CN109344974B - Method for quickly correcting error of on-off record of electrical equipment - Google Patents
Method for quickly correcting error of on-off record of electrical equipment Download PDFInfo
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Abstract
The invention provides a method for quickly correcting errors of switching value records of electrical equipment. The method comprises the following specific steps: first, switch variables of the electrical equipment are designated from a designated historical periodDuring recording, repeatedly appearing switching value records are removed, and the sequence is carried out from first to last according to the recording time; screening out switching value records in the normal operation time period of the electrical equipment, and removing the screened abnormal records; calculating the running time of the equipment, and finally calculating the ratio of the number of abnormal records to the number of normal recordsfAnd a threshold valueδ 0Make a comparison iffGreater than a threshold valueδ 0When the equipment is in use, the equipment is maintained and checked, if so, the equipment is maintained and checkedfIs not greater than the thresholdδ 0In time, the equipment does not need to be maintained and checked. According to the invention, the switching value records caused by equipment maintenance, data transmission packet loss, abnormal actions and mistaken signal sending are separated from the switching value records of the specified electrical equipment in the operation state in the specified historical period, so that important technical support is provided for the evaluation of the operation state and the analysis of abnormal data.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a method for quickly correcting errors of switching value records of the electrical equipment.
Background
The invention can quickly correct the switching value record of the electrical equipment, so as to timely master the running state of the electrical equipment in the running state, obtain the failure mode which can not be identified by human perception, and provide basic support for the work such as clues for equipment state maintenance.
The data recorded by the switching value of the electrical equipment is huge. In the past, due to the lack of an effective error correction method, a random point selection method and an equal sampling period point selection method are mostly adopted to select data 'representative' for analysis. Therefore, the obtained analysis result is not comprehensive, and the engineering technical significance of the analysis result is not strong.
Meanwhile, the switching value records of the electrical equipment have more abnormal switching value records caused by equipment maintenance, data transmission packet loss, abnormal actions and mistaken signal sending. So that the running data analysis is extremely difficult to perform batch analysis on data in a normal running state. And great difficulty is brought to operators to quickly identify the performance state of the equipment in each historical time period.
According to the invention, by combining engineering experience, the abnormal mode of the switching value record is comprehensively considered, the past manual processing work is standardized and is finished by a computer, so that the automatic detection and control can be realized by long-term manual processing-dependent tedious work.
The invention can complete error correction without calculating the difference value of the switching value time record, and greatly improves the error correction speed of the computer. Because the segmented error correction is carried out according to the operation time interval of the electrical equipment, the use of the memory of the computer is greatly reduced, and favorable conditions are provided for subsequent big data analysis and calculation.
In addition, by separating the abnormal data and the operating data, operating personnel can identify the performance state of the operating equipment in each historical time period, and can quickly judge whether the relay, the control node, the control loop, the signal loop and the like of the operating equipment have defects according to the quantity of the abnormal data, so that the defects can be eliminated by overhauling before the defects are exposed. And the error rate of the electrical equipment switching value recording information system is controlled to be a lower level.
Disclosure of Invention
The invention aims to provide a method for quickly correcting the switching value record of electrical equipment, which is used for separating the switching value record caused by equipment maintenance, data transmission packet loss, abnormal action and mistaken signal sending from the switching value record of operating equipment in a specified historical period and providing important technical support for evaluating the operating state and analyzing abnormal data.
The purpose of the invention is realized by at least one of the following technical solutions.
The invention relates to a method for quickly correcting the error of the switching value record of electrical equipment, which comprises the following steps:
step 1, collecting a switch quantity record V of specified electrical equipment in a specified historical period0；
Step 2, recording the switching value V0Sequencing according to the time record sequence and taking the unrepeated switching value record to obtain a switching value record V1；
Step 3, according to the maintenance record M of the electrical equipment, recording V from the switching value1Selecting a switching value record V of the period i in which the electrical device is in the operating state2iFrom the switching value record V2iReject the abnormal record V screened outuiObtaining a switching value record V3i；
Step 4, calculating the switching value record V of each time perioduiNumber n ofuiObtaining the total number nu；
Step 5, using the total number nuDivided by record V1Number n of1Obtaining f if f is larger than the threshold delta0If f is not more than the threshold value delta, the equipment is maintained and checked0In time, the equipment does not need to be maintained and checked.
