Circuit breaker hydraulic operating mechanism abnormality early warning method and system based on alarm information

Abstract

The present invention relates to the technical field of electric power equipment, and discloses a circuit breaker hydraulic operating mechanism abnormal warning method and system based on alarm information, S1, obtaining various types of initial monitoring alarm information of substation equipment; S2, preliminarily cleaning various types of the initial monitoring alarm information, filtering out irregular information, so as to obtain the first monitoring alarm information after cleaning; S3, based on keywords related to the circuit breaker hydraulic operating mechanism, extracting relevant monitoring alarm information related to the keywords from the first monitoring alarm information; S4, judging whether the circuit breaker hydraulic operating mechanism has defects based on the quantity change trend of several related monitoring alarm information within a certain time range, and if so, issuing an early warning. The present invention utilizes the proposed monitoring information analysis method and criterion to effectively track and analyze the status of the circuit breaker hydraulic operating mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to an abnormal early warning method and system for a hydraulic operating mechanism of a circuit breaker based on alarm information. Background Art

[0002] The safety and reliability of the circuit breaker hydraulic operating mechanism, as an important component of the circuit breaker, directly affects the normal breaking of the circuit breaker. Timely and effective detection of defects in the circuit breaker hydraulic operating mechanism and timely elimination of defects can effectively improve the life of the circuit breaker hydraulic operating mechanism, avoid affecting the breaking performance of the circuit breaker, and avoid risks to the safe and stable operation of the power grid and equipment.

[0003] Currently, routine inspections are mainly used to observe whether there are any abnormalities in the circuit breaker operating mechanism. However, there are a large number of circuit breaker devices in substations, and most substations are currently unmanned. Inspections have certain limitations and lags in discovering equipment defects. In addition, there are also auxiliary judgments through monitoring alarm information, but the judgment method based on monitoring alarm information still has the following problems: 1) The background receives a large amount of monitoring alarm information every day, and the monitoring alarm information related to the circuit breaker hydraulic operating mechanism is easily submerged in other alarm information, which is not easy to attract the attention of the monitoring staff on duty; 2) Even if more attention is paid to the monitoring alarm information, the use of the monitoring alarm information is mostly limited to the judgment of the state value contained in the current alarm information, and there is no trend analysis combined with the historical monitoring alarm information big data. Therefore, it is difficult to detect the abnormality or defects of the circuit breaker hydraulic operating mechanism in advance and issue a timely warning. Summary of the invention

[0004] The present invention provides a method and system for early warning of abnormality of a hydraulic operating mechanism of a circuit breaker based on alarm information. By utilizing the proposed analysis method and criterion based on monitoring alarm information, the state of the hydraulic operating mechanism of the circuit breaker can be effectively tracked and analyzed. When its state shows a larger deviation value than usual (sudden change or short-term frequent occurrence), or the state continues to deteriorate (gradual change), the abnormality can be discovered early, and the operation and maintenance personnel can arrive at the site early to verify and eliminate the fault, so as to avoid circuit breaker failure and power grid operation risks.

[0005] The present invention is achieved through the following technical solutions:

[0006] A circuit breaker hydraulic operating mechanism abnormality early warning method based on alarm information, comprising:

[0007] S1. Obtain various initial monitoring alarm information of substation equipment;

[0008] S2. Preliminarily clean the various types of initial monitoring alarm information to filter out irregular information, so as to obtain cleaned first monitoring alarm information;

[0009] S3. Based on keywords related to the hydraulic operating mechanism of the circuit breaker, extract relevant monitoring alarm information related to the keywords from the first monitoring alarm information;

[0010] S4. Judging whether there is a defect in the hydraulic operating mechanism of the circuit breaker based on the quantity change trend of the relevant monitoring alarm information within a certain time range, and if so, issuing an early warning.

[0011] As an optimization, all types of initial monitoring alarm information are provided by the power system D5000 or OPEN3000 system or the new generation centralized control station monitoring system.

[0012] As an optimization, the keyword is related to the oil pump.

[0013] As an optimization, in S3, the keywords related to the circuit breaker hydraulic operating mechanism include one or more of oil pump operation, oil pump start, oil pump pressure timeout, oil pump pressure, and oil pump motor start.

