CN115691069A - Circuit breaker hydraulic operating mechanism abnormity early warning method and system based on warning information - Google Patents

Abstract

The invention relates to the technical field of power equipment, and discloses an abnormality early warning method and system for a hydraulic operating mechanism of a circuit breaker based on warning information, wherein S1, various kinds of initial monitoring warning information of substation equipment are obtained; s2, preliminarily cleaning various kinds of initial monitoring alarm information, and filtering out non-standard information to obtain cleaned first monitoring alarm information; s3, extracting related monitoring alarm information related to the key words from the first monitoring alarm information based on the key words related to the hydraulic operating mechanism of the circuit breaker; and S4, judging whether the hydraulic operating mechanism of the circuit breaker has defects or not based on the quantity change trend of the plurality of related monitoring alarm information within a certain time range, and if so, carrying out early warning. The invention can effectively track and analyze the state of the hydraulic operating mechanism of the circuit breaker by utilizing the provided monitoring information analysis method and criterion.

Description

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

Technical Field

The invention relates to the technical field of power equipment, in particular to a circuit breaker hydraulic operating mechanism abnormity early warning method and system based on alarm information.

Background

The breaker hydraulic operating mechanism is used as an important component of the breaker, the safety and reliability of the breaker hydraulic operating mechanism directly influence the normal on-off of the breaker, the defects of the breaker hydraulic operating mechanism are effectively found in time and eliminated in time, the service life of the breaker hydraulic operating mechanism can be effectively prolonged, the on-off performance of the breaker is prevented from being influenced, and the risk brought to the safe and stable operation of a power grid and equipment is avoided.

Whether the circuit breaker operating mechanism exists unusually is surveyd through daily mainly patrolling and examining at present, but the transformer substation circuit breaker equipment is numerous, and present most transformer substations are unmanned on duty, patrol and examine and have certain limitation and hysteresis quality to finding the equipment defect. In addition, there is also a method for performing auxiliary judgment by monitoring alarm information, but the judgment method by monitoring alarm information 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 hydraulic operating mechanism of the circuit breaker is easily submerged in other alarm information, so that the attention of monitoring operators is not easily attracted; 2) Even if the monitoring alarm information is paid more attention, the utilization of the monitoring alarm information is limited to the judgment of the state value contained in the current alarm information, and the trend analysis is not performed in combination with the big data of the historical monitoring alarm information, so that the abnormity or defect of the hydraulic operating mechanism of the circuit breaker is difficult to find in advance and the early warning is performed in time.

Disclosure of Invention

The invention provides an abnormality early warning method and system for a hydraulic operating mechanism of a circuit breaker based on warning information, which can effectively track and analyze the state of the hydraulic operating mechanism of the circuit breaker by utilizing the provided analysis method and criterion based on monitoring warning information, and can find abnormality as soon as possible when the state has larger deviation value (sudden change or short-time frequent) or continuous deterioration (gradual change) condition, so that operation and maintenance personnel can check and eliminate the defect on site as soon as possible, thereby avoiding the occurrence of circuit breaker failure and power grid operation risk.

The invention is realized by the following technical scheme:

a circuit breaker hydraulic operating mechanism abnormity early warning method based on warning information comprises the following steps:

s1, acquiring various initial monitoring alarm information of substation equipment;

s2, preliminarily cleaning various kinds of initial monitoring alarm information, and filtering out non-standard information to obtain cleaned first monitoring alarm information;

s3, extracting related monitoring alarm information related to the key words from the first monitoring alarm information based on the key words related to the hydraulic operating mechanism of the circuit breaker;

and S4, judging whether the hydraulic operating mechanism of the circuit breaker has defects or not based on the quantity change trend of the plurality of related monitoring alarm information within a certain time range, and if so, carrying out early warning.

As optimization, various types of initial monitoring alarm information are provided by a power system D5000 or OPEN3000 system or a new generation centralized control station monitoring system.

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

As an optimization, in S3, the keywords related to the hydraulic operating mechanism of the circuit breaker include one or more of operation of the oil pump, starting of the oil pump, overtime of the oil pump, starting of the oil pump, and starting of the oil pump motor.

As an optimization, the number change trend of the related monitoring alarm information includes a continuous increase, and the continuous increase specifically includes:

A. setting the alarm times corresponding to the first M time intervals to the first 1 time intervals as N _M …N ₂ 、N ₁ And N is _M …N ₂ 、N ₁ Is of a size that continuously increases, i.e. N _M ＜N _M-1 ＜…＜N ₂ ＜N ₁ M is a positive integer not less than 5;

B、N _M to N ₁ In (b), not more than (M-1)/4 falling or constant re-rising processes are allowed to exist, and the falling or constant re-rising processes do not involve N _M And N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50 percent and the ascending appears after the descending or constant ascending and exceeds the first 2 values, namely N _M ＜N _M-1 ＜…＜N _M-a ＜N _M-(a+2) …＜N ₁ ，N _M-(a+1) ≤N _M-a And (N) _M-(a+1) -N _M-a )/N _M-a The absolute value of a is less than or equal to 50 percent, a is a positive integer and belongs to the group of [2,M-2 ];

