CN113611514A - Dry-type transformer monitoring and protecting system - Google Patents

Dry-type transformer monitoring and protecting system Download PDF

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CN113611514A
CN113611514A CN202110972701.1A CN202110972701A CN113611514A CN 113611514 A CN113611514 A CN 113611514A CN 202110972701 A CN202110972701 A CN 202110972701A CN 113611514 A CN113611514 A CN 113611514A
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data
internal
external
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dry
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不公告发明人
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Taishun Yongqing Power Technology Co ltd
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Taishun Yongqing Power Technology Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Artificial Intelligence (AREA)
  • Evolutionary Computation (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

The invention discloses a monitoring and protecting system of a dry-type transformer, which utilizes an internal acquisition module to acquire internal information of the operation of the dry-type transformer and utilizes an external acquisition module to acquire external information of the operation of the dry-type transformer; receiving the internal information by using a data module and carrying out processing operation to obtain internal processing information; the data module receives external information and carries out processing operation to obtain external processing information, and the internal processing information and the external processing information are sent to the analysis module; calculating and analyzing the received internal processing information and external processing information by using an analysis module to obtain an analysis set; early warning and regulation and control are carried out on the operation of the dry-type transformer by utilizing an early warning regulation and control module according to the analysis set; the defect that the protection effect of the temperature control system is poor due to the fact that comprehensive monitoring analysis cannot be carried out according to different types, different winding materials and temperatures of the inside and the outside in the existing scheme is overcome.

Description

Dry-type transformer monitoring and protecting system
Technical Field
The invention relates to the technical field of transformers, in particular to a monitoring and protecting system for a dry-type transformer.
Background
The dry type transformer is a transformer in which an iron core and a winding are not immersed in insulating oil; the dry-type transformer has the advantages of strong short-circuit resistance, small maintenance workload, high operation efficiency, small volume, low noise and the like, and is commonly used in places with high performance requirements on fire prevention, explosion prevention and the like.
However, the existing dry-type transformer has the following defects in use: the conventional temperature control system can only monitor local temperature and control the operation of the dry-type transformer, and cannot comprehensively monitor and analyze the temperature of different types, different winding materials, the temperature of the inside and the temperature of the outside of the dry-type transformer, so that the protection effect of the temperature control system is poor.
Disclosure of Invention
The invention aims to provide a monitoring and protecting system of a dry-type transformer, which mainly aims to acquire an analysis set by acquiring internal information and external information during the operation of the dry-type transformer and analyzing and calculating the internal information and the external information, and monitor, regulate and control the operation of the dry-type transformer according to the analysis set so as to achieve the purposes of dynamic matching and protection.
The purpose of the invention can be realized by the following technical method: a dry-type transformer monitoring and protecting system comprises an internal acquisition module, an external acquisition module, a processing module, an analysis module and an early warning regulation and control module;
the internal acquisition module acquires internal information of the operation of the dry-type transformer, the internal information comprises type data, winding data, internal temperature data, voltage data and time data, and the internal information is sent to the processing module; the external acquisition module acquires external information of the operation of the dry-type transformer, the external information comprises external temperature data, humidity data and air data, and the external information is sent to the processing module;
the data module receives the internal information and carries out processing operation to obtain internal processing information; the data module receives external information and carries out processing operation to obtain external processing information, and the internal processing information and the external processing information are sent to the analysis module;
the analysis module performs calculation analysis on the received internal processing information and external processing information to obtain an analysis set, the analysis set comprises analysis data, first selected data and second selected data, and the analysis set is sent to the early warning regulation and control module;
and the early warning regulation and control module performs early warning and regulation and control on the operation of the dry-type transformer according to the analysis set.
