CN103368149A - Low-voltage power distribution system fault monitoring method - Google Patents
Low-voltage power distribution system fault monitoring method Download PDFInfo
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- CN103368149A CN103368149A CN2012101017886A CN201210101788A CN103368149A CN 103368149 A CN103368149 A CN 103368149A CN 2012101017886 A CN2012101017886 A CN 2012101017886A CN 201210101788 A CN201210101788 A CN 201210101788A CN 103368149 A CN103368149 A CN 103368149A
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Abstract
Disclosed is a low-voltage power distribution system fault monitoring method including the following steps: monitoring a low-voltage output switch; acquiring state information of the low-voltage output switch when an alarm is sent because current is too low; and determining a fault type of the low-voltage power distribution system according to the state information of the low-voltage output switch. In the above-mentioned low-voltage power distribution system fault monitoring method, a state of the low-voltage power distribution system is acquired in a real-time manner through monitoring of the low-voltage output switch. When the system sends a current-too-low alarm, the fault type of the low-voltage power distribution system is judged quickly according to the state information of the low-voltage output switch so that delayed time for related technicians in going to a production line site for inspection is saved and loss caused by delay is reduced.
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 industrial production, mostly be streamline production, staple together between the links.In case certain flow process goes wrong in the whole streamline, if can't in time find or get rid of, will exert an influence to whole system, cause heavy losses.Wherein, industrial production is very common with the fault of low-voltage distribution system.
For the impact on whole production line of the fault that reduces low-voltage distribution system, generally can adopt uninterrupted power supply (UPS, uninterrupted power supply) to provide the electric power support for production line.Uninterrupted power supply is a kind of energy storage device that contains, and take inverter as chief component, provides the continual power supply of constant voltage constant frequency.It is mainly used in providing continual supply of electric power to important load.When civil power is inputted when normal, uninterrupted power supply is supplied to load to use after with the civil power voltage stabilizing, and the uninterrupted power supply of this moment is exactly an electric main pressurizer, and it also charges to self-contained battery simultaneously.When civil power interrupted because of accident, uninterrupted power supply was immediately with the electric energy of self-contained battery, and the method by the inversion conversion continues supply 220V alternating current to load, made load keep normal operation and the protection important load is not damaged.No-break power unit all provides protection to the excessive and voltage of voltage is too low usually.
In daily production process, when barrier for some reason causes electric current on the low-voltage distribution system circuit to cross low or when interrupting, long distance control system can be found and send electric current and cross low alarm (LO alarm).Person skilled can only be confirmed reason by front going to the production scene, is that downstream load causes, and still is responsible for cut-offfing due to the low pressure output switch escape of production line out-put supply.Go to the scene to cause temporal delay, production is exerted an influence, caused certain loss.
[summary of the invention]
Based on this, be necessary to provide a kind of low-voltage distribution system fault monitoring method of determining fast fault type.
A kind of low-voltage distribution system fault monitoring method may further comprise the steps: the low pressure output switch is monitored; Obtain electric current and cross the state information of described low pressure output switch when hanging down alarm; Determine the fault type of low-voltage distribution system according to the state information of described low pressure output switch.
Among embodiment, the described step that the low pressure output switch is monitored is specially therein: described low pressure output switch shares the escape warning device of uninterrupted power supply master switch; Described when obtaining electric current and crossing low alarm the step of the state of described low pressure output switch be specially: the state information of the escape warning device of described uninterrupted power supply master switch when obtaining electric current and crossing low alarm; The state information of described low pressure output switch when obtaining alarm according to the state information of described escape warning device.
Therein among embodiment, the step of the state information of described low pressure output switch was when described state information according to described escape warning device obtained alarm: if described escape warning device gives the alarm, then described low pressure output switch is in the escape state; If described escape warning device no alarms and no surprises, then described low pressure output switch is in normal condition.
Among embodiment, described state information according to described low pressure output switch determines that the step of the fault type of low-voltage distribution system is: if described low pressure output switch is in the escape state, then fault type is low pressure output switch escape fault therein; If described low pressure output switch is in normal condition, then fault type is the downstream load fault.
