A one-device operation switching device

Abstract

The application provides a one-time device operation switching device, which comprises a body and a pluggable terminal block; one side of the terminal block is connected with multiple groups of normally open contact points and multiple groups of normally closed contact points on a switch, a knife switch and a ground knife; the body is provided with a CPU board, a switching potential transmission board connected with the CPU board and four main buttons; the switching potential transmission board is provided with a clamping groove for realizing hot plugging of the other side of the terminal block; each main button triggers one function among remote, on-site, stop and maintenance and generates a corresponding analog signal when pressed by a user for an odd number of times, or interrupts any function triggering when pressed by a user for an even number of times; the CPU board determines the on-off state of the normally open or / and normally closed contact points on the switch, the knife switch and the ground knife according to the analog signal and converts the analog signal into a potential signal for transmission; the switching potential transmission board receives the potential signal to perform switching operation on the normally open or / and normally closed contact points on the terminal block, so as to realize function transmission. The application can improve the service life and convenience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power system, and particularly relates to a primary equipment operation switching device. BACKGROUND

[0002] The primary equipment in a power system substation often needs to be stopped and powered on and the system mode is adjusted, and when the primary equipment is operated, the operating personnel usually operate at the operator workstation or remotely operate from the dispatch end, and sometimes the operating personnel also operate on site in the on-site control cabinet.

[0003] At present, the primary equipment operation switching device is used in many places, and is mainly used for switching the switching, the switch and the ground switch connected to the primary equipment. For example, the number of primary equipment operation switching devices used in a 110kV substation is about 49, the number of primary equipment operation switching devices used in a 220kV substation is about 88, and the number of primary equipment operation switching devices used in a 500kV substation is about 150.

[0004] However, the production manufacturers, product quality, secondary wiring and working principle involved in the many primary equipment operation switching devices are quite different, and when the actual application of the substation is matched, the signal of the control cabinet and the measurement and control device is different, and the design drawing also has a large difference. Therefore, when the primary equipment operation switching device is replaced, the technical skill level of the on-site workers is required to be high, and the risk to the human body and the power grid is large during the replacement process.

[0005] In the prior art, the traditional primary equipment operation switching device is mainly divided into remote, on-site, stop and maintenance positions, and several pairs of normally open contacts and normally closed contacts are configured for each position for users to use, and the position selection is performed on site by rotating the handle. At this time, the handle drives the whole contact and position change through an iron rod penetrating through the whole base, and once the iron rod is used for a long time, the iron rod will be out of place and jammed, which will cause the primary equipment operation switching device to be unable to be used again.

[0006] Therefore, in order to solve the above technical problems, it is necessary to improve the existing primary equipment operation switching device to improve the service life and convenience. SUMMARY

[0007] The technical problem to be solved by the embodiment of the present application is to provide a primary equipment operation switching device, which can improve the service life and convenience.

[0008] In order to solve the above technical problems, the embodiment of the present application provides a primary equipment operation switching device, which comprises a body and a pluggable terminal block.

[0009] One side of the terminal block row is connected with a plurality of groups of normally open contact points and a plurality of groups of normally closed contact points on the switch, the knife switch and the ground knife connected with the primary equipment for operating switching;

[0010] The body comprises a shell; the shell is internally provided with a CPU board and a switching potential transmission board; the shell is externally provided with four main buttons; the CPU board is connected with the switching potential transmission board and the four main buttons; the switching potential transmission board is provided with a clamping groove for realizing hot plugging of the other side of the terminal block row;

[0011] Each main button comprises a pressed state and a reset state; each main button is used to present the pressed state when pressed by a user an odd number of times, to trigger a corresponding one of remote, on-site, disablement and maintenance functions and to generate a corresponding analog signal; and to present the reset state when pressed by a user an even number of times, to interrupt the triggered corresponding function;