C、N _M to N ₁ In (2), not more than (M-1)/4 descending or constant re-ascending processes involving N are allowed to exist _M Or N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50% and the ascending occurs after the descending or constant ascending and exceeds the first 2 values, namely, one of the following two conditions is satisfied: 1) N is a radical of _M ≥N _M-1 ，N _M-1 ＜N _M-2 And N is _M-2 ＞N _M And (N) _M-1 -N _M )/N _M Absolute value of less than or equal to 50%, 2) N _M-1 ≥N _M-2 ，N _M-2 ＜N _M-3 And N is _M-3 ＞N _M-1 And (N) _M-2 -N _M-1 )/N _M-1 The absolute value of the (A) is less than or equal to 50 percent;

and if the A, B or C is met, early warning is carried out.

As optimization, the quantity variation trend of the related monitoring alarm information includes a sudden increase type, and the sudden increase type specifically includes:

and comparing the alarm frequency of the previous time interval with the alarm frequency of the next previous time interval, wherein the increment of the alarm frequency of the previous time interval is not less than X, and X is different according to the model and the manufacturer of the circuit breaker operating mechanism and the control requirement of the early warning precision.

As optimization, the quantity variation trend of the related monitoring alarm information includes a mean value overrun type, which specifically includes:

D. taking the average value of P groups of alarm times from the first 1 time interval to the first P time intervals as a first average value, wherein the first average value is not less than Y times, and if the alarm times are 0 in the first 1 time interval to the first P time intervals, the time intervals with the alarm times of 0 are not included in the calculation of the first average value, wherein Y is different according to the model of a circuit breaker operating mechanism, different manufacturers and different control requirements of early warning precision, and P is mainly determined according to early warning timeliness and judgment precision;

E. taking the average value of the P groups of alarm times from the first 1 time interval to the first P time intervals as a first average value, if the alarm times are 0 in the first 1 time interval to the first P time intervals, the time interval with the alarm times being 0 is not included in the calculation of the first average value, taking the average value of the P groups of alarm times from the first (P + 1) time intervals to the first 2*P time intervals as a second average value, if the alarm times are 0 in the first (P + 1) time intervals to the first 2*P time intervals, the time interval with the alarm times being 0 is not included in the calculation of the second average value, and the first average value is larger than the second average value by c% or more, c is a positive number, and P is mainly determined according to early warning timeliness and judgment precision;

and if D or E is met, early warning is carried out.

As optimization, the quantity variation trend of the related monitoring alarm information includes a short-time frequency type, and the short-time frequency type specifically includes:

and calculating the time difference between every two adjacent alarms in the previous time interval, namely the time interval between the (Q-1) th alarm resetting and the Q-th alarm starting, wherein Q is a positive integer greater than 2, the time interval is too short when the time interval is less than R hours, and the alarm is given when the time intervals of Z times or more continuously appear to be too short in one time interval, wherein R and Z are different according to the requirements of the model, the manufacturer, the alarm precision and the timeliness of the circuit breaker operating mechanism.

The invention also discloses a circuit breaker hydraulic operating mechanism abnormity early warning system based on monitoring warning information, which comprises:

an acquisition module: the method comprises the steps of obtaining various initial monitoring alarm information of the substation equipment;

a cleaning module: the system comprises a data processing module, a data processing module and a data processing module, wherein the data processing module is used for processing initial monitoring alarm information;

a screening module: the monitoring alarm information processing device is used for extracting relevant monitoring alarm information related to a keyword from the first monitoring alarm information based on the keyword related to the hydraulic operating mechanism of the circuit breaker;

a judging module: and the method is used for analyzing the quantity change trend of a plurality of relevant monitoring alarm information within a certain time range, judging whether the hydraulic operating mechanism of the circuit breaker has defects or not, and if so, carrying out early warning.

As optimization, the judging module comprises a continuous growth judging sub-module, a sudden growth judging sub-module, a mean value overrun judging sub-module and a short-time frequent judging sub-module, wherein,

