CN117672690B - Self-adaptive power supply transformer - Google Patents
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Abstract
The invention relates to the technical field of transformers, in particular to a self-adaptive power supply transformer, which comprises a semi-closed shell and further comprises: a power transformer body; the detection module comprises a vision sensor and a temperature sensor, wherein the vision sensor is partially arranged above the semi-closed shell and used for detecting the horizontal swing width of an input line of the power transformer, and the temperature sensor is arranged below the vision sensor and used for detecting the ambient temperature between the power transformer body and the semi-closed shell; the height adjusting module is connected with the semi-closed shell and used for adjusting the closed height of the semi-closed shell close to one side of the input line of the power transformer; and the control module is used for determining the contact pressure of the tapping switch according to the variances of the output voltages of the power transformers in a plurality of detection periods. The invention realizes the improvement of the stability and the safety of the operation of the power transformer.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a self-adaptive power supply transformer.
Background
The power transformer is a soft magnetic electromagnetic element and has the functions of power transmission, voltage conversion and insulation isolation, and is widely applied to power technology and power electronic technology, and the existing power transformer cannot predict faults and timely adjust faults under long-term working conditions.
Chinese patent publication No.: CN107103977B discloses a power transformer, comprising a housing; the detection module is arranged in the cavity of the shell, and is provided with a conversion unit capable of automatically identifying input voltage and sending out a voltage conversion instruction, and a judgment alarm unit for judging whether the input voltage is over-voltage or under-voltage to perform high-frequency flicker alarm or low-frequency flicker alarm according to the output voltage; the transformer body is arranged in the cavity of the shell and is electrically or signally connected with the detection module, and is used for executing a conversion instruction sent by the conversion unit to realize voltage conversion, so that the following problems exist in the power transformer: the safety of the power transformer is lowered due to inaccurate determination of unstable connection of the power transformer input line and the power transformer reflected in the horizontal swing width of the power transformer input line.
Disclosure of Invention
Therefore, the invention provides a self-adaptive power transformer, which is used for solving the problem that the safety of the power transformer is reduced due to inaccurate judgment on unstable connection of the power transformer input line and the power transformer, which is reflected by the horizontal swing width of the power transformer input line in the prior art.
To achieve the above object, the present invention provides an adaptive power transformer, including a semi-enclosed housing, further including: the power transformer body is connected with the semi-closed shell and comprises a coil winding and a tapping switch which is connected with the coil winding and used for adjusting the turn-in number of the coil; the detection module is connected with the power transformer body and comprises a visual sensor, a noise tester and a temperature sensor, wherein the visual sensor is arranged above the semi-closed shell and used for detecting the horizontal swing width of an input line of the power transformer, the noise tester is arranged below the visual sensor and used for detecting the operation noise intensity of the power transformer body, and the temperature sensor is arranged below the noise tester and used for detecting the ambient temperature between the power transformer body and the semi-closed shell; the height adjusting module is connected with the semi-closed shell and used for adjusting the closed height of the semi-closed shell close to one side of the input line of the power transformer; the control module is respectively connected with the power transformer body, the detection module and the height adjustment module, and is used for determining the contact pressure of the tapping switch according to the variance of the power transformer output voltage in a plurality of detection periods, or determining the closing height of the semi-closed shell close to one side of the power transformer input line according to the variance of the power transformer output voltage in a plurality of detection periods and the horizontal swing width of the power transformer input line, and redetermining the closing height of the semi-closed shell close to one side of the power transformer input line according to the environmental temperature between the power transformer body and the semi-closed shell, or determining the access turn number of the primary coil winding in the coil winding according to the operation noise intensity of the power transformer body.
Further, the height adjustment module includes:
the movable shell is partially arranged above the semi-closed shell and is used for expanding the closed area of the semi-closed shell;
and the electric telescopic rod is connected with the movable shell and is used for adjusting the closing height of the semi-closed shell by changing the vertical height of the movable shell.