[0014] As an optimization, the quantity change trend of the relevant monitoring alarm information includes a continuous growth type, and the continuous growth type is specifically:

[0015] A. Assume that the number of alarms corresponding to the first M time intervals to the first 1 time interval is N M ...N2, N1, and N M ...N2 and N1 satisfy the continuous growth, that is, N M <N M-1 <…<N2<N1, M is a positive integer not less than 5;

[0016] B.N M From N1 to N1, no more than (M-1) / 4 descending or unchanged and rising processes are allowed, and the descending or unchanged and rising processes do not involve N M With N M-1 The process of falling or unchanged and then rising refers to a falling amplitude of no more than 50% and then rising again after falling or unchanged and exceeding the previous 2 values, that is, N M <N M-1 <…<N M-a <N M-(a+2) ...<N1,N M-(a+1) ≤N M-a And (N M-(a+1) -N M-a ) / N M-a The absolute value of is ≤50%, a is a positive integer, and a∈[2,M-2);

[0017] C.N M To N1, it is allowed that there are no more than (M-1) / 4 descending or unchanged and rising processes, which involve NM or N M-1 The process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, it meets one of the following two conditions: 1) N M ≥N M-1 , N M-1 <N M-2 And N M-2 >N M , and (N M-1 -N M ) / N M The absolute value of ≤50%, 2)N M-1 ≥N M-2 , N M-2 <N M-3 And N M-3 >N M-1 , and (N M-2 -N M-1 ) / N M-1 The absolute value of ≤50%;

[0018] If A, B or C is met, an early warning is issued.

[0019] As an optimization, the quantity change trend of the relevant monitoring alarm information includes a sudden increase type, and the sudden increase type is specifically:

[0020] The number of alarms in the previous time interval is compared with the number of alarms in the previous time interval, and the increase in the number of alarms in the previous time interval is not less than X times, where X varies depending on the model and manufacturer of the circuit breaker operating mechanism and the requirements for early warning accuracy control.

[0021] As an optimization, the quantity change trend of the relevant monitoring alarm information includes a mean value exceeding the limit type, and the mean value exceeding the limit type is specifically:

[0022] D. Take the average value of the number of alarms of the P groups from the last time interval to the last P time intervals as the first average value, and the first average value is not less than Y times. If there is a time interval with 0 alarms from the last time interval to the last P time intervals, the time interval with 0 alarms is not included in the calculation of the first average value, wherein Y varies depending on the model, manufacturer and early warning accuracy control requirements of the circuit breaker operating mechanism, and P is mainly determined according to the timeliness of the early warning and the judgment accuracy;

[0023] E. Take the average of the number of alarms of group P from the previous 1 time interval to the previous P time intervals as the first average value. If there is a time interval with a number of alarms of 0 from the previous 1 time interval to the previous P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the first average value. Take the average of the number of alarms of group P from the previous (P+1) time interval to the previous 2*P time intervals as the second average value. If there is a time interval with a number of alarms of 0 from the previous (P+1) time interval to the previous 2*P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the second average value. The first average value is greater than the second average value by c% or more, c is a positive number, and P is mainly determined based on the timeliness of the warning and the judgment accuracy.

[0024] If D or E is met, a warning is issued.

[0025] As an optimization, the quantity change trend of the relevant monitoring alarm information includes a short-time frequent type, and the short-time frequent type is specifically:

[0026] Calculate the time difference between every two adjacent alarms in the previous time interval, that is, the interval between the reset of the (Q-1)th alarm and the activation of the Qth alarm, Q is a positive integer greater than 2, and the interval is less than R hours if it is too short. If the interval is too short Z times or more in a time interval, an early warning is issued, where R and Z vary depending on the model of the circuit breaker operating mechanism, the manufacturer, and the requirements for early warning accuracy and timeliness.

[0027] The present invention also discloses a circuit breaker hydraulic operating mechanism abnormality early warning system based on monitoring alarm information, comprising:

[0028] Acquisition module: used to obtain various initial monitoring alarm information of substation equipment;

[0029] Cleaning module: used for preliminarily cleaning various types of initial monitoring alarm information, filtering out irregular information, so as to obtain cleaned first monitoring alarm information;

[0030] A screening module: configured to extract relevant monitoring alarm information related to the keyword from the first monitoring alarm information based on the keyword related to the circuit breaker hydraulic operating mechanism;

[0031] Judgment module: used to judge whether there is a defect in the hydraulic operating mechanism of the circuit breaker based on the quantitative change trend analysis of a number of related monitoring alarm information within a certain time range, and if so, issue an early warning.

