JPS63249409A - Enclosed switchboard - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application] This invention relates to measurement, control and protection circuits for closed switchboards.

[Conventional technology]

Figure 2 shows a circuit diagram when an electronic measuring device and an electronic combined delivery IJ relay are used on a conventional closed switchboard.
(11 is the main bus of the closed switchboard, (21 is the circuit breaker, (3)
is a voltage transformer, (41 is a phase current transformer, (6) is a voltage transformer, (6) is a voltage transformer secondary winding, and (7) is a voltage transformer tertiary winding. (8) is the control power bus, (4
0) is the electronic composite protection relay, 6 o'clock is the measurement/control display unit, &9) is the wiring for secondary voltage input from the secondary winding of the instrument transformer, (30) is the tertiary winding of the instrument transformer Wiring for zero-phase voltage input from Circuit, (33) is 岑!
1'' Input circuit to zero phase 1 from (4), (34
) is the total? 1111・A disconnection 6 from control display unit 0υ
(2) and the opening/closing status of circuit breaker (2).
(Control display unit) (7 No. 1 circuits displayed on 41J, ('(51 is the control display from the source bus (8)
5 Control power supply human power circuit to control display unit IJυ, μs)
is a circuit for displaying the operating elements of the Kameko type composite protection relay (Hvo) on the measurement/control/display unit, +37) is the secondary current circuit of the instrument current transformer (3), and (38) is the electronic 7 terminal blocks from which the contacts of the operating elements of the protective relay (4(2)) are drawn out for external use, (39) indicates its lead wire.

Next, the measurement/control and protection circuit configuration of the closed switchboard will be explained.

Secondary 1JL current circuit of instrument current transformer (3) - 3, ・Two forces and 岑 (self-transforming current i;
), the wiring for the pressure 42nd circuit 4th and 3rd circuit (clock and control power supply circuits (c) and (to) for instruments is 1.25mrr + 2
Alternatively, it may be a 2.0 mm2 vinyl wire, and the connection to the electronic mating protection rack 0) and the measurement/control/display unit 0 is a 7-wire type with a terminal block. Voltage transformer (31, secondary circuit of zero-phase current transformer (4) and voltage transformer (5) 9) and voltage transformer 3 in the meter field'
In the following circuit example, 2-0mm2 vinyl electric wire is conveniently used.
1 for the control circuits (31) and (2) of the disconnector (2) and the operation display circuit (support) of the electronic joint protection relay (40).
．． 25mm2 vinyl electric wire is used.

[Problem that the invention seeks to solve]

Since the conventional device is configured as described above, the operation and control circuit (31) of the circuit breaker (2) housed in a closed switchboard.

34), Instrument transformer secondary circuit ρ9), Instrument current transformer 2
Next time p132! , Zero-phase f-flow device secondary V6 (g) and control power supply circuit・28. The wires are wired with 1.25mm2 and 2.0mm2 vinyl wires, and the wiring to the electronic composite protection relay and measurement/control/display unit Oυ, which are L electronic devices, is mixed with the control wiring inside the panel. However, wiring to electronic devices with low voltage and current levels and other internal control wiring are not differentiated, and connections to electronic devices are connected to terminals with one screw at a time. Was. Further, each electronic device had to have its own auxiliary transformer for instrumentation, current transformer, power converter device ILT, and auxiliary relay for input/output.

This invention was made to solve the above problems, and by providing a relay auxiliary unit between the electronic equipment in the closed soldering board and the control circuit part other than the electronic equipment, The purpose of this invention is to divide and level electronic equipment-related circuits and non-electronic equipment control circuits, and to obtain a device that allows easy connection between electronic equipment and relay auxiliary units using connectors. In addition, auxiliary instrument transformers, current transformers, power distribution devices, input/output auxiliary relays, etc. that can be shared as much as possible with each electronic device are combined into a "rational configuration of measurement, control, and display circuit equipment." The purpose is to obtain a device according to the method.

[Means for solving problems]

The closed switchboard according to the present invention is a device control circuit.

