Remote control device for operating mechanism of transformer substation

Abstract

A remote control device for a substation operating mechanism belongs to the field of instruction remote control and comprises a power supply unit, an MCU microprocessor, a communication unit, a network unit, a control unit and an output unit. The MCU microprocessor receives an external operation instruction through the communication unit; the MCU microprocessor receives an external operation instruction through the network unit; a control instruction is sent to the control unit through the MCU microprocessor; a control instruction of the MCU microprocessor is transmitted to the output unit through the control unit, and the output unit outputs a control signal according to the control instruction; and the output unit outputs a control signal according to the control instruction of the MCU microprocessor so as to remotely control the opening and closing of the substation operating mechanism. According to the remote control device for the operating mechanism of the transformer substation, a remote control mode is used, so that the unified dispatching management efficiency is improved, the safety risk of operators is reduced, the working efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of substation dispatching management, and particularly relates to a remote control device for a substation operating mechanism. Background Art

[0002] The operating mechanisms in a substation mainly include switches and disconnectors. The switching operation involved refers to the operation of changing the operating state of electrical equipment from one state to another. The switching operation specifically includes: opening and closing operations of circuit breakers or switches, opening and closing operations of disconnectors, removal and / or hanging of grounding wires, removal and / or installation of fuses, voltage inspection, equipment insulation inspection, etc.

[0003] At present, the traditional switching operations of substation switches and disconnectors are all manually operated by humans, which has certain safety hazards, such as the risk of electric shock, endangering personal safety. In addition, manual operation by humans also has problems of inconvenient remote management and being unfavorable for integrated automation dispatching management. Content of the Utility Model

[0004] To achieve the above object, the utility model provides a remote control device for a substation operating mechanism, and its specific implementation technical solution is as follows:

[0005] A remote control device for a substation operating mechanism of the utility model includes: a power supply unit, an MCU microprocessor, a communication unit, a network unit, a control unit, and an output unit;

[0006] The MCU microprocessor, the communication unit, the network unit, the control unit, and the output unit are respectively connected to the power supply unit, and the power supply unit provides power for the MCU microprocessor, the communication unit, the network unit, the control unit, and the output unit;

[0007] The MCU microprocessor is connected to the communication unit, and the MCU microprocessor receives external operation instructions through the communication unit;

[0008] The MCU microprocessor is connected to the network unit, and the MCU microprocessor receives external operation instructions through the network unit;

[0009] The MCU microprocessor is connected to the control unit, and a control instruction is sent to the control unit through the MCU microprocessor;

[0010] The control unit is connected to the output unit, and the control instruction of the MCU microprocessor is transmitted to the output unit through the control unit, and the output unit outputs a control signal according to the control instruction;

[0011] The output unit is connected to the control mechanism circuit of the substation operating mechanism. The output unit outputs a control signal according to the control instruction of the MCU microprocessor to remotely control the opening and closing of the substation operating mechanism.

[0012] As a preferred specific embodiment, a remote control device for a substation operating mechanism of the present invention further includes a communication network shutdown device. A physical network connection is established between the network unit and the communication network shutdown device, and data instructions between the MCU microprocessor and the communication network shutdown device are transmitted through the network unit.

[0013] As a more preferred specific embodiment, the communication network shutdown device communicates with the dispatching data network, the remote dispatching network or the centralized control center network respectively to achieve remote operation control.

[0014] As a preferred specific embodiment, a remote control device for a substation operating mechanism of the present invention further includes a host computer. Data instructions are transmitted between the communication unit and the host computer in the manner of a proprietary network protocol, and data instructions between the MCU microprocessor and the host computer are transmitted through the communication unit.

[0015] As a preferred specific embodiment, the power supply unit is implemented by a power management chip; the MCU microprocessor is implemented by a single-chip microcomputer; the communication unit is implemented by an RS485 interface chip plus an RS485 interface protection circuit; the network unit is implemented by a network chip; the overall circuits of the control unit and the output unit adopt a first driving chip and a second driving chip.