[0032] As an optimization, the judgment module includes a continuous growth judgment submodule, a sudden increase judgment submodule, a mean value exceeding limit judgment submodule and a short-time frequent judgment submodule, wherein:

[0033] The continuous growth judgment submodule is used to judge whether the number of alarms corresponding to the first M time intervals to the first time interval satisfies continuous growth, that is, assuming that the number of alarms corresponding to the first M time intervals to the first time interval is N respectively. M 、N M-1 ...N2, N1, judge N M ...Whether the sizes of N2 and N1 satisfy continuous growth, that is, whether N M <N M-1 <…<N2<N1, M is a positive integer not less than 5; or N M From N1 to N1, are there no more than (M-1) / 4 descending or unchanged and rising processes, and the descending or unchanged and rising processes do not involve N M With N M-1 The process of falling or unchanged and then rising refers to a falling amplitude of no more than 50% and then rising again after falling or unchanged and exceeding the previous 2 values, that is, N M <N M-1 <N M-2 <…<N M-a <N M-(a+2) …<N M1 , N M-(a+1) ≤N M-a And (N M-(a+1) -N M-a ) / N M-a The absolute value of is ≤50%, a is a positive integer, and a∈[2,M-2); or N M To N1, are there no more than (M-1) / 4 descending or unchanged and rising processes, and the descending or unchanged and rising processes involve N M or N M-1 The process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, it is judged whether one of the following two conditions is met: 1) N M ≥N M-1 , N M-1 <N M-2 And N M-2 >N M , and (N M-1 -N M ) / N M The absolute value of ≤50%, 2)N M-1 ≥N M-2 , N M-2 <N M-3 And N M-3 >N M-1 , and (N M-2 -N M-1 ) / N M-1 The absolute value of ≤50%;

[0034] The sudden increase judgment submodule is used to compare the number of alarms in the previous time interval with the number of alarms in the previous time interval, and judge whether the increase in the number of alarms in the previous time interval is not less than X times;

[0035] The mean over-limit judgment submodule is used to take the average value of the number of alarms of the P group from the previous time interval to the previous P time intervals as the first average value, and judge whether the first average value is not less than Y times, or take the average value of the number of alarms of the P group from the previous time interval to the previous P time intervals as the first average value, if there is a time interval with a number of alarms of 0 from the previous time interval to the previous P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the first average value, take the average value of the number of alarms of the P group from the previous (P+1) time interval to the previous 2*P time intervals as the second average value, if there is a time interval with a number of alarms of 0 from the previous (P+1) time interval to the previous 2*P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the second average value, and judge whether the first average value is greater than the second average value by c% or more;

[0036] The short-time frequent judgment submodule is used to calculate the time difference between every two adjacent alarms within a time interval, that is, the interval between the reset of the (Q-1)th alarm and the activation of the Qth alarm, Q is a positive integer greater than 2, and the interval is less than R hours, which is too short. It is judged whether the interval is too short for Z times or more in a time interval.

[0037] The present invention also discloses an electronic device, comprising at least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned early warning method for abnormality of the hydraulic operating mechanism of a circuit breaker.

[0038] The present invention also discloses a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the above-mentioned early warning method for abnormality of a hydraulic operating mechanism of a circuit breaker.

[0039] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0040] The present invention innovatively uses the amount of oil pump-related alarm information as a state parameter for judging the state of the circuit breaker hydraulic operating mechanism, proposes four methods suitable for analyzing the alarm trend of the circuit breaker hydraulic operating mechanism, and clearly gives the judgment criteria to help warn of abnormalities or defects in the circuit breaker hydraulic operating mechanism. The proposed method and system can be used to effectively track and analyze the state of the circuit breaker hydraulic operating mechanism. When its state has a larger deviation value (sudden change) than usual, or the state continues to deteriorate (gradual change), it can be discovered early, and the operation and maintenance personnel can arrive at the site early to verify and eliminate the fault, so as to avoid circuit breaker failure and power grid operation risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0042] Figure 1 The present invention provides a flow chart of a method for early warning of abnormality of a hydraulic operating mechanism of a circuit breaker based on alarm information. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0044] Example

[0045] A circuit breaker hydraulic operating mechanism abnormality early warning method based on alarm information, comprising:

[0046] S1. Obtain various initial monitoring alarm information of substation equipment;

[0047] In this embodiment, the source of various types of initial monitoring alarm information is the power system D5000 or OPEN3000 system or the new generation centralized control station monitoring system, and the monitoring alarm information related to the circuit breaker hydraulic operating mechanism is also provided by the power system D5000 / OPEN3000 or the new generation centralized control station monitoring system.

