CN110289684A - Automatic restart control device and method of a microcomputer device - Google Patents

Abstract

The present application relates to an automatic restart control device and method of a microcomputer device. The automatic restart control device includes a double-coil magnetic latching relay, and the double-coil magnetic latching relay includes a restart coil, a reset coil, and a first normally closed contact and the second normally closed contact, the reset coil and the reset coil are connected to the control output end of the microcomputer device through their respective control loops, and the first normally closed contact is connected in series in the power circuit of the microcomputer device, so The second normally closed contact is connected in series in the control loop of the restart coil, and the second normally closed contact is a power-off holding contact. The application can realize the automatic restart of the microcomputer device, save manpower and material resources, improve work efficiency, and solve the current problem that the restart of the microcomputer device requires manual on-site operation and low work efficiency.

Description

Automatic restart control device and method of a microcomputer device

technical field

The application belongs to the technical field of relay protection, and in particular relates to an automatic restart control device and method of a microcomputer device.

Background technique

At present, the relay protection device of the substation has been fully computerized, that is, computer protection. During the operation of the relay protection device, some disturbances or environmental factors may cause abnormal phenomena of the relay protection device, such as: device abnormality, device alarm, SV signal disconnection, GOOSE signal disconnection, etc. These abnormal phenomena may lead to protection blocking and make the substation lose protection, which must be dealt with in time. However, many years of operating experience have shown that most of these abnormal phenomena disappear after the device is powered off and restarted, that is, the device can return to normal by restarting the relay protection device.

At present, most substations are located in remote locations, and a large number of substations have been unattended. After the relay protection device is abnormal, the staff needs to drive dozens or even hundreds of kilometers to the substation to restart the device. Such a Simple operation wastes a lot of manpower and material resources.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automatic restart control device and method for a microcomputer device in order to solve the problems of waste of manpower and material resources and low work efficiency in the prior art when the microcomputer device is powered off and restarted.

The technical solution adopted by the present invention to solve the technical problem is: an automatic restart control device for a microcomputer device, including a double-coil magnetic latching relay, and the double-coil magnetic latching relay includes a restart coil, a reset coil, and a second A normally closed contact and a second normally closed contact, the reset coil and the reset coil are connected to the control output end of the microcomputer device through their respective control circuits, and the first normally closed contact is connected in series to the power circuit of the microcomputer device Wherein, the second normally closed contact is connected in series in the control circuit of the restart coil, and the second normally closed contact is a power-off holding contact;

When the control output terminal of the microcomputer device sends a restart trigger signal, the restart coil is triggered to be energized, the first normally closed contact and the second normally closed contact are disconnected, the microcomputer device is powered off, and the restart coil is powered off at the same time, the first normally closed The contact immediately returns to the normally closed state, and the microcomputer device continues to work;

Since the second normally closed contact has a power-off hold function, it remains normally open until the control output terminal of the microcomputer device sends a reset trigger signal, triggering the reset coil to be energized, and the second normally closed contact returns to the normally closed state.

Further, according to the automatic restart control device provided in the present application, the first normally closed contact is connected to the power terminal of the microcomputer device through a power plug-in.

Further, according to the automatic restart control device provided in the present application, the microcomputer device includes a CPU, and the restart coil and the reset coil are connected to the signal output terminals of the CPU of the microcomputer device through respective control loops.

Further, according to the automatic restart control device provided in the present application, the restart trigger signal includes an in-situ restart trigger signal sent by the microcomputer device due to its own abnormality, and a remote restart trigger signal sent by the operation and maintenance personnel, wherein the remote restart trigger signal The operation and maintenance personnel send it to the CPU of the microcomputer device through the monitoring computer in the monitoring room, and the trigger is controlled by the CPU; the on-site restart trigger signal is controlled and triggered by the CPU according to the detected abnormal signal of the device itself.