[0012] The CPU board is used to define the received analog signal according to a preset signal and contact point mapping table when receiving the analog signal generated by a certain main button, to determine the on-off state of each group of normally open contact points and normally closed contact points on the switch, the knife switch and the ground knife connected with the primary equipment, and to process the determined on-off state of the contact points into a corresponding potential signal and further issue the potential signal to the switching potential transmission board; wherein the signal and contact point mapping table is used to indicate the relationship between any one of remote, on-site, disablement and maintenance functions and one or more groups of normally open contact points and normally closed contact points on the switch, the knife switch and the ground knife connected with the primary equipment, and to reflect the on-off state of the corresponding normally open contact points and normally closed contact points;

[0013] The switching potential transmission board is used to select the corresponding connected normally open contact points or / and normally closed contact points on the terminal block row to perform switching operation when receiving the potential signal issued by the CPU board, to realize transmission of a corresponding one of remote, on-site, disablement and maintenance functions.

[0014] Further comprising: at least one standby button connected with the CPU board; wherein,

[0015] Each standby button is arranged outside the shell and comprises a pressed state and a reset state; each standby button is used to back up the triggering function of a corresponding main button, to present the pressed state when pressed by a user an odd number of times, to enable a corresponding one of remote, on-site, disablement and maintenance functions triggered by the corresponding standby main button to generate a corresponding analog signal; and to present the reset state when pressed by a user an even number of times, to interrupt the function triggered by the corresponding standby main button.

[0016] Wherein, the backup of the triggering function of any standby button and the corresponding main button is realized by generating the same analog signal by both.

[0017] Further comprising: a display screen for human-computer interaction; wherein,

[0018] The display screen is arranged outside the shell and connected with the CPU board, for receiving user instructions to pre-construct the signal and contact point mapping table; and display the corresponding function triggered by the current main button and the on-off state of the normally open contact and normally closed contact on the switch, knife switch and ground knife connected with the determined primary device in the CPU board.

[0019] Further comprising: a device button for human-computer interaction; wherein,

[0020] The device button is arranged outside the shell and connected with the CPU board, including up, down, left, right, confirm, switch and exit buttons; the device button is used to switch the display mode and content of the display screen according to the buttons.

[0021] Further comprising: a power amplifier; wherein,

[0022] The power amplifier is arranged outside the shell and connected with the CPU board, for issuing an alarm or playing the corresponding function triggered by the current main button through sound.

[0023] Further comprising: at least one data interface; wherein,

[0024] The data interface is a USB interface, which is arranged outside the shell and connected with the CPU board, for data transmission.

[0025] Further comprising: a cooling fan; wherein,

[0026] The cooling fan is arranged outside the shell and connected with the CPU board, for cooling.

[0027] The embodiment of the present application has the following beneficial effects:

[0028] 1. Compared with the manual handle switching mode of the traditional primary device operation switching device, the primary device operation switching device of the present application uses buttons to switch modes to select remote, local, stop and maintenance gears, solves the problem that the primary device operation switching device can no longer be used due to the disconnection and jamming of the iron rod after long-term use in the traditional primary device operation switching device, and thus improves the service life and convenience.

[0029] 2, The primary equipment operation switching device of the application adopts fixed mode on the wiring terminal block, and is connected with the multiple groups of normally open contact points and the multiple groups of normally closed contact points on the switch, the knife switch and the ground knife for operation switching, once a fault occurs, only the primary equipment operation switching device body of the application needs to be replaced from the wiring terminal block, and then the new primary equipment operation switching device body is reinstalled on the wiring terminal block, so that the traditional cumbersome process and danger are avoided, the error possibility is reduced, and the service life and convenience are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0031] Figure 1 The distribution diagram of the external structure of the body shell of the primary equipment operation switching device provided in the embodiment of the application;

[0032] Figure 2 The connection diagram of the internal logic structure of the body shell of the primary equipment operation switching device provided in the embodiment of the application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the application more clear, the following will further describe the application in combination with the drawings.