[0016] As a more preferred specific embodiment, the RS485 interface protection circuit is composed of a first diode pair, a second diode pair and a third diode pair. The first diode pair, the third diode pair and the second diode pair are connected in series in sequence; the sixth pin of the RS485 interface chip is connected to the second diode pair and the third diode pair through a fifth wiring terminal, and the seventh pin of the RS485 interface chip is connected to the first diode pair and the third diode pair through a fifth wiring terminal.

[0017] As a more preferred specific embodiment, the thirty-ninth pin of the single-chip microcomputer is connected to the fourth pin of the RS485 interface chip through a cable.

[0018] As a more preferred specific embodiment, the eighteenth pin of the single-chip microcomputer is connected to the seventh pin of the network chip through a cable, and the sixth pin of the network chip is connected to the communication network shutdown device for transmission.

[0019] As a more preferred specific embodiment, filter capacitors are connected between the tenth pin, the eleventh pin and the twelfth pin of the network chip.

[0020] As a more preferred specific embodiment, the fortieth pin, forty - first pin, forty - second pin, forty - third pin, forty - fourth pin, and first pin of the single - chip microcomputer are respectively connected to the sixth pin, fifth pin, fourth pin, third pin, second pin, and first pin of the first driving chip. The sixteenth pin, fifteenth pin, fourteenth pin, thirteenth pin, twelfth pin, and eleventh pin of the first driving chip are respectively connected to the first relay, second relay, third relay, fourth relay, fifth relay, and sixth relay in the control mechanism circuit of the substation operating mechanism; the thirtieth pin, thirty - first pin, thirty - second pin, thirty - third pin, thirty - fourth pin, and thirty - fifth pin of the single - chip microcomputer are respectively connected to the second pin, first pin, third pin, fourth pin, fifth pin, and sixth pin of the second driving chip. The sixteenth pin, fifteenth pin, fourteenth pin, thirteenth pin, twelfth pin, and eleventh pin of the second driving chip are respectively connected to the seventh relay, eighth relay, ninth relay, tenth relay, eleventh relay, and twelfth relay in the control mechanism circuit of the substation operating mechanism.

[0021] The beneficial effects of the present utility model are:

[0022] A remote control device for a substation operating mechanism provided by the present utility model improves the unified dispatching and management efficiency by using the remote control method, reduces the safety risks of operators, improves the work efficiency, and reduces the labor cost.

[0023] A remote control device for a substation operating mechanism provided by the present utility model can not only perform remote control operations within the station, but also achieve remote operations, providing a feasible method for unified dispatching and management. Description of the Drawings

[0024] Figure 1 It is a block diagram of the structural composition of a remote control device for a substation operating mechanism provided by the present utility model.

[0025] Figure 2 It is a specific circuit diagram of the single - chip microcomputer.

[0026] Figure 3 It is a specific circuit diagram of the RS485 interface chip.

[0027] Figure 4 It is a protection circuit diagram of the RS485 interface.

[0028] Figure 5 It is a specific circuit diagram of the network chip.

[0029] Figure 6 It is a specific circuit diagram of the first driving chip.

[0030] Figure 7It is the specific circuit diagram of the second drive chip.

[0031] Figure 8 It is the specific circuit diagram of each relay.

[0032] In the figure, there are power supply unit 1, MCU microprocessor 2, communication unit 3, network unit 4, control unit 5, output unit 6, communication network shutdown device 7, host computer 8, first drive chip U1, single-chip microcomputer U2, second drive chip U3, network chip U4, RS485 interface chip U5, first diode pair D1, second diode pair D2, third diode pair D3, filter capacitor C1, and first relay - twelfth relay J1 - J12. Specific implementation mode

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] See Figure 1 As shown, a remote control device for a substation operating mechanism provided by the present utility model is a remote control operation device for switches and disconnectors in a substation, mainly including the following components:

[0035] Power supply unit 1, MCU microprocessor 2, communication unit 3, network unit 4, control unit 5, output unit 6, communication network shutdown device 7, and host computer 8.

[0036] Among them, the said MCU microprocessor 2, communication unit 3, network unit 4, control unit 5, and output unit 6 are respectively connected to the said power supply unit 1 through cables. The said power supply unit 1 is mainly used to provide power for the MCU microprocessor 2, communication unit 3, network unit 4, control unit 5, and output unit 6.

