CN104111422A - Parallel running fault detection method for double machine sets - Google Patents
Parallel running fault detection method for double machine sets Download PDFInfo
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- CN104111422A CN104111422A CN201410358016.XA CN201410358016A CN104111422A CN 104111422 A CN104111422 A CN 104111422A CN 201410358016 A CN201410358016 A CN 201410358016A CN 104111422 A CN104111422 A CN 104111422A
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Abstract
The invention discloses a parallel running fault detection method for double machine sets. The parallel running fault detection method for double machine sets includes that building a parallel running fault detection system for double machine sets, enabling a power gathering module (1), a rotating speed gathering module (2) and a voltage gathering module (3) to respectively gather power, rotating speeds and voltage parameters, sending to a fault detection module (4) through a lead, enabling the fault detection module (4) to detect whether there is a faulted machine set according to the parameters and locate the faulted machine set, and sending signals to a fault processing module (5) to execute faulted machine set processing signals. The parallel running fault detection method for double machine sets precisely detects the fault and meets quick and precise faulted machine set judging requirements in the parallel running of double machine sets.
Description
Technical field
The present invention relates to the fault detection method in a kind of diesel generator set operation troubles detection method, particularly a kind of two-shipper sets in parallel operation.
Background technology
Electric power system is the important factor in order of Operational Effectiveness of Weapon Equipment.In order to improve the mission reliability of electric power system, for important weaponry, adopt the power supply mode of two diesel generator set parallel redundancy power supplies.This power supply mode is based on two diesel generator set parallel operations, if wherein a unit breaks down, two-shipper sets in parallel operation fault detection system will be at once by the power-off of fault unit.This system has a set of fault detection method; according to original traditional detection method, be mainly according to contrary merit unit, to be the principle of fault unit; easily like this cause erroneous judgement disconnected; not only can not improve the reliability of electric power system; also can make two-shipper sets in parallel operation fault detection system by the unit power-off of normal operation, and whole power loads be transferred on the unit of fault of existence, the lighter causes weaponry to be shut down; severe one can cause weaponry paralysis, cannot complete training or combat duty.
Summary of the invention
The object of the invention is to provide the fault detection method in a kind of two-shipper sets in parallel operation, solves traditional fault detection method erroneous judgement in two-shipper sets in parallel operation and breaks, and causes the failed problem of powering.
A fault detection method in two-shipper sets in parallel operation, concrete steps are:
The first step is built two-shipper sets in parallel operation fault detection system
Two-shipper sets in parallel operation fault detection system, comprising: power collection module, rotating speed acquisition module, voltage acquisition module, fault detection module and fault processing module; Power collection module is used for gathering power parameter, rotating speed acquisition module is for gathering the parameter of rotating speed, voltage acquisition module is for gathering the parameter of voltage, whether fault detection module is for detection of there is fault unit and locate fault unit, and fault processing module is used for carrying out fault unit processing signals.Power collection module, rotating speed acquisition module and voltage acquisition module are connected by wire with fault detection module respectively, and fault detection module is connected by wire with fault processing module.
Second step power collection module obtains sampled power
Power parameter separately when power collection module gathers respectively two diesel-driven generator sets in parallel operation.When two diesel generator set bringing onto load stable operation, wherein a unit breaks down the contrary merit of generation.Therefore, power collection module imports the power parameter of acquisition into fault detection module, when fault detection module detects the unit that produces contrary merit, determines and has fault unit.
The 3rd step rotating speed acquisition module and voltage acquisition module obtain sampling rotating speed and voltage
When fault detection module, determine and exist after fault unit, rotating speed acquisition module and voltage acquisition module start to gather respectively rotating speed, the voltage of two diesel generator sets and import fault detection module into compare.When a unit breaks down, two-shipper group in parallel is under the common effect of electron speed regulator, voltage regulator, by the phenomenon that occurs four kinds: rotating speed higher than rated speed, rotating speed lower than rated speed, voltage higher than rated voltage, voltage lower than rated voltage.Therefore, by fault detection module, rotating speed, voltage are compared, determine the phenomenon type that fault causes.
