CN109115529A - A kind of health detecting method and its device for diesel generating set equipment - Google Patents
A kind of health detecting method and its device for diesel generating set equipment Download PDFInfo
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- CN109115529A CN109115529A CN201710479303.XA CN201710479303A CN109115529A CN 109115529 A CN109115529 A CN 109115529A CN 201710479303 A CN201710479303 A CN 201710479303A CN 109115529 A CN109115529 A CN 109115529A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
A kind of health detecting method (100) for diesel generating set equipment, comprising the following steps: obtain the multiple characteristic parameters (101) for being used for the diesel generating set equipment；(102) are normalized to the characteristic parameter of the acquisition；Processing (103) are weighted to the characteristic parameter through normalized；It is summed (104) to the characteristic parameter of the weighted processing, to obtain the health index for being used for the diesel generating set equipment.
Description
Technical field
The present invention relates to detection technique, more particularly to a kind of health detecting method for diesel generating set equipment and
Its device.
Background technique
Diesel generating set is financial system large-scale data center, mobile communcations system, weapon system-of-systems and fire-fighting system
The important emergency electric power equipment of system, has become the necessary equipment of infrastructure and engineering construction.Diesel generating set mainly by
Diesel engine, alternating current generator, generator set controller, chassis and connector composition, are typical electromechanical automatic complete set of equipments.
Equipment health detection is to measure the complicated electromechanical equipment general level of the health, ensures the reliable start and stop of complete set of equipments and stable operation, ensures electricity
Power supply, lifting means regulatory level and prevention apparatus potential risk forward-looking technology.
Currently, not yet there is the equipment health detection technology for diesel generating set, most technical research are remained in
Unit running protection and evaluation phase mainly include both direction: on the one hand, the failure report based on generator set controller data sensor
Alert and protection, the technology are more mature and universal；In addition there are the equipment dependability measurement based on static data statistics is based on
All kinds of relay protection software and hardware management and control measures and the online frequency characteristic of generating set of architecture electric design specification.To sum up institute
It states, there is not yet the online health detection technology of more mature unit equipment.
Deficiency present in the running protection and assessment technique of domestic and international diesel generating set essentially consists at present:
Fault alarm and the protection of controller are relied on, controller directly acquires engine and generator operation by sensor
Status data is shut down upper and lower by warning or alarm that each set state feature physical quantity is arranged in controller
Limit.It determines the range of operation of physical quantity, is shut down beyond after range of operation, then providing warning prompt or alarming.The technology stops
In the error protection stage, it can not effectively reflect the equipment health degree of unit；
Diesel generating set degree of reiability technology lacks online time variation.Existing unit reliability measurement is based on hair
The static reliability numerical value of main components such as motivation, generator, control cabinet, voltage regulator (AVR), generator protection controller
Product does not have real-time online calculating and time-varying characteristics, is unable to satisfy the real-time of large-sized diesel Generating Unit Operation Reliability measurement
Technical requirements.
Summary of the invention
The present invention proposes a kind of health detecting method for diesel generating set equipment, comprising the following steps:
Obtain the multiple characteristic parameters for being used for the diesel generating set equipment；
The characteristic parameter of the acquisition is normalized；
Processing is weighted to the characteristic parameter through normalized；
It sums to the characteristic parameter of the weighted processing, to obtain for the diesel generating set equipment
Health index.
Inventive conception is that by diesel generating set real-time detection to multiple characteristic parameters in real time obtain
It takes, then it is normalized, the effect of normalized is to eliminate the influence of physics dimension.Then, Ge Gete
The weight for levying influence of the parameter in terms of the health to diesel generating set equipment is different, therefore is weighted then to it
The mode of summation can obtain the health index than more objective unit equipment.
Advantageously, after being weighted to characteristic parameter, it is handled by radar map.By radar map to spy
The visable representation for levying parameter, can intuitively provide the judgement of the health index of diesel generating set equipment very much.
Advantageously, each characteristic parameter after the normalized step is compared with corresponding first threshold range
Compared with if be located at except the first threshold range, it is concluded that the diesel generating set equipment is unhealthy.
Advantageously, if each characteristic parameter after the normalized step be located at the first threshold range it
It is interior, then by it respectively compared with second threshold range, if be located at except the second threshold range, it is concluded that the bavin
Oily generator set device inferior health, otherwise, it is concluded that the diesel generating set is healthy.
Advantageously, the first threshold range includes corresponding first upper threshold value and the first lower threshold value.
Advantageously, the second threshold range includes corresponding second upper threshold value and the second lower threshold value.
It advantageously, further include that the health detection result is shown by corresponding display technology.
Advantageously, the health detection result display include display handle through radar map characteristic parameter, it is described accordingly
First threshold range and second threshold range and monitoring index.
