CN108169597B - Method for evaluating loss state of electric equipment - Google Patents
Method for evaluating loss state of electric equipment Download PDFInfo
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- CN108169597B CN108169597B CN201711441626.6A CN201711441626A CN108169597B CN 108169597 B CN108169597 B CN 108169597B CN 201711441626 A CN201711441626 A CN 201711441626A CN 108169597 B CN108169597 B CN 108169597B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 230000002159 abnormal effect Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 16
- 239000003814 drug Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
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- 230000035945 sensitivity Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 2
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention relates to a method for evaluating the loss state of electric equipment, in particular to a method for conveniently and quickly evaluating the loss state of the electric equipment, which comprises the following steps: 1) the current path of the electric equipment is connected with an electric energy meter in series; 2) calculating the increasing rate of the power consumption; 3) calculating the predicted power consumption by using the power consumption increasing rate; 4) acquiring actual power consumption, comparing the actual power consumption with the predicted power consumption, and if the actual power consumption is less than or equal to the predicted power consumption, keeping in a normal equipment loss state, and if the actual power consumption is greater than the predicted power consumption, keeping in an abnormal equipment loss state; electric energy meter department sets up the safety cover, and the safety cover all includes: a cap member having a cap top and a sidewall flange with a reverse portion formed thereon; and the blocking part is fixed in the cap-shaped component. The method for evaluating the loss state of the electric equipment can facilitate the user to evaluate the loss state of the electric equipment in time, thereby ensuring the life and property safety.
Description
Technical Field
The invention relates to a method for evaluating the loss state of electric equipment, in particular to a method for evaluating the loss state of the electric equipment, which can be used for evaluating the loss state of the electric equipment conveniently, quickly and extremely sensitively.
Background
The various device life cycles refer to the total length of time from when the device is initially placed into service until it is finally removed from service due to complete loss of device functionality. One important metric that measures the ultimate decommissioning of a device is reliability. The lifetime of the equipment is often an important decision basis for updating and rebuilding the equipment. The equipment is generally updated and modified to improve the product quality, promote the product upgrading and save energy. Here, the equipment update may be performed from the viewpoint of the economic life of the equipment, and the equipment modification may be performed for the purpose of extending the technical life and the economic life of the equipment.
However, each device is purchased with different frequency and time, and thus has different service life. However, since there are many states and components of the machine, a professional is generally required to determine the loss of the machine so as to replace the machine in time, and there is no simple method for the user to know the loss of the machine. The safety of the electric equipment needs to be particularly noticed, and if an accident happens, the dangerous conditions such as fire and even explosion may be affected, so how to monitor the loss state of the electric equipment in time is a problem that users need to solve urgently at present.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide a method for evaluating a loss state of an electric device, which can perform the loss state of the electric device conveniently and rapidly with high sensitivity.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a method for evaluating a state of wear of a powered device, comprising:
1) an electric energy meter is connected in series with a current path of each electric device, a first electric quantity a of the electric device in a first time period and a second electric quantity b of the electric device in a second time period are obtained by the electric energy meter, the second time period is the time after the first time period, the second time period is adjacent to the first time period, the first time period and the second time period are both continuous operation time, and the time length c is equal;
2) calculating a power consumption increasing rate d of the power consumption equipment in a time period by using the first power consumption and the second power consumption, wherein d is (b-a)/a;
3) calculating the expected power consumption of the electric equipment in each time period of a plurality of continuous time periods to be generated by utilizing the power consumption increasing rate, wherein the plurality of time periods are adjacent time periods after the second time period;
4) acquiring the actual power consumption of each electric device in each time period in the plurality of time periods through an electric energy meter corresponding to each electric device, comparing the actual power consumption of the electric device in each time period with the corresponding predicted power consumption one by one, if the actual power consumption is less than or equal to the predicted power consumption, considering that the electric device is in a normal device loss state, and if the actual power consumption is greater than the predicted power consumption and the difference exceeds a predicted power consumption difference threshold value, considering that the electric device is in an abnormal device loss state;
wherein, the electric energy meter sets up with every consumer one-to-one, just the leading flank department of electric energy meter is provided with a plurality of safety covers, this a plurality of safety cover parallel arrangement, the safety cover perpendicular to the leading flank of electric energy meter installs above that, every the safety cover all includes:
the cap-shaped component is provided with a cap top and a side wall flange, the cap top is connected to the electric energy meter, a reverse part is formed on the side wall flange, and the reverse part is clamped on the side surface of the electric energy meter;
the blocking part is fixed in the cap-shaped component and closes the opening of the cap-shaped component, and a plurality of recesses are formed in the blocking part and face the inner direction of the cap-shaped component.