Further, the control module obtains a plurality of output voltage values in a plurality of historical operation periods of the power transformer body, the operation duration from the operation start time of each historical operation period to the obtaining time of the output voltage is the same, the control module judges that the stability of the operation process of the power transformer is lower than the allowable range under the condition of a preset first variance and a preset second variance, wherein,
the control module judges and adjusts the contact pressure of the tapping switch under the condition of the preset first variance;
the control module preliminarily judges that the connection stability of the power transformer input line and the power transformer is lower than an allowable range under the condition of the preset second variance, and secondarily judges the connection stability of the power transformer input line and the power transformer according to the horizontal swing width of the power transformer input line;
the preset first variance condition is that the variance of the output voltage of the power transformer is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the output voltage of the power transformer is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
Further, the contact pressure of the tap changer after adjustment is determined by the difference between the variance of the output voltage of the power transformer and the preset first variance.
Further, the control module obtains the horizontal swing width of the power transformer input line under the condition of the preset second variance, judges that the connection stability of the power transformer input line and the power transformer is lower than the allowable range when the horizontal swing width of the power transformer input line is larger than the preset width, and determines the closed height of the semi-closed shell close to one side of the power transformer input line.
Further, the closing height of the semi-closed shell close to one side of the power transformer input line is determined based on the difference value between the horizontal swing width of the power transformer input line and the preset width.
Further, the control module acquires the ambient temperature between the power transformer body and the semi-closed shell when finishing the primary adjustment of the closed height of the semi-closed shell close to one side of the input line of the power transformer, and judges that the safety of the power transformer is lower than the allowable range under the preset first temperature condition and the preset second temperature condition,
the control module judges that the closing height of the semi-closed shell close to one side of the input line of the power transformer needs to be redetermined under the preset first temperature condition;
the control module preliminarily judges that the load stability of the power transformer is lower than an allowable range under the preset second temperature condition, and secondarily judges the load stability of the power transformer according to the running noise intensity of the power transformer body;
the preset first temperature condition is that the ambient temperature between the power transformer body and the semi-closed shell is greater than the preset first temperature and less than or equal to the preset second temperature; the preset second temperature condition is that the ambient temperature between the power transformer body and the semi-closed shell is greater than the preset second temperature; the preset first temperature is less than the preset second temperature.
Further, the control module redetermines the closing height of the semi-closed shell close to one side of the input line of the power transformer according to the difference value between the ambient temperature between the power transformer body and the semi-closed shell and the preset first temperature.
Further, the control module performs secondary judgment on the load stability of the power transformer according to the operation noise intensity of the power transformer body under the preset second temperature condition, wherein,
the control module secondarily judges that the load stability of the power transformer is lower than an allowable range under the condition of preset noise intensity, and determines the number of turns of the primary coil winding;
the preset noise intensity condition is that the running noise intensity of the power transformer body is larger than the preset noise intensity.
Further, the control module determines the number of turns of the primary coil winding according to the difference between the running noise intensity of the power transformer body and the preset noise intensity under the preset noise intensity condition, wherein the number of turns of the primary coil winding is inversely proportional to the difference between the running noise intensity of the power transformer body and the preset noise intensity.
Compared with the prior art, the invention has the beneficial effects that the power transformer detects and correspondingly adjusts the power transformer in the operation process by arranging the power transformer body, the detection module, the height adjustment module and the control module, when the control module judges that the stability of the power transformer in the operation process is lower than the allowable range, the influence of the loss of the tapping switch on the output voltage is reduced by increasing the contact pressure of the tapping switch, or the closing height of the semi-closed shell at one side of the input line of the power transformer is increased when the connection stability of the input line of the power transformer and the power transformer is lower than the allowable range according to the horizontal swing width of the input line of the power transformer, so that the influence of the ageing of the input line material of the power transformer on the input voltage is reduced, and the closing height of the semi-closed shell at one side of the input line of the power transformer is secondarily adjusted according to the ambient temperature between the power transformer body and the semi-closed shell, and as the air flow rate inside the power transformer is reduced due to the increase of the closing height of the semi-closed shell at one side of the input line of the power transformer, the internal temperature of the semi-closed shell is further increased, the closing height of the semi-closed shell is reduced, so that the internal temperature of the semi-closed shell is within a safe range, or the turn-in number of the primary coil winding is adjusted, the voltage loss is reduced by reducing the turn-in number of the primary coil winding, the operation efficiency of the power transformer is improved, and the stability and the safety of the operation of the power transformer are improved.