Further, the data module receives the internal information and performs processing operation, and the specific step of obtaining the internal processing information includes:
s21: receiving internal information, and acquiring type data, winding data, internal temperature data, voltage data and time data in the internal information;
s22: marking a type in the type data as LSi, i ═ 1,2.. n; setting different types of the dry-type transformer to correspond to different equipment preset values, matching the types in the type data with all the types to obtain corresponding equipment preset values, and marking the equipment preset values as SYZi, wherein i is 1,2.. n; combining the marked type with a preset value of equipment to obtain type processing data;
s23: obtaining winding material in the winding data and marking the winding material as RCi, i is 1,2.. n; setting different winding materials to correspond to one winding preset value, matching the winding materials in the winding data with all the winding materials to obtain the corresponding winding preset values, and marking as RYYi, i is 1,2.. n; combining the marked winding material with a winding preset value to obtain winding processing data;
s24: acquiring real-time internal temperature in the internal temperature data, setting the real-time internal temperature as a first temperature value, and marking the first temperature value as SNwi, wherein i is 1,2.. n; carrying out normalization processing on the marked first temperature value and carrying out value combination to obtain internal temperature processing data; acquiring real-time voltage in the voltage data and marking the real-time voltage as SDYi, i-1, 2.. n; carrying out normalization processing on the marked real-time voltage and carrying out value combination to obtain voltage processing data;
s25: acquiring the running time length in the time data and marking the running time length as YSi, wherein i is 1,2.. n; acquiring the total running time length in the time data and marking the total running time length as YSZi, i-1, 2.. n; carrying out normalization processing on the marked running time length and the marked total running time length and combining the normalized running time length and the marked total running time length to obtain time processing data;
s26: and classifying and combining the type processing data, the winding processing data, the internal temperature processing data, the voltage processing data and the time processing data to obtain internal processing information.
Further, the data module receives external information and performs processing operation, and the specific step of obtaining the external processing information includes:
s31: receiving external information, and acquiring external temperature data, humidity data and air data in the external information;
s32: acquiring the position of the dry-type transformer and setting the position as an origin, establishing a monitoring area according to a preset distance, acquiring an external temperature value in external temperature data in the monitoring area and setting the external temperature value as a second temperature value, and marking the second temperature value as SWwi, wherein i is 1,2.. n; carrying out normalization processing on the marked second temperature value and carrying out value combination to obtain external temperature processing data;
s33: acquiring a humidity value in humidity data in a monitoring area and marking the humidity value as SZi, i-1, 2.. n; carrying out normalization processing on the marked humidity values and carrying out value combination to obtain humidity processing data; acquiring a concentration of a contaminant in the air data and marking as WNi, i-1, 2.. n; carrying out normalization processing on the marked pollutant concentration and carrying out value combination to obtain air processing data;
s34: and classifying and combining the external temperature processing data, the humidity processing data and the air processing data to obtain external processing information.
Further, the analysis module performs calculation analysis on the received internal processing information and external processing information to obtain an analysis set, and the specific steps of the analysis set include:
s41: when the dry-type transformer starts to operate, acquiring a winding preset value RYTi, an equipment preset value SYZi, a first temperature value SNwi, a real-time voltage SDYi, an operation time length YSi and a total operation time length YSZi which are marked in internal processing information;
s42: calculating and obtaining an internal state value of the operation of the dry-type transformer by using a formula, wherein the formula is as follows:
Figure BDA0003226303650000041
wherein Q isntiExpressed as internal state values, a1, a2, a3 are expressed as different scaling factors and are all larger than zero;
s43: setting the maximum internal state value as a selected internal state value, acquiring data corresponding to the selected internal state value and setting the data as first selected data;
s44: acquiring a second temperature value SWwi, a humidity value SZi and a pollutant concentration WNi which are marked in the external processing information;
s45: calculating and acquiring an external state value of the operation of the dry-type transformer by using a formula, wherein the formula is as follows:
Figure BDA0003226303650000042
wherein Q iswtiExpressed as the appearance value, b1, b2, b3 are expressed as different proportionality coefficients and are all larger than zero;
s46: setting the maximum external state value as a selected middle and external state value, acquiring data corresponding to the selected middle and external state value and setting the data as second selected data;
s47: and analyzing and calculating by utilizing the first selected data and the second selected data to obtain analyzed data, and combining the analyzed data, the first selected data and the second selected data to obtain an analysis set.