Further, the electric device is capable of recording the time and the "on" state at this time by sending out the switching value and capable of being started at any time when the electric device is normally in the operating state, and recording the time and the "off" state at this time by sending out the switching value and capable of being stopped at any time.
Further, the switching value includes two state records, i.e., a "1" state record representing "on" and a "0" state record representing "off", respectively; the switching value record at least comprises three record contents, namely time record accurate to millisecond, state record and electrical equipment description.
Further, record V to the switching value0Sorting according to chronological order of time record and not takingRepeated switching value recording, resulting switching value recording V1Obtained by the following steps:
step 21, recording the switching value V according to the sequence of the time recording from the first to the last0Sequencing to obtain a switching value record V01；
Step 22, taking the switch value record V01The switching value record with non-repeated middle time record is composed of a switching value record V1。
Further, the electrical equipment maintenance record M in step 3 is composed of a start time of the maintenance work and an end time of the maintenance work.
Further, a switch quantity record V of the period i when the electrical equipment is in the running state2iObtained by the following steps:
step 31, setting i to 1, and acquiring the group number n of the start and end time of the electrical equipment maintenance workmIf n ismIf the value of (A) is not 0, then the process proceeds to step 32, if n is not 0mIf the value of (b) is 0, the switching value is recorded as V1Record V of the switching value of the time interval i between the time interval and the running state of the electrical equipment2iIs the same record;
step 32, recording V from the switching value1The switching value record V of which the state record is 'on' and the time record is earlier than the overhauling starting moment of the i-th group of equipment is obtained2oni；
Step 33, recording V from the switching value1The switching value record V of which the state is recorded as 'off' and the time record is earlier than the maintenance starting time of the i-th group equipment is obtained2offi；
Step 34, recording the switching value V2oniAnd a switching value record V2offiMake up switching value record V2iI.e. the switching value record V1Selecting a switching value record V of the period i in which the electrical device is in the operating state2i；
Step 35, adding 1 to the value of i;
step 36, if nm>1 and i is less than or equal to nmIf not, go to step 37, otherwise go to step 311;
step 37, recording V from the switching value1In the acquisition state is recorded as "onThe time record is later than the overhaul finish time of the i-1 th group of equipment, and the time record is earlier than the switching value record V of the overhaul start time of the i-th group of equipment2oni；
Step 38, recording V from the switching value1The obtained state is recorded as 'off', the time record is later than the overhaul finish time of the i-1 th group of equipment, and the time record is earlier than the switching value record V of the overhaul start time of the i-th group of equipment2offi；
Step 39, recording the switching value V2oniAnd a switching value record V2offiMake up switching value record V2iI.e. the switching value record V1Selecting a switching value record V of the period i in which the electrical device is in the operating state2i；
Step 310, adding 1 to the value of i, and going to step 36;
step 311, record V from the switching value1The state record is obtained as 'on', and the time record is later than the n-thmRecord V of switching value at the end of group equipment maintenance2oni；
Step 312, record V from the switching value1The obtained state is recorded as "off" and the time is recorded later than the nthmRecord V of switching value at the end of group equipment maintenance2offi；
Step 313, recording the switching value V2oniAnd a switching value record V2offiMake up switching value record V2iI.e. the switching value record V1Selecting a switching value record V of the period i in which the electrical device is in the operating state2i。
Further, the abnormal record V of the period i when the electrical equipment is in the running state in the step 3uiAnd a switching value record V3iObtained by the following steps:
step 314, calculating a switching value record V of the electric equipment in the running state time period i2oniObtaining the number Itmpon;
step 315, calculating the switching value record V of the electric equipment in the running state time period i2offiObtaining the value Itmpoff;
step 316, if both the value Itmpon and the value Itmpoff are greater than 0, proceed to step 317,otherwise exception record VuiAnd a switching value record V2iIs the same record;
step 317, recording the switching value V of the period i when the electrical equipment is in the running state according to the time recording from first to last2iSorting is carried out to obtain a switching value record bOD;