Among embodiment, also comprise step: described fault type information is sent to default object therein.
Among embodiment, the method that described low pressure output switch and described uninterrupted power supply master switch share the escape warning device is therein: the escape state of described low pressure output switch is parallel on the alarm condition point of escape warning device of described uninterrupted power supply master switch.
In above-mentioned low-voltage distribution system fault monitoring method, by the monitoring to the low pressure output switch, understand in real time its state.When system sends electric current and crosses low alarm, judge fast out of order type according to the state information of low pressure output switch, saved the time that person skilled goes to the production line site inspection to incur loss through delay, reduced the loss that causes because incuring loss through delay.
[description of drawings]
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]
When occuring in order to solve fault, determine fault type, person skilled must before go to the production scene to confirm, thereby cause incuring loss through delay damnous problem, a kind of low-voltage distribution system fault monitoring method of fast definite fault type has been proposed.
In traditional uninterrupted power supply, after civil power is come in from the mains electricity input end of uninterrupted power supply, mainly be divided into three tunnel, one tunnel load through the stable electric current supply production line of filter circuit of pressure-stabilizing output low pressure.Lead up to behind the current rectifying and wave filtering circuit, output DC is the batteries charging of uninterrupted power supply.Also have one the tunnel through being input to comparator or CPU after diode and the precision resistance step-down, be used for gear control and output and adjust.Low pressure output switch control uninterrupted power supply is to the electric power output of production line load, and whole uninterrupted power supply only has the escape warning device of master switch, sends electric current in long distance control system and crosses low alarm.Person skilled can only confirm by front going to the production scene, can know that just fault is that downstream load causes or is responsible for cut-offfing due to the low pressure output switch escape of production line out-put supply.
See also Fig. 1, the low-voltage distribution system fault monitoring method of the present embodiment may further comprise the steps:
Step S110 monitors the low pressure output switch.The low pressure output switch is arranged warning device etc., come it is monitored, obtain in real time the state information of low pressure output switch.
Step S120 obtains the state information that electric current is crossed low pressure output switch when hanging down alarm.When barrier for some reason causes electric current on the low-voltage distribution system circuit to cross low or when interrupting, long distance control system can be found and send electric current and cross low alarm, at this moment, obtains the state information of low pressure output switch, as whether the alarm device of its setting being reported to the police etc.
Step S130 determines the fault type of low-voltage distribution system according to the state information of low pressure output switch.The fault type of low-voltage distribution system is judged and determined to the state information of the low pressure output switch of Real-time Obtaining when crossing low alarm according to electric current.
In above-mentioned low-voltage distribution system fault monitoring method, by the monitoring to the low pressure output switch, understand in real time its state.When system sends electric current and crosses low alarm, judge fast out of order type according to the state information of low pressure output switch, saved the time that person skilled goes to the production line site inspection to incur loss through delay, reduced the loss that causes because incuring loss through delay.
See also Fig. 2, in the above-mentioned low-voltage distribution system fault monitoring method, step S110 is specially:
Step S210, the low pressure output switch shares the escape warning device of uninterrupted power supply master switch.The master switch escape will inevitably disconnect the low-voltage distribution system of low pressure output switch control.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 warning device being set for the low pressure output switch separately.Simultaneously, ready-made escape warning device on the master switch of shared uninterrupted power supply has effectively been saved cost.Concrete, the method for the shared escape warning device of low pressure output switch and uninterrupted power supply master switch is: the escape state of low pressure output switch is parallel on the alarm condition point of escape warning device of uninterrupted power supply master switch.
Simultaneously, step S120 is specially:
Step S220 obtains the state information that electric current is crossed the escape warning device of uninterrupted power supply master switch when hanging down alarm.At this moment, as long as obtain the state information of the escape warning device of uninterrupted power supply master switch, can learn the state of low pressure output switch when low-voltage distribution system monitoring is sent electric current and crossed 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 the escape warning device gives the alarm, then the low pressure output switch is in the escape state.If escape warning device no alarms and no surprises, then the low pressure output switch is in normal condition.
