CN113237506B - Early warning method and system for high-voltage bushing tap device and storage medium - Google Patents
Early warning method and system for high-voltage bushing tap device and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides an early warning method, an early warning system and a storage medium for a high-voltage bushing tap device, and belongs to the technical field of operation and maintenance of GIS equipment. The early warning method comprises the following steps: acquiring the internal temperature, the external temperature, the internal humidity and the external humidity of the high-voltage bushing end screen device at the current moment; calculating an early warning coefficient of the high-voltage bushing end screen device according to a formula (1); and judging the current early warning state of the high-voltage bushing end screen device according to the early warning coefficient. Through the technical scheme, the early warning method, the early warning system and the storage medium for the high-voltage bushing end screen device provided by the invention combine the temperature and humidity parameters and further judge the combined early warning parameters, so that the technical defect that the temperature and the humidity are singly and respectively judged in the prior art so as to start multiple false alarms is overcome, and the monitoring efficiency of the high-voltage bushing end screen device is improved.
Description
Technical Field
The invention relates to the technical field of operation and maintenance of GIS (geographic information System) equipment, in particular to an early warning method, an early warning system and a storage medium for a high-voltage bushing end screen device.
Background
GIS equipment is the most commonly used equipment in the field of high voltage power transmission. In the operation and maintenance of the GIS equipment, the monitoring of the end screen of the high-voltage bushing is an especially important link. The end screen is a key component of the high-voltage bushing, and a metal end screen cover is arranged on the end screen, so that the end screen grounding of the high-voltage bushing is realized through the end screen cover. In most high voltage bushing faults are caused by end screen faults, which include end screen moisture, poor end screen grounding, etc. Monitoring the condition of the end screen is therefore an effective measure to ensure safe operation of the high voltage bushing.
In the prior art, the conventional monitoring of the end screen state mainly comprises the monitoring of temperature and humidity, and the monitoring mode mainly comprises the steps of respectively judging whether the temperature and the humidity are higher than preset threshold values and determining that alarm is needed under the condition that the temperature and the humidity are higher than the threshold values. This approach has two drawbacks: one is that under different temperature or humidity conditions, the threshold of the other is substantially variable, that is, under different temperature conditions, the threshold of the humidity is different, and similarly, under different humidity conditions, the threshold of the temperature is also different; secondly, there is no method for adjusting the temperature and humidity threshold value in a targeted manner, so that the original judgment logic is solidified, and when false alarm occurs for many times, the system cannot be adjusted in time, and the robustness is lacked.
Disclosure of Invention
The embodiment of the invention aims to provide an early warning method, an early warning system and a storage medium for a high-voltage bushing end screen device, wherein the early warning method, the early warning system and the storage medium can accurately monitor the state of the high-voltage bushing end screen device and timely send out early warning.
In order to achieve the above object, an embodiment of the present invention provides a method for early warning a high-voltage bushing tap device, where the method includes:
acquiring the internal temperature, the external temperature, the internal humidity and the external humidity of the high-voltage bushing end screen device at the current moment;
calculating the early warning coefficient of the high-voltage bushing end screen device according to the formula (1),
wherein DT is the early warning coefficient, T 1 Is the internal temperature, T 2 For the external temperature, RH 1 For the internal humidity, RH 2 Is the external humidity, epsilon 1 For a compensation coefficient with respect to temperature, e 2 Is a compensation coefficient with respect to humidity; and
and judging the current early warning state of the high-voltage bushing end screen device according to the early warning coefficient.
Optionally, the determining, according to the warning coefficient, a current warning state of the high-voltage bushing end screen device includes:
judging whether the early warning coefficient is larger than a preset threshold value or not;
and under the condition that the early warning coefficient is judged to be larger than the threshold value, determining that the high-voltage bushing end screen device is in an early warning state.
Optionally, the early warning method includes:
under the condition that the high-voltage bushing end screen device is determined to be in an early warning state, acquiring indication information indicating whether a previous early warning signal is a false warning signal or not;
in the case that the indication information is false alarm, correcting the temperature compensation coefficient and the humidity compensation coefficient according to the formula (2) and the formula (3),
ε 1 ′＝ε 1 -Δt 1 ， (2)
ε 2 ′＝ε 2 -Δt 2 ， (3)
wherein epsilon 1 ' Compensation coefficient for corrected temperature, epsilon 1 For compensation factor of temperature before correction, epsilon 2 ' As a compensation factor for corrected humidity, ε 2 Δ t as compensation coefficient for humidity before correction 1 Value of the gradient of the compensation coefficient, Δ t, for a predetermined temperature 2 The gradient value of the compensation coefficient for the preset humidity.