step 318, obtaining the serial number of the switching value record with the state record of "on" from the switching value record bOD, and obtaining an array bODon;
step 319, calculating the difference between the front and rear terms of the array bODon to obtain an array bODondiff;
step 320, inquiring the position with the value of 1 in the array bODondiff to obtain a serial number array bODonwn;
step 321, if the serial number array bODonwn is not a null array, finding out the serial number array bODonwn to record V in the switching value2iRecording the corresponding switching value to obtain VuionIf the sequence number array bODonwn is empty, then VuionIs also a null array;
step 322, recording V from the switching value2oniMiddle eliminating VuionObtaining a switching value record V2oni1；
Step 323, obtaining the serial number of the switching value record with the state record of 'off' from the switching value record bOD, and obtaining an array bODoff;
step 324, calculating the difference value of the front term and the rear term of the array bODoff to obtain an array bODofffdiff;
step 325, inquiring the position with the value of 1 in the array bODoffdiff to obtain a sequence number array bODoffwn 1;
step 326, if the array bdocofwn 1 is not an empty array, adding 1 to each element of the sequence number array bdocofwn 1 to obtain a new sequence number array bdocofwn, and if the array bdocofwn is an empty array, also setting the new sequence number array bdocofwn to be empty;
step 327, find out the serial number array bdocoffwn in the switching value record V2iRecording the corresponding switching value to obtain Vuioff；
Step 328, recording V from the switch value2offiMiddle eliminating VuioffObtaining a switching value record V2offi1；
Step 329, if V2offi1First switch value record V2offi11Time recording ratio of (V)2oni1First switch value record V2oni11Early, then handle V2offi11Stored in the switching value record VuioffIn V2offi1Deletion in V2offi11；
Step 330, if V2oni1Last switching value record V2oni1endTime recording ratio of (V)2offi1Last switching value record V2offi1endLater, the user will turn V2oni1endStored in the switching value record VuionIn V2oni1Deletion in V2oni1end；
Step 331, recording the switching value VuionAnd a switching value record VuioffThe formed switching value record is an abnormal record V of the electrical equipment in the running state time period iui；
Step 332, recording the switching value V2oni1And a switching value record V2offi1The formed switching value record is the switching value record V of the electrical equipment in the operating state time period i3i。
Further, the total number n in the step 4uObtained from the following equation:
n in the formulamNumber of groups at the start and end of the inspection work for electrical equipment, nuiRecording V for abnormality of electrical equipment in operation state time period iuiThe number of the pieces of (a).
Further, the threshold value δ0The value was 0.05.
Compared with the prior art, the method for rapidly correcting the error of the switching value record of the electrical equipment fills the blank of the engineering field, and has the following advantages and technical effects:
(1) the switching value record detection and judgment method provided by the invention effectively solves the problem of error correction of the switching value record, realizes the separation of abnormal data and running data in the switching value record, and provides a technical basis for the subsequent calculation and analysis of the performance state of the running equipment in each historical time period;
(2) the invention can finish error correction without calculating the difference value of the switching value time record, greatly improves the processing speed, greatly reduces the memory use of the computer due to the sectional error correction according to the operation time interval of the electrical equipment, and provides favorable conditions for the subsequent big data analysis and calculation.
(3) The invention can also quickly judge whether the relay, the control node, the control loop, the signal loop and the like of the running equipment have defects according to the proportion of the abnormal data, and can realize defect elimination before the defects are exposed.
Drawings
Fig. 1 is a flowchart of a fast error correction method for recording the switching value of the electrical device in this example.
Detailed Description
The following description of the embodiments of the present invention is provided in connection with the accompanying drawings and examples, but the invention is not limited thereto. It is noted that the processes described below, if not specifically described in detail, are all realizable or understandable by those skilled in the art with reference to the prior art.
The example analysis of the switching value records of ball valve oil pumps of Guangzhou energy storage hydropower plant 2018, 01, 20, 00:00 to 02, 08, 00:00#7 is carried out as follows. The ball valve oil pump is started when the oil pressure of a unit ball valve hydraulic system is lower than 55bar, and is stopped when the oil pressure is equal to 60 bar.