[0048] S2. Preliminary cleaning is performed on each type of the initial monitoring alarm information to filter out irregular information to obtain the cleaned first monitoring alarm information; the irregular information here includes garbled characters in the monitoring information content, unclear meaning of the monitoring information, inaccurate mapping between the monitoring information and the equipment ledger, and incorrect classification of the monitoring alarm information type.

[0049] S3. Based on the keywords related to the circuit breaker hydraulic operating mechanism, extract the relevant monitoring alarm information related to the keywords from the first monitoring alarm information; in this embodiment, the keywords related to the circuit breaker hydraulic operating mechanism include one or more of oil pump operation, oil pump start, oil pump pressure timeout, oil pump pressure, and oil pump motor start. The early warning method of the present invention mainly starts with the alarm information related to the oil pump to warn of the abnormality of the circuit breaker hydraulic operating mechanism, and the oil pump is a component of the circuit breaker hydraulic operating mechanism. The alarm information related to the oil pump is the specific alarm content shown by the above keywords.

[0050] S4. Judging whether there is a defect in the hydraulic operating mechanism of the circuit breaker based on the quantity change trend of the relevant monitoring alarm information within a certain time range, and if so, issuing an early warning.

[0051] The quantity change trends of the related monitoring alarm information include continuous growth type, sudden increase type, average value exceeding limit type and short-term frequent type. An early warning can be issued if any of the above change trends is met.

[0052] In this embodiment, the quantity change trend of the relevant monitoring alarm information includes a continuous growth type, and the continuous growth type is specifically:

[0053] A. Assume that the number of alarms corresponding to the first M time intervals to the first 1 time interval is N M ...N2, N1, and N M ...N2 and N1 satisfy the continuous growth, that is, N M <N M-1 <…<N2<N1, M is a positive integer not less than 5;

[0054] B.N M From N1 to N1, no more than (M-1) / 4 descending or unchanged and rising processes are allowed, and the descending or unchanged and rising processes do not involve N M With N M-1 The process of falling or unchanged and then rising refers to a falling amplitude of no more than 50% and then rising again after falling or unchanged and exceeding the previous 2 values, that is, N M <N M-1 <…<N M-a <N M-(a+2) ...<N1,N M-(a+1) ≤N M-a And (N M-(a+1) -N M-a ) / N M-a The absolute value of is ≤50%, a is a positive integer, and a∈[2,M-2);

[0055] C.N MTo N1, it is allowed that there are no more than (M-1) / 4 descending or unchanged and rising processes, which involve N M or N M-1 The process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, it meets one of the following two conditions: 1) N M ≥N M-1 , N M-1 <N M-2 And N M-2 >N M , and (N M-1 -N M ) / N M The absolute value of ≤50%, 2)N M-1 ≥N M-2 , N M-2 <N M-3 And N M-3 >N M-1 , and (N M-2 -N M-1 ) / N M-1 The absolute value of ≤50%;

[0056] If A, B or C is met, an early warning is issued.

[0057] The time interval here is set according to the actual situation. The time interval is not limited to 1 day (24 hours), and the time interval can be customized according to the requirements of warning accuracy and timeliness.

[0058] For example, the time interval can be half a day (12 hours), then N1 is the number of alarms in the previous 12 hours, N2 is the number of alarms in the previous 12-24 hours, and N3 is the number of alarms in the previous 24-36 hours; for example, the time interval can also be 3 hours, then N1 is the number of alarms in the previous 3 hours, N2 is the number of alarms in the previous 3-6 hours, N3 is the number of alarms in the previous 6-9 hours, and so on. The time interval of this embodiment is based on days to count the number of alarm information per day.

[0059] A. Assume that the number of alarms in the previous 5 days, previous 4 days, previous 3 days, previous 2 days and previous 1 day are N5, N4, N3, N2 and N1 respectively, and N5<N4<N3<N2<N1;

[0060] B. There is one (in this embodiment, M=5, (M-1) / 4=1) data that has a decrease (decline less than or equal to 50%) or is equal to the data of the previous day, such as N5<N4<<N3<N1 (the three change processes formed by the four data all show an increase), and at the same time N2≤N3 and the absolute value of (N2-N3) / N3≤50%;

[0061] C. The number of alarms in the earliest three time intervals, that is, N5≥N4, N4<N3 and N3>N5, and the absolute value of (N4-N5) / N5≤50%, and the other links continue to increase (that is, N3<N2<N1).

