JPH0618589A - Short-circuit testing device for electrical power equipment - Google Patents

Abstract

PURPOSE:To reduce the burden of testers and, at the same time, to improve the testing efficiency at the time of performing short-circuit tests on electrical power equipment. CONSTITUTION:A computer section 1 sets and selects test conditions on an interactive basis against a circuit breaker control section 2 having a circuit breaker for constituting connection of a generator which becomes a power source at the time of performing short-circuit tests on power equipment, etc., and test sequence control section 3 having a timer for test sequence. The control of the circuit breaker and setting of the timer are automatically performed in accordance with the test conditions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a short-circuit testing device for power equipment such as circuit breakers, transformers, arresters and switchboards.

[0002]

2. Description of the Related Art Electric power equipment is subjected to a short circuit test as one of performance tests. The short circuit test is performed by imposing a high voltage and a large current as the capacity of electric power equipment increases, and a large capacity and large size of the short circuit generator, reactor and switchgear of the test equipment are used. The test circuit configuration of the test equipment is changed according to the test content.

Conventionally, the following four major operation items are performed by a tester when conducting a test.

(1) Operation of the disconnector for constructing the generator wiring (2) Operation of the disconnector for short-circuiting the current limiting reactor for adjusting the short-circuit current.

(3) Configuration of main circuit disconnector.

(4) Setting of test sequence timer.

The operation / setting in each of the above items is based on the judgment of the tester, and in the items (1) and (2), the remote operation by the push button from the measurement panel, in the item (3), the on-site operation, and (4). In the section, it is done by manual setting on the timer body.

[0008]

The short-circuit test of electric power equipment requires a technician (tester) who has specialized knowledge and experience in carrying out the short-circuit test because of the nature of handling high voltage and large current. In addition, since some of them require manual operation and manual setting, it takes a long time to carry out the test, which deteriorates the test efficiency.

Particularly, in the short circuit test of the electric power equipment as a product, the number of tests and the contents of the test are increased, and the test load is increased.

The object of the present invention is to reduce the burden on the tester,
Another object of the present invention is to provide a short-circuit test device with improved test efficiency.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is intended for interposing a disconnecting switch for connecting a generator as a short-circuit test power source for electric power equipment and a short-circuit current adjusting current limiting reactor. A disconnector control unit for controlling the disconnector for the test main circuit configuration of the disconnector and the power equipment, a test sequence controller having a test sequence timer for sequence-controlling the short-circuit test voltage and current of the power equipment, and the power equipment And a computer unit for controlling each of the disconnecting switches of the disconnecting switch control unit and setting a timer of the test sequence controlling unit in accordance with the selected test condition. And

[0012]

[Operation] Setting of test conditions necessary for short circuit test of electric power equipment,
The selection is executed interactively by a computer, and the disconnector control and the timer setting are automatically performed according to the data that satisfy the test conditions.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention. The computer unit 1 is a personal computer 1
1, a main storage device 12 for storing programs, a hard disk 13 as a database, a keyboard 14, a mouse 15 for inputting and outputting in an interactive manner with a tester,
And a CRT display device 16.

The disconnector control unit 2 controls the disconnector opening and closing for the circuit configuration such as the wiring of the generator which becomes the short-circuit power source of the power equipment to be tested. In this disconnector control unit 2, an I / O unit 21 for inputting / outputting control data from the computer unit 1, a disconnector 22 for connection of a generator, and a current limiting reactor inserted in a test circuit are set. The current limiting reactor configuration disconnector 23 and the test main circuit configuration disconnector 24 of the power device under test are provided.

The test sequence control unit 3 sequence-controls the time of voltage, current, etc. applied to the power device to be tested. The test sequence control unit 3 includes a communication circuit (RS23) for inputting sequence data such as timer time limit setting from the computer unit 1 through the communication circuit 17.
2C) 31, a test sequence control timer 32, and a device control circuit 33 that controls facility devices such as a generator and a power device under test according to a control signal from the timer 32.
With.

In the above-mentioned configuration, the test condition is established by inputting or selecting the test method, the test contents, the rated items of the power device under test, etc. in the main program A of the computer unit 1 in an interactive manner and the required sub Start the program. The established test conditions are stored in the hard disk 13 so that they can be used as a database for the next test condition setting.

A program for controlling each of the disconnectors 22 to 24 of the disconnector controller 2 is prepared in the subprogram. For example, the disconnector control program B for connecting the generator
Controls 15 disconnectors according to the type of test, and switches the generator connection to 4 types (star connection, delta connection, series / parallel connection).