Further, the specific steps of utilizing the first selected data and the second selected data to perform analysis calculation to obtain the analysis data include:
s51: acquiring a first temperature value, a real-time voltage, an operation time length and a total operation time length in the first selected data, respectively marking as SNwi0, SDYi0, YSi0 and YSZi0, and acquiring a second temperature value, a humidity value and a pollutant concentration in the second selected data, respectively marking as SWwi0, SZi0 and WNi 0;
s52: the preset value of the operation of the dry-type transformer is calculated and obtained by using a formula, wherein the formula is as follows:
Figure BDA0003226303650000043
wherein Q isytiExpressed as preset values, c1, c2, c3, c4 and c5 are expressed as different proportionality coefficients and are all greater than zero, WC0 is expressed as a preset temperature threshold, SZ0 is expressed as a preset humidity threshold, WN0 is expressed as a preset pollutant concentration threshold, and SDY0 is expressed as a preset voltage threshold;
s53: matching the preset value with a preset range, and if the preset value is not greater than the minimum value of the preset range, generating a normal signal; if the preset value is larger than the minimum value of the preset range and smaller than the maximum value of the preset range, generating a first preset signal; if the preset value is not smaller than the maximum value of the preset range, generating a second preset signal;
s54: and combining the normal signal, the first preset signal and the second preset signal to obtain analysis data.
Further, the concrete steps of early warning and regulating the operation of the dry-type transformer by the early warning regulation and control module according to the analysis set comprise:
s61: receiving and analyzing the analysis set, and if the analysis set contains a first preset signal, generating a first early warning instruction for early warning;
s62: and if the analysis set contains the first pre-regulation signal, generating a second pre-warning instruction for pre-warning and regulating and controlling the operation of the dry-type transformer.
The invention has the beneficial effects that:
according to the various aspects disclosed by the invention, through the matched use of the internal acquisition module, the external acquisition module, the processing module, the analysis module and the early warning regulation and control module, the comprehensive monitoring and analysis can be carried out according to different types and different winding materials of the dry-type transformer and the internal and external temperatures during operation, and the defect of poor protection effect of the conventional temperature control system is overcome;
the method comprises the steps that internal information of the operation of the dry-type transformer is collected through an internal collection module, wherein the internal information comprises type data, winding data, internal temperature data, voltage data and time data; the external acquisition module acquires external information of the operation of the dry-type transformer, wherein the external information comprises external temperature data, humidity data and air data; by collecting internal and external information during operation of the dry-type transformer and comprehensively considering the type and material of the equipment and the internal temperature and external temperature during operation, effective data support can be provided for temperature early warning and regulation and control, and the defects of poor protection effect and regulation and control accuracy caused by monitoring and adjusting only through single temperature in the existing scheme are overcome;
receiving the internal information through a data module and carrying out processing operation to obtain internal processing information; the data module receives external information and carries out processing operation to obtain external processing information; by processing the acquired information, the information can be standardized and is convenient for calculation, and the purpose of improving the efficiency and accuracy of calculation is achieved;
the analysis module performs calculation analysis on the received internal processing information and external processing information to obtain an analysis set, the analysis set comprises analysis data, first selected data and second selected data, and the analysis set is sent to the early warning regulation and control module; calculating and analyzing the processed information to establish a relation calculation among all data in the information to obtain an internal state value and an external state value, analyzing the internal state value and the external state value, and generating corresponding early warning and regulating signals in different states;
the early warning regulation and control module performs early warning and regulation and control on the operation of the dry-type transformer according to the analysis set; the purposes of dynamically monitoring and timely adjusting the operation of the dry-type transformer and improving the operation safety of the dry-type transformer can be achieved.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic block diagram of a monitoring and protecting system for a dry-type transformer according to the present invention.