The 4th step fault detection module location fault unit
Fault detection module is according to the rotating speed that detects, voltage condition location fault unit, when contrary merit appears in a unit, if generating unit speed higher than rated speed or generator output voltage lower than rated voltage, occur that the unit of contrary merit is fault unit; If generating unit speed higher than rated voltage, does not occur that contrary merit unit is fault unit lower than rated speed or generator output voltage.Therefore, fault detection module is according to locating fault unit shown in table 1, and imports testing result into fault processing module.
Fault detect is with reference in table 1 shown in situation.
Table 1
The 5th step fault processing module is carried out fault handling signal
The signal that fault processing module imports into according to fault detection module sends power-off signal to fault unit, and fault unit is excised from parallel running state.
So far, complete the fault detect in two-shipper sets in parallel operation.
By this method, fault is accurately detected, meet the needs of judging fast and accurately fault unit in two-shipper sets in parallel operation.
Accompanying drawing explanation
The structural representation of two-shipper sets in parallel operation fault detection system in fault detection method in a kind of two-shipper sets in parallel operation of Fig. 1.
1. power collection module 2. rotating speed acquisition module 3. voltage acquisition module 4. fault detection module 5. fault processing modules.
Embodiment
A fault detection method in two-shipper sets in parallel operation, concrete steps are:
The first step is built two-shipper sets in parallel operation fault detection system
Two-shipper sets in parallel operation fault detection system, comprising: power collection module 1, rotating speed acquisition module 2, voltage acquisition module 3, fault detection module 4, fault processing module 5; Power collection module 1 is for gathering power parameter, rotating speed acquisition module 2 for the parameter, voltage acquisition module 3 that gather rotating speed for gathering the parameter of voltage, three modules are connected with fault detection module 4 wires respectively, whether fault detection module 4 is for detection of having fault unit and locate fault unit, fault detection module 4 is connected with fault processing module 5 wires, and fault processing module 5 is for carrying out fault unit processing signals.
Second step power collection module 1 obtains sampled power
Power parameter separately when power collection module 1 gathers respectively two diesel-driven generator sets in parallel operation.When two diesel generator set bringing onto load stable operation, wherein a unit breaks down the contrary merit of generation.Therefore, power collection module 1 imports acquisition power parameter into fault detection module 4, if when fault detection module 4 detects the contrary merit of unit one generation, determine and have fault unit.
The 3rd step rotating speed acquisition module 2 and voltage acquisition module 3 obtain sampling rotating speed, voltage
When fault detection module 4, determine and exist after fault unit, rotating speed acquisition module 2 and voltage acquisition module 3 start to gather respectively rotating speed, the voltage of two units and import fault detection module 4 into compare.When a unit breaks down, two-shipper group in parallel will be under the common effect of electron speed regulator, voltage regulator, by the phenomenon that there will be four kinds: rotating speed higher than rated speed, rotating speed lower than rated speed, voltage higher than rated voltage, voltage lower than rated voltage.By fault detection module 4 pairs of rotating speeds, voltages, compare, the rotating speed more than failure judgement has caused in four kinds of phenomenons is higher than rated speed phenomenon.
The 4th step fault detection module 4 location fault units
Fault detection module 4 is according to the rotating speed detecting, voltage condition location fault unit, and when contrary merit appears in unit one, and generating unit speed turns higher than specified, and unit two is fault unit.Fault detection module 4 is according to locating fault unit shown in table 1, and imports testing result into fault processing module 5.
Fault detect is with reference in table 1 shown in situation.
Table 1
The 5th step fault processing module 5 is carried out fault handling signal
The signal that fault processing module 5 imports into according to fault detection module 4 sends power-off signal to unit two, and unit two is excised from parallel running state.
So far, complete the fault detect in two-shipper sets in parallel operation.
Claims (1)
1. the fault detection method in two-shipper sets in parallel operation, is characterized in that concrete steps are:
The first step is built two-shipper sets in parallel operation fault detection system
Two-shipper sets in parallel operation fault detection system, comprising: power collection module (1), rotating speed acquisition module (2), voltage acquisition module (3), fault detection module (4) and fault processing module (5); Power collection module (1) is for gathering power parameter, rotating speed acquisition module (2) is for gathering the parameter of rotating speed, voltage acquisition module (3) is for gathering the parameter of voltage, whether fault detection module (4) is for detection of there is fault unit and locate fault unit, and fault processing module (5) is for carrying out fault unit processing signals; Power collection module (1), rotating speed acquisition module (2) and voltage acquisition module (3) are connected by wire with fault detection module (4) respectively, and fault detection module (4) is connected by wire with fault processing module (5);
Second step power collection module (1) obtains sampled power
Power parameter separately when power collection module (1) gathers respectively two diesel-driven generator sets in parallel operation; When two diesel generator set bringing onto load stable operation, wherein a unit breaks down the contrary merit of generation; Therefore, power collection module (1) imports the power parameter of acquisition into fault detection module (4), when fault detection module (4) detects the unit that produces contrary merit, determines and has fault unit;
The 3rd step rotating speed acquisition module (2) and voltage acquisition module (3) obtain sampling rotating speed and voltage
When fault detection module (4), determine and exist after fault unit, rotating speed acquisition module (2) and voltage acquisition module (3) start to gather respectively rotating speed, the voltage of two diesel generator sets and import fault detection module (4) into compare; When a unit breaks down, under the common effect of electron speed regulator, voltage regulator, will there are four kinds of phenomenons in two-shipper group in parallel: rotating speed higher than rated speed, rotating speed lower than rated speed, voltage higher than rated voltage, voltage lower than rated voltage; Therefore, by fault detection module (4), rotating speed, voltage are compared, determine the phenomenon type that fault causes;
The 4th step fault detection module (4) location fault unit
Fault detection module (4) is according to the rotating speed that detects, voltage condition location fault unit, when contrary merit appears in a unit, if generating unit speed higher than rated speed or generator output voltage lower than rated voltage, occur that the unit of contrary merit is fault unit; If generating unit speed higher than rated voltage, does not occur that contrary merit unit is fault unit lower than rated speed or generator output voltage; Therefore, fault detection module (4) is according to locating fault unit shown in table 1, and imports testing result into fault processing module (5);
Fault detect is with reference in table 1 shown in situation;
Table 1
The 5th step fault processing module (5) is carried out fault handling signal
The signal that fault processing module (5) imports into according to fault detection module (4) sends power-off signal to fault unit, and fault unit is excised from parallel running state;
So far, complete the fault detect in two-shipper sets in parallel operation.
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| CN102135600A (en) * | 2011-01-28 | 2011-07-27 | 中国人民解放军海军潜艇学院 | Fault detection device and method of asynchronous motor |
| CN102520352A (en) * | 2011-12-02 | 2012-06-27 | 中国人民解放军海军工程大学 | Brushless alternating current (AC) generator failure diagnosis instrument |
| CN203069211U (en) * | 2013-02-28 | 2013-07-17 | 成都信息工程学院 | Online detection device for operation state of generator |
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2014
- 2014-07-25 CN CN201410358016.XA patent/CN104111422A/en active Pending
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| EP1075071A3 (en) * | 1999-08-02 | 2002-12-11 | Ford Motor Company | Fault detection in a motor vehicle charging system |
| CN201345551Y (en) * | 2008-12-25 | 2009-11-11 | 广东康菱动力科技有限公司 | Parallel control system of integrated diesel generating set of relay |
| CN102135600A (en) * | 2011-01-28 | 2011-07-27 | 中国人民解放军海军潜艇学院 | Fault detection device and method of asynchronous motor |
| CN102520352A (en) * | 2011-12-02 | 2012-06-27 | 中国人民解放军海军工程大学 | Brushless alternating current (AC) generator failure diagnosis instrument |
| CN203069211U (en) * | 2013-02-28 | 2013-07-17 | 成都信息工程学院 | Online detection device for operation state of generator |
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Application publication date: 20141022 |