Optionally, the early warning method includes:
under the condition that the high-voltage bushing end screen device is determined to be in an early warning state, acquiring indication information indicating whether a previous early warning signal is a false warning signal or not;
in the case that the indication information is not false alarm, correcting the temperature compensation coefficient and the humidity compensation coefficient according to the formula (4) and the formula (5),
ε 1 ′＝ε 1 +Δt 1 ， (4)
ε 2 ′＝ε 2 +Δt 2 ， (5)
wherein epsilon 1 ' As a compensation coefficient for the corrected temperature, epsilon 1 For compensation factor of temperature before correction, epsilon 2 ' As a compensation factor for the corrected humidity,. Epsilon 2 Δ t as compensation coefficient for humidity before correction 1 Gradient value of compensation coefficient for preset temperature, delta t 2 A gradient value of a compensation coefficient for a preset humidity.
Optionally, the early warning method includes:
acquiring the internal temperature, the external temperature, the internal humidity and the external humidity of the high-voltage bushing end screen device in a time domain;
calculating the fluctuation interval of the early warning coefficient according to the formula (1);
judging whether the fluctuation interval is within a preset early warning interval or not;
and under the condition that the fluctuation interval is judged to be positioned in the early warning interval, determining that the high-voltage bushing end screen device is in an early warning state.
In another aspect, the present invention further provides an early warning system for a high voltage bushing tap device, where the early warning system includes:
the temperature and humidity sensors are arranged inside and outside the high-voltage bushing end screen device;
an alarm; and
and the controller is connected with the temperature and humidity sensor and the alarm, and is used for executing the early warning method and starting the alarm under the condition that the high-voltage bushing end screen device is determined to be in the early warning state.
In still another aspect, the present invention further provides a storage medium storing instructions for being read by a machine to cause the machine to perform any one of the above-mentioned warning methods.
Through the technical scheme, the early warning method, the early warning system and the storage medium for the high-voltage bushing end screen device provided by the invention combine the temperature and humidity parameters and further judge the combined early warning parameters, so that the technical defect that the temperature and the humidity are singly and respectively judged in the prior art so as to start multiple false alarms is overcome, and the monitoring efficiency of the high-voltage bushing end screen device is improved.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention. In the drawings:
figure 1 is a flow diagram of a method of pre-warning of a high voltage bushing end screen arrangement according to an embodiment of the invention;
figure 2 is a partial flow diagram of a method of pre-warning a high voltage bushing end screen apparatus according to an embodiment of the present invention; and
figure 3 is a flow chart of a method of pre-warning of a high voltage bushing end screen arrangement according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, and bottom" is generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the respective embodiments may be combined with each other, but it is necessary to be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Fig. 1 is a flow chart illustrating a method for providing an early warning of a high voltage bushing end screen apparatus according to an embodiment of the present invention. In fig. 1, the warning method may include:
in step S10, the internal temperature, the external temperature, the internal humidity and the external humidity of the high-voltage bushing end screen device at the present moment are acquired.
In step S11, the early warning coefficient of the high voltage bushing end screen device is calculated according to formula (1),
wherein DT is an early warning coefficient, T 1 Is the internal temperature, T 2 To the external temperature, RH 1 For internal humidity, RH 2 Is the external humidity, ε 1 For a compensation coefficient with respect to temperature, e 2 Is a compensation factor for humidity; wherein epsilon 1 、ε 2 The initial value of (c) may be a plurality of values known to those skilled in the art. In a preferred embodiment of the invention, the epsilon is such that the problem of numerical overflow is taken into account 1 、ε 2 May be 0.05.
In step S12, the current warning state of the high-voltage bushing end screen device is determined according to the warning coefficient. Specifically, in this embodiment, it may be determined whether the early warning coefficient is greater than a preset threshold value; and then determining that the high-voltage bushing end screen device is in an early warning state under the condition that the early warning coefficient is judged to be larger than the threshold value. Otherwise, under the condition that the early warning coefficient is judged to be smaller than the threshold value, the high-voltage bushing end screen device is determined to be in a non-early warning state.