Detailed Description
The technical method in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present invention is a monitoring and protecting system for a dry-type transformer, which includes an internal acquisition module, an external acquisition module, a processing module, an analysis module, and an early warning regulation module;
the internal acquisition module acquires internal information of the operation of the dry-type transformer, the internal information comprises type data, winding data, internal temperature data, voltage data and time data, and the internal information is sent to the processing module; the external acquisition module acquires external information of the operation of the dry-type transformer, the external information comprises external temperature data, humidity data and air data, and the external information is sent to the processing module; the type data is the type of the dry-type transformer;
the data module receives the internal information and carries out processing operation to obtain the internal processing information, and the specific steps comprise:
receiving internal information, and acquiring type data, winding data, internal temperature data, voltage data and time data in the internal information;
marking a type in the type data as LSi, i ═ 1,2.. n; setting different types of the dry-type transformer to correspond to different equipment preset values, matching the types in the type data with all the types to obtain corresponding equipment preset values, and marking the equipment preset values as SYZi, wherein i is 1,2.. n; combining the marked type with a preset value of equipment to obtain type processing data; wherein i represents the number;
obtaining winding material in the winding data and marking the winding material as RCi, i is 1,2.. n; setting different winding materials to correspond to one winding preset value, matching the winding materials in the winding data with all the winding materials to obtain the corresponding winding preset values, and marking as RYYi, i is 1,2.. n; combining the marked winding material with a winding preset value to obtain winding processing data;
acquiring real-time internal temperature in the internal temperature data, setting the real-time internal temperature as a first temperature value, and marking the first temperature value as SNwi, wherein i is 1,2.. n; carrying out normalization processing on the marked first temperature value and carrying out value combination to obtain internal temperature processing data; acquiring real-time voltage in the voltage data and marking the real-time voltage as SDYi, i-1, 2.. n; carrying out normalization processing on the marked real-time voltage and carrying out value combination to obtain voltage processing data;
acquiring the running time length in the time data and marking the running time length as YSi, wherein i is 1,2.. n; acquiring the total running time length in the time data and marking the total running time length as YSZi, i-1, 2.. n; carrying out normalization processing on the marked running time length and the marked total running time length and combining the normalized running time length and the marked total running time length to obtain time processing data;
classifying and combining type processing data, winding processing data, internal temperature processing data, voltage processing data and time processing data to obtain internal processing information;
the data module receives external information and carries out processing operation to obtain the external processing information, and the specific steps comprise:
receiving external information, and acquiring external temperature data, humidity data and air data in the external information;
acquiring the position of the dry-type transformer and setting the position as an origin, establishing a monitoring area according to a preset distance, acquiring an external temperature value in external temperature data in the monitoring area and setting the external temperature value as a second temperature value, and marking the second temperature value as SWwi, wherein i is 1,2.. n; carrying out normalization processing on the marked second temperature value and carrying out value combination to obtain external temperature processing data; for example, the preset distance may be 0.5m, and a circular area formed by taking the dry-type transformer as an origin is a monitoring area;
acquiring a humidity value in humidity data in a monitoring area and marking the humidity value as SZi, i-1, 2.. n; carrying out normalization processing on the marked humidity values and carrying out value combination to obtain humidity processing data; acquiring a concentration of a contaminant in the air data and marking as WNi, i-1, 2.. n; carrying out normalization processing on the marked pollutant concentration and carrying out value combination to obtain air processing data; wherein the concentration of pollutants is the concentration of suspended particles, and the pollutants are collected based on the existing filter membrane sampling and weighing or continuous automatic measurement method;
classifying and combining the external temperature processing data, the humidity processing data and the air processing data to obtain external processing information;
sending the internal processing information and the external processing information to an analysis module;
the analysis module performs calculation analysis on the received internal processing information and external processing information to obtain an analysis set, the analysis set comprises analysis data, first selected data and second selected data, and the analysis set is sent to the early warning regulation and control module; the method comprises the following specific steps:
when the dry-type transformer starts to operate, acquiring a winding preset value RYTi, an equipment preset value SYZi, a first temperature value SNwi, a real-time voltage SDYi, an operation time length YSi and a total operation time length YSZi which are marked in internal processing information;