[0062] If any of the above three situations is met, an early warning will be issued.

[0063] For example, if today is August 4th, then the number of alarms on the previous day refers to the number of alarms on August 3rd, the number of alarms on the previous two days refers to the number of alarms on August 2nd (excluding August 3rd), the number of alarms on the previous three days refers to the number of alarms on August 1st (excluding August 2nd and 3rd), and so on.

[0064] Assuming that the number of alarms in the previous 5 days, previous 4 days, ... previous 1 day is 1, 3, 4, 8, 10 respectively, then the number of alarms in the next time interval (the next day) is always greater than the number of alarms in the previous time interval (the previous day), which meets the A condition;

[0065] Since situation A may be more stringent, it is appropriately relaxed to allow no more than (M-1) / 4 decreases (or unchanged) and then increases in the middle. This decrease (or unchanged) and then increase situation means that the number of alarms in the next time interval does not decrease by more than 50% (or equal to 0%) compared with the number of alarms in the previous time interval, and the number of alarms must increase in the next time interval, and the number of alarms in the next time interval must be greater than the number of alarms in the previous two time intervals. The above is situation B. The first two groups of data below meet situation B:

[0066] 1)1,3,6,5,7

[0067] 2)1,3,6,6,7

[0068] 3)1,5,4,4,5

[0069] 4)1,2,5,5,5

[0070] There are 5 time intervals of data here, (M-1) / 4=1, so if the condition A is not met, according to the above description, it is allowed to have 1 drop (or no change) and then rise, and the number of alarms in other time intervals still shows an upward trend, then the warning condition is met;

[0071] Group 1) does not meet condition A (6→5 has a decline), but the process of 6→5→7 meets the condition of decline (6→5) and then rise (5→7), and |(5-6)| / 6<50%, and 7>5, and 7>6, and there is no decline or no change in other links, which meets condition B, so an early warning is issued;

[0072] Group 2) does not meet condition A (6→6 does not belong to the growth situation), but the process of 6→6→7 meets the situation of unchanged (6→6) to rising (6→7), and |(6-6)| / 6<50%, and 7>6, and there is no decline or unchanged situation in other links, which meets condition B, then an early warning is issued;

[0073] In the third group, there is a decrease from 5 to 4, but the subsequent 4 to 4 is not an increase process, so the data of this group does not meet the warning conditions;

[0074] In the 4th group, the link 5→5→5 showed an unchanged process of 5→5 but no growth appeared afterwards (it was still an unchanged process of 5→5), so this group of data did not meet the warning conditions.

[0075] In this embodiment, the quantity change trend of the relevant monitoring alarm information includes a sudden increase type, and the sudden increase type is specifically:

[0076] The number of alarms in the previous time interval is compared with the number of alarms in the previous time interval, and the increase in the number of alarms in the previous time interval is not less than X times, where X varies depending on the model and manufacturer of the circuit breaker operating mechanism and the requirements for early warning accuracy control.

[0077] Set the time interval to day, X value to 10, the total number of alarms on the previous day is compared with the total number of alarms on the day before that, the increase is greater than or equal to 10 times, that is, for example, today is May 20, the day before is May 19, and the day before that is May 18. The number of alarms on May 19 is 15 times, which is greater than or equal to 3 times on May 18. The increase is greater than or equal to 10 times (the increase is 12 times), and it is judged that the hydraulic operating mechanism of the circuit breaker is abnormal, and an immediate warning is issued.

[0078] In this embodiment, the quantity change trend of the relevant monitoring alarm information includes a mean value exceeding the limit type, and the mean value exceeding the limit type is specifically:

[0079] D. Take the average value of the number of alarms of the P groups from the previous time interval to the previous P time intervals as the first average value, and the first average value is not less than Y times. If there is a time interval with 0 alarms from the previous time interval to the previous P time intervals, the time interval with 0 alarms is not included in the calculation of the first average value, wherein Y varies depending on the model of the circuit breaker operating mechanism, the manufacturer and the early warning accuracy control requirements;

[0080] E. Take the average value of the number of alarms of group P from the previous 1 time interval to the previous P time intervals as the first average value. If there is a time interval with a number of alarms of 0 from the previous 1 time interval to the previous P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the first average value. Take the average value of the number of alarms of group P from the previous (P+1) time interval to the previous 2*P time intervals as the second average value. If there is a time interval with a number of alarms of 0 from the previous (P+1) time interval to the previous 2*P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the second average value. The first average value is greater than the second average value by c% or more, where c is a positive number. c varies according to the model of the circuit breaker operating mechanism, the manufacturer and the early warning accuracy control requirements, but is generally greater than or equal to 20;

[0081] If D or E is met, a warning is issued.