the continuous increase judging submodule is used for judging whether the alarm times corresponding to the first M time intervals to the first 1 time intervals meet continuous increase, namely, the alarm times corresponding to the first M time intervals to the first 1 time intervals are respectively N _M 、N _M-1 …N ₂ 、N ₁ Judgment of N _M …N ₂ 、N ₁ Whether or not the size of (c) satisfies a continuous increase, i.e., whether or not N is satisfied _M ＜N _M-1 ＜…＜N ₂ ＜N ₁ M is a positive integer not less than 5; or N _M To N ₁ Whether there are no more than (M-1)/4 falling or constant re-rising processes, and the falling or constant re-rising processes do not involve N _M And N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50 percent and the ascending appears after the descending or constant ascending and exceeds the first 2 values, namely 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 a is less than or equal to 50 percent, a is a positive integer,and a is E [2,M-2); or N _M To N ₁ Whether there are not more than (M-1)/4 falling or constant re-rising processes which involve N _M Or N _M-1 The descending or invariable ascending process means that the descending amplitude does not exceed 50% and the ascending occurs after the descending or invariable and exceeds the first 2 values, namely whether the following two conditions are met or not is judged: 1) N is a radical of _M ≥N _M-1 ，N _M-1 ＜N _M-2 And N is _M-2 ＞N _M And (N) _M-1 -N _M )/N _M Absolute value of less than or equal to 50%, 2) N _M-1 ≥N _M-2 ，N _M-2 ＜N _M-3 And N is _M-3 ＞N _M-1 And (N) _M-2 -N _M-1 )/N _M-1 The absolute value of the ratio is less than or equal to 50 percent;

the sudden increase judging submodule is used for comparing the alarm frequency of the previous time interval with the alarm frequency of the next previous time interval and judging whether the increase of the alarm frequency of the previous time interval is not less than X times or not;

the average overrun judging submodule is used for taking the average value of the P groups of alarm times from the first 1 time interval to the first P time intervals as a first average value, judging whether the first average value is not less than Y times, or taking the average value of the P groups of alarm times from the first 1 time interval to the first P time intervals as the first average value, if the alarm times from the first 1 time interval to the first P time intervals are time intervals of 0, the time intervals of 0 alarm times are not included in the calculation of the first average value, taking the average value of the P groups of alarm times from the first (P + 1) time intervals to the first 2*P time intervals as a second average value, if the alarm times from the first (P + 1) time intervals to the first 2*P time intervals are time intervals of 0, the time intervals of 0 alarm times are not included in the calculation of the second average value, and judging whether the first average value is larger than the second average value by c% or more;

the short-time frequent judgment sub-module is used for calculating the time difference between every two adjacent alarms in a time interval, namely the time interval between the resetting of the (Q-1) th alarm and the starting of the Q-th alarm, Q is a positive integer greater than 2, the time interval is too short when the time interval is less than R hours, and whether the situation that the time interval of Z times or more continuously appears in the time interval is too short is judged.

The invention also discloses an electronic device, which comprises at least one processor and a memory which is in communication connection with the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method for early warning of the abnormality of the hydraulic operating mechanism of the circuit breaker.

The invention also discloses a storage medium which stores a computer program, and the computer program is executed by a processor to realize the early warning method for the abnormity of the hydraulic operating mechanism of the circuit breaker.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the invention innovatively uses the alarm information quantity related to the oil pump as the state parameter for judging the state of the hydraulic operating mechanism of the circuit breaker, provides four methods suitable for analyzing the alarm trend of the hydraulic operating mechanism of the circuit breaker, clearly provides the criterion for helping to early warn the abnormity or the defect of the hydraulic operating mechanism of the circuit breaker, and can effectively track and analyze the state of the hydraulic operating mechanism of the circuit breaker by using the method and the system, when the state has larger deviation value (mutation) in the past or the state has continuous deterioration (gradual change), the invention can discover the defect that operation and maintenance personnel can go to the site to check and eliminate the defect as soon as possible, thereby avoiding the circuit breaker failure and the power grid operation risk.

Drawings

In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that those skilled in the art may also derive other related drawings based on these drawings without inventive effort. In the drawings:

fig. 1 is a flowchart of an abnormality warning method for a hydraulic operating mechanism of a circuit breaker based on warning information according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Examples

A circuit breaker hydraulic operating mechanism abnormity early warning method based on warning information comprises the following steps:

s1, acquiring various initial monitoring alarm information of substation equipment;

in this embodiment, the source of each type of initial monitoring alarm information is an electric power system D5000 or OPEN3000 system or a new generation centralized control station monitoring system, and the related monitoring alarm information of the hydraulic operating mechanism of the circuit breaker is also provided by the electric power system D5000/OPEN3000 or the new generation centralized control station monitoring system.

S2, preliminarily cleaning various kinds of initial monitoring alarm information, and filtering out non-standard information to obtain cleaned first monitoring alarm information; the non-standard information comprises messy codes in the monitoring information content, unclear monitoring information meaning, inaccurate mapping between the monitoring information and the equipment ledger, wrong type division of the monitoring alarm information and the like.

S3, extracting related monitoring alarm information related to the key words from the first monitoring alarm information based on the key words related to the hydraulic operating mechanism of the circuit breaker; in this embodiment, the keywords related to the hydraulic operating mechanism of the circuit breaker include one or more of operation of the oil pump, start of the oil pump, time-out of pressure of the oil pump, and start of the motor of the oil pump. The early warning method of the invention is mainly started from the related warning information of the oil pump to carry out early warning on the abnormity of the hydraulic operating mechanism of the circuit breaker, the oil pump belongs to a component of the hydraulic operating mechanism of the circuit breaker, and the warning information related to the oil pump is the specific warning content shown by the key words.