As shown in tables 1, 2, 4, 5, and 6, the switching value records include time records accurate to milliseconds, status records, and electrical equipment descriptions. The letter combination of "7 MFB01EA100XG 22" in the electrical device description 1 indicates a #7 ball valve, and the letter combination of "sph. valve oil pump on (CMD)" in the electrical device description 2 indicates a start-stop command of the ball valve oil pump.
With reference to the flow of fig. 1, the method for rapidly correcting the error of the switching value record of the electrical equipment comprises the following steps:
step 1, acquiring and obtaining a switching value record V of a #7 ball valve oil pump in a historical period shown in table 1, namely, a period from 2018, 01, 20, 00 to 02, 08, 000；
Step 2, recording the switching value V0The switching value records V shown in the table 2 are obtained after the repeated switching value records are sequenced and deleted according to the time record sequence1；
Step 3, according to the equipment maintenance record M shown in the table 3, the slave switching value record V1Selecting a switching value record V of the period i in which the electrical device is in the operating state2iFrom the switching value record V2iReject the selected abnormal record V shown in Table 4uiObtaining a switching value record V3i；
Step 4, calculating the switching value record V of each time perioduiNumber n ofuiObtaining the total number nu；
Step 5, recording the total number n of the abnormal recordsuDivided by record V1F is 0.0323, and when f is not more than the threshold value of 0.05, the equipment does not need to be maintained and checked.
Record V of switch quantity of electrical equipment in operation state time period i2iIs obtained by the following steps:
and step 31, setting i to 1, and acquiring the group number n of the start and end time of the equipment maintenance workm，nmIf 1, go to step 32;
step 32, recording V from the switching value1The switching value record V of which the state record is 'on' and the time record is earlier than the maintenance starting time of the 1 st group device is obtained2on1；
Step 33, recording V from the switching value1A switch amount record V in which the state record is "off" and the time record is earlier than the group 1 equipment inspection start time is obtained2off1；
Step 34, recording the switching value V2on1And a switching value record V2off1Make up switching value record V21I.e. the switching value record V shown in Table 41The switching value record V of the time interval 1 in which the electrical device is in the operating state is selected21；
Step 35, adding 1 to the value of i;
step 36, nmIs 1, n is not satisfiedm>1 and i is less than or equal to nmIf so, go to step 311;
step 311, record V from the switching value1The obtained state record is 'on', and the time record is later than the switch value record V of the overhaul finish time of the group 1 equipment2on2；
Step 312, record V from the switching value1The obtained state is recorded as "off", and the time record is later than the switch value record V of the group 1 equipment maintenance finishing time2on2；
Step 313, recording the switching value V2on2And a switching value record V2off2Make up switching value record V22I.e. the switching value record V shown in Table 51The switching value record V of the time interval 2 in which the electrical device is in the operating state is selected22。
Abnormal record V of electric equipment in running state period 1u1And a switching value record V31Obtained by the following steps:
step 314, calculating the switching value record V2on1The number of pieces obtained for Itmpon is 23;
step 315, calculating the switching value record V2off1The number of strips obtained the value Itmpoff is 22;
step 316, if both the value Itmpon and the value Itmpoff are greater than 0, proceed to step 317;
step 317, recording the switching value V according to the sequence of the time recording from the first to the last2iSorting is carried out to obtain a switching value record bOD;
step 318, finding out the serial number of the switching value record with the state record of 'on' from the switching value record bOD to obtain an array bODon;
step 319, calculating the difference between the front and rear terms of the array bODon to obtain an array bODondiff;
step 320, inquiring the position with the value of 1 in the array bODondiff to obtain a serial number array bODonwn of [3 ];
step 321, finding the sequence number array bODonwn in the switching value record V21V obtained from the corresponding switching value record in (1), i.e., the switching value record shown in table 6u1on；
Step 322, recording V from the switching value2on1Middle eliminating Vu1onObtaining a record of the switching valueV2on11；
Step 323, finding out the serial number of the switching value record with the state record of 'off' from the switching value record bOD to obtain an array bODoff;