Current limiting reactor disconnector control program C
Controls the disconnecting switch that short-circuits one current-restricting current limiting reactor, and makes it possible to select 256 short-circuit current values depending on the combination.

The disconnector control program D of the main circuit configuration is
In addition to controlling 59 disconnectors and configuring a test circuit,
Performs control for each unit to inspect the operation of the disconnector.

The test sequence control program E is 38
It has a control channel of the channel, and it is made possible to select and set two types of timer setting time limits of 0.1 ms to 1.0 s, 1 ms to 10 s, and the set time is digitally displayed and selected or the keyboard is used. The numerical value is set from 14.

2 and 3 are flow charts for explaining the operation of this embodiment. FIG. 2 shows processing steps S1 to S9 for interlocking the control of the respective disconnectors 22 to 24 of the disconnector control unit 2 and the setting of the timer 32 of the test sequence control unit 3 at the time of starting the test, and processing steps for registering the test conditions. S10 to S13 are shown. In FIG. 3, the disconnectors 22-24 are shown.
The processing steps S14 to S18 for individually setting the control timer 32 are shown.

In FIG. 2, at the time of starting the test, the operator selects whether the operation of the disconnectors 22 to 24 and the setting of the timer 32 should be linked operation or single operation (S).
1) In single operation, move to the flow of FIG. In the case of interlocking, it is selected whether the test condition is registered or the test condition registered in the past is called (S2). Hereinafter, the linked operation, the single operation, and the registration will be described.

(1) Interlocking operation In S3, the operator inputs and selects the test method, the test contents, and the rated items of the circuit breaker, and the process proceeds to S4.

In S4, the computer determines whether the selected test item is registered. If registered, the process returns to S5, and if not registered, the process returns to S1.

In step S5, the disconnectors 22, 23, 24 are read from the memory.
Search the operating conditions of and the setting conditions of the timer 32, and S6, S
7, S8, and S9 are sequentially performed.

In S6 to S9, the operation of the disconnectors 22, 23 and 24 and the setting of the timer 32 are performed, and the interlocking operation is completed. After the completion, the process shifts to S14 of single operation.

(2) Single unit operation When the operation is shifted from S1, the operation is shifted to S14, and after completion of the interlocking operation, the operation is shifted to S18.

S14 is S15, S16, S17, S1.
8, a transition selection menu to S1.

The arrows in the figure indicate S14, S15, S1.
6, S17 and S18 are shown.

(3) Registration From S2, the operating conditions of the disconnectors 22, 23, 24 and the set value of the timer 32 can be registered in the hard disk 13. S1
In 0 and 11, the operator inputs the rating items of the test items (test method, test contents, circuit breaker) that the operator wants to register, and S12 is entered.
Move to.

In S12, the operating conditions of the disconnectors 22, 23, 24 and the setting conditions of the timer 32 are registered in the hard disk 13, and the process proceeds to S13.

At S13, it is selected whether or not the system is completed. If not, the process proceeds to S1. The states of the disconnectors 22 to 24 are displayed in color graphic on the CRT display device 16, and an alarm is output from the sense signal from the device control circuit 33 when malfunction occurs. All operations are performed using the keyboard and mouse.

[0033]

As described above, according to the present invention, the test condition of the electric power equipment is interactively set and selected, and the disconnector such as the generator connection is controlled according to the test condition and the test sequence is used. Since the timer is set automatically, the test conditions can be established and the test circuit configuration can be ensured and facilitated due to the difference in the test method, test contents, rating items, etc. of the power equipment, and the burden on the tester can be reduced and the test can be performed. It has the effect of improving efficiency.

[Brief description of drawings]

FIG. 1 is a device configuration diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart of linked operation / registration in the embodiment.

FIG. 3 is a flowchart of a single operation in the embodiment.

[Explanation of symbols]

1 ... Computer part, 2 ... Disconnector control part, 3 ... Test sequence control part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuji Onomoto 2-1-117 Osaki, Shinagawa-ku, Tokyo Inside the Meidensha Co., Ltd.

Claims (2)

[Claims] 1. A disconnection switch for connecting a generator of a short-circuit test power source of a power device, a disconnecting switch for inserting a short-circuit current adjusting current limiting reactor, and a disconnecting switch for a test main circuit of a power device are controlled. A disconnector control unit, a test sequence control unit having a test sequence timer for sequence control of short-circuit test voltage and current of power equipment, and a test condition of power equipment are interactively set and selected according to the test conditions. And a computer unit that controls each disconnector of the disconnector controller and sets a timer of the test sequence controller. 2. The electric power according to claim 1, wherein the computer section is provided with a database for accumulating test condition data and using the data for the next setting and selection of test conditions. Equipment short-circuit test equipment.