And S4, judging whether the hydraulic operating mechanism of the circuit breaker has defects or not based on the quantity change trend of the plurality of related monitoring alarm information within a certain time range, and if so, carrying out early warning.

The quantity change trend of the related monitoring alarm information comprises a continuous growth type, a sudden growth type, a mean value overrun type and a short-time frequent type, and the early warning can be carried out when any change trend is met.

In this embodiment, the quantity change trend of the related monitoring alarm information includes a continuous increase type, and the continuous increase type specifically includes:

A. setting the alarm times corresponding to the first M time intervals to the first 1 time intervals as N _M …N ₂ 、N ₁ And N is _M …N ₂ 、N ₁ Is of a size that continuously increases, i.e. N _M ＜N _M-1 ＜…＜N ₂ ＜N ₁ M is a positive integer not less than 5;

B、N _M to N ₁ In (b), not more than (M-1)/4 falling or constant re-rising processes are allowed to exist, and the falling or constant re-rising processes do not involve N _M And N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50 percent and the ascending appears after the descending or constant ascending and exceeds the first 2 values, namely N _M ＜N _M-1 ＜…＜N _M-a ＜N _M-(a+2) …＜N ₁ ，N _M-(a+1) ≤N _M-a And (N) _M-(a+1) -N _M-a )/N _M-a The absolute value of a is less than or equal to 50 percent, a is a positive integer and a belongs to [2,M-2 ];

C、N _M to N ₁ In (2), not more than (M-1)/4 descending or constant re-ascending processes involving N are allowed to exist _M Or N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50% and the ascending occurs after the descending or constant ascending and exceeds the first 2 values, namely, one of the following two conditions is satisfied: 1) N is a radical of _M ≥N _M-1 ，N _M-1 ＜N _M-2 And N is _M-2 ＞N _M And (N) _M-1 -N _M )/N _M Absolute value of less than or equal to 50%, 2) N _M-1 ≥N _M-2 ，N _M-2 ＜N _M-3 And N is _M-3 ＞N _M-1 And (N) _M-2 -N _M-1 )/N _M-1 The absolute value of the ratio is less than or equal to 50 percent;

and if the A, B or C is met, early warning is carried out.

The time interval here is set according to the actual situation. The time interval is not limited to 1 day (24 hours), and can be self-determined according to the requirements of early warning accuracy and timeliness.

For example, the time interval may be half a day (12 hours), then N1 is the number of alarms for the first 12 hours, N2 is the number of alarms for the first 12-24 hours, and N3 is the number of alarms for the first 24-36 hours; for example, the time interval may also be 3 hours, so that N1 is the number of alarms in the first 3 hours, N2 is the number of alarms in the first 3-6 hours, N3 is the number of alarms in the first 6-9 hours, and so on. The time interval of the embodiment is to count the number of alarm messages per day in units of days.

A. Setting the alarm times of the first 5 days, the first 4 days, the first 3 days, the first 2 days and the first 1 days as N5, N4, N3, N2 and N1 respectively, and meeting the condition that N5 is more than N4 and more than N3 and more than N2 and more than N1;

B. 1 of the data (M =5 (M-1)/4=1) is reduced (reduced by 50% or less) or equal to the data of the previous day, such as N5 < N4 < N3 < N1 (3 changes formed by 4 data all show increase), and N2 is less than or equal to N3 and the absolute value of (N2-N3)/N3 is less than or equal to 50%;

C. the alarm times of the earliest three time intervals, namely N5 is more than or equal to N4, N4 is less than N3, N3 is more than N5, meanwhile, the absolute value of (N4-N5)/N5 is less than or equal to 50%, and other links continue to increase progressively (namely N3 is less than N2 and less than N1).

The early warning can be realized when the three conditions are met.

For example, today is 8 months and 4 days, the alarm times of the previous day are alarm times of 8 months and 3 days, the alarm times of the previous 2 days are alarm times of 8 months and 2 days (not including 8 months and 3 days), the alarm times of the previous 3 days are alarm times of 8 months and 1 day (not including 8 months and 2 days and 3 days), and so on.

The alarm times of the first 5 days and the first 4 days … … and the first 1 day are 1,3,4,8 and 10 respectively, so that the alarm time of the next time interval (the next day) is always larger than the alarm time of the previous time interval (the previous day), and the condition A is met;

since the case a may be severe, it is appropriately relaxed to allow a case where there are no more than (M-1)/4 drops (or constant) re-rises in the middle, where the number of alarms in the next time interval is not more than 50% (or equal to 0%) lower than the number of alarms in the previous time interval and the number of alarms in the next time interval must rise, and the number of alarms in the next time interval is greater than the number of alarms in the previous two time intervals, which is the case B, where the following first 2 sets of data satisfy the case B:

