CN103368149B - Low-voltage distribution system fault monitoring method - Google Patents
Low-voltage distribution system fault monitoring method Download PDFInfo
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- CN103368149B CN103368149B CN201210101788.6A CN201210101788A CN103368149B CN 103368149 B CN103368149 B CN 103368149B CN 201210101788 A CN201210101788 A CN 201210101788A CN 103368149 B CN103368149 B CN 103368149B
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Abstract
A kind of low-voltage distribution system fault monitoring method, comprises the following steps: monitor low pressure output switch; Obtain the state information of described low pressure output switch during the too low alarm of electric current; According to the fault type of the state information determination low-voltage distribution system of described low pressure output switch.In above-mentioned low-voltage distribution system fault monitoring method, by the monitoring to low pressure output switch, understand its state in real time.When system sends the too low alarm of electric current, the state information according to low pressure output switch judges out of order type fast, eliminates the time that person skilled goes to production line site inspection to incur loss through delay, and decreases because incuring loss through delay the loss caused.
Description
[technical field]
The present invention relates to distribution technique, particularly relate to a kind of low-voltage distribution system fault monitoring method.
[background technology]
In the industrial production, mostly be production line balance, staple together between links.Once certain flow process goes wrong in whole streamline, if cannot Timeliness coverage or eliminating, will have an impact to whole system, cause heavy losses.Wherein, the fault of industrial production low-voltage distribution system is very common.
In order to reduce the fault of low-voltage distribution system to the impact of whole production line, uninterrupted power supply (UPS, uninterruptedpowersupply) generally can be adopted to provide electric power support for production line.Uninterrupted power supply is a kind of containing energy storage device, is chief component, provides the continual power supply of constant voltage constant frequency with inverter.It is mainly used in providing continual supply of electric power to important load.When civil power input is normal, uninterrupted power supply is supplied to load to use by after civil power voltage stabilizing, and uninterrupted power supply is now exactly an electric main pressurizer, and it also charges to self-contained battery simultaneously.When civil power interrupts because of accident, uninterrupted power supply is immediately by the electric energy of self-contained battery, and the square normal load changed by inversion continues supply 220V alternating current, load is maintained and normally works and protect important load not to be damaged.And voltage excessive to voltage is too low usually all provides protection for no-break power unit.
In daily production process, when cause because of fault the electric current on low-voltage distribution system circuit too low or interrupt time, long distance control system can find and send the too low alarm of electric current (LO alarm).Person skilled can only confirm reason by front going production scene, be that downstream load causes, caused by the low pressure output switch escape being still responsible for cut-offfing production line out-put supply.Go to scene to result in temporal delay, production is had an impact, cause certain loss.
[summary of the invention]
Based on this, be necessary to provide a kind of low-voltage distribution system fault monitoring method determining fault type fast.
A kind of low-voltage distribution system fault monitoring method, comprises the following steps: monitor low pressure output switch; Obtain the state information of described low pressure output switch during the too low alarm of electric current; According to the fault type of the state information determination low-voltage distribution system of described low pressure output switch.
Wherein in an embodiment, described the step that low pressure output switch is monitored to be specially: described low pressure output switch shares the escape warning device of uninterrupted power supply master switch; During described acquisition electric current too low alarm, the step of the state of described low pressure output switch is specially: the state information obtaining the escape warning device of described uninterrupted power supply master switch during the too low alarm of electric current; The state information of described low pressure output switch when obtaining alarm according to the state information of described escape warning device.
Wherein in an embodiment, when the described state information according to described escape warning device obtains alarm, the step of the state information of described low pressure output switch is: if described escape warning device gives the alarm, then described low pressure output switch is in escape state; If described escape warning device no alarms and no surprises, then described low pressure output switch is in normal condition.
Wherein in an embodiment, the step of the fault type of the described state information determination low-voltage distribution system according to described low pressure output switch is: if described low pressure output switch is in escape state, then fault type is low pressure output switch escape fault; If described low pressure output switch is in normal condition, then fault type is downstream load fault.
Wherein in an embodiment, also comprise step: described fault type information is sent to default object.
Wherein in an embodiment, the method that described low pressure output switch and described uninterrupted power supply master switch share escape warning device is: the escape state of described low pressure output switch be parallel on the alarm condition point of the escape warning device of described uninterrupted power supply master switch.
