KR101749553B1 - Remote control and monitor apparatus of manual load switching type pad mounted transformer - Google Patents

Abstract

A ground-based transformer remote control and monitoring apparatus of a manual load-opening type is disclosed. The control unit includes a control terminal unit for transmitting and receiving the measurement information and the control command to the distribution intelligence server and for controlling the remote control of the load opening and closing type ground transformer, A detection and self-diagnosis unit for measuring the load current and the state of the insulation oil in the distribution line and transmitting the measurement information to the control terminal unit; A control unit receiving a control command for remote control from the control terminal unit or receiving a control signal for manual control from an operator; And an opening / closing device for changing the state of the load opening / closing device provided in the load opening / closing type ground-type transformer according to a control command or a control signal transmitted from the operation unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control and monitoring apparatus for a ground-type transformer,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a remote control and monitoring apparatus for a manually operated load-

The distribution intelligence is a function of measuring the current and voltage of the distribution line using the wired or wireless communication system and the remote opening / closing of the load switchgear in case of power distribution system failure to quickly isolate the fault zone and transmit the sound zone ). ≪ / RTI >

Remote control and control technology of ground transformer is required for implementation of distribution intelligence system in underground supply area. However, current ground transformer is in need of development of additional technology because it consists of manual operation structure that can not be operated remotely.

In other words, the distribution intelligent switch can be remotely controlled when the ground supply transformer supply system fails (or works) in the underground supply area. However, in case of the ground type transformer having a manual structure, the operator must visit the site and perform manual operation .

In this connection, Patent Document 1 described in the following prior art document discloses a method of replacing a ground transformer on an underground distribution line with a ground transformer provided with a load switch by an uninterrupted method.

Korean Patent Publication No. 2008-0041785 (published on May 4, 2008).

Accordingly, there is a need in the art for a remote operation and monitoring of a manual load-opening ground-type transformer.

In order to solve the above-mentioned problems, an embodiment of the present invention provides a remote operation and monitoring apparatus of a manually-operated load-opening type ground transformer. The remote operation and monitoring apparatus of the manual load open type ground transformer includes a control terminal unit for transmitting and receiving measurement information and a control command to a power distribution intelligent server for performing power distribution intelligent operation for a remotely controlled ground switch and a manual load openable type ground transformer; A detection and self-diagnosis unit for measuring the load current and the state of the insulation oil in the distribution line and transmitting the measurement information to the control terminal unit; Receives the control command from the control terminal unit when the remote control is selected, blocks the control command when the manual control is selected, receives the input for selection of one of the remote control and the manual control, An operation unit for receiving a control signal from an operator; And an opening / closing device for mechanically converting an opening / closing state of the load opening / closing device provided in the manual load opening type ground type transformer according to a control command or a control signal transmitted from the operating part.

In addition, the manually operated load-unloading type ground-based transformer remote control and monitoring apparatus may further include a power supply unit for supplying power for driving the manual load-opening type ground-type transformer remote control and monitoring apparatus.

Here, the detection and self-diagnosis unit may include: a load current detection unit installed in the manual load openable / closable ground type transformer to measure a load current and a fault current, and to transmit measurement information to the control terminal unit; A leakage current measuring device installed on a ground side wire of the manual load open type ground transformer to measure a leakage current and transmit the measurement information to the control terminal unit; And a sensor for measuring the state of the insulating oil, which measures the temperature and the flow rate of the insulating oil, and transmits measurement information to the control terminal unit.

In addition, the operation unit may receive an input from the operator for selection of one of the remote control and the manual control, and may disable the remote control by the distribution intelligence server when the manual control is selected.

Also, the opening / closing device can rotate the T-shaped contact of the load opening / closing device by 90 degrees by the power generated through the motor and the gear.

In addition, the means for solving the above-mentioned problems are not all enumerating the features of the present invention. The various features of the present invention and the advantages and effects thereof will be more fully understood by reference to the following specific embodiments.

By installing the remote operation and monitoring device of the manual load-opening type ground-type transformer according to the embodiment of the present invention in the load-opening type ground-type transformer operated in the distribution line of the underground supply area, the distribution of the manual load-opening type ground-type transformer through the communication network and the control terminal device The intelligent operation can be enabled.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a remote control and monitoring apparatus for a manual load open-type ground transformer according to an embodiment of the present invention; FIG.
Fig. 2 is a view showing an embodiment of the manual load open-type ground-based transformer remote control and monitoring apparatus shown in Fig.
FIG. 3 is a diagram for explaining a state change function according to switching of the load opening and closing apparatus shown in FIG. 2. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to "include" an element means that it may include other elements, rather than excluding other elements, unless specifically stated otherwise.

FIG. 1 is a block diagram of a remote operation and monitoring apparatus for a manually operated load-unloading type ground-type transformer according to an embodiment of the present invention. FIG. 2 shows an embodiment of the remote- Fig.

Referring to FIGS. 1 and 2, a manually operated load-unloading type ground-top transformer remote operation and monitoring apparatus 100 according to an embodiment of the present invention includes a control terminal unit 110, a detection and self-diagnosis unit 120, An opening / closing device unit 140, and a power supply device 150. As shown in FIG.

The control terminal unit 110 analyzes measurement information transmitted from the detection and self-diagnosis unit 120 and transmits various information (for example, measurement information) and control commands to the distribution intelligence server 10 through the repeater 20 And to control the remote control of the load-opening type ground transformer 30.

The control terminal unit 110 is implemented by a processor such as a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), and a field programmable gate array A communication function, and a memory for storing various data.

The detection and self-diagnosis unit 120 is for measuring the load current (fault current) to the distribution line and the state of the insulating oil and transmitting the measurement information to the control terminal unit 110.

