jacket of the organic polymers such as transformer oil, circuit-breaker oil, Polyvinylchloride, insulating board, accumulator release.Along with the utilization factor of power equipment and enforcement increases, some operation life is longer, artificial or the natural cause of being subject to had is destroyed and occurs that operation troubles even affects the normal operation of power equipment, and serious goes back fire hazard, brings larger injury to the environment residing for power equipment.Such as, cause under high-risk moist running environment the insulation fault of outdoor power equipment in the whole nation from south to north many places have record, it is operation power maintainer and equipment vendors' very stubborn problem always.Wherein, how can the humidity of discovery power equipment inside early or the situation of condensation, and report to the police arranges process particularly key to operating maintenance personnel in time.Along with the propelling day by day of domestic intelligent grid strategy and distribution automation, to power equipment, the equipment particularly run under outdoor severe environmental conditions carry out implementing effective running state monitoring and fast fault alarm will become the trend of future development.
Therefore, the security of development to field electric equipment of electric power is had higher requirement.
Current electric power apparatus monitoring device is based on common smoke-temperature sensing type combined type detector and electric parameter monitoring, and this combined type detector only detects for single parameter temperature or smog.But, this monitor mode needs to be the various sensor of power equipment one direct-open in the wild, and these sensors also exist consume when working under long-term rugged surroundings, the monitoring cost causing field electric equipment remains high, and traditional supervisory system cannot be widely applied.
Summary of the invention
The present invention is in order to reduce the cost to field electric device security necessary for monitoring, provide a kind of power equipment safety supervisory system, comprise one-level monitoring unit, secondary monitoring unit, storage unit, processing unit and alarm unit, processing unit comprises the temperature detecting unit detecting ambient temperature, the information collected is sent to processing unit by one-level monitoring unit, described alarm unit sends alerting signal according to the output information of processing unit, the monitoring grade of described secondary monitoring unit is higher than one-level monitoring unit and it starts the security monitoring to power equipment under control of the processing unit according to the monitor message of one-level monitoring unit, and when secondary monitoring unit is not unlocked, described processing unit control one-level monitoring unit is in normally open and secondary monitoring unit is in normally off, when secondary monitoring unit open and when not collecting preset parameter, described processing unit control one-level monitoring unit is in normally off and secondary monitoring unit is in normally open, after secondary monitoring unit collects preset parameter, described processing unit control one-level monitoring unit is in normally open and secondary monitoring unit is in normally off.
Further, described one-level monitoring unit is video acquisition unit.
Further, described video acquisition unit is infrared imaging collecting unit.
Further, described secondary monitoring unit comprises fire alarm monitoring unit, electromagnetic anomaly monitoring unit and vibration monitoring unit.
Further, described fire alarm monitoring unit comprises: signal transacting A/D module, CPU module, power module, communication unit and built-in multiple sensors; Described sensor gathers electric power place fire characteristic signal; The CPU module of described fire alarm monitoring unit is responsible for receiving the signal collected with processes sensor, described signal transacting A/D module be used for by in-situ measurement to the analog quantity of dissimilar fire characteristic signal convert the digital signal being convenient to CPU module process to.
Further, described processing unit comprises: load module, output module, display module, CPU module and power module; The multi-Dimensional parameters that the CPU module of described monitoring main control computer transmits according to the CPU module of fire alarm monitoring unit, make the judgement with or without fire and fire risk, and in conjunction with the manual setting of load module, the information of display and movement content are passed to display module and output module respectively.
Further, described sensor be selected from following sensor two or more, to form the multiple synchronizing detection comprising multi-Dimensional parameters and implement multiple parameters, for gathering the sensor of the characteristic parameter of electric power place fire characteristic signal, described characteristic parameter comprises temperature, humidity, and smog, the presence or absence of SO2, HCl, NOx, CO, CO2 or concentration, also comprise the video sensor for carrying out video monitoring to the on-the-spot visible ray in electric power place.
Further, described load module is used for manually inputting parameters, alarming threshold value is set, described display module whether shows and display information, described output module work whether and output content.
Further, described display module shows electric power place fire characteristic signal, characteristic ginseng value and alarming threshold value, occurs fire hazard or condition of a fire time.
Further, described output module carries out sound and light alarm and fire-fighting link action, and when the fire signal detected exceedes the alarming threshold value of setting, output alarm signal, controls fire-fighting link device and start fire-fighting link work at any time when needed.