Further, according to the automatic restart control device provided in the present application, the reset trigger signal includes an in-situ reset trigger signal and a remote reset trigger signal, and the in-situ reset trigger signal is realized by a button switch installed on a microcomputer device, so The remote reset trigger signal is sent to the CPU of the microcomputer device by the operation and maintenance personnel through the monitoring computer in the monitoring room, and the trigger is controlled by the CPU.

The present invention further provides an automatic restart control method, characterized in that the automatic restart control method includes the following steps:

(1) When the microcomputer device is abnormal and needs to be restarted, the control output terminal of the microcomputer device sends a restart trigger signal, which triggers the restart coil to be energized, and then the first normally closed contact and the second normally closed contact are disconnected;

(2) After the first normally closed contact is disconnected, the microcomputer device is powered off; after the second normally closed contact is disconnected, the control circuit of the restart coil is disconnected, and the restart coil is powered off and reset;

(3) The power-off of the restart coil makes the first normally closed contact reset, and the microcomputer device restores the power supply to realize the restart of the microcomputer device;

(4) After the microcomputer device is restarted, the second normally closed contact remains disconnected, only when the control output terminal of the microcomputer device sends a reset trigger signal, the reset coil is energized, and the second normally closed contact is reset.

Further, in step (4), after the microcomputer device is restarted, if the abnormal state is still not resolved, it is determined that there is a major fault and manual processing is required, and after the manual processing is completed, a reset is triggered; if the microcomputer device is restarted, the abnormal state is resolved , then trigger reset directly.

Further, the restart trigger signal includes the local restart trigger signal sent by the microcomputer device due to its own abnormality and the remote restart trigger signal sent by the operation and maintenance personnel.

Further, the reset trigger signal includes a local reset trigger signal and a remote reset trigger signal.

The beneficial effects of the present invention are: the present invention can realize the automatic restart of the device after the abnormal signal occurs in the microcomputer device, avoiding the staff to waste a lot of time on low-level labor, and improving the production efficiency.

In addition, the automatic start can only be performed once. When the device is restarted, if the abnormal signal does not disappear, it will be judged as a serious defect, which realizes the automatic screening of abnormal signals and avoids repeated labor of the staff.

The application can realize the automatic restart of the relay protection device after an abnormal signal occurs in the relay protection device, avoiding the waste of a lot of time for workers to perform low-level labor, and improving production efficiency.

This application is also equipped with a remote restart function, and the staff does not need to go to the substation site to perform the restart operation, which further saves manpower and improves work efficiency.

Description of drawings

The technical solution of the present application will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the schematic diagram of the automatic restart device circuit of the embodiment of the present application;

Fig. 2 is the automatic restart control logic diagram of the embodiment of the present application;

Fig. 3 is a flowchart of an automatic restart control method according to an embodiment of the present application.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

The technical solution of the present application will be described in detail below with reference to the accompanying drawings and embodiments.

Embodiment of automatic restart control device

Example 1:

This embodiment provides an automatic restart device of a microcomputer device. This embodiment takes the automatic restart device of a relay protection device as an example to describe in detail.

As shown in Figure 1, the automatic restart device of the relay protection device includes: a double-coil magnetic latching relay, and the double-coil magnetic latching relay includes a restart coil CQDJ, a reset coil FWJ, and a first normally closed contact CQDK1 and a second Two normally closed contacts CQDK2.

The signal trigger terminals of the restart coil CQDJ and the reset coil FWJ are connected to the CPU signal output terminal of the relay protection device through the control loop. The first normally closed contact CQDK1 is connected to the power terminal of the relay protection device through the power plug-in, and the second normally closed contact CQDK2 is connected in series in the control circuit of the restart coil. Wherein, the second normally closed contact CQDK2 is a power-off holding contact, and the power-off holding function of the second normally closed contact CQDK2 is realized by controlling the reset coil FWJ.