[0082] For example, set the time interval to days, Y to 5, c to 20, take the average value of 10 groups of alarm quantities from the previous 1 day to the previous 10 days (if the value of a certain day is 0, it is not included in the average value calculation), and the value is greater than or equal to 5 times; the average value of the past 1-10 days is 20% or more greater than the average value of the past 11-20 days (if the value of a certain day is 0, it is not included in the average value calculation); an alarm will be triggered if any of the above is met.

[0083] In this embodiment, the quantity change trend of the relevant monitoring alarm information includes a short-time frequent type, and the short-time frequent type is specifically:

[0084] Calculate the time difference between every two adjacent alarms in the previous time interval, that is, the interval between the reset of the (Q-1)th alarm and the activation of the Qth alarm, Q is a positive integer greater than 2, and the interval is less than R hours if it is too short. If the interval is too short Z times or more in a time interval, an early warning is issued, where R and Z vary depending on the model of the circuit breaker operating mechanism, the manufacturer, and the requirements for early warning accuracy and timeliness.

[0085] For example, set the time interval to days, R to 2, Z to 2, and calculate the time interval between every two adjacent alarms of the previous day, that is, the time interval between the Nth alarm activation and the (N-1)th alarm recovery. If the time interval is less than 2 hours, it is too short. If the above-mentioned short interval occurs 2 or more times in one day, an alarm will be issued.

[0086] The present invention also discloses a circuit breaker hydraulic operating mechanism abnormality early warning system based on monitoring alarm information, comprising:

[0087] Acquisition module: used to obtain various initial monitoring alarm information of substation equipment;

[0088] Cleaning module: used for preliminarily cleaning various types of initial monitoring alarm information, filtering out irregular information, so as to obtain cleaned first monitoring alarm information;

[0089] A screening module: configured to extract relevant monitoring alarm information related to the keyword from the first monitoring alarm information based on the keyword related to the circuit breaker hydraulic operating mechanism;

[0090] Judgment module: used to judge whether there is a defect in the hydraulic operating mechanism of the circuit breaker based on the quantitative change trend analysis of a number of related monitoring alarm information within a certain time range, and if so, issue an early warning.

[0091] In this embodiment, the judgment module includes a continuous growth judgment submodule, a sudden increase judgment submodule, a mean value exceeding limit judgment submodule and a short-time frequent judgment submodule, wherein:

[0092] The continuous growth judgment submodule is used to judge whether the number of alarms corresponding to the first M time intervals to the first time interval satisfies continuous growth, that is, assuming that the number of alarms corresponding to the first M time intervals to the first time interval is N respectively. M 、N M-1 ...N2, N1, judge N M ...Whether the sizes of N2 and N1 satisfy continuous growth, that is, whether N M <N M-1 <…<N2<N1, M is a positive integer not less than 5; or N M From N1 to N1, are there no more than (M-1) / 4 descending or unchanged and rising processes, and the descending or unchanged and rising processes do not involve N M With N M-1 The process of falling or unchanged and then rising refers to a falling amplitude of no more than 50% and then rising again after falling or unchanged and exceeding the previous 2 values, that is, N M <N M-1 <N M-2 <…<N M-a <N M-(a+2) …<N M1 , N M-(a+1) ≤N M-a And (N M-(a+1) -N M-a ) / N M-a The absolute value of is ≤50%, a is a positive integer, and a∈[2,M-2); or N M To N1, are there no more than (M-1) / 4 descending or unchanged and rising processes, and the descending or unchanged and rising processes involve N M or N M-1The process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, it is judged whether one of the following two conditions is met: 1) N M ≥N M-1 , N M-1 <N M-2 And N M-2 >N M , and (N M-1 -N M ) / N M The absolute value of ≤50%, 2)N M-1 ≥N M-2 , N M-2 <N M-3 And N M-3 >N M-1 , and (N M-2 -N M-1 ) / N M-1 The absolute value of ≤50%;

