KR200403401Y1 - Control Switch for Plug Board - Google Patents

Abstract

The present invention relates to a control switch installed in a switchboard panel to remotely monitor a breaker or disconnector, which is a protection facility on a power system, and a failure state in a switchboard facility of an unmanned or manned substation. A lamp indicating the state of the switch is employed as a bicolor LED lamp in which LEDs having different colors are connected in parallel in opposite directions, and the respective colors of the bicolor LED lamps emit light according to the position of the handle of the operation switch. The operation switch for switchboard which comprised the wiring circuit is related.

Description

Control switch for switchboard {Control Switch for Plug Board}

The present invention relates to a control switch installed in a switchboard panel to remotely monitor a breaker or disconnector, which is a protection facility on a power system, and a failure state in a switchboard facility of an unmanned or manned substation. A lamp indicating the state of the switch is employed as a bicolor LED lamp in which LEDs having different colors are connected in parallel in opposite directions, and the respective colors of the bicolor LED lamps emit light according to the position of the handle of the operation switch. The operation switch for switchboard which comprised the wiring circuit is related.

In general, the substation is a place where the alternating current voltage is changed, and mainly serves to change and maintain the voltage of both lines to a preset value by using a transformer in connecting the lines and the lines having different operating voltages. The substation's power system is exposed to natural disasters and, depending on its use, there are risks of breakdowns and accidents due to overload, deterioration, and other abnormalities. Various protection facilities are installed to minimize the range and duration and for quick recovery.

As an important protection facility of such a substation, many circuit breakers and disconnectors are used. Circuit breaker (CB) is a facility used to cut off load current and blackout the required section, and a disconnection switch (DS) is used to change the disconnected connection state of a disconnected line or facility, but unlike the above breaker It is a facility that cannot cut off load current or fault current. In order to efficiently control the breaker or disconnector as described above, the substation is equipped with a switchboard in which the remote control and monitoring devices are concentrated in the substation and the operation switch of the breaker or disconnector is installed in the switchboard. .

In the operation switch of the circuit breaker or disconnector as described above, a switch 10 connected to the circuit breaker 100 or the disconnector (not shown) is conventionally attached on the operation panel 40 of the switchboard as shown in FIG. The ON / OFF of the circuit breaker 100 provided on the power transmission line 200 is controlled by this switch 10.

In general, a discrepancy switch, which is a discrepancy determination switch, is used as an operation switch of a breaker or disconnector attached to a switchboard. As shown in FIG. 1, the discrepancy switch includes at least two connection terminals. A multiple connection switch having (60), comprising a lamp connection terminal 70 having two terminals on the front side and a lamp 20 connected to the lamp connection terminal 70, and an upper side of the lamp connection terminal 70; The handle 30 is made of a transparent or translucent material is inserted.

The operation of the circuit breaker or disconnector by the discrepancy switch as described above will be briefly described as follows, and for convenience, only the operation of the circuit breaker will be described.

The breaker 100 has a contactor (not shown) for monitoring on-site operating conditions on the transmission line 200, and the position of the handle 30 of the switch 10 and the transmission line obtained by the contactor ( When the field operating conditions on the 200 are matched, the lamp 20 connected to the lamp connection terminal 70 of the switch 10 is turned off, but the position of the handle 30 is set to the power line 200. In case of inconsistency with the on-site operation condition, the lamp 20 is turned on by using a known timer relay (not shown) to indicate an abnormal situation to the switchboard monitor so that the monitor takes appropriate measures.

According to the conventional method as described above, whether the transmission line 200 is abnormal is indicated by one lamp 20 connected to the switch 10, so if the lamp 20 is not light and does not light up Even if the on-site operating conditions on the transmission line 200 are inconsistent with the position of the handle of the switch 10, there was a problem that the monitor cannot confirm this.

In addition, in view of the above problems, a method of using the two lamps of different colors, so that the lamps of different colors are always turned on according to the matching conditions of the field operating conditions, but in this case, one lamp is further added. In order to install, additional maintenance work such as drilling an insertion hole for additionally attaching a lamp to an existing switchboard operation panel 40 and adding an additional lamp connection terminal had to be wasted, resulting in waste of resources and costs. .

The present invention was devised to solve the above problems, the lamp used for the switch adopts a light emitting diode (LED) lamp which is a low-power and durable element, and additional maintenance work on the existing operation panel Without providing the operation switch for the switchboard which emits two colors respectively according to the set position of the handle of the switch.