Further, the power transformer disclosed by the invention is characterized in that the control module judges the stability of the power transformer in the operation process according to the variances of the power transformer output voltages in a plurality of detection periods by setting the preset first variance and the preset second variance, the operation stability of the power transformer is reduced due to the fact that the environment factors or the materials of the power transformer are lost in the operation process of the power transformer, the output voltage is lower than the load end required voltage so as to further reduce the load operation stability and the service life, and the contact pressure of the tapping switch is increased by setting the preset variance difference value, the preset first pressure regulating coefficient and the preset second pressure regulating coefficient under the preset first variance condition, so that the stability of the output voltage is improved by increasing the contact pressure of the tapping switch, and the operation stability and the safety of the power transformer are further improved.
Furthermore, the control module performs secondary judgment on the connection stability of the power transformer input line and the power transformer according to the horizontal swing width of the power transformer input line under the condition of the preset second variance, the connection stability between the power transformer input line and the power transformer is reduced due to environmental factors, so that the stability of the input voltage is reduced, under the condition of the preset second width, the control module adjusts the closed height of the semi-closed shell close to one side of the power transformer input line by setting a preset width difference value, a preset first height adjustment coefficient and a preset second height adjustment coefficient, and increases the supporting force of the power transformer shell to the power transformer input line by increasing the closed height of the semi-closed shell close to one side of the power transformer input line, so that the influence of gravity on the power transformer input line is reduced, the connection stability between the power transformer input line and the power transformer is increased, and the running stability and safety of the power transformer are further improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an adaptive power transformer according to an embodiment of the present invention;
FIG. 2 is a block diagram of the overall structure of an adaptive power transformer according to an embodiment of the present invention;
FIG. 3 is a block diagram of a detection module of an adaptive power transformer according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another angle structure of the adaptive power transformer according to the embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
Fig. 1, fig. 2, fig. 3, and fig. 4 show an overall structure diagram, an overall structure block diagram, a specific structure block diagram of a detection module, and another angular structure diagram of an adaptive power transformer according to an embodiment of the invention. The invention relates to a self-adaptive power transformer, which comprises a semi-closed shell 1 and further comprises:
a power transformer body 2 connected to the semi-closed casing 1 and including a coil winding (not shown) and a tap switch 8 connected to the coil winding for adjusting the number of turns of the coil;
the detection module is connected with the power transformer body 2 and comprises a vision sensor 3, a noise tester 5 and a temperature sensor 6, wherein the vision sensor 3 is arranged above the semi-closed shell 1 and used for detecting the horizontal swing width of an input line (not shown in the figure) of the power transformer, the noise tester 5 is arranged below the vision sensor and used for detecting the operation noise intensity of the power transformer body 2, and the temperature sensor 6 is arranged below the noise tester 5 and used for detecting the environment temperature between the power transformer body 2 and the semi-closed shell 1;
the height adjusting module is connected with the semi-closed shell 1 and is used for adjusting the closed height of the semi-closed shell 1 close to one side of an input line of the power transformer;
the control module is respectively connected with the power transformer body, the detection module and the height adjustment module and is used for determining the contact pressure of the tapping switch according to the variance of the output voltage of the power transformer in a plurality of detection periods or determining the closing height of the semi-closed shell close to one side of the input line of the power transformer according to the variance of the output voltage of the power transformer in a plurality of detection periods and the horizontal swing width of the input line of the power transformer,
and re-determining the closing height of the semi-closed shell close to one side of the input line of the power transformer according to the ambient temperature between the power transformer body and the semi-closed shell, or determining the turn-in number of the primary coil winding in the coil winding according to the operation noise intensity of the power transformer body.