In this embodiment, a freewheeling diode D2 is connected in parallel at both ends of the restart coil CQDJ, and a freewheeling diode D1 is connected in parallel at both ends of the reset coil FWJ. By connecting the freewheeling diode D2 (D1) in parallel at both ends of the restart coil (reset coil), when the When the current in the restart coil (reset coil) disappears, the induced electromotive force generated by the restart coil (reset coil) is consumed through the loop formed by the freewheeling diode D2 (D1) and the restart coil, thereby protecting the safety of other components in the circuit .

When the relay protection device is abnormal, that is, the CPU of the relay protection device sends a restart trigger signal, the restart coil CQDJ is triggered to be energized, the first normally closed contact CQDK1 and the second normally closed contact CQDK2 are disconnected, and the first normally closed contact Since the point CQDK1 is connected in series in the power circuit of the relay protection device, when the first normally closed contact CQDK1 is disconnected, the power circuit of the relay protection device is disconnected, and the relay protection device is powered off; the second normally closed contact Since CQDK2 is connected in series in the control circuit of the restart coil CQDJ, the disconnection of the second normally closed contact CQDK2 will cause the restart coil CQDJ to be de-energized, and then the first normally closed contact CQDK1 returns to the normally closed state, and the relay protection device resumes Power supply, so as to realize the automatic restart of the relay protection device. Through automatic restart, the staff is prevented from wasting a lot of time on low-level labor, and the production efficiency is improved.

Since the second normally closed contact CQDK2 is a power-off hold contact, it remains disconnected when the restart coil CQDJ is powered off, so that the control circuit of the restart coil CQDJ remains disconnected to prevent the relay protection device from After restarting, if the abnormal signal still exists, the relay protection device will fall into a cycle of continuous restarting.

When the relay protection device is restarted, if the abnormal signal still exists, it is determined that the relay protection device has a serious defect that cannot be recovered, and manual processing is required to realize the automatic identification of abnormal signals.

When the manual processing is completed and the relay protection device works normally, the CPU triggers the reset coil to be energized, and the second normally closed contact CQDK2 immediately returns to the normally closed state, and the automatic restart device returns to the initial state.

For the restart trigger, this embodiment sets two trigger modes: remote trigger and local trigger. The local trigger means that the CPU of the relay protection device sends a restart trigger signal according to the detected abnormal signal itself. Remote triggering is achieved through the monitoring computer installed in the monitoring room. When the operation and maintenance personnel detect that the relay protection device is abnormal through the monitoring computer, the operation and maintenance personnel will send a remote restart trigger command to the CPU through the monitoring computer, and the CPU will send a remote restart trigger. Signal.

As shown in Figure 2, for the remote restart trigger and local restart trigger, the mode can be selected through the selection switch SK. When the contacts 1 and 2 are connected, the remote trigger can be performed. When the contacts 3 and 4 are connected, In-place triggering is possible. The abnormal signals that can trigger the on-site restart of the relay protection device include: device alarm, device abnormality, SV link disconnection, GOOSE link disconnection, etc. When the CPU detects any abnormal signal, it can send a signal that triggers the restart and control The restart coil is energized. At the same time, no matter whether the CPU detects its own abnormal signal or a remote restart trigger signal, it can trigger the restart coil to be energized.

For reset triggering, this application provides two trigger modes: remote trigger reset and local trigger reset. In this embodiment, a button switch for local trigger reset is set on the relay protection device, and a monitoring computer is set in the monitoring room. , the control output terminal of the monitoring computer is connected with the CPU of the relay protection device. During the routine inspection, the operation and maintenance personnel only need to press the button switch to trigger the reset coil to be energized on the spot; in the monitoring room, the remote reset trigger command can be sent to the CPU through the monitoring computer, and the CPU can send the remote reset trigger command. Signal.

The selection of the reset trigger mode can also be selected through a selection switch.

By setting the remote trigger function, the staff does not need to go to the substation site for operation, which saves manpower and improves work efficiency.