[0093] The sudden increase judgment submodule is used to compare the number of alarms in the previous time interval with the number of alarms in the previous time interval, and judge whether the increase in the number of alarms in the previous time interval is not less than X times;

[0094] The mean over-limit judgment submodule is used to take the average value of the number of alarms of the P group from the previous time interval to the previous P time intervals as the first average value, and judge whether the first average value is not less than Y times, or take the average value of the number of alarms of the P group from the previous time interval to the previous P time intervals as the first average value, if there is a time interval with a number of alarms of 0 from the previous time interval to the previous P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the first average value, take the average value of the number of alarms of the P group from the previous (P+1) time interval to the previous 2*P time intervals as the second average value, if there is a time interval with a number of alarms of 0 from the previous (P+1) time interval to the previous 2*P time intervals, the time interval with a number of alarms of 0 is not included in the calculation of the second average value, and judge whether the first average value is greater than the second average value by c% or more;

[0095] The short-time frequent judgment submodule is used to calculate the time difference between every two adjacent alarms within a time interval, that is, the interval between the reset of the (Q-1)th alarm and the activation of the Qth alarm, Q is a positive integer greater than 2, and the interval is less than R hours, which is too short. It is judged whether the interval is too short for Z times or more in a time interval.

[0096] The present invention also discloses an electronic device, comprising at least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned early warning method for abnormality of the hydraulic operating mechanism of a circuit breaker.

[0097] The present invention also discloses a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the above-mentioned early warning method for abnormality of a hydraulic operating mechanism of a circuit breaker.

[0098] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A circuit breaker hydraulic operating mechanism abnormality early warning method based on alarm information, It is characterized in that include: S1. Obtain various initial monitoring alarm information of substation equipment; S2. Preliminarily clean the various types of initial monitoring alarm information, filter out irregular information, and obtain cleaned first monitoring alarm information; S3. Based on keywords related to the hydraulic operating mechanism of the circuit breaker, extract relevant monitoring alarm information related to the keywords from the first monitoring alarm information; S4. judging whether there is a defect in the hydraulic operating mechanism of the circuit breaker based on the quantity change trend of the relevant monitoring alarm information within a certain time range, and if so, issuing an early warning; The quantity change trend of the relevant monitoring alarm information includes a continuous growth type, and the continuous growth type is specifically: A. Set up M The number of alarms corresponding to the time interval to the previous time interval are , 、 ,and 、 The size of satisfies continuous growth, that is , M is a positive integer not less than 5; B. to In the above example, it is allowed that there is no more than ( M -1) / 4 descending or unchanged and then ascending processes, and the descending or unchanged and then ascending process does not involve and , the process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, , and The absolute value of ≤50%, a is a positive integer, and a ∈[2, M-2 ); C. to In the above example, it is allowed that there is no more than ( M -1) / 4 descending or unchanged and then ascending process, which involves or The process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, it meets one of the following two conditions: 1) and ,and The absolute value of ≤50%, 2) and ,and The absolute value of ≤50%; If A, B or C is met, an early warning is issued; Or, the quantity change trend of the relevant monitoring alarm information includes a mean value exceeding the limit type, and the mean value exceeding the limit type is specifically: D. Take the previous time interval to the previous P time interval P The average value of the number of group alarms is a first average value, and the first average value is not less than Y If the time interval between the previous 1 and the previous P If there is a time interval with 0 alarm times in the time interval, the time interval with 0 alarm times is not included in the calculation of the first average value, where: Y It varies depending on the model of the circuit breaker operating mechanism, the manufacturer and the requirements for early warning accuracy control. P It is mainly determined based on the timeliness of warning and the accuracy of judgment; E. Take the previous time interval to the previous P time interval P The average value of the number of group alarms is the first average value. P If there is a time interval with 0 alarm times among the time intervals, the time interval with 0 alarm times is not included in the calculation of the first average value, and the first ( P+1 ) time intervals to the previous 2* P time interval P The average value of the group alarm times is the second average value. P +1) time intervals to the previous 2* P If there is a time interval with 0 alarm times in the time intervals, the time interval with 0 alarm times is not included in the calculation of the second average value, and the first average value is greater than the second average value. c % and above, c is a positive number, c It varies according to the model of the circuit breaker operating mechanism, the manufacturer and the requirements for early warning accuracy control. P It is mainly determined based on the timeliness of warning and the accuracy of judgment; If D or E is met, then a warning is issued; or, The quantity change trend of the relevant monitoring alarm information includes a short-term frequent type, and the short-term frequent type is specifically: Calculate the time difference between every two adjacent alarms within a time interval, that is, the ( Q-1 ) The first alarm reset and the Q The interval between the activation of the alarm, Q is a positive integer greater than 2, and the interval time is less than R Hours means the interval is too short and they appear continuously within a time interval. Z If the interval between the two events is too short, an early warning will be issued. R and Z It varies depending on the model, manufacturer, and warning accuracy and timeliness requirements of the circuit breaker operating mechanism.