Specifically, the power transformer body further comprises a transformer connecting plate 7 arranged above the tapping switch and used for connecting the input line of the power transformer.
Specifically, when the power transformer of the present invention is operated, the input line of the power transformer is connected to the transformer connection board 7, and the tap switch 8 adjusts the output voltage of the power transformer by changing the number of turns of the primary winding.
Specifically, the horizontal swing width of the power transformer input line is collected by the vision sensor.
Specifically, the variance of the output voltage of the power transformer in the plurality of detection periods is the variance of the output voltage of the power transformer in the plurality of detection periods, and the method for calculating the variance of the output voltage of the power transformer in the plurality of detection periods is a conventional technical means well known to those skilled in the art, so the process for calculating the variance of the output voltage of the power transformer in the plurality of detection periods is not described herein.
According to the power transformer, the power transformer body 2, the detection module, the height adjustment module and the control module are arranged, the power transformer is detected and correspondingly adjusted in the operation process, when the control module judges that the stability of the power transformer in the operation process is lower than an allowable range, the influence of loss of the tap switch 8 on output voltage is reduced by increasing the contact pressure of the tap switch, or the closing height of the semi-closed shell 1 at one side of the input line of the power transformer is increased when the connection stability of the input line of the power transformer and the power transformer is secondarily judged to be lower than the allowable range according to the horizontal swing width of the input line of the power transformer, so that the influence of material ageing of the input line of the power transformer on input voltage is reduced, and the closing height of the semi-closed shell 1 at one side of the power transformer is secondarily adjusted according to the environmental temperature between the power transformer body 2 and the semi-closed shell 1.
With continued reference to fig. 1, the height adjustment module includes:
a movable housing 4, a part of which is arranged above the semi-closed housing 1, for expanding the closed area of the semi-closed housing 1;
an electric telescopic rod 9 connected to the movable housing 4, which adjusts the closing height of the semi-closed housing 1 by changing the vertical height of the movable housing 4.
With continued reference to fig. 1, the control module obtains a plurality of output voltage values in a plurality of historical operation periods of the power transformer body, and the operation duration from the operation start time of each historical operation period to the obtaining time of the output voltage is the same, and determines that the stability of the operation process of the power transformer is lower than the allowable range under the preset first variance condition and the preset second variance condition,
the control module judges and adjusts the contact pressure of the tapping switch under the condition of the preset first variance;
the control module preliminarily judges that the connection stability of the power transformer input line and the power transformer is lower than an allowable range under the condition of the preset second variance, and secondarily judges the connection stability of the power transformer input line and the power transformer according to the horizontal swing width of the power transformer input line;
the preset first variance condition is that the variance of the output voltage of the power transformer is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the output voltage of the power transformer is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
With continued reference to fig. 1, the contact pressure of the tap changer after adjustment is determined by a difference between the variance of the output voltage of the power transformer and a preset first variance.
Specifically, the process of determining the contact pressure of the tap changer includes:
the control module adjusts the contact pressure of the tapping switch to a first pressure by using a preset first pressure adjusting coefficient under the condition of a preset first differential value;
the control module adjusts the contact pressure of the tapping switch to a second pressure by using a preset second pressure adjustment coefficient under the condition of a preset second variance difference value;
the preset first variance difference condition is that the difference value between the variance of the output voltage of the power transformer and the preset first variance is smaller than or equal to the preset variance difference value; the preset two-variance difference condition is that the difference between the variance of the output voltage of the power transformer and the preset first variance is larger than the preset variance difference; the preset first pressure adjustment coefficient is smaller than the preset second pressure adjustment coefficient.