In other embodiments, all microcomputer devices that require automatic restart can adopt the automatic restart control device of the present application, not limited to relay protection devices.

Example 2

In this embodiment, on the basis of Embodiment 1, the restart coil CQDJ, reset coil FWJ, and the first normally closed contact CQDK1 and the second normally closed contact CQDK2 are integrated on a PCB board, which is integrated in the relay Inside of protection devices or other microcomputer devices that require automatic restart.

The circuit connections of the restart coil CQDJ, the reset coil FWJ, the first normally closed contact CQDK1 and the second normally closed contact CQDK2, and the working principles are the same as those in the first embodiment.

Embodiment of automatic restart control method

Still taking the automatic restart of the relay protection device as an example, the automatic restart control method of the relay protection device is as follows:

1. The CPU of the relay protection device monitors in real time whether there are any abnormal signals such as "device abnormality", "device alarm", "SV signal disconnection", "GOOSE signal disconnection", etc., if any type of abnormal signal is detected , the restart coil CQDJ is triggered through the control loop;

2. After the restart coil CQDJ triggers power-on, control the corresponding first normally closed contact CQDK1 and the second normally closed contact CQDK2 to disconnect;

3. Since the first normally closed contact CQDK1 is connected in series in the power circuit of the relay protection device, after the first normally closed contact CQDK1 is disconnected, the power circuit of the relay protection device is disconnected, and the relay protection device is powered off; The two normally closed contacts CQDK2 are connected in series in the control circuit of the restart coil CQDJ, after the second normally closed contact CQDK2 is disconnected, the control circuit of the restart coil CQDJ is disconnected, the restart coil CQDJ is powered off and reset, and then the first normally closed contact is controlled The contact CQDK1 returns to the normally closed state, the relay protection device resumes power supply, and realizes the automatic restart of the relay protection device;

4. After the relay protection device is restarted, if the abnormal signal still exists, it is determined that the relay protection device has a major defect and needs to be handled manually;

5. After the operation and maintenance personnel have completed the inspection and maintenance of the relay protection device, they control the reset coil FWJ to trigger power-on, so that the second normally closed contact CQDK2 returns to the closed state, thereby automatically restarting the device to restore the initial state.

In this embodiment, after the relay protection device is restarted for the first time, since the second normally closed contact CQDK2 remains disconnected, the control loop of the restart coil is in the disconnected state, and the restart coil will not be triggered again, avoiding the relay protection Infinite reboots of the device.

In this embodiment, two trigger modes, remote trigger and local trigger, are set for restart trigger and reset trigger:

For the restart trigger, the CPU of the relay protection device sends a restart trigger signal according to the detected abnormal signal itself. The abnormal signal includes: device alarm, device abnormality, SV link disconnection, GOOSE link disconnection, etc. Remote triggering is achieved through the monitoring computer installed in the monitoring room. When the operation and maintenance personnel detect that the relay protection device is abnormal through the monitoring computer, the operation and maintenance personnel will send a remote restart trigger command to the CPU through the monitoring computer, and the CPU will send a remote restart trigger. Signal.

For reset triggering, in this embodiment, a button switch for triggering reset on the spot is provided on the relay protection device, a monitoring computer is set in the monitoring room, and the control output terminal of the monitoring computer is connected to the CPU of the relay protection device. During the routine inspection, the operation and maintenance personnel only need to press the button switch to trigger the reset coil to be energized on the spot; in the monitoring room, the remote reset trigger command can be sent to the CPU through the monitoring computer, and the CPU can send the remote reset trigger command. Signal.

In other embodiments, all microcomputer devices that require automatic restart can adopt the automatic restart control device of the present application, not limited to relay protection devices.