1)1，3，6，5，7

2)1，3，6，6，7

3)1，5，4，4，5

4)1，2，5，5，5

the total number of data in 5 time intervals is (M-1)/4=1, so that under the condition that the A condition is not met, the situation that the data is descended (or unchanged) for 1 time and then ascended is allowed to occur according to the above description, and meanwhile, the alarm number of other time intervals still presents an ascending trend, the early warning condition is met;

group 1), although the condition a is not satisfied (a descending condition occurs in 6 → 5), the process of 6 → 5 → 7 satisfies the condition of descending (6 → 5) and then ascending (5 → 7), and | (5-6) |/6 is constructed by 50% and 7>5 and 7>6, and the condition of descending or constant does not occur in other links any more, and warning is given if the condition B is satisfied;

group 2), although the condition a is not satisfied (6 → 6 does not belong to the growth case), the process of 6 → 6 → 7 satisfies the conditions from unchanged (6 → 6) to re-ascending (6 → 7), and | (6-6) |/6 is restricted to 50%, and 7>6, and the other links do not descend or change any more, and the condition B is satisfied, an early warning is given;

group 3), the link 5 → 4 → 4, shows a drop of 5 → 4 but immediately 4 → 4 is not a growing process, so the group data does not satisfy the pre-warning condition;

group 4), link 5 → 5 → 5, has the invariant process of 5 → 5 but no growth (also 5 → 5), so this group does not satisfy the pre-warning condition.

In this embodiment, the quantity variation trend of the related monitoring alarm information includes a sudden increase type, and the sudden increase type specifically includes:

and comparing the alarm frequency of the previous time interval with the alarm frequency of the next previous time interval, wherein the increment of the alarm frequency of the previous time interval is not less than X, and X is different according to the model and the manufacturer of the circuit breaker operating mechanism and the control requirement of the early warning precision.

Setting the time interval as days, wherein X is 10, the increment of the total alarm frequency of the previous day is more than or equal to 10 times compared with the total alarm frequency of the previous day, namely, for example, the current day is 5 months and 20 days, the previous day is 5 months and 19 days, the next day is 5 months and 18 days, the alarm frequency of 5 months and 19 days is 15 times, and the increment is more than or equal to 10 times (the increment is 12 times) compared with the alarm frequency of 5 months and 18 days, judging that the hydraulic operating mechanism of the circuit breaker is abnormal, and immediately giving an early warning.

In this embodiment, the quantity variation trend of the related monitoring alarm information includes a mean value overrun type, which specifically includes:

D. taking the average value of P groups of alarm times from the first 1 time interval to the first P time intervals as a first average value, wherein the first average value is not less than Y times, and if the alarm times are 0 in the first 1 time interval to the first P time intervals, the time intervals with the alarm times of 0 are not included in the calculation of the first average value, wherein Y is different according to the model of the circuit breaker operating mechanism, the manufacturer and the early warning precision control requirements;

E. taking an average value of P groups of alarm times from the first 1 time interval to the first P time intervals as a first average value, if a time interval with the alarm times being 0 exists from the first 1 time interval to the first P time intervals, the time interval with the alarm times being 0 is not included in the calculation of the first average value, taking an average value of P groups of alarm times from the first (P + 1) time intervals to the first 2*P time intervals as a second average value, if a time interval with the alarm times being 0 exists from the first (P + 1) time intervals to the first 2*P time intervals, the time interval with the alarm times being 0 is not included in the calculation of the second average value, the first average value is larger than the second average value by c% or more, c is a positive number, and c is different according to the model of a breaker operating mechanism, the manufacturer and the control requirement of early warning precision but is usually larger than or equal to 20;

and if D or E is met, early warning is carried out.

For example, the time interval is set to day, Y is 5,c is 20, the average value of 10 sets of alarm amounts from the previous 1 day to the previous 10 days is taken (if the value of a certain day is 0, the average value is not included in calculation), and the value is more than or equal to 5 times; the average value of nearly 1-10 scales is 20% or more greater than the average value of nearly 11-20 days (if the value of a certain day is 0, the calculation of the average value is not included); if the above requirements are met, the alarm can be given.

In this embodiment, the quantity variation trend of the related monitoring alarm information includes a short-time frequent type, and the short-time frequent type specifically includes:

and calculating the time difference between every two adjacent alarms in the previous time interval, namely the time interval between the (Q-1) th alarm reset and the Q-th alarm start, wherein Q is a positive integer larger than 2, the time interval is too short when the time interval is smaller than R hours, and the early warning is given when the time interval of Z times or more is too short continuously appears in one time interval, wherein R and Z are different according to the model, the manufacturer, the early warning precision and the timeliness requirements of the circuit breaker operating mechanism.

For example, the time interval is set to be day, the value of R is 2,Z is 2, the time interval between every two adjacent alarms in the previous day is calculated, namely the time interval between the start of the nth alarm and the return of the (N-1) th alarm, the time interval is too short when the time interval is less than 2 hours, and the alarm is given if the time interval is too short for 2 times or more continuously in one day.