Preferably, in the method for evaluating the loss state of the electric device, the first time period, the second time period and each of the plurality of time periods have a duration of 30 days.
Preferably, in the method for evaluating the loss state of the electric device, in step 3), the plurality of time periods do not exceed 10 time periods.
Preferably, in the method for evaluating the loss state of the electric device, in step 3), if the plurality of time periods exceed 10 time periods, the step proceeds to step 5);
and 5), taking the average electricity consumption of each time period of the previous 13 time periods as a new first electricity consumption, taking the electricity consumption of the 14 th time period as a second electricity consumption, and re-entering the step 1).
Preferably, in the method for evaluating the loss state of the electric equipment, in the step 3), the predicted electric quantity in the later time period is calculated based on the predicted electric quantity in the previous time period and the electric quantity increase rate.
Preferably, in the method for evaluating a loss state of an electric device, in the step 4), the predicted power consumption difference threshold is 1% to 5% of the predicted power consumption.
Preferably, in the method for evaluating a state of wear of electric devices, the electric devices include a centrifuge, a washing machine, a refrigerator, an air conditioner, a medicine cabinet, a water bath, a homogenizer, a vibrator, and a stirrer.
The invention at least comprises the following beneficial effects:
the invention discloses a method for evaluating the loss state of electric equipment, which comprises the following steps: 1) an electric energy meter is connected in series with a current path of each electric device, the electric energy meter is utilized to obtain first electric quantity a and second electric quantity b of the electric device in a first time period and a second time period, the second time period is the time after the first time period, the second time period is adjacent to the first time period so as to know and record the power utilization condition of the electric device in time, the first time period and the second time period are both continuous time, and the time length c is equal so as to facilitate later-stage calculation, so that the calculation is simple and rapid; 2) calculating a power consumption increasing rate d of the power consumption equipment in a time period by using the first power consumption and the second power consumption, wherein d is (b-a)/a; 3) calculating the expected power consumption of the electric equipment in each time period of a plurality of continuous time periods to be generated by utilizing the power consumption increasing rate, wherein the plurality of time periods are adjacent time periods after the second time period, and firstly calculating the expected power consumption so as to be compared with the actual power consumption; 4) the electric energy meter that corresponds through every consumer obtain this consumer in the actual power consumption of every time quantum in a plurality of time quantum carries out the one-to-one comparison with the actual power consumption of this consumer in every time quantum and the expected power consumption that corresponds, if actual power consumption is less than or equal to expected power consumption, then think the consumer is in normal equipment loss state, if actual power consumption is greater than expected power consumption, and the difference surpasss expected power consumption difference threshold value, then think the consumer is in abnormal equipment loss state. The electric energy meter is arranged in one-to-one correspondence with each electric device, so that the electric energy meter can only measure the power consumption of the electric device, and the measurement error is avoided. The evaluation method has the advantages of high accuracy, high sensitivity and simple calculation mode, and is suitable for popularization and application. Just the leading flank department of electric energy meter is provided with a plurality of safety covers, these a plurality of safety cover parallel arrangement, the safety cover perpendicular to the leading flank of electric energy meter installs above that, every the safety cover all includes: the cap-shaped component is provided with a cap top and a side wall flange, the cap top is connected to the electric energy meter and protects the front side face of the electric energy meter from being impacted, a reverse part is formed on the side wall flange and clamped on the side face of the electric energy meter, and two side faces of the electric energy meter are protected from being impacted; the blocking part is fixed in the cap-shaped component and closes the opening of the cap-shaped component, and a plurality of recesses are formed on the blocking part 3 and face the inner direction of the cap-shaped component to protect the central part of the front side surface of the electric energy meter from being impacted. Because the environment that consumer located is generally comparatively abominable, set up the safety cover and can make the electric energy meter receive striking etc. and avoid damaging. Even if there is the striking, the safety cover also can absorb the impact energy, avoids damaging the electric energy meter.
According to the method, the user can effectively evaluate the loss state of the electric equipment in time, so that the stability and the safety of the electric equipment are ensured, and the life and property safety of the user is ensured.