Compared with prior art, technological merit is in the present invention:
1. only rely on the video information of video acquisition unit collection to identify under normal circumstances and comprise electric, environment, and/or the various faults that extraneous human factor causes, pinpoint the problems and give the alarm, solving and need long-term to open multiple sensors and the high difficult problem of the safety monitoring system cost that brings.
2. the information based on infrared video collection is compared with the reference information under the various external temperature conditions of preserving in advance, and the signal whether opening compound sensor is provided according to comparative result, the stability requirement of remote monitoring server can be reduced, thus be conducive to supervisory system and apply on more wide region.
3. in fire alarm monitoring unit, CPU module expanded function is strong, the sensor of multiple characteristic parameter can be comprised video sensor can be compounded in a combined type detector after combination in any, achieve synchronizing detection and the video detection of fire multiple parameters, thus temperature, humidity, SO are comprised to electric power place
2, HCl, NO
x, CO, CO
2carry out complete detection Deng the characteristic signal in interior fire development each stage, avoid and fail to report, report by mistake.
Accompanying drawing explanation
Fig. 1 shows the one-piece construction block diagram of power equipment safety supervisory system of the present invention;
Fig. 2 is detection data anastomosing algorithm process of the present invention;
Fig. 3 shows the workflow diagram of fire alarm monitoring unit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
The one-piece construction block diagram of power equipment safety supervisory system as shown in Figure 1, comprise one-level monitoring unit, secondary monitoring unit, storage unit, processing unit and alarm unit, processing unit comprises the temperature detecting unit detecting ambient temperature, the information collected is sent to processing unit by one-level monitoring unit, and described alarm unit sends alerting signal according to the output information of processing unit.Described one-level monitoring unit is video acquisition unit, and preferably, described one-level monitoring unit is infrared imaging collecting unit.Described secondary monitoring unit comprises fire alarm monitoring unit, electromagnetic anomaly monitoring unit and vibration monitoring unit.
The monitoring grade of described secondary monitoring unit is higher than one-level monitoring unit and it starts the security monitoring to power equipment under control of the processing unit according to the monitor message of one-level monitoring unit.When secondary monitoring unit is not unlocked, described processing unit control one-level monitoring unit is in normally open and secondary monitoring unit is in normally off.
Before power equipment safety supervisory system of the present invention does not have production run, first gather by infrared imaging collecting unit (being such as infrared camera) image that this power equipment normally works at different ambient temperatures and preserve in the memory unit.When real work, infrared image under the actual condition that infrared imaging collecting unit (being such as infrared camera) collects, processing unit according to himself with temperature detecting unit (such as, thermometer) measures ambient temperature, and according to this environment temperature, the infrared image under actual condition is mated with the infrared image prestored in storage unit, compared the diff area matched, below meeting, a period of time of two conditions just makes above-mentioned processing unit start secondary monitoring unit:
Condition 1: mate the position of diff area that obtains and be no more than predetermined threshold value and volume is more than or equal to preset vol threshold value near the distance of power equipment;
Condition 2: mate the diff area that obtains and be colour temperature and colour temperature difference exceeds default high temperature threshold value or lower than the low temperature threshold preset.
Secondary monitoring unit is opened and when not collecting preset parameter, described processing unit control one-level monitoring unit is in normally off and secondary monitoring unit is in normally open; Preset parameter mentioned here comprises the parameter that the multiple sensors included by secondary monitoring unit collects.After secondary monitoring unit collects preset parameter, described processing unit control one-level monitoring unit is in normally open and secondary monitoring unit is in normally off.
For avoiding the failing to report of electric power fire composite detecting device, reporting by mistake, the characteristic signal of electric power fire composite detecting device to electric power fire different stages of development detects comprehensively, video monitoring is carried out to on-the-spot visible ray, therefore set temperature, smog, humidity, SO simultaneously
2, HCl, NO
x, CO, CO
2and polytype sensor such as video, the sensor of at least built-in 2 types in each fire alarm monitoring unit.For smog, the characteristic parameter of sensor collection is whether smog exists.For gas, the characteristic parameter of sensor collection is the concentration of gas.