Specifically, the variance of the output voltage of the power transformer is denoted as X, the preset first variance is denoted as X1, the preset second variance is denoted as X2, the difference between the variance of the output voltage of the power transformer and the preset first variance is denoted as Δx, Δx=x-X1 is set, the preset variance difference is denoted as Δx0, the preset first pressure adjustment coefficient is denoted as α1, the preset second pressure adjustment coefficient is denoted as α2, wherein 1 < α1 < α2, the contact pressure of the tap changer is denoted as P, the contact pressure of the tap changer after adjustment is denoted as P ', P' =p×αi is set, wherein αi is the preset i-th pressure adjustment coefficient, and i=1, 2 is set.
According to the power transformer, the control module judges the stability of the power transformer in the operation process according to the preset first variance and the preset second variance of the power transformer output voltage in a plurality of detection periods, the stability of the power transformer is reduced due to the fact that the environment factors or the materials of the power transformer are lost in the operation process of the power transformer, the output voltage is lower than the load end demand voltage, the load operation stability is reduced, the service life is shortened, the preset variance difference value, the preset first pressure regulating coefficient and the preset second pressure regulating coefficient are set under the preset first variance condition, the contact pressure of the tap switch is increased by the control module, the stability of the output voltage is improved by increasing the contact pressure of the tap switch, and the operation stability and the safety of the power transformer are further improved.
With continued reference to fig. 1, the control module obtains a horizontal swing width of the input line of the power transformer under the condition of the preset second variance, determines that the connection stability of the input line of the power transformer and the power transformer is lower than the allowable range when the horizontal swing width of the input line of the power transformer is greater than the preset width, and determines the closed height of the semi-closed shell close to one side of the input line of the power transformer.
With continued reference to fig. 1, the closing height of the semi-closed shell on the side close to the input line of the power transformer is determined based on the difference between the horizontal swing width of the input line of the power transformer and the preset width.
Specifically, the specific process of determining the closing height of the semi-closed shell close to one side of the input line of the power transformer is as follows:
the control module uses a preset first height adjustment coefficient to adjust the closing height of the semi-closed shell 1 close to one side of the input line of the power transformer under the condition of a preset first width difference value;
the control module uses a preset second height adjustment coefficient to adjust the closing height of the semi-closed shell 1 close to one side of the input line of the power transformer under the condition of a preset second width difference value;
the preset first width difference condition is that the difference value between the horizontal swing width of the input line of the power transformer and the preset width is smaller than or equal to the preset width difference value; the preset second width difference condition is that the difference between the horizontal swing width of the input line of the power transformer and the preset width is larger than the preset width difference; the preset first height adjustment coefficient is smaller than the preset second height adjustment coefficient.
Specifically, the horizontal swing width of the power transformer input line is denoted as W, the preset width is denoted as W0, the difference between the horizontal swing width of the power transformer input line and the preset width is denoted as Δw, Δw=w-W0 is set, the preset width difference is denoted as Δw0, the preset first height adjustment coefficient is denoted as β1, the preset second height adjustment coefficient is denoted as β2,1 < β1 < β2, the closing height of the semi-closed shell 1 on the side close to the power transformer input line is denoted as H, the closing height of the semi-closed shell on the side close to the power transformer input line after adjustment is denoted as H ', H' =hxβj is set, wherein βj is the preset j height adjustment coefficient, and j=1, 2 is set.
According to the power transformer disclosed by the invention, the control module is used for carrying out secondary judgment on the connection stability of the power transformer input line and the power transformer according to the horizontal swing width of the power transformer input line under the condition of the preset second variance, the connection stability between the power transformer input line and the power transformer is reduced due to environmental factors, so that the stability of input voltage is reduced, and the control module is used for adjusting the closed height of the semi-closed shell 1 close to one side of the power transformer input line by setting a preset width difference value, a preset first height adjustment coefficient and a preset second height adjustment coefficient under the condition of the preset second width, and further reducing the influence of gravity on the power transformer input line, increasing the connection stability between the power transformer input line and the power transformer and further improving the running stability and safety of the power transformer by increasing the closed height of the semi-closed shell 1 close to one side of the power transformer input line.