[0034] As shown in Figure 1 and Figure 2 , the primary equipment operation switching device provided in the embodiment of the application includes a body and a pluggable wiring terminal block 2; wherein,

[0035] One side of the wiring terminal block 2 is connected with the multiple groups of normally open contact points (not shown) and the multiple groups of normally closed contact points (not shown) on the switch, the knife switch and the ground knife for operation switching connected with the primary equipment; it should be noted that the terminal connection mode of the normally open contact points and the normally closed contact points on the wiring terminal block 2 can be completely the same as the handle connection mode on the traditional primary equipment operation switching device, only the corresponding terminals of the wiring terminal block 2 are used to replace the connection points of the handle for unified deployment (as shown in Figure 1 ), and are selected and controlled through simple electrical signals; of course, the handle connection mode on the traditional primary equipment operation switching device can also be distinguished, only all the normally open contact points and the normally closed contact points are connected with the primary equipment, and are selected and controlled through complex electrical signals;

[0036] The body comprises a shell 11; the shell 11 is internally provided with a CPU board 111 and a switch potential transmission board 112; the shell 11 is externally provided with four main buttons 121; the CPU board 111 is connected with the switch potential transmission board 112 and the four main buttons 121; the switch potential transmission board 112 is provided with a card slot (not shown) for realizing hot plug of the other side of the terminal block 2;

[0037] Each main button 121 comprises a pressed state and a reset state; each main button 121 is used for being in the pressed state when pressed by a user for an odd number of times, so as to trigger a corresponding one of remote, on-site, disablement and maintenance functions, and generate a corresponding analog signal; and being in the reset state when pressed by the user for an even number of times, so as to interrupt the triggered corresponding function; it should be noted that different analog signals are generated so that the CPU board 111 can distinguish different main button triggers and the triggered functions;

[0038] The CPU board 111 is used for, when receiving an analog signal generated by a certain main button 121, defining the received analog signal according to a preset signal and contact mapping table, so as to determine the on-off state of each group of normally open contacts and normally closed contacts on the switch, knife switch and ground knife connected with the primary equipment, and process the on-off state of the determined contacts into a corresponding potential signal, and further send the potential signal to the switch potential transmission board 112; wherein the signal and contact mapping table is used for indicating the relationship between any one of remote, on-site, disablement and maintenance functions and one or more groups of normally open contacts and normally closed contacts on the switch, knife switch and ground knife connected with the primary equipment, and reflecting the on-off state of the corresponding normally open contacts and normally closed contacts;

[0039] The switch potential transmission board 112 is used for, when receiving the potential signal sent by the CPU board 111, selecting the corresponding connected normally open contact or / and normally closed contact on the terminal block 2 to perform a switching operation, so as to realize the transmission of a corresponding one of remote, on-site, disablement and maintenance functions; it should be noted that the switch potential transmission board 112 can be matched with the connecting piece between the terminals in the terminal block 2, and the connecting piece between the corresponding terminals is turned on or cut off by different potentials to realize the switching operation of the corresponding connected normally open contact or / and normally closed contact; the specific process is realized by the common technical means in the art, and will not be elaborated here. In addition, since there are various ways of connecting the normally open contacts and normally closed contacts to the terminals on the terminal block 2, the selection mode of the corresponding potential signal will be flexibly adjusted to realize the switching of different functions, which will not be described here.

[0040] In the embodiment of the present application, considering the scenario that one or more main buttons 121 are disabled, the primary equipment operation switching device further comprises at least one standby button 122 connected with the CPU board; wherein,

[0041] Each of the standby buttons 122 is arranged outside the shell 11, including a pressed state and a reset state; each of the standby buttons is used to back up the triggering function of a corresponding main button 121, and when pressed by a user an odd number of times, the standby button is in the pressed state, enabling the corresponding function triggered by the corresponding standby main button to generate a corresponding analog signal; and when pressed by a user an even number of times, the standby button is in the reset state, interrupting the function triggered by the corresponding standby main button. At this time, the standby of the triggering function of any standby button and the corresponding main button is realized by generating the same analog signal by the two, that is, the type of analog signal generated by the corresponding standby button 122 when pressed is defined in advance, so that the CPU board 111 can quickly identify the main button 121 replaced by the standby button 122 according to the type of analog signal generated by the standby button 122. It can be understood that the analog signal type can be distinguished according to different level values.

