JPS59125454A - On-line testing system of dual computer system - Google Patents

Abstract

PURPOSE:To perform high-speed protection control over an electric power system by releasing an operation test state during an operation test. CONSTITUTION:A CPU1 and a CPU2 while protecting an activity state as a dual system transmit a signal for the operation start of a relay in combination with a bit format for transmitting another control signal. Then, the control signal of an auxiliary relay X is turned off to send the control signal of a relay Z. When the relay Z is energized, a contact Z1 is made and its operation is transmitted by transmitters DT22S and DT22R to the CPUs 1 and 2 through a (b) contact Y1b and a (c) contact Y1c to test the operation as one system. Then, the control signal of a relay XY is sent out similarly with the transmission of the control signal of the relay Z. The relay XY releases the auxiliary relay X from holding itself, and its operation is transmitted to the CPUs 1 and 2 through both transmission systems by the closure of a contact XY1, thereby confirming that the auxiliary relay X is reset.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an online test method for a dual computer system, and particularly to an online test method for a dual computer system that performs high-speed protection control of an electric power system.

In order to ensure stable operation of power systems, it is necessary to take appropriate countermeasures before local failures spread throughout the area. If this is neglected, there is a risk that, in extreme cases, a major accident could occur, equivalent to the shutdown of the entire system. The risk is relatively small if there is a margin in the system, but the risk increases especially if the margin is small. There are various states in the power system, but for example, the response time to a failure is 16 to 18 hours.
In some cases, it is about z. In the event that an important trunk line or large power source in the system is disconnected, if appropriate treatment is not taken within the above-mentioned time, there is a possibility that the entire system will collapse together. Therefore, when a local failure occurs in the system, it is necessary to quickly determine the abnormality and take countermeasures quickly.

However, the power system spans a wide area, and it is extremely difficult to take local countermeasures, so countermeasures must be applied to the entire area using a system that reduces the entire system by 1υL.

That is, it is necessary to use a high-speed transmission device to transmit system abnormalities to a device that monitors the entire system, to quickly make decisions, and to quickly deliver the results to the terminals.

9600-48000 bit/s for this kind of system
Information transmission speeds faster than the conventional 120
The transmission speed is 8 to 16 times higher than that of a system having a transmission speed of about 0 bit/s. However, the area targeted for treatment is generally the most important area of the system, and incorrect operation could cause an extremely dangerous situation.

Therefore, a system is constructed by arranging two identical devices in rows, and in some cases, the necessary parts of both systems are operated in synchronization.
A possible method is to perform the logical product of both systems and output the result. Furthermore, in this method, if one of the systems fails, it is preferable to perform processing using the output of only the other system, taking into account the extremely short response time mentioned above. be.

The present invention has been made in view of the above, and an object thereof is to provide an online test method for a dual meter system that can perform high-speed protection control of an electric power system.

In order to achieve such an object, the present invention provides a first transmission means for transmitting information generated by a terminal device, and a first transmission means for processing the information transmitted by the first transmission means to generate control information corresponding to the information. Two systems are provided in parallel, each consisting of a computer and a second transmission means for transmitting control information to terminal equipment, and the second transmission means of the two systems each transmit control signals and control information for the terminal equipment. a control means for controlling a terminal device using control conditions; a test means for placing one of the two systems in an operation test state and transmitting test start information to execute an operation test; It is equipped with a control return means for canceling the state and returning to the control state by sending control return information, and when performing an operation test of two systems, it sends test start information to either system and returns the other system to the control state. The system is placed in an operation test state, and the response to the test start information of one system in the operation test state is sent back to the other system in the control state to determine whether there is an abnormality in the one system in the operation test state. Sends control return information to the other system to return it to the control state, and sends test start information to the other system to place the other system in the operation test state, and controls the terminal equipment during the operation test. The present invention is characterized in that, if necessary, the operation test state is canceled and the terminal equipment is controlled.

FIG. 1 shows an example of the configuration of an information transmission processing system according to the method of the present invention. Here, the CPUI and the CPU 2 receive information from the terminal, perform 9M analysis and processing of various information, and send some of the results to the terminal, as well as based on the activation request from the operator and each 4jli W request. performs various simulation operations, memory corrections, dumps, etc.