calculating and obtaining an internal state value of the operation of the dry-type transformer by using a formula, wherein the formula is as follows:
Figure BDA0003226303650000091
wherein Q isntiExpressed as internal state values, a1, a2, a3 are expressed as different scaling factors and are all larger than zero; where e is expressed as the base of a natural logarithmic function, and has a value of about 2.718281828459045;
setting the maximum internal state value as a selected internal state value, acquiring data corresponding to the selected internal state value and setting the data as first selected data;
acquiring a second temperature value SWwi, a humidity value SZi and a pollutant concentration WNi which are marked in the external processing information;
calculating and acquiring an external state value of the operation of the dry-type transformer by using a formula, wherein the formula is as follows:
Figure BDA0003226303650000092
wherein Q iswtiExpressed as the appearance value, b1, b2, b3 are expressed as different proportionality coefficients and are all larger than zero;
setting the maximum external state value as a selected middle and external state value, acquiring data corresponding to the selected middle and external state value and setting the data as second selected data;
analyzing and calculating by utilizing the first selected data and the second selected data to obtain analyzed data, and the specific steps comprise:
acquiring a first temperature value, a real-time voltage, an operation time length and a total operation time length in the first selected data, respectively marking as SNwi0, SDYi0, YSi0 and YSZi0, and acquiring a second temperature value, a humidity value and a pollutant concentration in the second selected data, respectively marking as SWwi0, SZi0 and WNi 0;
the preset value of the operation of the dry-type transformer is calculated and obtained by using a formula, wherein the formula is as follows:
Figure BDA0003226303650000101
wherein Q isytiExpressed as preset values, c1, c2, c3, c4 and c5 are expressed as different proportionality coefficients and are all greater than zero, WC0 is expressed as a preset temperature threshold, SZ0 is expressed as a preset humidity threshold, WN0 is expressed as a preset pollutant concentration threshold, and SDY0 is expressed as a preset voltage threshold; in the embodiment of the invention, the preset temperature threshold, the preset humidity threshold, the preset pollutant concentration threshold and the preset pollutant concentration threshold are set based on dry-type transformers of different models according to actual conditions or are obtained through simulation of a large amount of data;
matching the preset value with a preset range, and if the preset value is not greater than the minimum value of the preset range, generating a normal signal; if the preset value is larger than the minimum value of the preset range and smaller than the maximum value of the preset range, generating a first preset signal; if the preset value is not smaller than the maximum value of the preset range, generating a second preset signal; the preset presetting range is also set based on dry-type transformers of different models according to actual conditions or obtained through simulation of a large amount of data;
combining the normal signal, the first preset signal and the second preset signal to obtain analysis data;
combining the analysis data, the first selected data and the second selected data to obtain an analysis set;
the early warning regulation and control module carries out early warning and regulation and control on the operation of the dry-type transformer according to the analysis set, and the concrete steps comprise:
receiving and analyzing the analysis set, and if the analysis set contains a first preset signal, generating a first early warning instruction for early warning; the first early warning instruction indicates that the internal temperature of the dry-type transformer is abnormal during operation and needs to be checked and repaired;
if the analysis set contains the first preset signal, generating a second early warning instruction for early warning and regulating and controlling the operation of the dry-type transformer; the second early warning instruction indicates that the internal temperature of the dry-type transformer needs to be overhauled when the dry-type transformer operates, the dry-type transformer is controlled to stop operating according to the second early warning instruction, a worker is assigned to overhaul, overhauled parts are obtained, and the overhauling frequency is increased by one;
example two
Acquiring the overhaul times, overhaul components and maintenance time of an overhaul worker, marking the overhaul times as D1, setting different components to correspond to different component type values, matching the types of the overhaul components with the types of all the components to acquire the corresponding component type values, marking the component type values as D2, marking the maintenance time as D3, and utilizing a formula to obtain the maintenance time
Figure BDA0003226303650000111
Calculating and acquiring a check value of the dry-type transformer; wherein d1, d2, and d3 represent different scaling factors and are all greater than zero;
matching the check value with a preset overhaul threshold value, and if the check value is not greater than the overhaul threshold value, judging that the whole running state of the dry-type transformer is normal and does not need to be overhauled and generating a first matching signal; if the check value is larger than the overhaul threshold value, judging that the whole running state of the dry-type transformer is abnormal and needs to be overhauled and generating a second matching signal; and carrying out overall inspection on the dry-type transformer by using the second matching signal.