[0042] In the embodiment of the application, the one-time device operation switching device is also provided with a display screen 123 for human-computer interaction, a device button 124 for human-computer interaction, a power amplifier 125, at least one data interface 126, and a cooling fan 126 outside the shell 11; wherein,

[0043] The display screen 123 is connected to the CPU board 111, used to receive user instructions, to pre-construct a signal and contact point correspondence mapping table; and display the corresponding function triggered by the current main button and the on-off state of the normally open contact and normally closed contact on the switch, knife switch and ground knife of the one-time device determined in the CPU board, etc.

[0044] The device button 124 is connected to the CPU board 111, including up, down, left, right, confirm, switch and exit buttons; the device button 124 is used to switch the display mode and content of the display screen 123 according to the buttons;

[0045] The power amplifier 125 is connected to the CPU board 111, used to issue an alarm or play the corresponding function triggered by the current main button 121 through sound;

[0046] The data interface 126 is a USB interface and is connected to the CPU board 111, used for data transmission;

[0047] The cooling fan 127 is connected to the CPU board 111, used for cooling.

[0048] Further description is made on the application scene of the one-time device operation switching device proposed in the embodiment of the application, as follows:

[0049] 1. Installation and debugging, after determining the position of the primary equipment operation switching device of the application, connecting the power supply line and performing power-on test to ensure that the device operates normally. At the same time, test whether each menu in the display screen 123 enters correctly through the device button 124, and after the power-on is correct, the test setting value needs to be input, all the switches, knife switches and ground switches connected with the primary equipment, and the normally open contact points and normally closed contact points of each switch, knife switch and ground switch are debugged through external equipment, whether the normally open and normally closed contact points defined by the device are consistent, and whether the device alarm function can be accurately and correctly sent.

[0050] 2. All secondary lines of the manual handle switching mode of the traditional primary equipment operation switching device are disconnected, the secondary lines are reconnected on the terminal block 2 through the contact point definition of the primary equipment operation switching device of the application, and the secondary lines do not need any change in subsequent work.

[0051] 3. Setting value execution, according to the corresponding function of the traditional primary equipment operation switching device, the contact point definition is constructed to indicate the relationship between any one of the functions of remote, local, stop and maintenance and the normally open contact points and normally closed contact points of a group or more of the switches, knife switches and ground switches connected with the primary equipment, and the signal reflecting the on-off state of the corresponding normally open contact points and normally closed contact points is mapped to the contact point mapping table, and after the contact point definition, it is checked to ensure correctness.

[0052] 4. Function acceptance, after the wiring and contact point definition are correct, the acceptance work is performed according to the actual situation on site, the loop acceptance is performed through the main button 121 corresponding to the functions of remote, local, stop and maintenance on the primary equipment operation switching device of the application, and the specific display can be checked through the primary equipment operation switching device of the application, and the potential situation of the operator workstation monitoring background, measurement and control device, control loop and interlocking loop is checked.

[0053] 5. Device commissioning, after the function acceptance of the primary equipment operation switching device of the application is correct, the device is put into actual use on site, and the places needing improvement are summarized according to the actual use situation on site, and the operation personnel are provided with operation instructions.

[0054] The embodiment of the application has the following beneficial effects:

[0055] 1. Compared with the manual handle switching mode of the traditional primary equipment operation switching device, the primary equipment operation switching device of the application adopts button mode switching to select the remote, local, stop and maintenance gears, solves the problem that the primary equipment operation switching device can no longer be used due to the disconnection and jamming of the iron rod after long-term use, and improves the service life and convenience.