According to a preferred embodiment of the invention, fire alarm monitoring unit comprises built-in multiple sensors, signal transacting A/D module, CPU module, wireless communication module and power module, and number of probes depends on the number of fire characteristic signal.The simulating signal that in fire alarm monitoring unit, each sensor collects, become the digital signal of the convenient process of the CPU module of fire alarm monitoring unit by signal transacting A/D module converts after, be transferred to the CPU module of fire alarm monitoring unit, then be transferred to the processing unit of power equipment safety supervisory system.In a preferred embodiment, signal transacting A/D module selects ADS1110, and the CPU module of fire alarm monitoring unit adopts S08D260.
The house dog of the external protected data of CPU module of fire alarm monitoring unit, prevents raw data to be tampered, and as required for expanding the number of probes in fire alarm monitoring unit.In some cases, one or several sensor is not only comprised in described fire alarm monitoring unit, but once integrated more (such as tens) sensor, be used for surveying multiple fire signal, the RAM that at this time often CPU module carries cannot meet and stores a large amount of data simultaneously.Therefore, CPU module must possess external RAM function.
It should be noted that, above-mentioned expansion can have restriction: CPU module Received signal strength ability and the data rate of considering into fire alarm monitoring unit, in preferred embodiment of the present invention, in each fire alarm monitoring unit, number of probes is no more than 20, can carry out synchronizing detection to the fire signal characteristic parameter of no more than 20 kinds.
In a preferred embodiment, the CPU module of fire alarm monitoring unit adopts single-chip microcomputer or the microprocessor with interrupt pin and reset pin.House dog adopts MAX708 chip.MAX708 is the monitoring of a kind of power supply of microprocessor and watchdog chip, can export high level effectively and the reset signal of Low level effective simultaneously.Reset signal can be inputted by VCC voltage, hand-reset, or by independently comparer triggering.Thresholding is 1.25V, can be used for supervision the 2nd power supply signal for the independent comparators of power-fail or the warning of low power supply and provide the warning function of Voltage Drop.This function is for device sends the normal shutdown before reset signal, sends alarm or electrical source exchange and data protection and consider to operator.
The processing unit of power equipment safety supervisory system comprises load module, output module, display module, CPU module (for avoiding and the obscuring of other CPU module, being called message processing module below), wireless communication module and power module.The message processing module of the processing unit of power equipment safety supervisory system is the message processing module adopting ARM9 kernel, message processing module receives the detectable signal that fire alarm monitoring unit transmits, carry out merging and by the various Intelligent Fusion algorithms extensively adopted in prior art, according to actual complex degree and judge timeliness requirement etc., preferably certain Intelligent Fusion algorithm judges fire condition and fire risk.In a preferred embodiment, the processing unit of power equipment safety supervisory system selects MK60DN512ZVLQ.In another embodiment, the load module of the processing unit of power equipment safety supervisory system is keyboard or some buttons, and output module adopts liquid crystal display.
Whether show and show information, output module work whether and output content etc. by the alarming threshold value manually arranging the characteristic parameter of multiple electric power place fire of load module, display module (being generally display screen).Relevant fire information (comprise fire characteristic signal, characteristic ginseng value, alarm threshold value, occur fire hazard or condition of a fire time etc.) is clearly shown by display module, makes the clear and definite fire condition of staff, and is reported to the police by output module.Message processing module reserves the RS485 interface carrying out communication with fire-fighting link device in addition, controls fire-fighting link device and starts fire-fighting link work at any time when needed.Described fire-fighting link device comprises automatic nozzle (water spray and/or foam), rolling screen door, fire extinguishing pump, spray pump, smoke exhaust fan, pressure fan, air port, exhaust smoke valve, elevator control gear, forceful electric power switching device shifter etc.In a preferred embodiment, what the RS485 interface of the processing unit of power equipment safety supervisory system connected is relay, by the action of this Control fire-fighting link device.
