JPS58141622A - Device for inspecting protecting relay - 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] Description of the technical field This invention Fy3 Hiro, system safety relay 4: Maintenance relay automatic inspection device that automatically inspects a number of installed safety relays using a calculation tin salt device・Explanation of the conventional technique This automatic inspection of the gutter using the automatic point m * 6 yu of malt is carried out in the order of 9 as shown in the fifth principle. ・In other words,
First, when the conditions for automatic inspection are satisfied, an inspection-start command is generated (step l), and the command fblJ is output from the body layer relay.
Step 2) Step 2) Step 2) Step 2) Step 2) Step 2) Step 2) Step 2) Step 2) Step 2) Step 2) to perform the trip to the IIIi pottery (hereinafter) rcPtyJ
The operating status of the ONil relay is input to CPt1, and it is determined whether the operating status of the 119 relay is 1 rich or not (Step 3). 4) If the result of 04111 is 1gutomi, it will give a visual report and display an abnormality, and also issue Jl11 JOGEN dog processing (Step 9) If the result of O judgment is normal, an inspection command will be issued from the CPU. Turn off the output l.Step 5) Determine whether the safety relay returns or is normal.(Step 6)a [If the return is abnormal, display the II axis and abnormality display, and perform Ji4 constant removal. (Step 9) o If the determination result in Step 6 is normal, release the link of the trip signal to the controlled iittsm* output from the protection relay.Step 7)
Determine whether the inspection of the 11M9 relay has been completed (step 8). If the inspection has not been completed, proceed to the inspection of the next protection relay (Step 1O), and repeat each of the above steps 2 to 8. One reply. If the determination result in step 8 is that the inspection has been completed, the series of inspections has been completed (
Step 11) It happens.

(For this type of automatic inspection using an iPU, a conventional trip lock circuit is shown in FIG. 2, and the conventional enclosure will be described in detail below with reference to the I!cl direction.

When a trip lock signal is output from terminal 22 of 0PU 200, auxiliary relay 210 is energized.

The amplification contact 211 of this auxiliary relay 210 provides a trip signal to the controlled i11 aircraft 9270, as shown in FIG. 1bl! It is connected in one row to the operation contact 262 of the protection relay, and is tripped (No. At point 261, the inspection operation signal is input to the 21st terminal of 0P0200.In this case, if the operation is abnormal based on the above operation notes, the protective relay abnormality signal V is output from the 23rd terminal of 0PU200, and the auxiliary The auxiliary relay 220 is self-maintained by its amplification contact 221,
Furthermore, the amplification contact 222 shown in FIG. 211 outputs an abnormality signal from the second control unit 2804 to issue a % alarm and display an abnormality. The above body layer abnormal reconnaissance is
It is held until the I9 normal display return push button switch 250 is pressed. Also, when the 0PU200 indicates that the 41II# relay is operating normally and the I & weir is completed, the 111!
! When the output of the J-ray signal is completed, the trip lock signal output from the terminal 22 of the 0PU20G is turned off, the trip lock is removed, and the next protective relay is inspected.

However, such a conventional trip lock circuit can only be controlled by -1m! Q) Auxiliary relay No. 210 is used to lock the trip of 1. Since I always use a 5trib magnetic type auxiliary relay, I return it as soon as the inspection is completed. Therefore, depending on the timing of each output from the CPU 200, the lock contact 211 closes before the operating contact 262 of the protection relay, which was in the ON state due to the signal 11j from the CPU 200, finishes opening. Return, controlled i
1 plane! ! ! There is a risk that a trip signal will be applied to 270 and this V will be accidentally cut off. In addition, if the error occurs, the output of 0PU200 is turned off for the same reason as described above.Since it is necessary to use a device that takes longer to recover than between VI's, check the operation of Sleeve HIJ9 relay 210. C at home! If you use PU200, it will be difficult to open during inspection.Furthermore, this auxiliary relay 210 will return to its original state after inspection is completed, regardless of whether there is an abnormality in the maintenance relay. If there is an abnormality in the wk relay that causes a false trip signal, the inspection is complete and the joint m111i! 1ThJIII! will give a trip signal. Regarding this point, the conventional approach was as follows: In other words, the Sosuke Shire 210 is only for locking the output of the protection relay in response to the inspection signal (servo fold input interrogation) during inspection, and the inspection is completed. Controlled by the later abnormal '01 order &lI! Erroneous output 1 to the I device is 51! by another means! l
He said the condition was good. However, in this idea, many dampers are used as an interlock against erroneous output, resulting in a configuration of 1111Is.

In addition, even if the abnormality display is not resolved due to an abnormality in the protective relay, the abnormality display vIi will disappear by operating the return button switch 250 to release the self-holding of the relay 220.For this reason, the memory koji production using a printer etc. This also makes the cost of the equipment less enjoyable, and it also becomes inaccurate to judge whether the current maintenance relay's foreshadowing is normal or not. The protection relay prevents incorrect commands to the AK device due to timing deviations during termination or disconnection, and in the event of an abnormality, the output is locked and the IK wealth display V^ normal abnormality is removed. A strain that can be maintained in a manner that makes it possible to maintain the yarn in a stable manner.
Our goal is to provide you with the best noodles at I9 Leh.

(Construction of the Invention) This will be explained with reference to an embodiment shown in the third factor of the structure V of this invention. Note that parts corresponding to the first factor are given the same reference numerals. In FIG. 3, cpυZOO executes an inspection of a protection relay (not shown) in response to an inspection command (not shown) from outside the island. Here, this inspection means giving an inspection signal (bond input force) to the corresponding protection relay, and
! The operating status signal is sent to terminal 2 by the contact 261 of the L relay.
1 and compares it with the inspection program to determine whether there is any abnormality cn% of the relay. Terminal 31 is energized by the addition of the CPU 2004 second inspection command, which causes a one-shot pulse. Terminal 23 is in the inspection area: 4 with an abnormality! It is energized by llllFr. A terminal 33 inputs a book inspection command to the oPU 200. A terminal 310 is a keep relay for locking the output of a protection relay, and its set side 311 is connected to a terminal 314.

1 error display relay 22017 on the home set side 312)
It is connected to the terminal 32 via the Th contact 23. The above-mentioned abnormality display relay 220 connects the terminal 23 to the terminal 23, and also connects the contact 221 of its own contact 221% to the b contact 251 of the switch 250 via the power supply 11201c via T142, thereby establishing a self-holding path. ◎ The 11 devices 270 to be tripped by the circuit breaker installed in the system receive a trip command from the operating contact 262 of the protective relay, but the b of key 7-310 of iiJ is used for locking during inspection.
A contact point 313 is provided. This 'b contact 313 is opened when the set 411i1311 of the Maro-prelay 310 is forced to W#, and even if the W# force of the set 6311 is released, the contact 313 remains in this state for about 1 mvm. (Reset) II
Due to the activation of 312, delivery letter koji 1: Returns 0
Abnormal 411all! 280, has a 1-knee abnormality indicator similar to the tll quantity, and 1 of the abnormality display relay 222.
201, 202, 203, and 204 in g1 are connected in series, and are heat resistant during their on operation. When an inspection command is added, one signal is output from terminal 31 (pulse 11).
When a signal occurs, the set side vgI of the keep 9 relay 310 is activated, and its b contact 313 is activated. After that, the protection relay is inspected as described above, and if the protection relay is not present, a pulse signal is output from the terminal 32.

At this time, the inspection No. 11 ha-2 from 0PU200 to the protection relay was missing, and the contacts 261 and 2 of the protection relay were missing.
Both 62 are in steady state @l! I'm going home. The keep relay 310 is reset from the coefficient a from the terminal 32 @312
is energized, assists the b contact 31B, and releases the output lock of the protection relay. In this way, the output lock is released after the contact 262 of the protection relay completely returns to the normal state of the door, so that the 4J1 1111a device 270 will not malfunction due to the protection relay output during inspection. In addition, the above output lock based on the point 3136 of the keep relay is maintained even if 11 seconds occur, so even if the return of the output a1 of 0PU2QQ is delayed as in the conventional case,
llm-does not give any effect to the small device 270 @ On the other hand, if the 1st period inspection indicates that there is an abnormality, the relay 22 for abnormality display is activated by the output from the terminal 23.
0 is excited and self-holds ◎ and its al1 point 222
close and operate the abnormal ff1jllllk device 280,
When the abnormality display section is touched, the b contact 223 is turned on to lock the energization path of the reset 312 of the keep relay 310. Therefore, the b contact 313 of the keep relay 310 will not return to closed state, and the output lock will not be released when the 1IIllkv level is abnormal. Therefore, an erroneous trip signal from a protection relay will not cause the wLI 141-equipment to interrupt operation.