It is according to the advantages of health detecting method proposed by the present invention for diesel generating set equipment:
Concept by introducing health index carries out health evaluating to the diesel generating set of on-line operation.Traditional assessment
Method is often assessed compared with respective threshold such as alarming value just for single feature physical quantity, such as that is
It is usually intended to that unit operation is only just alarmed and stopped when a certain characteristic parameter is more than alarming value, this assessment is quite thick
It is omiting and not accurate enough.It can be real-time, quasi- by the health index concept proposed according to detection method proposed by the present invention
Comprehensively assess really and from many aspects the health status for calculating diesel generating set；It can also realize in real time to user simultaneously
Show health index value and configuration effect of visualization.User is substantially without specific, the professional technological know-how for grasping unit, just
The health degree of unit can be understood in real time；
In addition, the on-line operation condition evaluation of the most of diesel generating set of tradition is being directed to individual system characteristic parameter
The relationship between each physical quantity is not considered when the assessment of (mainly physical quantity).One reality of the method according to the invention
It applies in scheme and influencing each other between characteristic parameter i.e. physical quantity is reflected by radar map, comprehensively consider several main feature objects
Assessment of the reason amount to on-line operation unit, Consideration more fully, can more reflect actual operation conditions.In addition, passing through thunder
It individually shows that objective interface is vivid, clear understandable up to figure is such, extraordinary Evaluated effect can be reached.
In addition, the present invention also proposes a kind of health test apparatus for diesel generating set equipment, comprising: obtain single
Member, for obtaining the multiple characteristic parameters for being used for the diesel generating set equipment；Normalization unit, for the acquisition
Characteristic parameter is normalized；Weighted units, for being weighted processing to the characteristic parameter through normalized；
Summation unit sums to the characteristic parameter of the weighted processing, is used for the diesel generating set equipment to obtain
Health index.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.It should be evident that the accompanying drawings in the following description only describes
A part of the embodiments of the present invention.These attached drawings are not restrictive for the present invention, but are served illustrative.
Wherein:
Fig. 1 shows the flow chart according to the health detecting method proposed by the present invention for diesel generating set equipment；
Fig. 2 shows the radar maps of the raw value of an illustrative diesel generating set equipment state；
Fig. 3 shows the radar map of the normalization numerical value of an illustrative diesel generating set equipment state；
Fig. 4 shows the phase run according to the health detecting method proposed by the present invention for diesel generating set equipment
Answer the block diagram of device.
Specific embodiment
Fig. 1 shows the flow chart according to the health detecting method 100 proposed by the present invention for diesel generating set equipment.
Method 100 generally includes following steps: obtaining the multiple characteristic parameters 101 for being used for the generator set device；To the acquisition
Characteristic parameter be normalized 102；Processing 103 is weighted to the characteristic parameter through normalized；To institute
The characteristic parameter for stating weighted processing carries out summation 104, to obtain the health index for being used for the generator set device.
Below according to a diesel generating set equipment health detecting method specific embodiment to proposed by the present invention
Method is illustrated.
In illustrative diesel generating set, including multiple operating status characteristic parameters (i.e. physical quantity), including
Engine measuring parameter have: engine cool water level, engine coolant temperature, lubricating oil pressure, revolving speed, fuel liquid level, electricity
Bottle voltage etc.；Including generator measurement parameter have: generator phase voltage, generator phase voltage, generator phase voltage, hair
Motor line voltage, generator line voltage, generator line voltage, load current, load current, load current, generation frequency, power
Factor, apparent energy, active power and leakage current etc.；Including unit measurement parameter have: the accumulative total of generating electricity, starting time
It counts, starting success rate, maintenance number, on time maintenance rate and hours of operation.
It extracts 8 important physical amounts in the present embodiment to be illustrated: starting success rate, lubricating oil pressure, coolant water temperature
Degree, fuel liquid level, engine speed, generation frequency, generating voltage, battery voltage.
According to first step 101 proposed by the present invention, above-mentioned 8 for exemplary diesel generator set device are obtained first
A characteristic parameter 101.Expression of above-mentioned 8 characteristic parameters in radar map as shown in Figure 2.
Radar map method can use the quantitative relation of indices in the form expression assessment of figure, and the result of assessment is vivid, straight
It connects, in conjunction with the Mathematical treatment to characteristics of image, can objectively carry out more physical quantity comprehensive assessments.Its basic principle is as follows:
Assuming that the evaluation index that is, characteristic parameter (i.e. physical quantity) of assessment object (being herein diesel generating set equipment)
It is n (in this n=8), traditional radar map method makees a unit circle first, and is divided into 8 fan-shaped regions, with sector
Then radius normalizes index value vector as the corresponding index axis of each index, and round with distance on index axis in proportion
The point of heart certain length is corresponding, is sequentially connected each point on index axis, and the closed polygon of acquisition is the thunder for assessing object
Up to figure.When being assessed using radar map, the general main area using closed polygon, side length the two amounts.It closes polygon
The area of shape is bigger, and assessment result more develops to direction representated by index value, and when area is identical, polygon is closer to circle
(i.e. perimeter is smaller), each index development are more balanced.The area and perimeter for comparing radar map can be with by certain Mathematical treatment
Obtain final assessment result.As shown in Figure 2.
The feature of the Chongqing Cummins Engine of illustrative model NT855-G according to the present embodiment is shown in Fig. 2
Parameter radar map.Wherein, lubricating oil pressure upper limit alarm value is 3.8bar, and lower limit alarming value is 1.03bar；The temperature of cooling water
Upper limit alarm value is 110 degrees Celsius, and lower limit alarming value is 80 degrees Celsius；Fuel liquid level upper limit value is 100%, and lower limit alarming value is
10%；Said upper engine speed limit alarming value is 1650r/min, and lower limit alarming value is 1350r/min；Generation frequency upper limit alarm value
It is 52Hz, lower limit alarming value is 48Hz；Generating voltage upper limit alarm value is 437VAC, and lower limit alarming value is 342VAC；Storage battery electricity
Pressing upper limit alarm value is 29.5VDC, and lower limit alarming value is 22VDC.Wherein, the ideal operating value of each parameter shown in Figure 2 point
Not are as follows: starting success rate is 100%, and lubricating oil pressure 2.5bar, cooling water temperature is 90 degrees Celsius, and fuel liquid level is
90%, engine speed 1500r/min, generation frequency 50Hz, generating voltage 380VAC, battery voltage 24VDC.This
Outside, the actual value of above-mentioned 8 characteristic parameters obtained herein is also shown in Fig. 2: starting success rate is 100%, lubricating oil pressure
For 2.6bar, cooling water temperature is 92 degrees Celsius, fuel liquid level 80%, engine speed 1520r/min, and generation frequency is
50.1Hz, generating voltage 381VAC, battery voltage 26VDC.It indicates that each point of actual value links together, forms one
Polygon.
Furthermore it is also shown in Fig. 2 including the upper limit alarm value and lower limit alarming value as the first upper threshold value and the first lower threshold value
First threshold range and include of the upper limit warning value and lower limit warning value as the second upper threshold value and the second lower threshold value
Two threshold ranges.In general, if characteristic parameter is located at except first threshold range, it is concluded that above-mentioned diesel generating set equipment
It is unhealthy；If characteristic parameter is located within first threshold range but except second threshold range, it is concluded that generator
Otherwise group equipment inferior health obtains generating set health.
Above-mentioned radar map method will be changed according to the exemplary embodiment of health detecting method proposed by the present invention herein
Into.It is herein exactly that 102 are normalized to eight characteristic parameters of the acquisition after above-mentioned first step 101.Tool
For body, by 8 characteristic parameter v=(v of diesel generating set1,v2,v3,v4,v5,v6,v7,v8) it is normalized to same dimension,
Obtain v'=(v1',v'2,v'3,v'4,v'5,v'6,v'7,v'8)。
Normalization is a kind of dimensionless processing means, and the absolute value of physical system numerical value is made to become certain relative value relationship,
It is simplified calculating, reduces the effective way of magnitude.Feature physical quantity extracted is normalized at this, by these objects
Reason amount is converted into nondimensional parameter, is convenient for the calculating of subsequent healthy coefficient.Calculation formula is as follows:
Qi=(Qreal-Qmin)/(Qmax-Qmin) (1)
Wherein, QiIt is the value after the normalization of ith feature physical quantity.For example, engine coolant temperature value is from lowest temperature
80 DEG C to 110 DEG C of maximum temperature of degree is normalized to 0 to 1, and water temperature is converted to nondimensional relative value, when actual water temperature value is
At 95 DEG C, normalized parameter value is 0.5.
Then, processing is weighted to the characteristic parameter through normalized in step 103.
In this embodiment specifically, each index of power quality is assigned with the taxes such as expert graded power method
Power, so that obtaining weight is α=(α1,α2,α3,α4,α5,α6,α7,α8).According to the present embodiment herein referring to GJB450-1988 " dress
The standby general outline of reliability developed with production " regulation, the cumulative failure probability F (t) in the essential characteristic parameter of reliability
As equipment fault data statistics foundation, under the premise of ensuring weight summation is 1, by the corresponding accumulative failure of feature physical quantity
Weight coefficient is calculated in rate Linear Mapping.Certainly, it is also admissible for obtaining weight in other any suitable modes.
Normalized characteristic parameter is equally as above indicated in radar map, equiangularly shows principle, draw through returning
The radar map of one characteristic parameter changed is as shown in Figure 3.Wherein, according to failure rate Linear Mapping method, above-mentioned 8 features are joined
It measures calculated weight coefficient and is respectively as follows: 0.12,0.15,0.1,0.08,0.05,0.1,0.2,0.2.
Finally, at step 104, carrying out summation 104 to the characteristic parameter of the weighted processing, institute is used for obtain
State the health index of diesel generating set equipment.In the present embodiment specifically, it is measured by alarm upper lower limit value and unit
Actual value, actual value is normalized, health index formula will be brought into further according to each weight coefficient value, calculated strong
Health index are as follows: 0.92, state instruction is green, and the current status of equipment of the unit is healthy, the polygon of each point connection
It also is located at and illustrates this point also visual in imagely within the scope of second threshold.
In addition, the present invention also propose it is a kind of for realizing the above-mentioned health detecting method for diesel generating set equipment
Related device.
Fig. 4 is shown according to proposed by the present invention for the corresponding of diesel generating set equipment health detecting method operation
The block diagram of device 200.
The device 200 includes:
Acquiring unit 201, for obtaining the multiple characteristic parameters for being used for the diesel generating set equipment.The acquiring unit
It is configured to include the acquisition of corresponding data and transmitting device, such as various sensors and corresponding signal processing apparatus,
Filter, Special electric device and IC apparatus etc..
Normalization unit 202, for the characteristic parameter of the acquisition to be normalized.The normalization unit can be with
It is realized by way of software and/or hardware, for example is embodied as various software modules or dedicated arithmetic unit or integrated circuit
Or a part therein.
Weighted units 203, for being weighted processing to the characteristic parameter through normalized.The weighted units are same
Sample can be realized by way of software and/or hardware, for example be embodied as various software modules or dedicated arithmetic unit or collection
At circuit or a part therein.
Summation unit 204 sums to the characteristic parameter of the weighted processing, sends out to obtain for the diesel oil
The health index of electric unit equipment.The summation unit is configured to dedicated adder or specific data processor or control
Device or component part therein, same summation unit can also be realized in the form of software.
Above description to the embodiment proposed, enables those skilled in the art to implement or use the present invention.
It should be appreciated that the feature disclosed in above embodiments individually or can be tied mutually other than the situation for having special instruction
Ground is closed to use.Various modifications to these embodiments will be readily apparent to those skilled in the art, herein
Defined in General Principle can realize in other embodiments without departing from the spirit or scope of the present invention.
Therefore, invention disclosed herein is not limited to disclosed specific embodiment, but is intended to appended right such as and wants
Ask the modification within the spirit and scope of the present invention defined by book.
Claims (9)
1. being used for the health detecting method (100) of diesel generating set equipment, comprising the following steps:
Obtain the multiple characteristic parameters (101) for being used for the diesel generating set equipment；
(102) are normalized to the characteristic parameter of the acquisition；
Processing (103) are weighted to the characteristic parameter through normalized；
It is summed (104) to the characteristic parameter of the weighted processing, is used for the diesel generating set equipment to obtain
Health index.
2. according to the method for claim 1 (100), which is characterized in that it is described to characteristic parameter be weighted (103) it
Afterwards, it is handled by radar map.
3. method according to claim 1 or 2 (100), which is characterized in that the normalized step (102) it
Each characteristic parameter afterwards is compared with corresponding first threshold range, if be located at except the first threshold range,
Show that the diesel generating set equipment is unhealthy.
4. according to the method for claim 3 (100), which is characterized in that if after the normalized step (102)
Each characteristic parameter be located within the first threshold range, then by it respectively compared with second threshold range, if position
In except the second threshold range, it is concluded that the diesel generating set equipment inferior health, otherwise, it is concluded that the diesel oil
Generating set health.
5. according to the method for claim 4 (100), which is characterized in that the first threshold range includes corresponding first
Upper threshold value and the first lower threshold value.
6. according to the method for claim 5 (100), which is characterized in that the second threshold range includes corresponding second
Upper threshold value and the second lower threshold value.
7. according to the method for claim 6 (100), which is characterized in that further include shown by corresponding display technology described in
Health detection result.
8. according to the method for claim 7 (100), which is characterized in that the display of the health detection result includes display
Characteristic parameter, corresponding first threshold range and the second threshold range and monitoring index handled through radar map.
9. being used for the health test apparatus (200) of diesel generating set equipment, comprising:
Acquiring unit (201), for obtaining the multiple characteristic parameters for being used for the diesel generating set equipment；
Normalization unit (202), for the characteristic parameter of the acquisition to be normalized；
Weighted units (203), for being weighted processing to the characteristic parameter through normalized；
Summation unit (204) sums to the characteristic parameter of the weighted processing, is used for the diesel generation to obtain
The health index of unit equipment.
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