step 324, calculating the difference value of the front and rear terms of the array bODoff to obtain an array bODoffdiff;
step 325, inquiring the position with the value of 1 in the array bODoffdiff, and obtaining that the serial number array bODofwn 1 is empty;
step 326, adding 1 to each element of the sequence number array bODoffwn1 to obtain a new sequence number array bODoffwn which is also empty;
step 327, find out the serial number array bdocoffwn in the switching value record V21Recording the corresponding switching value to obtain Vu1offIs also empty;
step 328, recording V from the switch value2off1Middle eliminating Vu1offObtaining a switching value record V2off11；
Step 329, V2off11First switch value record V2off111Time recording ratio of (V)2on11First switch value record V2on111At night, the handle V is not needed2off111Stored in the switching value record Vu1offIn, V is not required2off11Deletion in V2off111；
Step 330, V2on11Last switching value record V2on11endTime recording ratio of (V)2off11Last switching value record V2off11endEarly, then V does not need to be held2on11endStored in the switching value record Vu1onIn, V is not required2on11Deletion in V2on11end；
Step 331, recording the switching value Vu1onAnd a switching value record Vu1offThe formed switching value record is an abnormal record Vu1；
Step 332, recording the switching value V2on11And a switching value record V2off11The formed switching value record is the switching value record V31。
Abnormal record V of period 2 when electrical equipment is in operation stateu2And a switching value record V32The same asThe abnormal record V obtained in the steps 314 to 332u2If it is empty, the switching value is recorded as V32And V21Is the same switch amount record.
Abnormal record Vu1And an exception record Vu2Composition anomaly record VuAbnormal record VuTotal number of (n)u＝nu1+nu2Thus recording an abnormality VuTotal number of (n)u＝1。
Dividing the total number of abnormal records by 1 by the switching value record V1If f is 0.0323 and f is not greater than the threshold value of 0.05, the equipment does not need to be maintained and checked.
In conclusion, the invention realizes the rapid separation of abnormal data and operating data in any historical period by a standardized error correction method, so that operating personnel can acquire switching value records from mass data to know the performance state of operating equipment in each historical period. And according to the proportion of the abnormal data, a failure mode which cannot be identified by human body perception is obtained, potential safety hazards influencing long-term stable operation of the equipment are found in time, and technical support is provided for quickly judging whether a relay, a control node, a control loop, a signal loop and the like of the operating equipment have defects.
TABLE 1 switching value record V0
TABLE 2 record of switching value V1
TABLE 3 maintenance record M
TABLE 4 switching value record V21
TABLE 5 switching value record V22
| Serial number | Time | Description of the apparatus 1 | Description of the apparatus 2 | Status of state |
| 142 | 2018-02-06 22:43:59:290 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 143 | 2018-02-06 22:44:26:880 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 144 | 2018-02-07 01:38:47:630 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 145 | 2018-02-07 01:39:08:460 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 146 | 2018-02-07 08:07:54:700 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 147 | 2018-02-07 08:08:23:380 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 148 | 2018-02-07 10:34:23:530 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 149 | 2018-02-07 10:34:50:470 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 150 | 2018-02-07 12:37:57:480 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 151 | 2018-02-07 12:38:21:130 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 152 | 2018-02-07 14:31:08:790 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 153 | 2018-02-07 14:31:35:700 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 154 | 2018-02-07 16:38:50:570 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 155 | 2018-02-07 16:39:18:680 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 156 | 2018-02-07 19:23:51:310 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 157 | 2018-02-07 19:24:19:390 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
| 158 | 2018-02-07 22:19:09:080 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
| 159 | 2018-02-07 22:19:36:050 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | off |
TABLE 6 switching value recording table Vu
| Serial number | Time | Description of the apparatus 1 | Description of the apparatus 2 | Status of state |
| 11 | 2018-01-20 06:20:13:830 | 7MFB01 EA100 XG22 | Sph.valve oil pump on(CMD) | on |
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are intended to be included in the scope of the present invention.