Based on the above abnormality display, the maintenance personnel understands the abnormality of the protection relay, and II! Perform buried or replacement maintenance t'. After this nursery, in order to cause the 1st relay to recover, perform the regular recovery process I6 as shown in the flowchart of Figure 4. 3 m 1
switch 2501' shown in ml step 42
), the wrinkle point zsit'ms% abnormality display relay 22
When the self-holding of 0 is released, the tortoise contact 252 is
When the judgment output of #lJetomi is received for the JISOCJPU200g2, a &2^ inspection command is given (step 43). For this reason, 0PtJ200 is used for nose 1 inspection operation (
Steps 3 to 6 (same as in FIG. 1) are executed to check whether there is any abnormality in the 4JIA#1 relay after maintenance.

Here, if the 18IJ period maintenance is not appropriate due to a repair error or a defective conversion part, and the abnormality continues, this abnormality will be detected in step 4 or step 6, and an output will be generated from the terminal 23 again. The abnormality display relay 220 is operated and the self-holding function is set to normal display Vrr. Therefore, even if you operate the switch 250 to reset the excitement display, the excitement display will be activated as long as there is an abnormality in the protection relay. Therefore, the front surface will not disappear. Therefore, it is possible to determine whether or not there is an abnormality in the protection relay at this time.

On the other hand, if the protective relay is normal after maintenance, terminal 3
Output occurs from 2, *-7') V-3101t! Operate one set, and change the b contact, 313, to the corresponding hook-1! ! Trip lock 1 to 270
Step 7) except for t1s, check the coughing wrinkle protection relay M4oKi: All 1111! J Ray-1nfiL point 5
Step 40 to judge whether it is completed or not, and if not, proceed to the next maintenance relay 1 snap step 45
), the inspection operation (steps 3 to 7) is completed, and once all the relays have been inspected, the abnormality recovery operation is terminated (step 46).

Further, the b11 point 223 of the excitement display relay 220 is %
Each reset 3124 of the keep relay 31O provided for each maintenance relay is provided, or the PU200 is connected to the terminal 32 via the common mother @ 1306 *sit,
“Therefore, the output terminal of cpu20G will not be increased.

Overall effect As mentioned above, this is the first @1; when the automatic inspection returns, the first and last 11119 races are completed.
It has various effects, such as being able to carry out the actual development of a single device, and also to inspect it, so that it can be published in a 5-day manner. .

[Brief explanation of drawings]

Figure 1 is a flowchart showing the work flow of automatic inspection of %111119, $2 H1ml, (bl is conventional trip lock-Jl111v rs, 'is s
ajaj, 1) I shows six examples of the maintenance relay inspection device according to the present invention. It is an arrow chart showing. 201, 202% 203.204... IIl 祢t#
-1200...Performance IILl&Image device, 21.23.31,32.33-...Arithmetic processing jiliH
L20017) Input/output terminal, 220-・Relay for displaying your book, 221, 222.223-9 v -220 no increase @mA
,゛250...Abnormal push button switch, 261,
262...Maintenance relay operation contact, 270...Value W device, 280...14 Constant touch device, 310...
・Keep relay, 311...Keep relay set-
312...Keep relay reset-1313...
Keep Relay Increased Points. (7317) Agent: Nori Chika Oboro (and 1 other person) Figure 1 Figure 2 (α) Figure 3 Figure 4

Claims (1)

[Claims] 4: Input the operation status MJiti and check the status of the maintenance relay using a predetermined inspection program. 6; Configured points &
In the Mk, an inspection command is added to the output IN ground device (inspection command for - sound output is added, and the set side is energized from the second, locking the output of the 14-fold relay, and the arithmetic processing unit is working). Judgment output ζ that there is no abnormality; keep relay that is energized from the reset side and releases the output lock of the above-mentioned protection relay, and 1. energized by the judgment output that there is wealth by the arithmetic processing gAl and self-maintains. The current collection display relay operates the normal display and locks the auxiliary 1! I6 on the reset side of the period keep relay, and the self-holding of this normal display relay is released and the operation mode is activated. Inspection 1i of the Hokasumi relay with a switch that gives the first order of inspection after cutting it into noodles.