What the Intelligent Fusion algorithm in the present invention adopted is Multi-source Information Fusion algorithm commonly known in the art.Be specifically applied in the present invention, detection data message fusion calculation process as described in Figure 2.Fusion calculation process comprises Information Level, characteristic layer and decision-making level.The mentality of designing of each layer is: Information Level is responsible for the collection of on-the-spot raw data, and field data data are temperature, smog, CO, HCl, SO
2, NO
x, CO
2, humidity, the on-the-spot main signal before wherein fire occurs and when fire just occurs is temperature, smog, CO, HCl, and afterwards on-the-spot main signal has occurred and occurred fire is SO
2, NO
x, CO
2, humidity.Because on-site signal is analog quantity, the interference being easily subject to surrounding environment is unstable, needs to carry out a series of process as filtering, amplification etc., is processed into the x that characteristic layer receives respectively
1, x
2, x
3, x
4, x
5, x
6, x
7, x
8.The output signal of characteristic layer to Information Level utilizes neural network algorithm to merge: before occurring for fire or when fire just occurs, fire recognition is become naked light probability y
1, smoldering fire probability y
2and without fiery probability y
3; After having occurred for fire or having occurred, because fire can produce danger to field apparatus and personnel, therefore by dangerous for fire recognition forming apparatus probability y4, personnel hazard's probability y5.The condition of a fire that characteristic layer exports and dangerous probability have certain fuzzy type, especially when three kinds of condition of a fire probability or fire risk probable value are all near 50%, be difficult to judge the current condition of a fire and danger, therefore need that these may be sent into decision-making level with the information of ambiguity and carry out obfuscation reasoning, export fire and final Probability p occurs
1with fire hazard danger coefficient p
2.This specific design of three layers of Information Level, characteristic layer and decision-making level and enforcement are that those skilled in the art easily can realize according to Multi-source Information Fusion algorithm under the prerequisite not paying creative work, do not do superfluous old at this.
The workflow diagram of electric power fire composite detecting device of the present invention as shown in Figure 3.First electric power place fire signal characteristic parameter is gathered, through processing and judging the condition of a fire after signal characteristic parameter transmission to the message processing module of the processing unit of power equipment safety supervisory system by the sensor in fire alarm monitoring unit.If judge on firely to report to the police immediately.Mainly raise with temperature because of Initial Stage of Fire or discharge a large amount of smog for clear signal feature, if so the not on fire but temperature detected or smokescope raise and exceed alarming threshold value, also reported to the police immediately.According to field condition if necessary, fire-fighting link device is started.If do not exceed alarming threshold value without the condition of a fire or the temperature detected or smokescope, do not report to the police, continue monitoring.
The structure & working mechanism of electromagnetic anomaly monitoring unit of the present invention and vibration monitoring unit is similar with fire alarm monitoring unit, and just the type of sensor is changed to: electromagnetic anomaly monitoring unit only includes voltage sensor, current sensor, magnetic field sensor; Vibration monitoring unit only includes vibration transducer.Therefore, do not repeat them here.
The above-mentioned description to embodiment can understand and application invention for ease of those skilled in the art.Person skilled in the art obviously easily can make various amendment to these embodiments, and this General Principle illustrated is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here.Those skilled in the art are according to the announcement of invention, and the improvement made for the present invention and amendment all should in protection scope of the present invention.What provide in above-described embodiment is the device model adopted in a kind of embodiment for the technical scheme of request of the present invention protection, and the device of request protection in fact of the present invention is not limited to the device of above model.User can select other products with similar functions to replace.
Claims (10)
1. a power equipment safety supervisory system, it is characterized in that, comprise one-level monitoring unit, secondary monitoring unit, storage unit, processing unit and alarm unit, processing unit comprises the temperature detecting unit detecting ambient temperature, the information collected is sent to processing unit by one-level monitoring unit, described alarm unit sends alerting signal according to the output information of processing unit, the monitoring grade of described secondary monitoring unit is higher than one-level monitoring unit and it starts the security monitoring to power equipment under control of the processing unit according to the monitor message of one-level monitoring unit, and when secondary monitoring unit is not unlocked, described processing unit control one-level monitoring unit is in normally open and secondary monitoring unit is in normally off, when secondary monitoring unit open and when not collecting preset parameter, described processing unit control one-level monitoring unit is in normally off and secondary monitoring unit is in normally open, after secondary monitoring unit collects preset parameter, described processing unit control one-level monitoring unit is in normally open and secondary monitoring unit is in normally off.
2. power equipment safety supervisory system according to claim 1, is characterized in that, described one-level monitoring unit is video acquisition unit.
3. power equipment safety supervisory system according to claim 2, is characterized in that, described video acquisition unit is infrared imaging collecting unit.