For example, the detection and self-diagnosis unit 120 may be configured to include a load current (fault current) detection device 121, a leakage current measurement device 122, and an insulation oil state measurement sensor 123.

The load current (fault current) detecting device 121 can be implemented by using a Lokosky coil. The load current (fault current) detecting device 121 is installed on each of the high-voltage part elbow joints of the load-opening type ground transformer 30 to measure the load current and the fault current, Information to the control terminal unit 110.

The leakage current measuring device 122 may also be implemented using a Lokosky coil. The leakage current measuring device 122 may be installed on the ground side wire of the load openable type ground transformer 30 to measure the leakage current, ). ≪ / RTI >

The sensor 123 for measuring the state of the insulating oil can measure the temperature of the insulating oil and the flow rate, and can transmit the measurement information to the control terminal unit 110.

The control unit 130 controls the opening / closing unit 140 by remote control or on-site control (i.e., manual control). The control unit 130 controls the control unit 110, (140), or may receive a control signal for manual control and transmit the control signal to the switching unit (140).

For example, the operation unit 130 may be installed at an arbitrary position (for example, at the upper end of the transformer) of the load-unloading type ground-based transformer 30 to receive a control signal and transmit a control signal to the control terminal unit 110 ). ≪ / RTI >

In addition, the operation unit 130 may further include a safety function for preventing erroneous operation by remote control. For example, the operation unit 130 allows the operator to select the control mode as one of the remote control and the manual control, and when the manual control is selected, the remote control is disabled, thereby securing the safety of the field worker.

The switching device unit 140 receives control commands received from the distribution intelligence server 10 through the repeater 20 and received through the control terminal unit 110 and the operation unit 130 or input / (I.e., mechanically input or open) the state of the load opening / closing apparatus provided in the load openable type ground transformer 30 in accordance with the control signal that is input to the load opening /

For example, the opening / closing device unit 140 may include a support shaft connecting the drive side and the operation unit 130, and a rotary drive shaft transmitting power.

Closing device (31) provided in the load-opening type ground-based transformer (30) by the power generated by using a gear having a motor and a gear ratio larger than a predetermined value on the driving side of the opening / And may have a structure for rotating the T-shaped contacts by 90 degrees.

FIG. 3 is a diagram for explaining a state change function according to switching of the load switch device shown in FIG. 2. As shown in FIG. 3, the load switch device can have a total of four state change functions according to switching.

More specifically, the first position shown in FIG. 3A is a steady state operation, the second position shown in FIG. 3B is a power source side circuit opened state, the third position shown in FIG. And the fourth position shown in Fig. 3 (d) is the transformer circuit open state.

In the operation from the first position to the second position, the T-shaped contactor is rotated 90 degrees in the normal rotation direction, and the operation from the first position to the third position is performed by rotating the T-shaped contactor in the normal rotation direction by 180 degrees, Operation from the first position to the fourth position is possible by rotating the T-shaped contact by 90 degrees in the reverse direction.

The power supply 150 is for supplying power for driving the manually operated load-unloading terrestrial transformer remote control and monitoring apparatus 100 according to an embodiment of the present invention.

For example, the power supply unit 150 may supply driving power to the control terminal unit 110, the operation unit 130, and the opening / closing device unit 140. To this end, the power supply 150 may be supplied with the internal commercial power of the secondary side of the transformer, and may include an overcharge protection device and a battery.

According to the embodiment of the present invention as described above, it is possible to perform the distribution intelligent operation using the existing load-opening type ground-type transformer without installing a separate ground switch, thereby greatly reducing the investment cost for distribution intelligence .

In addition, it becomes possible to perform the distribution intelligence operation including the remote operation and monitoring function for the underground transformer supply system, so that the failure recovery and the work time can be greatly shortened, thereby reducing civil complaints related to power outage and contributing to improvement of power supply reliability. have.

The present invention is not limited to the above-described embodiments and the accompanying drawings. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Distribution intelligence server
20: Repeater
30: Load-lifting ground-type transformer
31: load switching device
100: Remote operation and monitoring device of manual overload type ground transformer
110:
120: Detection and self-diagnosis unit
121: Load current (fault current) detection device
122: Leakage current measuring device
123: Sensor for measurement of insulating oil status
130:
140:
150: Power supply

Claims (5)

A control terminal unit for transmitting and receiving measurement information and a control command to a power distribution intelligent server for performing power distribution intelligent operation for a remotely controlled ground switch and a manual load open /
A detection and self-diagnosis unit for measuring the load current and the state of the insulation oil in the distribution line and transmitting the measurement information to the control terminal unit;
Receives the control command from the control terminal unit when the remote control is selected, blocks the control command when the manual control is selected, receives the input for selection of one of the remote control and the manual control, An operation unit for receiving a control signal from an operator; And
And an opening / closing device for mechanically converting the opening / closing state of the load opening / closing device provided in the manual load opening / closing type ground-type transformer according to a control command or a control signal received from the operating unit.
The method according to claim 1,
Further comprising a power supply for supplying power for driving the manual load-opening ground-type transformer remote control and monitoring device.
The apparatus according to claim 1, wherein the detection and self-
A load current detecting device installed in the manual load open / close type ground transformer to measure a load current and a fault current, and to transmit measurement information to the control terminal unit;
A leakage current measuring device installed on a ground side wire of the manual load open type ground transformer to measure a leakage current and transmit the measurement information to the control terminal unit; And
And a sensor for measuring the state of the insulating oil for measuring the insulation oil temperature and the flow rate and transmitting the measurement information to the control terminal unit.
delete The method according to claim 1,
Wherein the opening / closing device unit rotates the T-shaped contactor of the load opening / closing device by 90 degrees by the power generated by the motor and the gear.

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