With continued reference to fig. 1, the control module acquires an ambient temperature between the power transformer body and the semi-enclosed housing when completing initial adjustment of the enclosed height of the semi-enclosed housing near one side of the input line of the power transformer, and determines that the safety of the power transformer is lower than the allowable range under a preset first temperature condition and a preset second temperature condition,
the control module judges that the closing height of the semi-closed shell close to one side of the input line of the power transformer needs to be redetermined under the preset first temperature condition;
the control module preliminarily judges that the load stability of the power transformer is lower than an allowable range under the preset second temperature condition, and secondarily judges the load stability of the power transformer according to the running noise intensity of the power transformer body;
the preset first temperature condition is that the ambient temperature between the power transformer body and the semi-closed shell is greater than the preset first temperature and less than or equal to the preset second temperature; the preset second temperature condition is that the ambient temperature between the power transformer body and the semi-closed shell is greater than the preset second temperature; the preset first temperature is less than the preset second temperature.
With continued reference to fig. 1, the control module redetermines the closing height of the semi-closed shell near the input line of the power transformer according to the difference between the ambient temperature between the power transformer body and the semi-closed shell and the preset first temperature.
Specifically, the specific process of redefining the closing height of the semi-closed shell close to the input line side of the power transformer is as follows:
the control module continuously adjusts the closed height of the adjusted semi-closed shell at one side close to the input line of the power transformer by using a preset fourth height adjusting coefficient under the condition of presetting a first temperature difference value;
the control module continuously adjusts the closed height of the adjusted semi-closed shell at one side close to the input line of the power transformer by using a preset third height adjusting coefficient under the condition of presetting a second temperature difference value;
the preset first temperature difference condition is that a difference between the ambient temperature of the power transformer body 2 and the semi-closed shell 1 and the preset first temperature is less than or equal to a preset temperature difference; the condition of the preset second temperature difference is that the difference between the ambient temperature between the power transformer body 2 and the semi-closed shell 1 and the preset first temperature is larger than the preset temperature difference; the preset third height adjustment coefficient is smaller than the preset fourth height adjustment coefficient.
Specifically, the ambient temperature between the power transformer body 2 and the semi-closed casing 1 is denoted as T, the preset first temperature is denoted as T1, the preset second temperature is denoted as T2, the difference between the ambient temperature between the power transformer body 2 and the semi-closed casing 1 and the preset first temperature is denoted as Δt, the preset temperature difference is denoted as Δt=t-T1, the preset third height adjustment coefficient is denoted as β3, the preset fourth height adjustment coefficient is denoted as β4,0 < β3 < β4 < 1, the redetermined closed height of the semi-closed casing on the side close to the input line of the power transformer is denoted as H ", H" =h' ×βg is set, wherein βg is the preset g height adjustment coefficient, and g=3, 4 is set.
With continued reference to fig. 1, the control module performs a secondary determination on the load stability of the power transformer according to the operation noise intensity of the power transformer body under the preset second temperature condition, where,
the control module secondarily judges that the load stability of the power transformer is lower than an allowable range under the condition of preset noise intensity, and determines the number of turns of the primary coil winding;
the preset noise intensity condition is that the running noise intensity of the power transformer body is larger than the preset noise intensity.
With continued reference to fig. 1, the control module determines the number of turns of the primary winding according to the difference between the operating noise intensity of the power transformer body and the preset noise intensity under the preset noise intensity condition, where the number of turns of the primary winding is inversely proportional to the difference between the operating noise intensity of the power transformer body and the preset noise intensity.
Specifically, the control module adjusts the number of turns of the primary coil winding to a first number using a preset first turn adjustment factor under a preset first noise intensity difference condition;
the control module adjusts the number of turns of the primary coil winding to a second number by using a preset second turn adjustment coefficient under the condition of a preset second noise intensity difference value;
the preset first noise intensity difference condition is that the difference value between the noise intensity and the preset noise intensity is smaller than or equal to the preset noise intensity difference value; the preset second noise intensity difference condition is that the difference between the noise intensity and the preset noise intensity is larger than the preset noise intensity difference; the preset first turn number adjustment coefficient is smaller than the preset second turn number adjustment coefficient.