The configuration of the present invention for achieving the above object, in the operation switch for the switchboard having a lamp for controlling the operation switch of the circuit breaker connected to the transmission line and indicating the state of the circuit breaker, the lamps each have a different color A bicolor LED lamp in which LEDs are connected in parallel to each other in parallel to each other, and has a configuration of an operation switch for a switchboard having wiring circuits in which respective colors of the bicolor LED lamps emit light according to the position of the handle of the operation switch. .

Hereinafter, with reference to the drawings will be described in detail the configuration of a preferred embodiment of the present invention.

2 is a configuration diagram of a switch for operation switchboard of the embodiment of the present invention. As shown in the drawings, the operation switch for the inventive switchboard has a circuit breaker 100 connected to a contactor (not shown) installed on the power transmission line 200 through the contacts 60 of the switch 10. Connected to and controlled to its ON or OFF state.

In addition, the lamp connection terminal 70 of the switch is a terminal that is connected to the LED lamp 50, the LED lamp 50 of the present invention connected to the lamp connection terminal 70 has a different color LED Small bicolor LED lamps 50 connected in parallel in opposite directions.

As shown in FIG. 2, the bicolor LED lamp 50 includes a first contact point P1 to which an anode of a first LED (LED 1) and a cathode of a second LED (LED 2) are connected and the first LED ( A bi-color LED lamp 50 having a second contact point P2 to which a cathode of LED 1) and an anode of the second LED (LED 2) are connected,

When a current is applied to the first contact point P1 and the second contact point P2 through a DC power source, when the direction of the current is the direction of the second contact point P2 from the first contact point P1, When one LED (LED 1) emits light and the direction of current is the direction of the first contact point (P1) from the second contact point (P2), the second LED (LED 2) emits light. In addition, in consideration of the size for enabling the insertion for the connection with the lamp connection terminal 70 of the switch 10, it is preferable to manufacture a compact using a thin LED element.

In the present exemplary embodiment, when the handle 30 of the switch 10 is located at the ON direction position 41, the blue first LED (LED 1) included in the lamp 50 emits light, and the switch When the handle 3 of (10) is located in the OFF direction position 42, the switch circuit is wired so that a red second LED (LED 2) may emit light.

In addition, the lamp connection terminal 70 of the switch 10 is equipped with a handle 30 as described above to operate the switch 10, the handle 30 is made of a transparent or translucent material to the The light emission of the LED lamp 50 can be projected.

Meanwhile, each terminal for converting the light emission state of the LED lamp 50 according to the ON / OFF control of the circuit breaker 100 connected to the respective terminals 60 of the switch 10 and the position of the handle 30 ( The illustration of the state of the actual wiring between the 60 is a state omitted in the drawings, the wiring thereof will be described in detail with reference to the circuit diagram of the present invention described below.

3 is a wiring circuit diagram of a switchboard operation switch of the embodiment of the present invention, Figure 4 is an operation diagram of the switchboard operation switch of the embodiment of the present invention.

Referring to FIG. 3, the switch 10 according to the embodiment of the present invention uses two switches having one switch, and a discrete switch having six switches having a total of 12 terminals is used. A first switch S1 consisting of a third terminal and a fourth terminal of the second switch S2, a third switch S3 consisting of 5 and 6 terminals, a terminal consisting of 7 and 8 terminals It consists of a fourth switch (S4), a fifth switch (S5) consisting of the 9th terminal and the 10th terminal, a sixth switch (S6) consisting of the 11th terminal and the 12th terminal.

One side contact C of the operation switch CB-S of the circuit breaker 100 connected to the contactor C of the power transmission line 200 is connected to the first terminal of the first switch S1, and the operation switch ( The other contact T of the CD-S is connected to the third terminal of the second switch S2, the second terminal of the first switch S1 and the fourth terminal of the second switch S2 are They are connected to each other and are connected to terminal 5 of the third switch S3 and terminal 7 of the fourth switch S4.

At this time, the first switch (S1) and the second switch (S2) has a connection state that is opposite by the mechanical structure of the switch, the third switch (S3) and the fourth switch (S4) and the fifth The switch S5 and the sixth switch S6 also have opposite connection states due to the mechanical structure of the switch.

When the first switch S1 is connected and the second switch S2 is in an open state, the operation switch CB-S of the breaker 100 opens between each contact C and T to open the breaker. Is wired so as to be OFF, and when the first switch S1 is in an open state and the second switch S2 is in a connected state, the contacts C and T are connected to each other so that the breaker is turned on (the above). The wiring between the first switch, the second switch, and the breaker operation switch may be configured using a known relay switch or the like, and thus detailed description thereof will be omitted). When the breaker is turned on, the interruption of the load current or the required section by the breaker as described above is interrupted.

In addition, the sixth terminal of the third switch S3 is connected to the tenth terminal of the fifth switch S5 and the first contact point P1 of the LED lamp 50, and the eighth of the fourth switch S4. The number 1 terminal is connected to the number 12 terminal of the sixth switch S6 and the second contact point P2 of the LED lamp 50.

In addition, the 9th contact of the fifth switch (S5) and the 11th contact of the sixth switch (S6) is connected to each other and grounded (GND), the fifth contact of the third switch (S3) and the fourth switch ( The seventh contact of S4) is connected to each other and is connected to one polarity DC + of the DC power supply DC, and the other polarity DC- of the DC power supply DC is grounded (GND).

On the other hand, one side contact (P1) of the LED lamp 50 is connected to the anode of the blue first LED (LED1) and the cathode of the second red LED (LED2) of the blue, the other side contact of the LED lamp 50 ( P2) is connected to the cathode of the first LED (LED 1) and the anode of the second LED (LED 2), the voltage regulating resistor (RS) is connected in series to the anode input terminal of each LED (LED1, LED2).

Control switch 10 for the switchboard according to the embodiment of the present invention made as described above when the position of the handle 30 is changed by the mechanical operation structure of the disk switch, the connection state of each switch is changed in conjunction. This will be described with reference to FIGS. 4A to 4B.

Figure 4a is an operation diagram of the switch of the present invention, Figure 4b is a schematic diagram showing the mechanical operation of the handle of the switch of the present invention.

FIG. 4A shows the connection state of each contact point of the switch used in the embodiment of the present invention, and the order of each contact point of each of the switches S1, S2, S3, S4, S5, and S6 shown in the circuit diagram of FIG. It is arranged as it is, the position of the handle 30 is arranged in the vertical axis, the shaded section shown on the horizontal axis is to indicate the connection state of the switches according to the position of the handle 30.

In addition, Figure 4b is a schematic diagram showing the movement of the handle of the switch of the embodiment of the present invention, the handle is a position in which the handle is moved downward by an angle θ from a position in the horizontal state, that is, a straight line connecting the O point and the N point That is, to the position of the R point can be moved while pressing the handle, the handle moved to the R point is returned to the horizontal state again by the restoring force by the mechanical structure of the switch acts.

Referring to the operation of the above-described handle in relation to the operation diagram of FIG. 4A, when the handle is in the horizontal state, it is in the E state on the longitudinal axis of the operation diagram, in which the third switch S3 and the sixth switch S6. ) Is simultaneously connected by the mechanical operating structure of the switch, and in this state, when the handle is pushed to the point R, it is in the EB state on the vertical axis of the operation diagram, and the third switch S3 and The connection state of the sixth switch S6 remains unchanged, but in this state, the first switch S1 is additionally connected.

In addition, the handle can be moved while pressing the handle to a position in the vertical state, that is, a position moved in a right direction by an angle θ from a straight line connecting the O point and the N 'point, that is, the position of the R' point, and R The handle moved to the point ', as described above, is restored to the vertical state again by the restoring force by the mechanical structure of the switch.

Referring to the operation of the above-described handle in relation to the operation diagram of FIG. 4A, when the handle is in the vertical state, it is in the A state on the longitudinal axis of the operation diagram, in which the fourth switch S4 and the fifth switch S5. ) Is simultaneously connected by the mechanical operating structure of the switch, and in this state, when the handle is pushed to the point R ', it is in the AB state on the vertical axis of the operation diagram, and in this position, the fourth switch S4 Although the connection state of the fifth switch S5 is not changed, in this state, the second switch S2 is additionally connected.

In addition, when the handle is moved from the horizontal state to the vertical state, the handle can be switched without pressing the handle, and is immediately converted from the E state to the A state on the vertical axis of the operation diagram to switch the third switch S3 and the sixth switch S6. Is converted from the connected state to the open state, and conversely, the fourth switch S4 and the fifth switch S5 are converted into the connected state from the open state.

On the other hand, the switch of the present invention may be used as long as the discrete switch having the operation state as described above, in the embodiment of the present invention of the 12-terminal standard manufactured by Klaus & Naimer of Austria RK-7697, a Discrepancy Switch, was used. This switch is a discrete switch with two contacts in one switch that has a total of six switches.

Next, the operation of the circuit of the present invention will be described with reference to the circuit diagram of FIG. 3 and FIG. 5. 5 is an operation state diagram of a switchboard operation switch of the embodiment of the present invention, Figure 5a is a diagram showing the lighting state of the operation switch when the circuit breaker is OFF and the circuit breaker is in the OFF standby state, Figure 5b is a circuit breaker is ON Is a figure showing the lighting state of an operation switch when the circuit breaker is in the ON state and the breaker is in the ON standby state.

First, referring to FIG. 3, there is usually no abnormality in the transmission line 200, that is, no abnormal signal is generated by a contactor (not shown) of the circuit breaker 100 installed on the transmission line 200. In the normal state, when the monitor of the switchboard presses and releases the handle of the switch 10 attached to the panel 40 of the switchboard from the horizontal state by an angle θ in the downward direction, the handle returns to the horizontal state and at the same time, the switch Is switched from the OFF standby state to the OFF state.

At this time, when the handle is pressed downward, the first switch (S1), the third switch (S3) and the sixth switch (S6) are connected at the same time, starting from the first switch (S1), the third switch (S3) And the first LED (LED 1), the sixth switch (S6), the ground (GND) and the DC power supply (DC) of the LED lamp 50 is closed, the first LED (LED 1) is turned on, As the first switch S1 is connected and the second switch S2 is opened, both the contacts C and T of the breaker switch CB-S are opened so that the breaker 100 is in an OFF state (the breaker is OFF state).

Subsequently, when the handle returns to the horizontal state, only the first switch S1 is opened in the closed circuit, and at this time, the third switch S3, the first LED LED 1, the sixth switch S6, and the ground ( Since the GND) and the DC power supply DC form a closed circuit, the first LED (LED 1) is continuously turned on to emit blue light, and the breaker 100 continues to wait in the OFF state (OFF standby state of the breaker). )

When an abnormal signal is generated by a contactor (not shown) of the circuit breaker 100 installed on the power transmission line 200 in the OFF standby state of the circuit breaker as described above, a known monitoring means connected to the contactor C ( Alarm (not shown) installed in the switchboard by the (not shown) operates to output the alarm sound.

Then, the switchboard monitor recognizes the alarm sound of the alarm and, as necessary, operates the handle of the switch 10 to cut off the load current connected to the power transmission line 200 or to interrupt the required section. Will be turned on.

To this end, when the monitor operates the handle 30 from the horizontal state in the OFF standby state to the vertical state, the third switch S3 and the sixth switch S6 are opened and the fourth switch S4 and the fifth switch. Since the switch S5 is grounded, the second LED (LED 2), the fifth switch (S5), the ground (GND), and the DC power supply (DC) form a closed circuit, and the second LED (LED 2) is turned on to turn red. The light is emitted and is in a waiting state (ON standby state of the breaker) so that the breaker 100 can be turned on.

In the above standby state of the circuit breaker, when the monitor pushes the handle by the angle θ in the right direction in the vertical state to turn the circuit breaker 100 on, the second switch S2 is connected and the first switch S1 at the same time. Due to the opening, both contacts C and T of the circuit breaker switch CB-S are connected to the circuit breaker 100 to be turned on to operate the circuit breaker.

At this time, the second switch S2, the fourth switch S4, and the fifth switch S5 are connected at the same time, starting from the second switch S2, and the second of the fourth switch S4 and the LED lamp 50. The LED (LED 2), the fifth switch (S5), the ground (GND) and the DC power supply (DC) forms a closed circuit, the second LED (LED 2) is turned on in red.

Subsequently, when the handle 30 returns to the horizontal state again, only the second switch S2 is opened in the closed circuit, so that the fourth switch S4, the second LED (LED 2), and the fifth switch S5 are Since the ground (GND) and the DC power supply (DC) forms a closed circuit, the second LED (LED 2) is continuously turned on to emit red light, and the circuit breaker 100 remains in the ON state (it is ON of the circuit breaker). Standby state).

When the repair for the abnormal condition of the power transmission line 200 is completed in the ON standby state of the breaker as described above, the switchboard monitor turns the handle 30 of the switch back to the horizontal state to put the breaker in the OFF standby state and then lowers it again. Press the switch in the direction to turn off the breaker completely, and then release the handle. The breaker returns to the normal state where the breaker is turned off, and the first LED (LED 1) turns on and turns blue.

On the other hand, the wiring circuit of the inventive switch configured as described above can be applied as the same configuration to the circuit breaker 100, as well as the above-described disconnecting device (not shown) and other protective equipment of the transmission line.

The operation switch for the inventive switchboard configured as described above is configured by using two lamps as compared to the conventional method using one lamp, so that LEDs having respective colors always emit light according to the position of the switch handle to turn on the lamp. Depending on whether or not the lamp failure can be immediately identified, there is an effect that can prevent inadvertent errors that may occur when monitoring the switchboard.

In addition, the conventional method of using two lamps is to install one more lamp to drill an insertion hole for additionally attaching the lamp to the existing switchboard operation panel, and to enlarge the connection terminal of the lamp due to the addition of the lamp. While additional maintenance work was required, the present invention uses a two-terminal bi-color LED lamp with a thin element that can be inserted into the existing discrete switch without any special maintenance work, making it easy to improve the equipment. It is a very useful design that has the effect of saving the cost of improvement.

1 is a configuration diagram of a conventional operation switch for switchboard;

2 is a block diagram of an operation switch of the embodiment of the present invention,

3 is a wiring circuit diagram of an operation switch of an embodiment of the present invention;

4a and 4b is an operation diagram of the operation switch of the embodiment of the present invention,

5A and 5B are operation state diagrams of the operation switch of the present invention embodiment.

Explanation of symbols on the main parts of the drawings

10; Switch 20; lamp

30; Handle 40; Control panel

50; LED lamp 60; Switch terminals

70; Lamp terminals

Claims (2)

A switch for controlling the operation switch CB-S of the circuit breaker 100 connected to the power transmission line 200 and using a discrepancy switch having a lamp indicating the state of the circuit breaker 100. To The lamps are bi-color LED lamps in which LEDs having different colors are connected in parallel in opposite directions. And a wiring circuit in which respective colors of the bicolor LED lamps emit light according to the position of the handle of the operation switch. The method of claim 1, wherein the wiring circuit, The first switch S1 having one side contact 1 connected to the one side contact C of the operation switch CB-S and the one side contact 3 connected to the other side contact T of the operation switch CB-S. A second switch S2 having; And A third switch S3 having one side contact 5 connected to the other side contacts 2 and 4 of the first switch S1 and the second switch S2 and the first switch S1 and the second switch ( A fourth switch S4 having one side contact 7 connected to the other side contacts 2 and 4 of S2; And The fifth switch S5 having one contact point 10 connected to the other contact point 6 of the third switch S3 and the one contact point 12 connected to the other contact point 8 of the fourth switch S4 The sixth switch S6; And An LED lamp (50) having a first contact point (P1) connected with the other contact point (6) of the third switch (S3) and a second contact point (P2) connected with the other contact point (8) of the fourth switch; And DC power connected between one side contact (5, 7) of the third switch (S3) and the fourth switch (S4) and the other contact (9, 10) of the fifth switch (S5) and the sixth switch (S6) (DC); It is configured to include, One contact point P1 of the LED lamp 50 is connected to the anode A of the first LED LED1 of one color and the cathode K of the second LED LED2 of the other color, and the LED lamp The other side contact P2 of 50 is connected to the cathode K of the first LED 1 and the anode A of the second LED 2. The first switch S1 and the second switch S2 have a connection state in which each switch is opposed by a mechanical structure, and according to the connection of the first switch S1 or the second switch S2, the operation switch ( CB-S) is opened and closed, The third switch S3 and the fourth switch S4 have a connection state in which each switch is opposed by a mechanical structure, The fifth switch S5 and the sixth switch S6 have a connection state in which each switch is opposed by a mechanical structure, Opening / closing of the third switch S3 and the sixth switch S6 is interlocked, and opening / closing of the fourth switch S4 and the fifth switch S5 is interlocked. The first LED (LED1) or the second LED (LED 2) of the LED) lights up the switch for the switchboard.