In the embodiment of the invention, the internal acquisition module is used for acquiring the internal information of the operation of the dry-type transformer and sending the internal information to the processing module; the method comprises the steps that external information of the operation of the dry-type transformer is collected by an external collection module, and the external information is sent to a processing module;
receiving the internal information by using a data module and carrying out processing operation to obtain internal processing information; the data module receives external information and carries out processing operation to obtain external processing information, and the internal processing information and the external processing information are sent to the analysis module;
internal processing of a reception by means of an analysis modulePerforming calculation analysis on the information and the externally processed information by using a formula
Figure BDA0003226303650000112
Calculating to obtain an internal state value of the dry-type transformer, setting the maximum internal state value as a selected internal state value, obtaining data corresponding to the selected internal state value and setting the data as first selected data; using formulas
Figure BDA0003226303650000113
Calculating to obtain an external state value of the dry-type transformer, setting the maximum external state value as a selected middle-external state value, obtaining data corresponding to the selected middle-external state value and setting the data as second selected data, and utilizing a formula
Figure BDA0003226303650000114
Calculating to obtain a preset value of the dry-type transformer in operation, matching the preset value with a preset range to obtain a normal signal, a first preset signal and a second preset signal, and combining the normal signal, the first preset signal and the second preset signal to obtain analysis data; combining the analysis data, the first selected data and the second selected data to obtain an analysis set, and sending the analysis set to an early warning regulation and control module;
early warning and regulation are carried out on the operation of the dry-type transformer by utilizing an early warning regulation and control module according to the analysis set, and a formula is utilized
Figure BDA0003226303650000121
Calculating and acquiring a check value of the dry-type transformer; matching the check value with a preset overhaul threshold value, and if the check value is not greater than the overhaul threshold value, judging that the whole running state of the dry-type transformer is normal and does not need to be overhauled and generating a first matching signal; if the check value is larger than the overhaul threshold value, judging that the whole running state of the dry-type transformer is abnormal and needs to be overhauled and generating a second matching signal; carrying out overall inspection on the dry-type transformer by using the second matching signal; can dynamically monitor and timely adjust the operation of the dry-type transformer, and improveThe dry type transformer has the purpose of operation safety.
The functional modules in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional module.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims (6)

1. A dry-type transformer monitoring and protecting system is characterized by comprising an internal acquisition module, an external acquisition module, a processing module, an analysis module and an early warning regulation and control module;
the internal acquisition module acquires internal information of the operation of the dry-type transformer, the internal information comprises type data, winding data, internal temperature data, voltage data and time data, and the internal information is sent to the processing module; the external acquisition module acquires external information of the operation of the dry-type transformer, the external information comprises external temperature data, humidity data and air data, and the external information is sent to the processing module;
the data module receives the internal information and carries out processing operation to obtain internal processing information; the data module receives external information and carries out processing operation to obtain external processing information, and the internal processing information and the external processing information are sent to the analysis module;
the analysis module performs calculation analysis on the received internal processing information and external processing information to obtain an analysis set, the analysis set comprises analysis data, first selected data and second selected data, and the analysis set is sent to the early warning regulation and control module;
and the early warning regulation and control module performs early warning and regulation and control on the operation of the dry-type transformer according to the analysis set.
2. A dry-type transformer monitoring and protection system as claimed in claim 1, wherein the data module receives the internal information and performs the processing operation, and the specific step of obtaining the internal processing information includes:
s21: receiving internal information, and acquiring type data, winding data, internal temperature data, voltage data and time data in the internal information;
s22: marking a type in the type data as LSi, i ═ 1,2.. n; matching the types in the type data with all types to obtain corresponding equipment preset values, and marking the equipment preset values as SYZi, i is 1,2.. n; obtaining winding material in the winding data and marking the winding material as RCi, i is 1,2.. n; matching winding materials in the winding data with all winding materials to obtain corresponding winding preset values, and marking as RYYi, i is 1,2.. n;
s23: acquiring real-time internal temperature in the internal temperature data and setting the real-time internal temperature as a first temperature value SNwi, wherein i is 1,2.. n; acquiring real-time voltage in the voltage data and marking the real-time voltage as SDYi, i-1, 2.. n; acquiring the running time length in the time data and marking the running time length as YSi, wherein i is 1,2.. n; acquiring the total running time length in the time data and marking the total running time length as YSZi, i-1, 2.. n;
s24: and classifying and combining the marked data to obtain internal processing information.