Specifically, the operation noise intensity of the power transformer body 2 is denoted as Z, the preset noise intensity is denoted as Z0, the difference between the operation noise intensity of the power transformer body 2 and the preset noise intensity is denoted as Δz, Δz=z-Z0 is set, the preset noise intensity difference is denoted as Δz0, the preset first turns adjustment coefficient is denoted as δ1, the preset second turns adjustment coefficient is denoted as δ2, wherein 0 < δ1 < δ2 < 1, the number of turns of the primary coil winding is denoted as N, the number of turns of the primary coil winding after adjustment is denoted as N ', N' =n× (1- δk) is set, wherein δk is a preset kth turns adjustment coefficient, and k=1, 2 is set.
Example 1
The preset variance difference Δx0=1.5v of this embodiment 1 2 Presetting a first pressure regulating coefficient alpha 1=1.2, presetting a second pressure regulating coefficient alpha 2=1.3, recording the contact pressure of the tapping switch as P=315 MPa,
the present example obtains Δx=1.34V 2 The control module judges that DeltaX is less than or equal to DeltaX 0, and uses alpha 1 to adjust the contact pressure of the tapping switch, wherein the contact pressure P' =315 MPa multiplied by 1.2=378 MPa of the tapping switch after adjustment.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (5)
1. An adaptive power transformer comprising a semi-enclosed housing, further comprising:
the power transformer body is connected with the semi-closed shell and comprises a coil winding and a tapping switch which is connected with the coil winding and used for adjusting the turn-in number of the coil;
the detection module is connected with the power transformer body and comprises a visual sensor, a noise tester and a temperature sensor, wherein the visual sensor is arranged above the semi-closed shell and used for detecting the horizontal swing width of an input line of the power transformer, the noise tester is arranged below the visual sensor and used for detecting the operation noise intensity of the power transformer body, and the temperature sensor is arranged below the noise tester and used for detecting the ambient temperature between the power transformer body and the semi-closed shell;
the height adjusting module is connected with the semi-closed shell and used for adjusting the closed height of the semi-closed shell close to one side of the input line of the power transformer;
the control module is respectively connected with the power transformer body, the detection module and the height adjustment module and is used for determining the contact pressure of the tapping switch according to the variance of the output voltage of the power transformer in a plurality of detection periods or determining the closing height of the semi-closed shell close to one side of the input line of the power transformer according to the variance of the output voltage of the power transformer in a plurality of detection periods and the horizontal swing width of the input line of the power transformer,
and re-determining the closing height of the semi-closed shell close to one side of the input line of the power transformer according to the ambient temperature between the power transformer body and the semi-closed shell, or determining the turn-in number of the primary coil winding in the coil winding according to the operation noise intensity of the power transformer body;
the height adjustment module includes:
the movable shell is partially arranged above the semi-closed shell and is used for expanding the closed area of the semi-closed shell;
the electric telescopic rod is connected with the movable shell and is used for adjusting the closing height of the semi-closed shell by changing the vertical height of the movable shell;
the control module obtains a plurality of output voltage values in a plurality of historical operation periods of the power transformer body, the operation duration from the operation start time of each historical operation period to the obtaining time of the output voltage is the same, the control module judges that the stability of the operation process of the power transformer is lower than the allowable range under the condition of a preset first variance and a preset second variance, wherein,
the control module judges and adjusts the contact pressure of the tapping switch under the condition of the preset first variance;
the control module preliminarily judges that the connection stability of the power transformer input line and the power transformer is lower than an allowable range under the condition of the preset second variance, and secondarily judges the connection stability of the power transformer input line and the power transformer according to the horizontal swing width of the power transformer input line;
the preset first variance condition is that the variance of the output voltage of the power transformer is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the output voltage of the power transformer is larger than the preset second variance; the preset first variance is smaller than the preset second variance;
the contact pressure of the tap switch after adjustment is determined by the difference value between the variance of the output voltage of the power transformer and the preset first variance;
the control module obtains the horizontal swing width of the power transformer input line under the condition of the preset second variance, judges that the connection stability of the power transformer input line and the power transformer is lower than an allowable range when the horizontal swing width of the power transformer input line is larger than the preset width, and determines the closed height of the semi-closed shell close to one side of the power transformer input line;
and determining the closing height of the semi-closed shell at one side close to the input line of the power transformer based on the difference value between the horizontal swing width of the input line of the power transformer and the preset width.