DT12S and DTI2R and DT22S and DT2
2R means that the terminal information is transferred to CPU l and CPU2, respectively.
This is a transmission device that transmits data to two lines of the same device. Here, S indicates a transmitting end, and R indicates a receiving end. []T
ll5 and mouth TIIR and DT21S and DT21R
are devices that transmit the output from CPU 1 and CPU 2 to the terminal, and these are also 6 transmission devices in which two lines of the same device are arranged in parallel: The input signal to DT12S and DT22S is a system fluctuation detection signal, and an interrupter. It is a trip or operation relay, etc., and various terminals are connected to both devices. Transmission equipment DT12S and I]T22S
The signals transmitted from the transmission equipment DT12S and DT22R, respectively, are in the form of a set of multiple signals in which each bit has a meaning, and bits for verification are added.
Send to.

The information output by the transmission device DT12R is transmitted to GP[Jl and CPIJ via signal lines +2a and 12b, respectively.
2 in parallel, and the output of the transmission device DT22R is supplied to the CPUI and CPt1 via signal lines 22a and 22b.
2 in parallel. Further, the information outputted by the CPU is supplied to the transmission devices DTIIS and DT21S via signal lines 11a and llb, respectively, and the CPU2
The information outputted by is transmitted through signal lines 21a and 21b,
They are supplied to the transmission devices DTIIS and T)T21S, respectively.

The information taken in from the transmission equipment of the two series is transmitted to each C
After processing such as collation and selection is performed in the PU,
After being subjected to applied processing such as analysis, it is guided to the transmission devices DTIIS and DT21S.

The outputs of the transmission devices DT, 11R, and DT21R are guided to the field control device 10 and used as a command signal for a trip coil of a breaker, a load increase in an emergency, or a load range. The field control device 10 includes transmission devices DTIIR and DT2.
If both 1Rs are normal, the outputs of both are used, and if one is abnormal, the output of the other normal side is used to detect abnormal conditions in the system that can be detected in the output and the control target. It is considered that the actual output is generated by ANDing with the signal.

Note that it is preferable that the transmission devices DTIIR, DT21R, DT12S, and DT22S and the field control device 10 are installed at the same location.

Furthermore, in view of the high reliability required for the system, the signals sent from the transmission devices DTIIS and DT21S do not use one bit directly for control output, but rather combine multiple bits and use the bit for verification. The transmission equipment WDT11R and DT21R can be verified as a signal group with the added. Also, if you combine multiple people,
This is preferable because the signal group can transmit a plurality of pieces of information in excess of the number of bits associated with the combination.

Transmission device DT12 connected to CPUI and CPU2
S.

The DT12R, DT22S, and DT22R send information such as the abnormal state of the device to their respective CPU1 and CPU2, and the CPU1 and CPU2 grasp the operating status of the device and, based on that information, are configured as a dual system. handles information on both transmission devices. And C
Even if one of the systems is abnormal, the PU 1 and the CPU 2 use the transmission device of the normal system to determine whether or not to use the system multiple times.

In addition, abnormal conditions may be expressed in information that is sent and received, but in that case, the CPU and l
1: The transmission device and information source to be processed by the Pt12 are selected based on the information expressing the abnormality.

Further, the abnormality information transmitted by the transmission devices DTIIR and DT21R is determined in the field control device 10 and transmitted via the transmission devices DT12S and DT22S, respectively.

It is transmitted to CPU t and CPU2 to perform the above-described processing.

In such systems CPUUI and CPU 2
unless processing request information is received from each terminal.

No specific control information is sent. On the other hand, when information to be processed is sent, it is necessary to analyze the information and then quickly send the results to the terminal as necessary.

Various measures have been taken to ensure stable operation of the power system, and in the event of a failure, the faulty part is quickly removed and the normal part continues to operate. However, in the unlikely event that the system shown in Figure 1, which was installed to further stabilize grid operation, malfunctions and causes disturbance to a normal grid, it will not be able to achieve its intended purpose. Not only is this impossible to achieve, but it may even cause problems for the stable operation of the grid. Therefore, in order to eliminate such concerns, it goes without saying that strict consideration must be given to the installation configuration, component selection, and operation methods, but due to the nature of the system, operations involving the entire system occur frequently. This is rare, and it is difficult to constantly judge whether the entire device is being maintained normally.