4. the power equipment safety supervisory system according to Claims 2 or 3, is characterized in that, described secondary monitoring unit comprises fire alarm monitoring unit, electromagnetic anomaly monitoring unit and vibration monitoring unit.
5. power equipment safety supervisory system according to claim 4, is characterized in that, described fire alarm monitoring unit comprises: signal transacting A/D module, CPU module, power module, communication unit and built-in multiple sensors; Described sensor gathers electric power place fire characteristic signal; The CPU module of described fire alarm monitoring unit is responsible for receiving the signal collected with processes sensor, described signal transacting A/D module be used for by in-situ measurement to the analog quantity of dissimilar fire characteristic signal convert the digital signal being convenient to CPU module process to.
6. the power equipment safety supervisory system according to Claims 2 or 3, is characterized in that, described processing unit comprises: load module, output module, display module, CPU module and power module; The multi-Dimensional parameters that the CPU module of described monitoring main control computer transmits according to the CPU module of fire alarm monitoring unit, make the judgement with or without fire and fire risk, and in conjunction with the manual setting of load module, the information of display and movement content are passed to display module and output module respectively.
7. power equipment safety supervisory system according to claim 5, it is characterized in that, described sensor be selected from following sensor two or more, to form the multiple synchronizing detection comprising multi-Dimensional parameters and implement multiple parameters, for gathering the sensor of the characteristic parameter of electric power place fire characteristic signal, described characteristic parameter comprises temperature, humidity, and smog, SO
2, HCl, NOx, CO, CO
2presence or absence or concentration, also comprise the video sensor for carrying out video monitoring to the on-the-spot visible ray in electric power place.
8. according to the power equipment safety supervisory system one of claim 1-3 Suo Shu, it is characterized in that, described load module is used for manually inputting parameters, alarming threshold value is set, described display module whether shows and display information, described output module work whether and output content.
9. according to the power equipment safety supervisory system one of claim 1-3 Suo Shu, it is characterized in that, described display module shows electric power place fire characteristic signal, characteristic ginseng value and alarming threshold value, occurs fire hazard or condition of a fire time.
10. according to the power equipment safety supervisory system one of claim 1-3 Suo Shu, it is characterized in that, described output module carries out sound and light alarm and fire-fighting link action, when the fire signal detected exceedes the alarming threshold value of setting, output alarm signal, controls fire-fighting link device and starts fire-fighting link work at any time when needed.
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| CN201510118967.4A CN104850047A (en) | 2015-03-18 | 2015-03-18 | Safety monitoring system for electric power equipment |
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| CN201510118967.4A CN104850047A (en) | 2015-03-18 | 2015-03-18 | Safety monitoring system for electric power equipment |
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| CN105403783A (en) * | 2015-11-12 | 2016-03-16 | 成都格瑞思文化传播有限公司 | Novel digital processing unit |
| CN105446248A (en) * | 2015-12-29 | 2016-03-30 | 安徽海兴泰瑞智能科技有限公司 | Power grid power distribution security auxiliary monitoring system |
| CN106932022A (en) * | 2017-04-18 | 2017-07-07 | 潍坊科技学院 | A kind of automation control system for power plant |
| CN107705490A (en) * | 2017-09-26 | 2018-02-16 | 深圳市亿联智能有限公司 | A kind of fire early-warning system based on charged pool intelligent video camera head suit |
| CN109213029A (en) * | 2018-07-25 | 2019-01-15 | 杭州顿恒科技有限公司 | A kind of power-consumption control system of monitoring device |
| CN110022000A (en) * | 2019-05-22 | 2019-07-16 | 上海拜安实业有限公司 | The terminal installation of multi-parameter fusion Intellisense function is realized in substation |
| CN110908307A (en) * | 2019-11-01 | 2020-03-24 | 国网江苏省电力有限公司盐城供电分公司 | Power equipment temperature monitoring system and monitoring method thereof |
| CN111413903A (en) * | 2020-04-01 | 2020-07-14 | 镇江颀珑工程技术服务有限公司 | Nonlinear time-delay remote monitoring system for industrial production |
| CN112034287A (en) * | 2020-09-03 | 2020-12-04 | 淮阴工学院 | Electric power safety monitoring system based on big data |
| CN112365186A (en) * | 2020-11-27 | 2021-02-12 | 中国电建集团海外投资有限公司 | Health degree evaluation method and system for electric power information system |
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