[0056] 2、The primary equipment operation switching device of the application adopts fixed mode in the wiring terminal block, and is connected with the switch, the knife switch and the ground knife of the primary equipment, and is connected with the multiple groups of normally open contact points and the multiple groups of normally closed contact points for operation switching. Once a failure occurs, only the primary equipment operation switching device body of the application needs to be replaced from the wiring terminal block, and then the new primary equipment operation switching device body is reinstalled on the wiring terminal block, so that the traditional cumbersome process and danger are avoided, the error possibility is reduced, and the service life and convenience are further improved.

[0057] The above only discloses the preferred embodiments of the application, and of course cannot limit the scope of the right of the application, so the equivalent changes made according to the claims of the application still belong to the scope covered by the application.

Claims

1. A one-device-operation switching apparatus characterized by comprising: The utility model relates to a kind of switchgear remote control device, including body and pluggable terminal block;Wherein, One side of the terminal block is connected with multiple groups of normally open contacts and multiple groups of normally closed contacts on the switch connected with primary equipment, knife switch and ground knife for operating switching; The body includes a shell, a CPU board and a switching potential transmission board are arranged in the shell, four main buttons are arranged outside the shell, the CPU board is connected with the switching potential transmission board and the four main buttons, and a clamping groove for realizing hot plug on the other side of the terminal block is arranged on the switching potential transmission board. Each main button includes a pressed state and a reset state, is used to present the pressed state when pressed by user odd times to trigger a corresponding function of remote, on-site, disable and maintenance, and generate a corresponding analog signal, and present the reset state when pressed by user even times to interrupt the triggered function. The CPU board is used to define the contacts according to a preset signal-contact mapping table when receiving the analog signal generated by a main button, to determine the on-off state of each group of normally open contacts and normally closed contacts on the switch connected with primary equipment, knife switch and ground knife, and process the on-off state of the determined contacts into a corresponding potential signal, and further send to the switching potential transmission board. The switching potential transmission board is used to select the corresponding normally open contacts or / and normally closed contacts on the terminal block to perform switching operation when receiving the potential signal sent by the CPU board, to realize the transmission of a corresponding function of remote, on-site, disable and maintenance.

2. The single device operation switching apparatus of claim 1, wherein Further comprising: At least one spare button connected with the CPU board;Wherein, Each spare button is arranged outside the shell, includes a pressed state and a reset state, is used to trigger a corresponding function of remote, on-site, disable and maintenance of the corresponding main button, and generate a corresponding analog signal when pressed by user odd times, and present the reset state when pressed by user even times to interrupt the function triggered by the corresponding main button.

3. The single device operation switching apparatus of claim 2, wherein The trigger function of any spare button and corresponding main button is realized by generating the same analog signal.

4. The single device operation switching apparatus of claim 3, wherein Further comprising: A display screen for human-computer interaction;Wherein, The display screen is arranged outside the shell and connected with the CPU board, is used to receive user instructions to pre-construct the signal-contact mapping table, and display the corresponding function triggered by the current main button and the on-off state of the normally open contacts and normally closed contacts on the switch connected with primary equipment, knife switch and ground knife determined in the CPU board.

5. The single device operation switching apparatus of claim 4, wherein Further comprising: A device button for human-computer interaction;Wherein, The device button is arranged outside the shell and connected with the CPU board, including up, down, left, right, confirm, switch and exit buttons; the device button is used for switching the display mode and content of the display screen according to the button.

6. The single device operation switching apparatus of claim 5, wherein Further comprising: A power amplifier; wherein The power amplifier is arranged outside the shell and connected with the CPU board, and is used for issuing an alarm or playing a corresponding function triggered by a current main button through sound.

7. The single device operation switching apparatus of claim 6, wherein Further comprising: At least one data interface; wherein The data interface is a USB interface, which is arranged outside the shell and connected with the CPU board, and is used for data transmission.

8. The single device operation switching apparatus of claim 7, wherein Further comprising: A cooling fan; wherein The cooling fan is arranged outside the shell and connected with the CPU board, and is used for cooling.

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