Therefore, it is important to constantly monitor whether the system operates normally when it should actually operate, that is, to conduct tests within the range of actual operation. In particular, transmission devices are expected to have high transmission speeds, and terminal devices that receive and pass information to each terminal device based on the results are also required to respond quickly. Electrostatic and electromagnetic noise shall not disturb the normal operation of the equipment or cause partial failure. For this reason, it is necessary to be able to test system operability using the entire system, that is, within the range of actual operation.

FIG. 2 shows an example of the configuration of an operation test system related to the online test method in the computer dual system system of the present invention,
vinegar. Here, X and Y are auxiliary relays, xl and x2 are the contacts of auxiliary relay X, Yl and Y2 are the m points of auxiliary relay y, XIC: , X2C, YIC: and Y
2O are contacts XI, X2. Yll Yobi Y2
C contacts, Xla, X2a, Yla and Y2a are contacts XI, X2., respectively. Y1. ? l, F hiY2noa
Contact points, Xlb, X2b, Ylb. This is the b contact between Y1 and Y2.

xO and YO are contacts used for the self-holding circuit, respectively;
x3 and Y3 are contacts that switch the output circuit and form an operating circuit for relay Z. Note that relay Z receives the actual output during the test.

XY is a relay that operates contact XYO to release the self-holding of auxiliary relay X or Y. A is the contact of a relay (not shown) that is activated when information is actually being supplied to the transmission devices DT12S and DT22S.

In the system shown in the second diagram, 4
It is necessary to plan the i number and the number of signals for transmitting status information, including the signals described below, but since only the minimum necessary signals are used, these signals do not meet the purpose of high-speed transmission. However, the present system has enough room to accommodate the number of such signals.

The test operation using this system is described below.

When a test start command is supplied from the input device to a system including CP old and C:PU2, if both systems are normal, CPUI and CPU2 will operate as a dual system. While holding it, first turn on the relay
The operation start signal is transmitted in combination with a bit format for transmitting other control signals. The signal is verified by the field controller 10, and if normal, the auxiliary relay
Excite. When the auxiliary relay DT via Xlc
Supplied to 12S, Sarani, DT12R L Te CPU
1t-3 and CPU2 and 1 are combined.

Since the CPU1 and CPU2 are currently undergoing testing, the function of control signal transmission as a dual system has been verified by obtaining input from the transmission device DT12R, and both systems including the transmission device have been verified. It is also possible to know the transmission time of the system, and it is also possible to obtain information for determining whether there is a special abnormality in the entire system. Furthermore, if an abnormality is transmitted from any of the devices at this time, the abnormality of the device can be known.

Then, the control signal for auxiliary relay X is deenergized and the control signal for relay Z is sent. At this time, since the auxiliary relay × is self-holding, the transmission equipment? Information is transmitted via tDT21S and DT21R, and relay Z is energized based on the judgment of field control device 10. When relay Z operates, contact 2
The transmission device DT22S operates via the B contact Ylb and the C contact Ylc.

1 is transmitted to CPU1 and CPU2 by DT22R.
Operation as a single system is verified.

Next, the control signal for relay XY is sent out via the transmission devices DT2 Is and DT21R in the same way as in the case of sending out the control signal for relay Z. Relay XY releases the self-holding of auxiliary relay X, and its operation is as follows by closing contact XYI.
The signal is transmitted to the old CP and the CPU 2 via the image transmission system, respectively, and the return of the auxiliary relay X is confirmed. In this process, the input to the field control device 10 will be given from two systems, but for example, by returning to the circuit that receives re-input by auxiliary relay x8 and Y return, relay XY
operation is guaranteed by the field control device 10.

Subsequently, relay XY is stopped and a signal for controlling auxiliary relay Y is transmitted.

Thereafter, as in the case after transmitting the control signal to the auxiliary relay
Information that the switching has been performed is transmitted to CPU1 and CPU2 via R, and an operating circuit for relay Z is formed, and the circuits of transmission devices DT21S and DT2JR are opened. Therefore, the signal to relay Z is transmitted to transmission device D.
The information is transmitted to the field control device IO via TIIS and 0-11R, and relay Z operates, and the operation information is transmitted to CPH via transmission devices DT12S and DT12R. When the command to relay Z is completed, the control signal for relay XY is transmitted via the transmission devices DTIIS and DT 11R, and the self-holding of auxiliary relay Y is released.
The operation of contacts XYI is transmitted to CP via the image transmission system.
H and CPU2.