In above-mentioned low-voltage distribution system fault monitoring method, by the monitoring to low pressure output switch, understand its state in real time.When system sends the too low alarm of electric current, the state information according to low pressure output switch judges out of order type fast, eliminates the time that person skilled goes to production line site inspection to incur loss through delay, and decreases because incuring loss through delay the loss caused.
[accompanying drawing explanation]
Fig. 1 is the flow chart of low-voltage distribution system fault monitoring method of the present invention;
Fig. 2 is the flow chart of one embodiment of the invention low-voltage distribution system fault monitoring method.
[embodiment]
In order to solve fault occur time, determine fault type, person skilled must before go to production scene to confirm, cause delay thus damnous problem, propose a kind of low-voltage distribution system fault monitoring method determining fault type fast.
In traditional uninterrupted power supply, after civil power is come in from the mains electricity input end of uninterrupted power supply, be mainly divided into three tunnels, a road exports the load of the stable electric current supply production line of low pressure through filter circuit of pressure-stabilizing.Lead up to after current rectifying and wave filtering circuit, exporting direct current, is the batteries charging of uninterrupted power supply.Also have a road to be input to comparator or CPU after diode and precision resistance step-down, control for gear and export adjustment.Low pressure output switch controls uninterrupted power supply and exports the electric power of production line load, and whole uninterrupted power supply only has the escape warning device of master switch, sends the too low alarm of electric current in long distance control system.Person skilled can only confirm by front going production scene, just can know that fault is that downstream load causes or is responsible for cut-offfing caused by the low pressure output switch escape of production line out-put supply.
Refer to Fig. 1, the low-voltage distribution system fault monitoring method of the present embodiment, comprises the following steps:
Step S110, monitors low pressure output switch.Warning device etc. is arranged to low pressure output switch, it is monitored, obtain the state information of low pressure output switch in real time.
Step S120, the state information of low pressure output switch when obtaining electric current too low alarm.When cause because of fault the electric current on low-voltage distribution system circuit too low or interrupt time, long distance control system can find and send the too low alarm of electric current, and now, obtain the state information of low pressure output switch, whether the alarm device as arranged it reports to the police.
Step S130, according to the fault type of the state information determination low-voltage distribution system of low pressure output switch.During alarm too low according to electric current, the state information of the low pressure output switch of Real-time Obtaining judges and determines the fault type of low-voltage distribution system.
In above-mentioned low-voltage distribution system fault monitoring method, by the monitoring to low pressure output switch, understand its state in real time.When system sends the too low alarm of electric current, the state information according to low pressure output switch judges out of order type fast, eliminates the time that person skilled goes to production line site inspection to incur loss through delay, and decreases because incuring loss through delay the loss caused.
Refer to Fig. 2, in above-mentioned low-voltage distribution system fault monitoring method, step S110 is specially:
Step S210, low pressure output switch shares the escape warning device of uninterrupted power supply master switch.Master switch escape will inevitably disconnect the low-voltage distribution system that low pressure output switch controls.Therefore, the escape warning device of uninterrupted power supply master switch is monitored uninterrupted power supply master switch and low pressure output switch simultaneously here, consistent with the effect of arranging warning device to low pressure output switch separately.Meanwhile, share escape warning device ready-made on the master switch of uninterrupted power supply, effectively saved cost.Concrete, the method that low pressure output switch and uninterrupted power supply master switch share escape warning device is: the escape state of low pressure output switch be parallel on the alarm condition point of the escape warning device of uninterrupted power supply master switch.
Meanwhile, step S120 is specially:
Step S220, the state information of the escape warning device of uninterrupted power supply master switch when obtaining electric current too low alarm.Now, as long as obtain the state information of the escape warning device of uninterrupted power supply master switch, the state of low pressure output switch when can learn that in low-voltage distribution system monitoring sends electric current too low alarm.
Step S230, the state information of low pressure output switch when obtaining alarm according to the state information of escape warning device.Specifically in the present embodiment, step S230 is specially: if escape warning device gives the alarm, then low pressure output switch is in escape state.If escape warning device no alarms and no surprises, then low pressure output switch is in normal condition.