Closed arrangement consisting of instrument f current transformer secondary circuit, zero-phase current transformer secondary circuit, instrument transformer secondary circuit, control power supply circuit, etc.! By installing a relay auxiliary unit in the 1li11@ circuit of the panel, the electronic device part in the control circuit and the conventional general control circuit can be separated, the control wiring can be leveled and organized, and the connection with the electronic device can be separated. By using a connector, it is possible to easily connect between the two.

[(dexterity)]

The closed switchboard in this invention has V in its control circuit.
By providing a relay auxiliary unit, it is possible to separate and level the electronic (aircraft) part and other control circuit parts in the control (2) circuit, and also to separate the electronic equipment and non-electronic control circuit parts. It can be easily connected with a connector.

[Embodiments of the invention]

Hereinafter, the upstream side of this invention will be explained with reference to the drawings.

In Figure 41, (1) is the main bus of the closed switchboard, (2)
is a circuit breaker, (3) is a voltage transformer, (4) is a zero-phase current transformer, (5) is a voltage transformer, (61 is a transformer secondary winding, (
7) is the tertiary winding of the instrument transformer, (8) is the control power supply circuit,
(9) is the middle #, auxiliary unit, (lO) is the electronic composite protection relay, t11+ is the electronic measurement/control/display unit), (12i is the output from the instrument transformer 62nd winding (6) Electronic composite protection relay (11+ and 6 in total)
11. Control and Display Unit (This is an auxiliary instrument transformer to reduce the voltage level input to 121.

(l) d This is an auxiliary instrument transformer that lowers the voltage level when inputting the output from the tertiary winding (7) to the electronic composite protection relay (1CI+. (14)
) is the unit that measures, controls, and displays the output of the instrument current transformer (3)) (Auxiliary instrument current transformer to lower the current level when inputting to 11+, (15) is the instrument current transformer (3) )
In order to input the output of
G) connects the control power from the control power bus (8) in the closed panel to the electronic composite protection relay (lO), which is an electronic device, and the measurement/control/display unit l-(Ill), which is an electronic equipment level. This is a DC/DC converter for E-control power supply. Resistor, (18) is V flow device for auxiliary instrument (14)
Convert the current into a voltage element and add a total of υ41 to the control/display unit) (resistance for transmitting to Ill, (19
1 is a resistor for converting the secondary current of the zero-phase current transformer (4) into a voltage element and transmitting it to the electronic composite protection relay (10);
Oka is an electronic composite protection system, digital output and measurement by protection relay operation of ffl IJ 10), 1tilI example,
Display unit (breaker opening/closing control from Ill, remote control)
Converting and amplifying the digital output for 1II switching from the level of a ``dangerous weapon'' to the control level of a closed panel housing device or an external device, or assisting in f conversion in the opposite direction. It's a group of relays. (21) is a group of auxiliary relays)
(3) is the operating output of the electronic duplex insurance relay (10), the control output from the measurement/control/display unit 11+, or the terminal block for drawing the signal from the outside or from the outside. ) takes in the switching contact output of the circuit breaker (2
) is a 1511 lifting unit that collects the opening/closing control circuit of Iy'J. Connection 1 of the connector connecting between V and IJ relay + U + is broken, cause) is the cable of that connector, (25) is the relay auxiliary unit (9) and measurement/control/display unit) (+1
), 126) is the connector connection part on the r-indenter type composite relay tlol side, 1271 is the measurement/control/display unit (the connector connection part on the national side,
+23 is from the control % source bus (8) to the relay auxiliary unit (9
) control '5 wire lead-in wire, 4 is the wiring from the instrument transformer secondary winding (6) to the relay auxiliary unit (9), (3o)
is the instrument transformer '1% H wiring from the tertiary winding (7) to the relay auxiliary unit (9), C31) is a disconnection connecting the circuit breaker (2) and the relay auxiliary unit (9)! 1121 control circuit wiring, (branch) is the wiring connecting between the secondary circuit of the instrument current transformer (3) and the relay auxiliary unit (9), +33) i'1. The wiring that connects the secondary circuit of the zero-phase current transformation diagnosis (4) with the relay auxiliary unit (9), □□□ connects the relay auxiliary unit (9) and the measurement/control/display unit) (Ill) It is a connector cable.

Next, the operation will be explained.