Inspired by the above-mentioned ideal embodiment according to the present application, through the above-mentioned description content, relevant staff can make various changes and modifications within the scope of not departing from the technical idea of this application. The technical scope of this application is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (9)

1. a kind of be restarted automatically control equipment for microcomputer device, which is characterized in that described is restarted automatically control equipment packet Twin coil magnetic latching relay is included, the twin coil magnetic latching relay is normally closed including restarting coil, resetting coil and first Contact and the second normally-closed contact, the control restarted coil and resetting coil and be connected to microcomputer device by respective control loop Output end processed, first normally-closed contact are connected in series in the electric power loop of microcomputer device, the second normally-closed contact series connection It is connected in the control loop for restarting coil, and second normally-closed contact is that power-off keeps contact；

When microcomputer device control output end issue restart trigger signal when, restart coil and trigger electric, the first normally-closed contact and Second normally-closed contact disconnects, microcomputer device power-off, while restarting coil blackout, and the first normally-closed contact restores normally off immediately, Microcomputer device works on after restoring electricity；

Second normally-closed contact is always maintained at normally open, until the control of microcomputer device exports due to having the function of that power-off is kept When end issues reset trigger signal, triggering resetting coil obtains electric, the second normally-closed contact recovery normally off.

2. according to claim 1 be restarted automatically control equipment, which is characterized in that first normally-closed contact passes through power supply Plug-in unit is connected to the power end of microcomputer device.

3. according to claim 1 be restarted automatically control equipment, which is characterized in that the microcomputer device includes CPU, described Restart the signal output end that coil and resetting coil are connected to the CPU of microcomputer device by respective control loop.

4. according to claim 3 be restarted automatically control equipment, which is characterized in that the trigger signal of restarting includes micro- What machine device was issued extremely due to itself restarts the remote reboot trigger signal that trigger signal and operation maintenance personnel are sent on the spot, Wherein, the CPU that remote reboot trigger signal is sent to microcomputer device by monitoring indoor monitoring computer by operation maintenance personnel, and It is controlled and is triggered by CPU；It is described to restart trigger signal on the spot by CPU according to the control triggering of itself abnormal signal of the device detected.

5. according to claim 3 be restarted automatically control equipment, which is characterized in that the reset trigger signal includes just Ground reset trigger signal and remote reset trigger signal, the reset trigger signal on the spot by be mounted on microcomputer device by Button switch realizes that the remote reset trigger signal is sent to microcomputer dress by monitoring indoor monitoring computer by operation maintenance personnel The CPU set, and controlled and triggered by CPU.

6. a kind of be restarted automatically control method using be restarted automatically equipment as described in claim 1, which is characterized in that it is described from It is dynamic to restart control method and include the following steps:

(1) when microcomputer device exception, when needing to restart, the control output end of microcomputer device, which issues, restarts trigger signal, triggering weight It opens coil and obtains electric, the first normally-closed contact and the disconnection of the second normally-closed contact immediately；

After (2) first normally-closed contacts disconnect, microcomputer device power-off；After second normally-closed contact disconnects, the control loop of coil is restarted It disconnects, restarts coil blackout reset；

(3) restarting coil blackout resets the first normally-closed contact, and microcomputer device restores electricity, and realizes restarting for microcomputer device；

(4) after microcomputer device is restarted, the second normally-closed contact is still remained off, only when the control output end of microcomputer device When issuing reset trigger signal, resetting coil obtains electric, the second normally-closed contact reset.

7. according to claim 6 be restarted automatically control method, which is characterized in that in step (4), microcomputer device is restarted Afterwards, if abnormality does not release still, it is determined with significant trouble, needs artificial treatment, and after the completion of artificial treatment, is touched Hair resets；If after microcomputer device is restarted, abnormality is released, then directly triggering resets.

8. according to claim 6 be restarted automatically control method, which is characterized in that the trigger signal of restarting includes micro- What machine device was issued extremely due to itself restarts the remote reboot trigger signal that trigger signal and operation maintenance personnel are sent on the spot.

9. according to claim 6 be restarted automatically control method, which is characterized in that the reset trigger signal includes on the spot Reset trigger signal and remote reset trigger signal.