The invention also discloses a circuit breaker hydraulic operating mechanism abnormity early warning system based on monitoring alarm information, which comprises:

an acquisition module: the method comprises the steps of obtaining various initial monitoring alarm information of the substation equipment;

a cleaning module: the system comprises a data processing module, a data processing module and a data processing module, wherein the data processing module is used for processing initial monitoring alarm information;

a screening module: the monitoring alarm information processing device is used for extracting relevant monitoring alarm information related to a keyword from the first monitoring alarm information based on the keyword related to the hydraulic operating mechanism of the circuit breaker;

a judging module: and the monitoring and warning device is used for analyzing the quantity change trend of a plurality of relevant monitoring and warning information within a certain time range, judging whether the hydraulic operating mechanism of the circuit breaker has defects or not, and if so, carrying out early warning.

In this embodiment, the judging module comprises a continuous growth judging sub-module, a burst judgment sub-module, a mean value overrun judging sub-module and a short-time frequent judging sub-module, wherein,

the continuous increase judging submodule is used for judging whether the alarm times corresponding to the first M time intervals to the first 1 time intervals meet continuous increase, namely, the alarm times corresponding to the first M time intervals to the first 1 time intervals are respectively N _M 、N _M-1 …N ₂ 、N ₁ Judgment of N _M …N ₂ 、N ₁ Whether or not the size of (c) satisfies a continuous increase, i.e., whether or not N is satisfied _M ＜N _M-1 ＜…＜N ₂ ＜N ₁ M is a positive integer not less than 5; or N _M To N ₁ Whether there are no more than (M-1)/4 falling or constant re-rising processes, and the falling or constant re-rising processes do not involve N _M And N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50 percent and the ascending appears after the descending or constant ascending and exceeds the first 2 values, namely 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 a is less than or equal to 50 percent, a is a positive integer and belongs to the group of [2,M-2 ]; or N _M To N ₁ In is thatWhether there are not more than (M-1)/4 descending or constant re-ascending processes involving N _M Or N _M-1 The descending or invariable ascending process means that the descending amplitude does not exceed 50% and the ascending occurs after the descending or invariable and exceeds the first 2 values, namely whether the following two conditions are met or not is judged: 1) N is a radical of _M ≥N _M-1 ，N _M-1 ＜N _M-2 And N is _M-2 ＞N _M And (N) _M-1 -N _M )/N _M Absolute value of less than or equal to 50%, 2) N _M-1 ≥N _M-2 ，N _M-2 ＜N _M-3 And N is _M-3 ＞N _M-1 And (N) _M-2 -N _M-1 )/N _M-1 The absolute value of the (A) is less than or equal to 50 percent;

the sudden increase judging submodule is used for comparing the alarm times of the previous time interval with the alarm times of the next previous time interval and judging whether the increase of the alarm times of the previous time interval is not less than X times or not;

the mean value overrun judging submodule is used for taking the mean value of the P groups of alarm times from the first 1 time interval to the first P time intervals as a first mean value, judging whether the first mean value is not less than Y times or not, or taking the mean value of the P groups of alarm times from the first 1 time interval to the first P time intervals as the first mean value, if the alarm times from the first 1 time interval to the first P time intervals are 0 time intervals, the time intervals with the alarm times of 0 are not included in the calculation of the first mean value, taking the mean value of the P groups of alarm times from the first (P + 1) time intervals to the first 2*P time intervals as a second mean value, if the alarm times from the first (P + 1) time intervals to the first 2*P time intervals are 0 time intervals, the time intervals with the alarm times of 0 are not included in the calculation of the second mean value, and judging whether the first mean value is larger than the second mean value by c% or more;

the short-time frequent judgment sub-module is used for calculating the time difference between every two adjacent alarms in a time interval, namely the time interval between the (Q-1) th alarm resetting and the Q-th alarm starting, Q is a positive integer greater than 2, the time interval is too short when the time interval is less than R hours, and judging whether the Z times or more than Z times of time intervals are too short continuously in the time interval.

The invention also discloses an electronic device, which comprises at least one processor and a memory which is in communication connection with the at least one processor; 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 method for early warning the abnormity of the hydraulic operating mechanism of the circuit breaker.

The invention also discloses a storage medium which stores a computer program, and the computer program is executed by a processor to realize the early warning method for the abnormity of the hydraulic operating mechanism of the circuit breaker.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A breaker hydraulic operating mechanism abnormity early warning method based on alarm information is characterized by comprising the following steps:

s1, acquiring various initial monitoring alarm information of substation equipment;

s2, preliminarily cleaning various kinds of initial monitoring alarm information, and filtering out non-standard information to obtain cleaned first monitoring alarm information;

s3, extracting related monitoring alarm information related to the key words from the first monitoring alarm information based on the key words related to the hydraulic operating mechanism of the circuit breaker;

and S4, judging whether the hydraulic operating mechanism of the circuit breaker has defects or not based on the quantity change trend of the plurality of related monitoring alarm information within a certain time range, and if so, carrying out early warning.