Claims (7)
1. The method for quickly correcting the error of the switching value record of the electrical equipment is characterized by comprising the following steps of:
step 1, collecting a switch quantity record V of specified electrical equipment in a specified historical period0；
Step 2, recording the switching value V0Sequencing according to the time record sequence and taking the unrepeated switching value record to obtain a switching value record V1；
Step 3, according to the maintenance record M of the electrical equipment, recording V from the switching value1Selecting a switching value record V of the period i in which the electrical device is in the operating state2iFrom the switching value record V2iReject the abnormal record V screened outuiObtaining a switching value record V3i(ii) a Step 3, recording the abnormal condition V of the electric equipment in the running state time period iuiAnd a switching value record V3iObtained by the following steps:
step 314, calculating a switching value record V of the electric equipment in the running state time period i2oniObtaining the number Itmpon;
step 315, calculating the switching value record V of the electric equipment in the running state time period i2offiObtaining the value Itmpoff;
step 316, if the value Itmpon and the value Itmpoff are both greater than 0, go to step 317, otherwise record V abnormallyuiAnd a switching value record V2iIs the same record;
step 317, recording the switching value V of the time period i when the electrical equipment is in the running state according to the time sequence from the first to the last2iSorting is carried out to obtain a switching value record bOD;
step 318, obtaining the serial number of the switching value record with the state record of "on" from the switching value record bOD, and obtaining an array bODon;
step 319, calculating the difference between the front and rear terms of the array bODon to obtain an array bODondiff;
step 320, inquiring the position with the value of 1 in the array bODondiff to obtain a serial number array bODonwn;
step 321, if the serial number array bODonwn is not a null array, finding out the serial number array bODonwn to record V in the switching value2iRecording the corresponding switching value to obtain VuionIf the sequence number array bODonwn is empty, then VuionIs also a null array;
step 322, recording V from the switching value2oniMiddle eliminating VuionObtaining a switching value record V2oni1；
Step 323, obtaining the serial number of the switching value record with the state record of "off" from the switching value record bOD, and obtaining an array bODoff;
step 324, calculating the difference value of the front and rear terms of the array bODoff to obtain an array bODoffdiff;
step 325, inquiring the position with the value of 1 in the array bODoffdiff to obtain a sequence number array bODoffwn 1;
step 326, if the array bdocofwn 1 is not an empty array, adding 1 to each element of the sequence number array bdocofwn 1 to obtain a new sequence number array bdocofwn, and if the array bdocofwn is an empty array, also setting the new sequence number array bdocofwn to be empty;
step 327, find out the serial number array bdocoffwn in the switching value record V2iRecording the corresponding switching value ofGet Vuioff；
Step 328, recording V from the switch value2offiMiddle eliminating VuioffObtaining a switching value record V2offi1；
Step 329, if V2offi1First switch value record V2offi11Time recording ratio of (V)2oni1First switch value record V2oni11Early, then handle V2offi11Stored in the switching value record VuioffIn V2offi1Deletion in V2offi11；
Step 330, if V2oni1Last switching value record V2oni1endTime recording ratio of (V)2offi1Last switching value record V2offi1endNight, then handle V2oni1endStored in the switching value record VuionIn V2oni1Deletion in V2oni1end；
Step 331, recording the switching value VuionAnd a switching value record VuioffThe formed switching value record is an abnormal record V of the electrical equipment in the running state time period iui；
Step 332, recording the switching value V2oni1And a switching value record V2offi1The formed switching value record is the switching value record V of the electrical equipment in the operating state time period i3i；
Record V of switch quantity of electrical equipment in operation state time period i2iObtained by the following steps:
step 31, setting i to 1, and acquiring the group number n of the start and end time of the electrical equipment maintenance workmIf n ismIf the value of (A) is not 0, then the process proceeds to step 32, if n is not 0mIf the value of (d) is 0, the switching value is recorded as V1Record V of the switching value of the time interval i between the time interval and the running state of the electrical equipment2iIs the same record;
step 32, recording V from the switching value1The switching value record V of which the state record is 'on' and the time record is earlier than the overhauling starting moment of the i-th group of equipment is obtained2oni；
Step 33, recording V from the switching value1The in-gain state is recorded as "off" and the time is recorded as early asRecord V of switch quantity at the i-th group equipment maintenance starting time2offi；