In step S11, when calculating the early warning coefficient, the formula (1) combines the external ambient temperature and the ambient humidity to perform the preliminary calculation processing on the internal temperature and the internal humidity, respectively, and then combines the sum of the two, so as to determine the conditions corresponding to the two factors by using the same threshold, thereby simplifying the algorithm and reducing the probability of the system misinformation.
In the prior art, a fixed threshold is often adopted for conventionally judging whether the system is in an early warning state according to temperature or humidity, and even if the system has been subjected to false alarm for multiple times, the thresholds can still only depend on manual operation, so that the robustness of the system is low, and the operation and maintenance efficiency is difficult to improve. Secondly, the threshold is determined uniformly according to the environmental temperature and the geographic condition, if the threshold is adjusted directly, the initial threshold is easy to lose in the subsequent maintenance process, and at the moment, the setting needs to be verified by manually performing a test again, which leads to the increase of the operation and maintenance cost of the system. Therefore, in an embodiment of the present invention, as shown in fig. 2, the warning method may further include:
in step S20, when it is determined that the high-voltage bushing end screen device is in the early warning state, acquiring indication information indicating whether a previous early warning signal is a false warning;
in step S21, in the case that the indication information is false alarm, the temperature compensation coefficient and the humidity compensation coefficient are corrected according to the formula (2) and the formula (3),
ε 1 ′＝ε 1 -Δt 1 ， (2)
ε 2 ′＝ε 2 -Δt 2 ， (3)
wherein epsilon 1 ' Compensation coefficient for corrected temperature, epsilon 1 For a compensation factor of the temperature before correction, epsilon 2 ' As a compensation factor for the corrected humidity,. Epsilon 2 Δ t as compensation coefficient for humidity before correction 1 Gradient value of compensation coefficient for preset temperature, delta t 2 A gradient value of a compensation coefficient for a preset humidity.
In step S22, when the indication information is not false alarm, the temperature compensation coefficient and the humidity compensation coefficient are corrected according to the formula (4) and the formula (5),
ε 1 ′＝ε 1 +Δt 1 ， (4)
ε 2 ′＝ε 2 +Δt 2 ， (5)
wherein epsilon 1 ' Compensation coefficient for corrected temperature, epsilon 1 For compensation factor of temperature before correction, epsilon 2 ' As a compensation factor for the corrected humidity,. Epsilon 2 Δ t as compensation coefficient for humidity before correction 1 Value of the gradient of the compensation coefficient, Δ t, for a predetermined temperature 2 A gradient value of a compensation coefficient for a preset humidity.
The inventor considers that dynamic adjustment of the threshold value leads to loss of the initial threshold value, so in the embodiment, when calculating the early warning coefficient, the compensation coefficient epsilon is respectively increased for the temperature and the humidity 1 、ε 2 (ii) a And then, in combination with the formulas (3) to (5), the compensation coefficient is adjusted according to the condition of the previous false alarm, so that the dynamic adjustment of the judgment condition of the early warning coefficient is realized under the condition that the initial threshold value is not lost.
On the basis of the above-mentioned warning method, considering that the judgment of only the instantaneous value may have a large probability of false alarm, in this embodiment, the warning method further includes the steps as shown in fig. 3. In fig. 3, the warning method may include:
in step S30, obtaining an internal temperature, an external temperature, an internal humidity and an external humidity of the high-voltage bushing end screen device in a time domain;
in step S31, a fluctuation interval of the warning coefficient is calculated according to formula (1);
in step S32, it is determined whether the fluctuation interval is within a preset early warning interval;
in step S33, in the case that the fluctuation interval is determined to be within the warning interval, it is determined that the high-voltage bushing end screen device is in a warning state.
In step S34, in a case that it is determined that the fluctuation interval is not within the warning interval, it is determined that the high-voltage bushing end screen device is in a non-warning state.
Through the judgment of the steps S30 to S32, the judgment of the interval is further increased while the combination of the temperature and the humidity is considered, and the accuracy of the judgment of the early warning state is further improved. In addition, in the case of the interval determination, the dynamic adjustment process of the compensation coefficient is similar to that described above, and therefore is not described herein again.
On the other hand, the invention also provides an early warning system of the high-voltage bushing tap device, and the early warning system comprises a temperature and humidity sensor, an alarm and a controller. The temperature and humidity sensor can be arranged inside and outside the high-voltage bushing end screen device; the controller may be connected to the temperature and humidity sensor and the alarm, and configured to execute any one of the above-described warning methods, and activate the alarm when it is determined that the high-voltage bushing tap device is in a warning state.