In addition, the invention takes the electricity consumption of one month as a standard, the time is too short, the possible loss is not obvious, the electricity consumption change is not different, and the time is too long, so that the results of insensitive state evaluation, larger error and the like are easily caused, therefore, 30 days are selected for calculation and statistics, and the sensitivity of the evaluation method is high. In the present invention, the plurality of time periods does not exceed 10 time periods. Therefore, the method is suitable for detecting the loss condition of the electric equipment within one year, has short period and less data to be processed, and is convenient to calculate.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a flow chart of a method for evaluating a wear state of a powered device according to the present invention;
fig. 2 is a schematic cross-sectional view of the protective cover according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1, a method for evaluating a power consumption device loss state of the present invention includes the following steps: 1) an electric energy meter is connected in series with a current path of each electric device, the electric energy meter is utilized to obtain first electric quantity a of the electric device in a first time period and second electric quantity b of the electric device in a second time period, the second time period is the time after the first time period, the second time period is adjacent to the first time period so as to know and record the power utilization condition of the electric device in time, the first time period and the second time period are both continuous time, and the time length c is equal so as to facilitate later-stage calculation, so that the calculation is simple and rapid; 2) calculating a power consumption increasing rate d of the power consumption equipment in a time period by using the first power consumption and the second power consumption, wherein d is (b-a)/a; 3) calculating the expected power consumption of the electric equipment in each time period of a plurality of continuous time periods to be generated by utilizing the power consumption increasing rate, wherein the plurality of time periods are adjacent time periods after the second time period, and firstly calculating the expected power consumption so as to be compared with the actual power consumption; 4) the electric energy meter that corresponds through every consumer obtain this consumer in the actual power consumption of every time quantum in a plurality of time quantum carries out the one-to-one comparison with the actual power consumption of this consumer in every time quantum and the expected power consumption that corresponds, if actual power consumption is less than or equal to expected power consumption, then think the consumer is in normal equipment loss state, if actual power consumption is greater than expected power consumption, and the difference surpasss expected power consumption difference threshold value, then think the consumer is in abnormal equipment loss state. The electric energy meter is arranged in one-to-one correspondence with each electric device, so that the electric energy meter can only measure the power consumption of the electric device, and the measurement error is avoided. The evaluation method has the advantages of high accuracy, high sensitivity and simple calculation mode, and is suitable for popularization and application. And, as shown in fig. 2, a plurality of protective covers 1 are arranged at the front side of the electric energy meter, the protective covers are arranged in parallel, the protective cover is perpendicular to the front side of the electric energy meter and is mounted thereon, and each protective cover 1 includes: the cap-shaped component 2 is provided with a cap top part 21 and a side wall flange 22, the cap top part is connected to the electric energy meter and protects the front side surface of the electric energy meter from being impacted, a reverse part 23 is formed on the side wall flange 22, the reverse part 23 is clamped on the side surface of the electric energy meter, and two side surfaces of the electric energy meter are protected from being impacted; and the blocking part 3 is fixed in the cap-shaped component 2 and closes the opening of the cap-shaped component, a plurality of recesses 31 are formed on the blocking part 3, and the recesses 31 face to the inner direction of the cap-shaped component 2 to protect the central part of the front side surface of the electric energy meter from being impacted. Because the environment that consumer located is generally comparatively abominable, set up the safety cover and can make the electric energy meter receive striking etc. and avoid damaging. Even if there is the striking, the safety cover also can absorb the impact energy, avoids damaging the electric energy meter.
According to the method, the user can effectively evaluate the loss state of the electric equipment in time, so that the stability and the safety of the electric equipment are ensured, and the life and property safety of the user is ensured.
According to the method for evaluating the loss state of the electric equipment, the duration of each of the first time period, the second time period and the plurality of time periods is 30 days. The electricity consumption of one month is taken as a standard, the time is too short, the loss is not obvious, the electricity consumption change is not different, and the time is too long, so that the results of insensitive state evaluation, larger error and the like are easily caused, therefore, 30 days are selected for calculation and statistics, and the sensitivity of the evaluation method is high.
In the method for evaluating the loss state of the electric equipment, in the step 3), the plurality of time periods do not exceed 10 time periods. Therefore, the method is suitable for detecting the loss condition of the electric equipment within one year, has short period and less data to be processed, and is convenient to calculate.
In the method for evaluating the loss state of the electric equipment, in the step 3), if the time periods exceed 10 time periods, the step 5) is carried out;
and step 5), taking the average electricity consumption of each time period of the previous 13 time periods as a new first electricity consumption, taking the electricity consumption of the 14 th time period as a second electricity consumption, and re-entering the step 1). The power consumption condition of the power consumption equipment in the last year can be comprehensively considered, and more reliable analysis data can be brought to the loss state evaluation of the next year.