The internal control circuit of the disconnector (2) is connected to the relay auxiliary unit (9) through the kasuri head), and the relay auxiliary unit (9)
) control unit) [it that was consolidated in '2S5! I
Controlled by QJJ circuit. This control unit +2
2) The control source is drawn in by the lead-in line [281, and the digital output signal and measurement control display unit (II) when the electronic composite protection relay (lO) is operated.
The opening/closing control signal for the interconnector (2) is transmitted from the circuit breaker (2), and performs the core function of controlling the circuit breaker (2). Also, circuit breaker (2)
The open/close status signal is transmitted to the measurement/control/display unit (Ill) via this separate unit (t2Z), and a flashing light such as an LED (not shown) is displayed on this unit (11).
is displayed. Instrument transformer? 52nd Gan 129) and 3
The next winding circuit (g)) is connected to a relay auxiliary unit 9) (tessellated), in which its output is connected to an auxiliary instrument transformer +12
1, (+ (branch) means electronic equipment (+01, (1
After reducing the input level to a small value, the electronic composite protection relay (10) or measurement/control/display unit (ll
) to the connector and connector cable (61, C24
1, (2b), t25+.

(Transmitted by a circle, iron. Also, an instrument current transformer (31
The secondary circuit of is connected to the relay auxiliary unit (9) in which its output is connected to the meter auxiliary current transformer (14+, (l
After setting the current level to a small value at the level of electronic equipment using ω, the area of this current level is controlled by the resistor Q71. (+8) converts it into a pressure level and connects it to the IJ pressure level (IJ pressure level) and the measurement/control/display unit (11) to the connector and connector cable (+26),
This is transmitted by one example. The secondary circuit of the zero-phase current transformer (4) is connected to a relay auxiliary unit (9), in which the current level output is converted to a voltage level by a resistor (19) and 'electronic composite protection: I IJ lot to connector and connector cable (5)), shi 4).

(c), (2b), b. Transmitted by threshold. Pull in the control power from the control power bus (8) in the closed switchboard, and connect the OC
/bc converter Q61 controls electronic equipment level @
After converting to subpressure, connect the connector and connector cape/L/tZ3i, (241,
'25), t2B), illusion, +34) led to -
be caught. Digital output of the operation of the relay elements of the 'Ginu Composite Doctor, G IJ Shire lO) or measurement/separate/display unit (when digital output from the Ill is used for external purposes, a group of auxiliary relays 120) can be used for external purposes. The output is wired to the terminal block (21) as a contact output that can be used for.

Ru.

In addition, in the above embodiment, the case where the quick disconnect switch (2) is housed in the closing switchboard has been explained, but instead of the circuit breaker, it may be a switch such as a contactor, a disconnector, or other switch device. , the same effect as the above embodiment is achieved.

〔Effect of the invention〕

As described above, according to the present invention, by providing a relay auxiliary unit in the measurement/control/display circuit of a closed switchboard, conventional control methods other than electronic equipment and electronic equipment level can be controlled.
□The circuit can clearly distinguish both sides of equipment and wiring, parts other than electronic equipment and Nariko equipment can be easily connected with connectors, and this relay auxiliary unit can be used to connect electronic equipment and conventional control circuits other than electronic equipment level. Effective electronic equipment between 1) plays the role of an interface with common parts, greatly contributing to the rational configuration of measurement, control, display circuits and component equipment in closed switchboards, and achieving low cost and crystal reliability. There is an effect that the device of the degree can be obtained.

[Brief explanation of drawings]

FIG. 1 shows the measurement and measurement of a closed switchboard according to an embodiment of the present invention.
A configuration diagram of the control/display circuit and related equipment is shown. Figure 2 shows the measurement, control, and display circuit configuration of a conventional closed switchboard. In the figure, (l) is the main bus bar, (21 is the disconnector, (3)
(4) is the zero-phase current transformer, (5) is the instrument transformer, (81 is the control power bus, (9) is the relay auxiliary unit, (lO) is the electronic composite protection unit, Kou Relay, (Il+ is a measurement/control/display unit, (241, (Incorporated) is a cable. In the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] Regarding the measurement, control, and display circuits of closed switchboards and related equipment, a relay auxiliary unit that has a common interface function between the electronic equipment and electronic equipment level part and the electronic equipment and parts other than the electronic equipment level is installed. A closed switchboard featuring: