KR101155105B1 - An LED Terminal Block For Sequence Check - Google Patents

Abstract

In the present invention, the terminal block is composed of DC + terminals and DC- common terminals. Each of the DC + terminals includes a circuit in which light emitting diodes, resistors, and diodes are connected in series, and each DC- circuit becomes a common terminal. In addition, the DC- circuit relates to an LED terminal block for checking the control circuit having a switching switch (43SW) that can be switched between the 'control circuit test mode' and 'normal operation mode'.

Description

LED terminal block for control circuit check {An LED Terminal Block For Sequence Check}

In the present invention, a terminal block is composed of DC + terminals and DC- common terminals. Each DC + terminal includes a circuit in which a light emitting diode (LED), a resistor, and a diode are connected in series, and each DC- circuit is common. It is a terminal, and the DC- circuit relates to an LED terminal block for controlling the control circuit connected with a switching switch (43SW) that can be switched between 'control circuit test mode' and 'normal operation mode'.

Conventionally, a system for remotely controlling a power facility in a substation uses a remote substation (control cable) located in a substation that converts control commands of the feed substation into substation control power via a communication line through a feed substation that monitors and controls the substation facilities at a distance. It consists of on-site power facilities in the substation (see Fig. 1).

Terminal blocks are interconnected between the equipment to be connected with the control cable and the equipment, and the terminal block used in this case is a structure that is fixed to the conductor bar by using bolts so that both control cables can be simply connected (see Fig. 2).

That is, a general terminal block is composed of a conductor bar having a control cable connecting bolt mounted on an insulated terminal support so that the control cable and the control cable can be easily connected using bolts as shown in FIG.

To open the site breaker at the feeder branch, close the control contact ① and the DC + → terminal block terminal ① → field equipment coil → terminal block terminal ⑦ → DC-is excited and the breaker is opened (see Fig. 3).

Prior art related to the present invention should actually control the field equipment in order to check whether the control signal in the feed station is properly transmitted to the field equipment, in this case there is a problem that requires a power outage of the field equipment.

Another conventional technology related to the present invention is a circuit tester (also known as a circuit tester that arrives at a field facility when a control signal is disconnected from a terminal block and a control signal is sent remotely, in order to test without the above power failure). Tester by measuring the voltage (see Fig. 1).

After checking the soundness of the circuit, connect the control cable again.In the process of disconnecting and connecting the control circuit, the control circuit may be damaged due to a fault caused by contact of the control power supply or a faulty wiring during the reconnection after the test is completed. There is a problem that is caused.

The problem to be solved by the present invention is to configure the light emitting diode to generate light in the state that the voltage is applied to the terminal block to check the health of the control circuit in the connected state without disconnecting the wires of the control circuit and the health of the control circuit This is to significantly reduce the time required by confirming safely and quickly.

Another problem to be solved by the present invention has a switching switch (43SW) configured to switch between the health check mode and the normal mode of the control circuit without disconnecting the control cable, so that the circuit for checking the health of the control circuit in the normal mode is It is physically separated so that the control circuit can operate stably.

Another problem to be solved by the present invention will continue in the form of DC 125V or 24V, the control power of the field equipment, the IT between the control console and the field equipment is continued, and as the IT or programming proceeds to check the integrity of the circuit The necessity will increase, so that the health of the control circuit can be confirmed more easily and quickly.

In order to solve the problem of the present invention, a terminal block is composed of DC + terminals and DC- common terminals in order to check whether a control signal from a power distribution center is transmitted to a field facility, and each of the DC + terminals includes a light emitting diode (LED) and a resistor. In this case, a circuit in which diodes are connected in series is configured, and each DC- circuit becomes a common terminal, and the DC- circuit has a switching switch (43SW) that can be switched between 'control circuit test mode' and 'normal operation mode'. An LED terminal block for checking a control circuit is provided.

According to another aspect of the present invention, after testing the health of the control circuit in the control circuit test mode using a switch for switching the control circuit test mode or the normal operation mode, the normal operation mode When switching to ', the test circuit is physically open from the control circuit is configured so as not to affect the control circuit to provide an LED terminal block for the control circuit confirmation that can be stable and fast test.

In another aspect of the present invention, the circuit is configured by varying the resistance value in order to limit the current flowing to the light emitting diode (LED) so that all of the DC 125V or 24V, which is the power supplied from the feeder, can be easily applied. In order to prevent malfunction due to burnout of components or circuits, it is a safety device that induces a current to flow in one direction to provide a LED terminal block for checking a control circuit with durability, stability and reliability by connecting a diode.

According to the present invention, the light emitting diode emits light in a state in which voltage is applied to the terminal block for checking the health of the control circuit in a connected state without disconnecting the wires of the control circuit, thereby ensuring the safety and speed of the control circuit. This can be advantageously confirmed and the inspection time can be shortened.

Another effect of the present invention is to have a switch (43SW) configured to switch between the health check mode and the normal mode of the control circuit without disconnecting the control cable, so that the test circuit is physically open from the control circuit in the normal mode to control It is to make the circuit operate stably.

Another effect of the present invention will continue in the form of DC 125V or 24V control power of the field equipment, the IT between the control console and the field equipment continues, the necessity to check the integrity of the circuit as the IT or programming progress It will be higher, so that easier and faster control circuit health checks can be made.

1 is a view showing the position of the remote element located in the terminal block
2 shows a detailed configuration of a terminal block;
3 and 4 are diagrams showing the circuit configuration of a conventional terminal block.
5 shows a circuit configuration according to the present invention.
6 is a diagram showing a circuit configuration according to the present invention in the overall control circuit;
<Description of the symbols for the main parts of the drawings>
11; Terminal block 12; Field equipment
13; Light emitting diodes 14; resistance
15; Diode 16; Selector switch

Hereinafter, the present invention will be described in detail. In the present invention, the terminal block is composed of DC + terminals and DC- common terminals in order to check whether the control signal at the power supply branch is well transmitted to the field equipment, and each DC + terminal can visually check the integrity of the circuit. A light emitting diode (LED) is connected.

The light emitting diode (LED) is connected with a resistor for limiting the current supplied to the light emitting diode (LED) in series and a diode for inducing the current to flow in one direction.

Each DC-circuit becomes a common terminal, and the DC-circuit is provided with a switching switch 43SW for switching between the control circuit test mode and the normal operation mode. A specific embodiment according to the present invention will be described.

<Examples>

&Lt; Example 1 >

A first embodiment of the present invention will be described with reference to the drawings. The first embodiment is a case where the switching switch 43SW that can be switched between the control circuit test mode and the normal operation mode is fixedly installed on one side of the terminal block.

3 and 4 show a circuit configuration of a conventional terminal block, and FIG. 5 shows a circuit configuration according to the present invention.

In order to check the soundness of the control circuit in the conventional terminal block, check the technical configuration by measuring the voltage with a circuit tester to see if the control signal arrives at the facility when the control circuit wire is disconnected from the terminal block and the control signal is sent remotely. There is a problem that is time-consuming and risk of incorrect wiring.

In order to solve the above problems, the light emitting diodes 13 and LEDs are connected to each DC + terminal so that the soundness of the circuit can be visually checked in each DC + terminal in order to check whether the control signal at the power distribution center is well transmitted to the field equipment. It is.

The light emitting diodes 13 and LEDs are connected to a resistor 14 for limiting the current and voltage supplied to the light emitting diodes 13 in series and a diode 15 for inducing the current to flow in one direction. do.

Each DC-circuit becomes a common terminal, and the DC-circuit is fixedly provided with switch switches 16 and 43SW for switching between the control circuit test mode and the normal operation mode.

The switching switch 16 is placed in the 'normal operation mode' during operation, and when the integrity of the control circuit is tested, the switching switch 16 is switched to the 'control circuit test mode' to check whether the light emitting diodes 13 and LEDs emit light. It is configured to check.

In the normal operation mode, the switch circuit 16 is configured to be open so that the test circuit to which the LED 13, the resistor 14, and the diode 15 are connected can be completely separated from the control circuit.

The role of the elements of the component circuit according to the present invention will be described.