The state information of low pressure output switch when crossing low alarm according to electric current just can be determined 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 the low pressure output switch is in the escape state, then fault type is low pressure output switch escape fault.Concrete, cause that the reason of low pressure output switch escape mainly contains following several: A, low pressure output switch damage, and need to replace with low pressure output switch for subsequent use this moment.B, downstream load short circuit also can make low pressure output switch protection escape, need this moment person skilled to check load and line fault point, and the solution short circuit unusually can recover switch and send electricity.C, low pressure output switch set point arrange too small meeting and cause switch jump, and can tune up the setting of switch definite value this moment.D, the loosening switch jump that makes of the fastening terminal of low pressure output switch turnover wiring, processing method is for checking and fastening terminal stud.
If the low pressure output switch is in normal condition, then fault type is the downstream load fault.The concrete reason of downstream load fault comprises that the downstream load accident is closed or load hinders shutdown etc. for some reason, and it is low that these faults all can cause the low-voltage distribution system line electricity to flow through, and long distance control system is sent electric current and crossed low alarm.
In one embodiment, because the diversity of fault concrete reason, above-mentioned low-voltage distribution system fault monitoring method also comprises the step that fault type information is sent to default object.Default object is generally the detection maintenance personal that can process dependent failure, after judging fault type, fault type information is sent to default personnel, the very first time notifies it to go corresponding fault scene to overhaul, production line is resumed production fast, reduce the loss that production line stops and brings.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.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 (6)
1. a low-voltage distribution system fault monitoring method is characterized in that, may further comprise the steps:
The low pressure output switch is monitored;
Obtain electric current and cross the state information of described low pressure output switch when hanging down alarm;
Determine the fault type of low-voltage distribution system according to the state information of described low pressure output switch.
2. low-voltage distribution system fault monitoring method according to claim 1 is characterized in that, the described step that the low pressure output switch is monitored is specially: described low pressure output switch shares the escape warning device of uninterrupted power supply master switch;
Described when obtaining electric current and crossing low alarm the step of the state of described low pressure output switch be specially:
Obtain electric current and cross the state information of the escape warning device of described uninterrupted power supply master switch when hanging down alarm;
The state information of described low pressure output switch when obtaining alarm according to the state information of described escape warning device.
3. low-voltage distribution system fault monitoring method according to claim 2, it is characterized in that, the step of the state information of described low pressure output switch was when described state information according to described escape warning device obtained alarm: if described escape warning device gives the alarm, then described low pressure output switch is in the escape state; If described escape warning device no alarms and no surprises, then described low pressure output switch is in normal condition.
4. low-voltage distribution system fault monitoring method according to claim 3, it is characterized in that, described state information according to described low pressure output switch determines that the step of the fault type of low-voltage distribution system is: if described low pressure output switch is in the 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 the downstream load fault.
5. low-voltage distribution system fault monitoring method according to claim 1 is characterized in that, also comprises step:
Described fault type information is sent to default object.
6. low-voltage distribution system fault monitoring method according to claim 2, it is characterized in that, the method that described low pressure output switch and described uninterrupted power supply master switch share the escape warning device is: the escape state of described low pressure output switch is parallel on the alarm condition point of escape warning device of described uninterrupted power supply master switch.
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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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| CN201210101788.6A CN103368149B (en) | 2012-04-09 | 2012-04-09 | Low-voltage distribution system fault monitoring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297140A (en) * | 2019-06-28 | 2019-10-01 | 北京机械设备研究所 | A kind of failure prediction method and device of distribution system |
| CN115765135A (en) * | 2022-11-10 | 2023-03-07 | 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 |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110297140A (en) * | 2019-06-28 | 2019-10-01 | 北京机械设备研究所 | A kind of failure prediction method and device of distribution system |
| CN115765135A (en) * | 2022-11-10 | 2023-03-07 | 大庆恒驰电气有限公司 | Intelligent UPS energy storage 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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| CN103368149B (en) | 2016-03-09 |
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