At the time of this final operation check, the operation check test of the system ends. The quality of the test results can be determined by determining the transmission of each control signal and the time it takes for the response to reach the CPUI and C;PLI2. Note that, as described above, processing of abnormal signals transmitted by the device itself is also used.

Furthermore, if a situation that requires the original operation occurs during the test, a signal to detect this causes contact A to operate and auxiliary relays X and Y to return to normal operation. At this time, if a signal is being sent to relay Z, a malfunction is expected to occur, so an interlock related to the operation of contact A is provided. That is, contact A
When the input that causes the operation reaches the CPUI and CPU2, control is performed to restore the relay Z, but by the time the signal reaches the field control device 10, the contact
, A may de-energize the signal to relay Z, so that its operation is faster than the return of auxiliary relays X or Y.

The test operations are summarized in Table 1.

Here, the I system and the π system refer to the system including the CPH in the upper part of the drawing and the system including the CPU 2 in the lower part of the drawing in FIGS. 1 and 2, respectively, and both systems refer to the entire system. show.

As explained above, according to the present invention, it is possible to check the operation of all operational states including the duplex transmission equipment simply by instructing the CPH to start a test. In addition, there is no need to stop the entire system to perform the work, and each joint 7t shown in the second diagram! By making the unit and its circuit stationary, it can be used even during high-frequency operation.
Since it can withstand a large amount of time, it is possible to check the performance of the entire system as needed, making it possible to grasp the status in detail.

In addition, in the above operation explanation, CPUI and CPH
Regarding 2, we assume that both are normal, but as shown in Figures 1 and 2, the information transmission equipment? Since the configuration is symmetrical to that of CPU 6, even if there is an abnormality in either cpul or CPU2, the other CPt1 will also operate, so the above-mentioned operation will not be hindered.

Furthermore, although the present invention has been described as a system that combines an information transmission device and a calculator, if there is no information transmission device, the above-mentioned information transmission device can be used as a process input/output device PI1021. PI10+1 and process input/output device PI1012. A system configured by replacing with PI1022, and as shown in FIG.

Of course, the present invention can also be applied to a system in which the CPU is a single unit and the information transmission device or process input/output device is a dual system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the configuration of an information transmission processing system according to the method of the present invention, FIG. 2 is a diagram showing an example of the configuration of an operation test system according to the method of the present invention, and FIGS. 3 and 4 are , respectively, are diagrams showing other embodiments of the method of the present invention. 1.2...CPU, DTIIS, DTIIR, DT12S, DT12
R, DT21S, DT21R. DT22S, DT22R...transmission device, 11a, ll
b, 12a, +2b, 21a, 21b, 22a, 22b
... Izumi I word -, 1O...on-site control device, X, Y...auxiliary relay, xy, z...relay, XI, X2. X3. YO, Yl, Y2. Y3, 2+, X
YO, XYI =... Contact, Xla, XLb, Xlc,
X2a, X2b, X2c, Yla, Ylb, Ylc, Y
2a. Y2b, Y2c...Contact terminals. Plloll, Pr6O11, Pr6O11, Pr1
O22...Process input/output device.

Claims (1)

[Claims] A first transmission means for transmitting information generated by a terminal device;
A system comprising a computer that processes the information transmitted by the first transmission means and generates control information corresponding to the information, and a second transmission means that transmits the control information to the terminal device. comprising two systems in parallel, further comprising: a control means for controlling the terminal device using the control signal transmitted by the second transmission means of the two systems and a control condition of the terminal device; testing means for placing one of the systems in an operational test state and transmitting test start information for executing an operational test; and a control return for canceling the operational test state and returning to a control state for transmitting the control return information. When performing an operation test of the two systems, the test start information is sent to one of the systems to place the one system in an operation test state, and the other system in the operation test state During the test, a response to the start information is sent back to the other system in the control state to determine whether there is an abnormality in the one system in the operation test state, and the control return information is sent to the other system. and returns to the control state, and sends the test start information to the other system to place the other system in the operation test state, and controls the terminal device during the operation test. 1. An online test method for a dual-computer system, characterized in that when a need arises, the operation test state is canceled and the terminal device is controlled.