Step 34, recording the switching value V2oniAnd a switching value record V2offiMake up switching value record V2iI.e. the switching value record V1Selecting a switching value record V of the period i in which the electrical device is in the operating state2i；
Step 35, adding 1 to the value of i;
step 36, if nm>1 and i is less than or equal to nmIf not, go to step 37, otherwise go to step 311;
step 37, recording V from the switching value1The obtained state record is 'on', the time record is later than the overhaul finish time of the i-1 th group of equipment, and the time record is earlier than the switching value record V of the overhaul start time of the i-th group of equipment2oni；
Step 38, recording V from the switching value1The obtained state is recorded as 'off', the time record is later than the overhaul finish time of the i-1 th group of equipment, and the time record is earlier than the switching value record V of the overhaul start time of the i-th group of equipment2offi；
Step 39, recording the switching value V2oniAnd a switching value record V2offiMake up switching value record V2iI.e. the switching value record V1Selecting the switching value record V of the time period i when the electrical equipment is in the operation state2i；
Step 310, adding 1 to the value of i, and going to step 36;
step 311, record V from the switching value1The state record is obtained as 'on', and the time record is later than the n-thmRecord V of switching value at the end of group equipment maintenance2oni；
Step 312, record V from the switching value1The obtained state is recorded as "off" and the time is recorded later than the nthmRecord V of switching value at the end of group equipment maintenance2offi；
Step 313, recording the switching value V2oniAnd a switching value record V2offiMake up switching value record V2iI.e. the switching value record V1Switch quantity register for selecting time interval i of electric equipment in running stateRecord V2i；
Step 4, calculating abnormal record V of switching value in each time perioduiNumber n ofuiObtaining the total number nu；
Step 5, using the total number nuDivided by record V1Number n of1Obtaining f if f is larger than the threshold delta0If f is not more than the threshold value delta, the equipment is maintained and checked0In time, the equipment does not need to be maintained and checked.
2. The electrical equipment switching value recording fast error correction method according to claim 1, characterized in that: in the step 1, the electrical equipment can be started at any time and records the time and the 'on' state at the time by sending out the switching value when the electrical equipment is in the running state under the normal condition, and can also be stopped at any time and records the time and the 'off' state at the time by sending out the switching value.
3. The electrical equipment switching value recording fast error correction method according to claim 2, characterized in that: the switching value comprises two state records, namely a ' 1 ' state record representing ' on ' and a ' 0 ' state record representing ' off; the switching value records at least comprise time records, state records and electrical equipment descriptions accurate to milliseconds.
4. The electrical equipment switching value recording fast error correction method according to claim 1, characterized in that: the switching value record V in the step 21Obtained by the following process:
step 21, recording the switching value V according to the sequence of the time recording from the first to the last0Sequencing to obtain a switching value record V01；
Step 22, taking the switch value record V01The switching value record with non-repeated middle time record is composed of a switching value record V1。
5. The electrical equipment switching value recording fast error correction method according to claim 1, characterized in that: and in the step 3, the electrical equipment maintenance record M consists of the starting time of maintenance work and the finishing time of the maintenance work.
6. The electrical equipment switching value recording fast error correction method according to claim 1, characterized in that: the total number n of the step 4uObtained from the following equation:
n in the formulamNumber of groups at the start and end of the inspection work for electrical equipment, nuiRecording V for abnormality of electrical equipment in operation state time period iuiThe number of the pieces of (a).
7. The electrical equipment switching value record rapid error correction method according to any one of claims 1 to 6, characterized in that: the threshold value delta0Is 0.05.
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| CN105045253A (en) * | 2015-05-27 | 2015-11-11 | 广东蓄能发电有限公司 | Method for quickly discriminating abnormal operating condition of electrical equipment |
| CN105335817A (en) * | 2015-10-14 | 2016-02-17 | 广东蓄能发电有限公司 | Checking method of 'three noes' devices |
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| CN105045253A (en) * | 2015-05-27 | 2015-11-11 | 广东蓄能发电有限公司 | Method for quickly discriminating abnormal operating condition of electrical equipment |
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