2. The method for early warning of the abnormality of the hydraulic operating mechanism of the circuit breaker according to claim 1, wherein the various types of initial monitoring warning information are provided by a power system D5000 or an OPEN3000 system or a new generation centralized control station monitoring system.

3. The circuit breaker hydraulic operating mechanism abnormality early warning method based on the warning information as claimed in claim 1, wherein the keyword is related to an oil pump.

4. The method for early warning of the abnormality of the hydraulic operating mechanism of the circuit breaker according to claim 1 or 3, wherein in S3, the keywords related to the hydraulic operating mechanism of the circuit breaker include one or more of operation of an oil pump, start of the oil pump, time-out of the pressure of the oil pump, and start of a motor of the oil pump.

5. The method for early warning of the abnormality of the hydraulic operating mechanism of the circuit breaker based on the alarm information as claimed in claim 1, wherein the trend of the quantity change of the related monitoring alarm information includes a continuous increase, and the continuous increase is specifically:

A. setting the alarm times corresponding to the first M time intervals to the first 1 time intervals as N _M 、N _M-1 …N ₂ 、N ₁ And N is _M …N ₂ 、N ₁ Is of a size that continuously increases, i.e. N _M ＜N _M-1 ＜…＜N ₂ ＜N ₁ M is a positive integer not less than 5;

B、N _M to N ₁ In (b), not more than (M-1)/4 falling or constant re-rising processes are allowed to exist, and the falling or constant re-rising processes do not involve N _M And N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50 percent and the ascending occurs after the descending or constant ascending and exceeds the first 2 values, namely N _M ＜N _M-1 ＜…＜N _M-a ＜N _M-(a+2) …＜N ₁ ，N _M-(a+1) ≤N _M-a And (a)N _M-(a+1) -N _M-a )/N _M-a The absolute value of a is less than or equal to 50 percent, a is a positive integer and belongs to the group of [2,M-2 ];

C、N _M to N ₁ In (2), not more than (M-1)/4 descending or constant re-ascending processes involving N are allowed to exist _M Or N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50% and the ascending occurs after the descending or constant ascending and exceeds the first 2 values, namely, one of the following two conditions is satisfied: 1) N is a radical of hydrogen _M ≥N _M-1 ，N _M-1 ＜N _M-2 And N is _M-2 ＞N _M And (N) _M-1 -N _M )/N _M Absolute value of less than or equal to 50%, 2) N _M-1 ≥N _M-2 ，N _M-2 ＜N _M-3 And N is _M-3 ＞N _M-1 And (N) _M-2 -N _M-1 )/N _M-1 The absolute value of the ratio is less than or equal to 50 percent;

and if the A, B or C is met, early warning is carried out.

6. The method for early warning of abnormality of hydraulic operating mechanism of circuit breaker based on alarm information as claimed in claim 1, wherein the trend of change of the quantity of the related monitoring alarm information includes a sudden increase type, and the sudden increase type is specifically:

and comparing the alarm frequency of the previous time interval with the alarm frequency of the next previous time interval, wherein the increment of the alarm frequency of the previous time interval is not less than X, and X is different according to the model and the manufacturer of the circuit breaker operating mechanism and the control requirement of the early warning precision.

7. The method for early warning of abnormality of hydraulic operating mechanism of circuit breaker based on alarm information as claimed in claim 1, wherein the quantity variation trend of the related monitoring alarm information includes a mean value overrun type, specifically:

D. taking the average value of P groups of alarm times from the first 1 time interval to the first P time intervals as a first average value, wherein the first average value is not less than Y times, and if the alarm times are 0 in the first 1 time interval to the first P time intervals, the time intervals with the alarm times of 0 are not included in the calculation of the first average value, wherein Y is different according to the model of a circuit breaker operating mechanism, different manufacturers and different control requirements of early warning precision, and P is mainly determined according to early warning timeliness and judgment precision;

E. taking the average value of P groups of alarm times from the first 1 time interval to the first P time intervals as a first average value, if the alarm times are 0 in the first 1 time interval to the first P time intervals, not taking the time interval with the alarm times being 0 into the calculation of the first average value, taking the average value of the P groups of alarm times from the first (P + 1) time intervals to the first 2*P time intervals as a second average value, if the alarm times are 0 in the first (P + 1) time intervals to the first 2*P time intervals, not taking the time interval with the alarm times being 0 into the calculation of the second average value, wherein the first average value is larger than the second average value by c% or more, c is a positive number, c is different according to the model of a breaker operating mechanism, the manufacturer and the control requirement of early warning precision, and P is mainly determined according to early warning timeliness and judgment precision;

and if D or E is met, early warning is carried out.