2. The adaptive power transformer of claim 1, wherein the control module obtains an ambient temperature between the power transformer body and the semi-enclosed housing upon completion of the initial adjustment of the enclosure height of the semi-enclosed housing near the input line side of the power transformer, and determines that the safety of the power transformer is below the allowable range under a preset first temperature condition and a preset second temperature condition,
the control module judges that the closing height of the semi-closed shell close to one side of the input line of the power transformer needs to be redetermined under the preset first temperature condition;
the control module preliminarily judges that the load stability of the power transformer is lower than an allowable range under the preset second temperature condition, and secondarily judges the load stability of the power transformer according to the running noise intensity of the power transformer body;
the preset first temperature condition is that the ambient temperature between the power transformer body and the semi-closed shell is greater than the preset first temperature and less than or equal to the preset second temperature; the preset second temperature condition is that the ambient temperature between the power transformer body and the semi-closed shell is greater than the preset second temperature; the preset first temperature is less than the preset second temperature.
3. The adaptive power transformer of claim 2, wherein the control module redetermines the enclosure height of the semi-enclosure proximate the power transformer input line side based on a difference between an ambient temperature between the power transformer body and the semi-enclosure and the preset first temperature.
4. The adaptive power transformer of claim 3, wherein the control module makes a secondary determination of the load stability of the power transformer based on the operating noise intensity of the power transformer body at the preset second temperature condition, wherein,
the control module secondarily judges that the load stability of the power transformer is lower than an allowable range under the condition of preset noise intensity, and determines the number of turns of the primary coil winding;
the preset noise intensity condition is that the running noise intensity of the power transformer body is larger than the preset noise intensity.
5. The adaptive power transformer of claim 4, wherein the control module determines the number of turns of the primary winding based on a difference between the operating noise intensity of the power transformer body and the predetermined noise intensity under the predetermined noise intensity condition, wherein the number of turns of the primary winding is inversely proportional to the difference between the operating noise intensity of the power transformer body and the predetermined noise intensity.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107103977B (en) * | 2017-06-20 | 2019-08-13 | 浙江德力西电器有限公司 | A kind of power transformer |
| CN112242748A (en) * | 2020-12-01 | 2021-01-19 | 中电科西北集团有限公司 | Monitoring equipment for monitoring galloping of transmission conductor and installation method thereof |
| CN113091879A (en) * | 2021-04-01 | 2021-07-09 | 陕西电力建设集团有限公司 | High tension transmission line wire wind detection device that shakes |
| CN114111891A (en) * | 2021-11-09 | 2022-03-01 | 国网辽宁省电力有限公司丹东供电公司 | High-voltage power transmission channel conductor and spanning object safety distance detection early warning system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107103977B (en) * | 2017-06-20 | 2019-08-13 | 浙江德力西电器有限公司 | A kind of power transformer |
| CN112242748A (en) * | 2020-12-01 | 2021-01-19 | 中电科西北集团有限公司 | Monitoring equipment for monitoring galloping of transmission conductor and installation method thereof |
| CN113091879A (en) * | 2021-04-01 | 2021-07-09 | 陕西电力建设集团有限公司 | High tension transmission line wire wind detection device that shakes |
| CN114111891A (en) * | 2021-11-09 | 2022-03-01 | 国网辽宁省电力有限公司丹东供电公司 | High-voltage power transmission channel conductor and spanning object safety distance detection early warning system |
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