During alarm too low according to electric current, the state information of low pressure output switch, just can determine the fault type of low-voltage distribution system.Fault type generally has two large classes, low pressure output switch escape fault and downstream load fault.If low pressure output switch is in escape state, then fault type is low pressure output switch escape fault.Concrete, cause the reason of low pressure output switch escape to mainly contain following several: A, low pressure output switch damage, and now need to replace with low pressure output switch for subsequent use.B, downstream load short circuit also can make low pressure output switch protect escape, now need person skilled to check load and line fault point, solve short circuit and extremely can recover switch power transmission.C, low pressure output switch set point arrange too small meeting and cause switch jump, now can tune up switch definite value and arrange.The fastening terminal of D, low pressure output switch turnover wiring loosens and makes switch jump, and processing method is for checking and fastening terminal stud.
If low pressure output switch is in normal condition, then fault type is downstream load fault.The concrete reason of downstream load fault comprise downstream load surprisingly close or load because of disorderly closedown etc., these faults all can cause low-voltage distribution system line current too low, and long distance control system sends the too low alarm of electric current.
In one embodiment, due to the diversity of fault concrete reason, above-mentioned low-voltage distribution system fault monitoring method also comprises step fault type information being sent to default object.Default object is generally the Measuring error personnel that can process dependent failure, after judging fault type, fault type information is sent to default personnel, the very first time notifies that it goes corresponding fault scene to overhaul, production line is resumed production fast, reduces production line and to stop the loss brought.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (4)
1. a low-voltage distribution system fault monitoring method, is characterized in that, comprises the following steps:
Low pressure output switch is monitored; Described the step that low pressure output switch is monitored to be specially: described low pressure output switch shares the escape warning device of uninterrupted power supply master switch; The method that described low pressure output switch and described uninterrupted power supply master switch share escape warning device is: the escape state of described low pressure output switch be parallel on the alarm condition point of the escape warning device of described uninterrupted power supply master switch;
Obtain the state information of described low pressure output switch during the too low alarm of electric current; During described acquisition electric current too low alarm, the step of the state of described low pressure output switch is specially: the state information obtaining the escape warning device of described uninterrupted power supply master switch during the too low alarm of electric current; The state information of described low pressure output switch when obtaining alarm according to the state information of described escape warning device;
According to the fault type of the state information determination low-voltage distribution system of described low pressure output switch.
2. low-voltage distribution system fault monitoring method according to claim 1, it is characterized in that, when the described state information according to described escape warning device obtains alarm, the step of the state information of described low pressure output switch is: if described escape warning device gives the alarm, then described low pressure output switch is in escape state; If described escape warning device no alarms and no surprises, then described low pressure output switch is in normal condition.
3. low-voltage distribution system fault monitoring method according to claim 2, it is characterized in that, the step of the fault type of the described state information determination low-voltage distribution system according to described low pressure output switch is: if described low pressure output switch is in escape state, then fault type is low pressure output switch escape fault; If described low pressure output switch is in normal condition, then fault type is downstream load fault.
4. low-voltage distribution system fault monitoring method according to claim 1, is characterized in that, also comprise step:
Described fault type information is sent to default object.
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| CN201210101788.6A CN103368149B (en) | 2012-04-09 | 2012-04-09 | Low-voltage distribution system fault monitoring method |
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| CN110297140B (en) * | 2019-06-28 | 2021-03-23 | 北京机械设备研究所 | Fault prediction method and device of power distribution system |
| CN115765135B (en) * | 2022-11-10 | 2023-05-05 | 大庆恒驰电气有限公司 | Intelligent UPS energy storage system |
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| CN102136400A (en) * | 2010-01-27 | 2011-07-27 | Ls产电株式会社 | Circuit breaker having trip cause indicating mechanism |
| CN102237711A (en) * | 2010-04-29 | 2011-11-09 | 上海宝钢化工有限公司 | Standby power switching device and power failure judgment method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2798298Y (en) * | 2005-04-01 | 2006-07-19 | 戴一武 | Relay with display for motor vehicle |
| CN101355340A (en) * | 2007-07-25 | 2009-01-28 | 宝山钢铁股份有限公司 | Control method for automatically switching standby power of synchronous motor |
| CN101895086A (en) * | 2009-05-18 | 2010-11-24 | 叶晓燕 | Automatic reclosing switch of thyristor |
| CN102136400A (en) * | 2010-01-27 | 2011-07-27 | Ls产电株式会社 | Circuit breaker having trip cause indicating mechanism |
| CN102237711A (en) * | 2010-04-29 | 2011-11-09 | 上海宝钢化工有限公司 | Standby power switching device and power failure judgment method thereof |
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