In yet another aspect, the present invention also provides a storage medium storing instructions for being read by a machine to cause the machine to perform any one of the warning methods described above.
Through the technical scheme, the early warning method, the early warning system and the storage medium for the high-voltage bushing end screen device provided by the invention combine the temperature and humidity parameters and further judge the combined early warning parameters, so that the technical defect that the temperature and the humidity are singly and respectively judged in the prior art so as to start multiple false alarms is overcome, and the monitoring efficiency of the high-voltage bushing end screen device is improved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both permanent and non-permanent, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (4)
1. A method of pre-warning a high voltage bushing tap device, the method comprising:
acquiring the internal temperature, the external temperature, the internal humidity and the external humidity of the high-voltage bushing end screen device at the current moment;
calculating the early warning coefficient of the high-voltage bushing end screen device according to the formula (1),
wherein DT is the early warning coefficient, T 1 Is the internal temperature, T 2 To the external temperature, RH 1 For the internal humidity, RH 2 Is the external humidity, epsilon 1 For a compensation factor relating to temperature, e 2 Is a compensation coefficient with respect to humidity; and
judging the current early warning state of the high-voltage bushing end screen device according to the early warning coefficient;
the judging the current early warning state of the high-voltage bushing end screen device according to the early warning coefficient comprises the following steps:
judging whether the early warning coefficient is larger than a preset threshold value or not;
under the condition that the early warning coefficient is judged to be larger than the threshold value, determining that the high-voltage bushing end screen device is in an early warning state;
the early warning method comprises the following steps:
under the condition that the high-voltage bushing end screen device is determined to be in an early warning state, acquiring indication information indicating whether a previous early warning signal is a false warning signal or not;
in the case that the indication information is false alarm, correcting the temperature compensation coefficient and the humidity compensation coefficient according to the formula (2) and the formula (3),
ε 1 ′＝ε 1 -Δt 1 ， (2)
ε 2 ′＝ε 2 -Δt 2 ， (3)
wherein epsilon 1 ' Compensation coefficient for corrected temperature, epsilon 1 For compensation factor of temperature before correction, epsilon 2 ' As a compensation factor for corrected humidity, ε 2 Δ t as compensation coefficient for humidity before correction 1 Value of the gradient of the compensation coefficient, Δ t, for a predetermined temperature 2 A gradient value of a compensation coefficient for a preset humidity;
the early warning method comprises the following steps:
under the condition that the high-voltage bushing end screen device is determined to be in an early warning state, acquiring indication information indicating whether a previous early warning signal is a false warning signal or not;
in the case that the indication information is not false alarm, correcting the temperature compensation coefficient and the humidity compensation coefficient according to the formula (4) and the formula (5),
ε 1 ′＝ε 1 +Δt 1 ， (4)
ε 2 ′＝ε 2 +Δt 2 ， (5)
wherein epsilon 1 ' Compensation coefficient for corrected temperature, epsilon 1 For a compensation factor of the temperature before correction, epsilon 2 ' As a compensation factor for corrected humidity, ε 2 Δ t as compensation coefficient for humidity before correction 1 Gradient value of compensation coefficient for preset temperature, delta t 2 The gradient value of the compensation coefficient for the preset humidity.
2. The warning method according to claim 1, wherein the warning method comprises:
acquiring the internal temperature, the external temperature, the internal humidity and the external humidity of the high-voltage bushing end screen device in a time domain;
calculating the fluctuation interval of the early warning coefficient according to the formula (1);
judging whether the fluctuation interval is within a preset early warning interval or not;
and under the condition that the fluctuation interval is judged to be positioned in the early warning interval, determining that the high-voltage bushing end screen device is in an early warning state.
3. An early warning system for a high voltage bushing tap device, the early warning system comprising:
the temperature and humidity sensors are arranged inside and outside the high-voltage bushing end screen device;
an alarm; and
a controller connected to the temperature and humidity sensor and the alarm, for performing the pre-warning method according to claim 1 or 2, and activating the alarm if it is determined that the high-voltage bushing tap device is in a pre-warning state.
4. A storage medium storing instructions for reading by a machine to cause the machine to perform the warning method of claim 1 or 2.
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