3. A dry-type transformer monitoring and protection system as claimed in claim 2, wherein the data module receives external information and performs processing operation, and the specific step of obtaining the external processing information includes:
s31: receiving external information, and acquiring external temperature data, humidity data and air data in the external information;
s32: acquiring the position of the dry-type transformer and setting the position as an origin, establishing a monitoring area according to a preset distance, acquiring an external temperature value in external temperature data in the monitoring area and setting the external temperature value as a second temperature value SWwi, wherein i is 1,2.. n; acquiring a humidity value in humidity data in a monitoring area and marking the humidity value as SZi, i-1, 2.. n; acquiring a concentration of a contaminant in the air data and marking as WNi, i-1, 2.. n;
s33: and classifying and combining the marked data to obtain external processing information.
4. A dry-type transformer monitoring and protecting system as claimed in claim 3, wherein the analyzing module performs calculation analysis on the received internal processing information and external processing information, and the specific step of obtaining the analysis set includes:
s41: when the dry-type transformer starts to operate, acquiring a winding preset value RYTi, an equipment preset value SYZi, a first temperature value SNwi, a real-time voltage SDYi, an operation time length YSi and a total operation time length YSZi which are marked in internal processing information;
s42: using formulas
Figure FDA0003226303640000031
Calculating to obtain an internal state value of the operation of the dry-type transformer; wherein Q isntiExpressed as internal state values, a1, a2, a3 are expressed as different scaling factors and are all larger than zero; setting the maximum internal state value as a selected internal state value, acquiring data corresponding to the selected internal state value and setting the data as first selected data;
s43: acquiring a second temperature value SWwi, a humidity value SZi and a pollutant concentration WNi which are marked in the external processing information;
s44: using formulas
Figure FDA0003226303640000032
Calculating to obtain an external state value of the operation of the dry-type transformer; wherein Q iswtiExpressed as the appearance value, b1, b2, b3 are expressed as different proportionality coefficients and are all larger than zero; setting the maximum external state value as a selected middle and external state value, acquiring data corresponding to the selected middle and external state value and setting the data as second selected data;
s45: and analyzing and calculating by utilizing the first selected data and the second selected data to obtain analyzed data, and combining the analyzed data, the first selected data and the second selected data to obtain an analysis set.
5. A dry-type transformer monitoring and protection system as claimed in claim 4, wherein the specific steps of using the first selected data and the second selected data to perform analysis calculation to obtain the analysis data include:
s51: acquiring a first temperature value, a real-time voltage, an operation time length and a total operation time length in the first selected data, respectively marking as SNwi0, SDYi0, YSi0 and YSZi0, and acquiring a second temperature value, a humidity value and a pollutant concentration in the second selected data, respectively marking as SWwi0, SZi0 and WNi 0;
s52: the preset value of the operation of the dry-type transformer is calculated and obtained by using a formula, wherein the formula is as follows:
Figure FDA0003226303640000041
wherein Q isytiExpressed as preset values, c1, c2, c3, c4 and c5 are expressed as different proportionality coefficients and are all greater than zero, WC0 is expressed as a preset temperature threshold, SZ0 is expressed as a preset humidity threshold, WN0 is expressed as a preset pollutant concentration threshold, and SDY0 is expressed as a preset voltage threshold;
s53: matching the preset value with a preset range, and if the preset value is not greater than the minimum value of the preset range, generating a normal signal; if the preset value is larger than the minimum value of the preset range and smaller than the maximum value of the preset range, generating a first preset signal; if the preset value is not smaller than the maximum value of the preset range, generating a second preset signal;
s54: and combining the normal signal, the first preset signal and the second preset signal to obtain analysis data.
6. The dry-type transformer monitoring and protecting system as claimed in claim 5, wherein the specific steps of the early warning and regulation module for early warning and regulating the operation of the dry-type transformer according to the analysis set include:
s61: receiving and analyzing the analysis set, and if the analysis set contains a first preset signal, generating a first early warning instruction for early warning;
s62: and if the analysis set contains the first pre-regulation signal, generating a second pre-warning instruction for pre-warning and regulating and controlling the operation of the dry-type transformer.
CN202110972701.1A 2021-08-24 2021-08-24 Dry-type transformer monitoring and protecting system Withdrawn CN113611514A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116027111A (en) * 2023-03-28 2023-04-28 华北电力大学（保定） Transformer electric variable measuring device and measuring method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116027111A (en) * 2023-03-28 2023-04-28 华北电力大学（保定） Transformer electric variable measuring device and measuring method

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