8. The method for early warning of the abnormality of the hydraulic operating mechanism of the circuit breaker according to claim 1, wherein the trend of the quantity of the related monitoring warning information includes a short-time frequent type, and the short-time frequent type specifically includes:

calculating the time difference between every two adjacent alarms in a time interval, namely the time interval between the (Q-1) th alarm reset and the Q-th alarm start, wherein Q is a positive integer larger than 2, the time interval is too short when the time interval is smaller than R hours, and the early warning is given when the time interval of Z times or more is too short continuously appears in a time interval, wherein R and Z are different according to the model, the manufacturer, the early warning precision and the timeliness requirements of the circuit breaker operating mechanism.

9. The utility model provides a circuit breaker hydraulic pressure operating mechanism unusual early warning system based on alarm information which characterized in that includes:

an acquisition module: the method comprises the steps of obtaining various initial monitoring alarm information of the substation equipment;

a cleaning module: the system comprises a data processing module, a data processing module and a data processing module, wherein the data processing module is used for processing initial monitoring alarm information;

a screening module: the monitoring alarm information processing device is used for extracting relevant monitoring alarm information related to a keyword from the first monitoring alarm information based on the keyword related to the hydraulic operating mechanism of the circuit breaker;

a judging module: and the monitoring and warning device is used for analyzing the quantity change trend of a plurality of relevant monitoring and warning information within a certain time range, judging whether the hydraulic operating mechanism of the circuit breaker has defects or not, and if so, carrying out early warning.

10. The circuit breaker hydraulic operating mechanism abnormity early warning system for monitoring alarm information according to claim 8, wherein the judgment module comprises a continuous increase judgment submodule, a sudden increase judgment submodule, a mean value overrun judgment submodule and a short-time frequent judgment submodule, wherein the continuous increase judgment submodule is used for judging whether the alarm times corresponding to the first M time intervals to the first 1 time intervals meet continuous increase, that is, the alarm times corresponding to the first M time intervals to the first 1 time intervals are respectively N _M 、N _M-1 …N ₂ 、N ₁ Judgment of N _M …N ₂ 、N ₁ Whether or not the size of (1) satisfies a continuous increase, i.e. N _M ＜N _M-1 ＜…＜N ₂ ＜N ₁ Whether the positive integer is satisfied or not, wherein M is a positive integer not less than 5; or N _M To N ₁ Whether there are no more than (M-1)/4 falling or constant re-rising processes, and the falling or constant re-rising processes do not involve N _M And N _M-1 The descending or constant ascending process means that the descending amplitude does not exceed 50 percent and the ascending occurs after the descending or constant ascending and exceeds the first 2 values, namely whether N is satisfied _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 a is less than or equal to 50 percent, a is a positive integer and belongs to the group of [2,M-2 ]; or N _M To N ₁ Whether there are not more than (M-1)/4 falling or constant re-rising processes which involve N _M Or N _M-1 The descending or invariable ascending process means that the descending amplitude does not exceed 50% and the ascending occurs after the descending or invariable and exceeds the first 2 values, namely whether the following two conditions are met or not is judged: 1) N is a radical of _M ≥N _M-1 ，N _M-1 ＜N _M-2 And N is _M-2 ＞N _M And (N) _M-1 -N _M )/N _M Absolute value of less than or equal to 50%, 2) N _M-1 ≥N _M-2 ，N _M-2 ＜N _M-3 And N is _M-3 ＞N _M-1 And (N) _M-2 -N _M-1 )/N _M-1 The absolute value of the ratio is less than or equal to 50 percent;

the sudden increase judging submodule is used for comparing the alarm frequency of the previous time interval with the alarm frequency of the next previous time interval and judging whether the increase of the alarm frequency of the previous time interval is not less than X times or not;

the mean value overrun judging submodule is used for taking the mean value of the P groups of alarm times from the first 1 time interval to the first P time intervals as a first mean value, if the alarm times from the first 1 time interval to the first P time intervals are time intervals with 0 alarm times, the time intervals with 0 alarm times are not included in the calculation of the first mean value, and judging whether the first mean value is not smaller than Y times or whether the mean value of the P groups of alarm times from the first 1 time interval to the first P time intervals is a first mean value, if the time intervals with 0 alarm times from the first 1 time interval to the first P time intervals are, the time intervals with 0 alarm times are not included in the calculation of the first mean value, if the mean value of the P groups of alarm times from the first (P + 1) time intervals to the first 2*P time intervals is a second mean value, if the time intervals from the first (P + 1) time intervals to the first 2*P have alarm times as a second mean value, the mean value of the P groups of the alarm times is not included in 8978 zxft Is larger than the first mean value, and judging whether the first mean value is larger than c;

the short-time frequent judgment sub-module is used for calculating the time difference between every two adjacent alarms in a time interval, namely the time interval between the (Q-1) th alarm resetting and the Q-th alarm starting, Q is a positive integer greater than 2, the time interval is too short when the time interval is less than R hours, and judging whether the Z times or more than Z times of time intervals are too short continuously in the time interval.

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