2. According to claim 1, a circuit breaker hydraulic operating mechanism abnormality early warning method based on alarm information, It is characterized in that The various types of initial monitoring alarm information are provided by the power system D5000 or OPEN3000 system or the new generation centralized control station monitoring system.

3. The circuit breaker hydraulic operating mechanism abnormality early warning method based on alarm information according to claim 1, It is characterized in that The keywords are related to oil pumps.

4. A circuit breaker hydraulic operating mechanism abnormality early warning method based on alarm information according to claim 1 or 3, It is characterized in that In S3, the keywords related to the circuit breaker hydraulic operating mechanism include one or more of oil pump operation, oil pump start, oil pump pressure timeout, oil pump pressure, and oil pump motor start.

5. A circuit breaker hydraulic operating mechanism abnormality early warning system based on alarm information, used to execute a circuit breaker hydraulic operating mechanism abnormality early warning method based on alarm information according to any one of claims 1 to 4, It is characterized in that include: Acquisition module: used to obtain various initial monitoring alarm information of substation equipment; Cleaning module: used for preliminarily cleaning various types of initial monitoring alarm information, filtering out irregular information, so as to obtain cleaned first monitoring alarm information; A screening module: configured to extract relevant monitoring alarm information related to the keyword from the first monitoring alarm information based on the keyword related to the circuit breaker hydraulic operating mechanism; Judgment module: used to judge whether there is a defect in the hydraulic operating mechanism of the circuit breaker based on the quantitative change trend analysis of a number of the related monitoring alarm information within a certain time range, and if so, issue an early warning; The judgment module includes a continuous growth judgment submodule, and the continuous growth judgment submodule is used to judge the previous M Whether the number of alarms corresponding to the previous time interval meets the requirement of continuous growth, that is, assuming that the previous M The number of alarms corresponding to the time interval to the previous time interval are , 、 ,judge 、 Whether the size of satisfies continuous growth, that is, Is it established? M is a positive integer not less than 5; or to Is there a value that is not greater than ( M -1) / 4 descending or unchanged and then ascending processes, and the descending or unchanged and then ascending process does not involve and The process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, whether it meets and The absolute value of ≤50%, a is a positive integer, and a ∈[2, M-2 );or to Is there a value that is not greater than ( M -1) / 4 descending or unchanged and then ascending process, which involves or The process of falling or unchanged and then rising means that the falling amplitude does not exceed 50% and after falling or unchanged, it rises again and exceeds the previous two values, that is, it is judged whether one of the following two conditions is met: 1) and ,and The absolute value of ≤50%, 2) and ,and The absolute value of ≤50%; or, The judgment module includes a mean over-limit judgment submodule, which is used to take the time interval from the previous one to the previous one. P time interval P The average value of the number of group alarms is the first average value. P If there is a time interval with 0 alarm times in the time intervals, the time interval with 0 alarm times is not included in the calculation of the first average value, and it is determined whether the first average value is not less than Y times, or take the previous time interval to the previous P time interval P The average value of the number of group alarms is the first average value. P If there is a time interval with 0 alarm times among the time intervals, the time interval with 0 alarm times is not included in the calculation of the first average value, and the first ( P+1 ) time intervals to the previous 2* P time interval P The average value of the group alarm times is the second average value. P +1) time intervals to the previous 2* P If there is a time interval with 0 alarm times in the time intervals, the time interval with 0 alarm times is not included in the calculation of the second average value, and it is determined whether the first average value is greater than the second average value. c % and above; Alternatively, the judgment module includes a short-time frequent judgment submodule, and the short-time frequent judgment submodule is used to calculate the time difference between every two adjacent alarms within a time interval, that is, the first ( Q-1 ) The first alarm reset and the Q The interval between the activation of the alarm, Q is a positive integer greater than 2, and the interval time is less than R Hours means the interval is too short. Check whether it occurs continuously within a time interval. Z The time interval between the occurrences of the above two times is too short.

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