○ The LED 13 emits light when DC + and DC- voltages are applied to both ends of the electronic device and the current flows in the circuit, thereby checking whether the voltage is normally applied.

○ The resistor 14 divides the voltage by connecting to the LED in series so that a voltage and a current suitable for the LED rated voltage are applied.

○ The diode 15 is inserted as a safety device that induces a current to flow in one direction in order to prevent malfunctions caused by burnout of components or circuit contact.

○ Switching switch (16, 43SW) is a switch configured to select the test circuit and the steady-state operating circuit to check the integrity of the control circuit.

Next, the operation in the case of switching the switch 16 to the normal operation mode will be described in detail with reference to FIG.

In the normal operation mode, when the control console sends a control signal to start the field equipment coil (TX), the control signal is transmitted to the signal processing device through the communication line, and the control voltage (DC 125V) from the signal processing device. Or DC 24V).

According to the control command, the DC + voltage is applied to the front end of the switching switch 43SW in the signal processing device, and the coil TX is activated by the applied DC + voltage.

Next, the operation of the control circuit test mode will be described with reference to FIGS. 5 and 6.

In the control circuit test mode, when the control console sends a control signal, the coil TX, which is an on-site facility, does not start because the control circuit is separated by the switching switch 43SW. Instead, the coil TX of FIG. 6 is switched by the switching switch 43SW. The LED is turned on through the red line.

From the remote control station to the terminal block just before the field equipment, the circuit is configured for quick confirmation at once.

&Lt; Example 2 >

It looks at a specific embodiment 2 according to the present invention. The second embodiment is a case where the switching switch 43SW for switching between the control circuit test mode and the normal operation mode is removed. By connecting LED, resistor, and diode in series to DC + terminal, it can be configured to check the soundness of control circuit by checking whether control signal is normally input through LED even in operation state.

Example 3

It looks at with respect to the third embodiment according to the present invention. In the third embodiment, the switching switch 43SW and the diode which can be switched to the control circuit test mode and the normal operation mode are removed. In the third embodiment, the malfunction of the control circuit is not a problem. In this case, the LED and the resistor are connected in series to the DC + terminal to check whether the control signal is input to the LED even in the operating state, thereby ensuring the integrity of the control circuit. Can be configured to check.

In Examples 1, 2, and 3, by adding an acoustic signal device in parallel with the LED, it can be configured to check the soundness of the control circuit in both sound and visual. In the case of the second and third embodiments, the addition of the acoustic signal device is preferably configured so as not to operate in the steady state in order to prevent continuous noise generation.

The terminal block according to the present invention may be alternately configured as DC +, DC-, DC +, DC- or optionally configured as needed.

In Examples 1, 2, and 3, the DC + power may be configured to be DC 125 V or DC 24 V in consideration of the DC power supplied to the feeder.

The changeover switch may be configured to be operated manually by the operator during the test or may be configured to be operated by an electronic circuit.

In the present invention, in order to confirm that the control signal in the feeder is properly transmitted to the field equipment, each DC + terminal includes a circuit in which a light emitting diode (LED), a resistor, and a diode are connected in series, and each DC- circuit has a common terminal. The switch is installed in the DC-circuit to provide a terminal block that can reduce the inspection time by safely and quickly checking the health of the control circuit.

Claims (4)

In the terminal block for checking the soundness of the control signal,
A light emitting diode connected to each DC + terminal for checking the integrity of the control circuit;
A resistor connected in series to the light emitting diode such that a voltage and a current corresponding to the rated voltage of the light emitting diode are applied thereto;
A diode in the control circuit test circuit as a safety device that induces a current to flow in one direction to prevent malfunction due to burnout of the terminal block components or contact of the circuit; And
It is installed adjacent to the DC- terminal and consists of a control circuit test mode for checking the integrity of the control circuit and a switching switch for selecting the normal operation mode.
Each DC + power supply consists of a 125V or 24V terminal block configured for use in a DC circuit to verify the integrity of the control circuit. delete The method according to claim 1,
And a terminal block for checking the soundness of a control circuit in which an acoustic signal device is further installed in parallel with the light emitting diode so as to generate sound when testing the soundness of the control circuit. delete

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