In the method for evaluating the loss state of the electric equipment, in the step 3), the expected power consumption in the later time period is calculated based on the expected power consumption in the previous time period and the power consumption increasing rate. And calculating the power consumption of the next stage according to the previous month power consumption and loss condition of the electric equipment through accumulative calculation.
In the method for evaluating the loss state of the electric equipment, in the step 4), the difference threshold value of the expected power consumption is 1-5% of the expected power consumption. If too large or too small, it will not be evaluated.
The method for evaluating the loss state of the electric equipment comprises a centrifuge, a washing machine, a refrigerator, an air conditioner, a medicine cabinet, a water bath, a homogenizer, a vibrator and a stirrer.
According to the method, the user can effectively evaluate the loss state of the electric equipment in time, so that the stability and the safety of the electric equipment are ensured, and the life and property safety of the user is ensured.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (7)
1. A method for evaluating a loss state of a powered device, comprising the steps of:
1) an electric energy meter is connected in series with a current path of each electric device, a first electric quantity a of the electric device in a first time period and a second electric quantity b of the electric device in a second time period are obtained by the electric energy meter, the second time period is the time after the first time period, the second time period is adjacent to the first time period, the first time period and the second time period are both continuous operation time, and the time length c is equal;
2) calculating a power consumption increasing rate d of the power consumption equipment in a time period by using the first power consumption and the second power consumption, wherein d is (b-a)/a;
3) calculating the expected power consumption of the electric equipment in each time period of a plurality of continuous time periods to be generated by utilizing the power consumption increasing rate, wherein the plurality of time periods are adjacent time periods after the second time period;
4) acquiring the actual power consumption of each electric device in each time period in the plurality of time periods through an electric energy meter corresponding to each electric device, comparing the actual power consumption of the electric device in each time period with the corresponding predicted power consumption one by one, if the actual power consumption is less than or equal to the predicted power consumption, considering that the electric device is in a normal device loss state, and if the actual power consumption is greater than the predicted power consumption and the difference exceeds a predicted power consumption difference threshold value, considering that the electric device is in an abnormal device loss state;
wherein, the electric energy meter sets up with every consumer one-to-one, just the leading flank department of electric energy meter is provided with a plurality of safety covers, this a plurality of safety cover parallel arrangement, the safety cover perpendicular to the leading flank of electric energy meter installs above that, every the safety cover all includes:
the cap-shaped component is provided with a cap top and a side wall flange, the cap top is connected to the electric energy meter, a reverse part is formed on the side wall flange, and the reverse part is clamped on the side surface of the electric energy meter;
the blocking part is fixed in the cap-shaped component and closes the opening of the cap-shaped component, and a plurality of recesses are formed in the blocking part and face the inner direction of the cap-shaped component.
2. The method of assessing a state of wear of an electrical consumer in accordance with claim 1, wherein the first time period, the second time period, and each of the plurality of time periods are 30 days in duration.
3. The method for assessing the wear state of an electrical consumer according to claim 2, wherein in step 3) the number of time periods does not exceed 10 time periods.
4. The method for evaluating the wear status of a powered device as claimed in claim 2, wherein in step 3),
if the time periods exceed 10 time periods, entering step 5);
and 5), taking the average electricity consumption of each time period of the previous 13 time periods as a new first electricity consumption, taking the electricity consumption of the 14 th time period as a second electricity consumption, and re-entering the step 1).
5. The method for evaluating the loss state of an electric device according to claim 1, wherein in the step 3), the predicted electric quantity in the subsequent time period is calculated based on the predicted electric quantity in the previous time period and the electric quantity increase rate.
6. The method for evaluating the power consumption equipment loss state according to claim 1, wherein in the step 4), the predicted power consumption difference threshold is 1% -5% of the predicted power consumption.
7. The method of assessing a state of wear of an electrical device of claim 1, wherein the electrical device comprises a centrifuge, a washing machine, a refrigerator, an air conditioner, a drug cabinet, a water bath, a homogenizer, a shaker, and a blender.
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| CN108828375B (en) * | 2018-08-17 | 2020-08-14 | 国网江苏省电力有限公司电力科学研究院 | Air conditioner electric monitoring system and method based on double-loop intelligent electric energy meter |
| CN108931926B (en) * | 2018-08-27 | 2021-08-17 | 国网河北省电力有限公司沧州供电分公司 | Household electricity energy-saving method and device and server |
| CN115619594B (en) * | 2022-12-21 | 2023-03-10 | 南京六的平方信息技术有限公司 | Wisdom management system based on engineering construction equipment power consumption data |
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