[0037] Among them, the said MCU microprocessor 2 is connected to the communication unit 3 through a cable. Data instructions are transmitted between the communication unit 3 and the host computer 8 in the manner of a proprietary network protocol, and data instruction transmission between the MCU microprocessor 2 and the host computer 8 is realized through the communication unit 3.

[0038] Among them, the said MCU microprocessor 2 is connected to the network unit 4 through a cable. A physical network connection is established between the network unit 4 and the communication network shutdown device 7, and data instruction transmission between the MCU microprocessor 2 and the communication network shutdown device 7 is realized through the network unit 4.

[0039] Among them, the said communication network shutdown device 7 communicates with the dispatching data network, remote dispatching network, or centralized control center network respectively to realize remote operation control.

[0040] Among them, the said MCU microprocessor 2 is connected to the control unit 5 through a cable, and control instructions are sent from the said MCU microprocessor 2 to the control unit 5.

[0041] Among them, the said control unit 5 is connected to the output unit 6 through a cable. The control instructions of the MCU microprocessor 2 are transmitted to the output unit 6 through the said control unit 5, and the said output unit 6 outputs a control signal according to the control instructions.

[0042] Among them, the said output unit 6 is connected to the control mechanism loop of the substation operating mechanism through a cable. The said output unit 6 outputs a control signal according to the control instructions of the MCU microprocessor 2 to remotely control the opening and closing of the substation operating mechanism.

[0043] Among them, the said substation operating mechanism mainly includes, but is not limited to, the switches and disconnectors of the substation. Specifically, the said output unit 6 outputs a control signal according to the control instructions of the MCU microprocessor 2, and remotely controls the physical opening and closing of the substation switches and disconnectors by controlling the control mechanism loop of the substation operating mechanism.

[0044] A remote control device for a substation operating mechanism provided by the present utility model is a remote control device for controlling the physical opening and closing states of switches and disconnectors in a substation. It can remotely control the opening and closing operations of switches and disconnectors in the substation through a field network, and at the same time, it can communicate with the dispatching data network, remote dispatching network or centralized control center network respectively through the communication gateway 7 to achieve remote operation control.

[0045] Among them, the physical lines of the said field network can specifically be selected from twisted pairs, network cables, optical fibers, etc., but are not limited to this.

[0046] Among them, the interface types of the said field network can specifically be selected from RS485, RS232, RJ45, etc., but are not limited to this.

[0047] A remote control device for a substation operating mechanism provided by the present utility model. The MCU microprocessor 2 receives control commands sent by the upper computer 8 through the communication unit 3 (RS485, RS232 or RJ45 signal), or the MCU microprocessor 2 receives control commands from the dispatching data network, remote dispatching network or centralized control center network through the network unit 4 (network signal) and the communication gateway 7, and then drives the control unit 5 and the output unit 6 to output control signals, and uses these control signals to control the control mechanism loop of the substation operating mechanism, thereby realizing the physical opening and closing remote control of the substation switches and disconnectors.

[0048] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0049] This embodiment provides a remote control device for a substation operating mechanism, which mainly includes a power supply unit 1, an MCU microprocessor 2, a communication unit 3, a network unit 4, a control unit 5, an output unit 6, a communication network shutdown device 7, and a host computer 8.

[0050] In this embodiment, the power supply unit 1 can be specifically implemented by using an existing power management chip.

[0051] In this embodiment, the MCU microprocessor 2 can be specifically implemented by using a single-chip microcomputer U2, and its specific chip structure is as Figure 2 shown.

[0052] In this embodiment, the communication unit 3 can be specifically implemented by using an RS485 interface chip U5 plus an RS485 interface protection circuit, and its specific chip structure is as Figure 3 and Figure 4 shown. The RS485 interface protection circuit is mainly composed of a first diode pair D1, a second diode pair D2, and a third diode pair D3. The first diode pair D1, the third diode pair D3, and the second diode pair D2 are connected in series in sequence.

[0053] In this embodiment, the network unit 4 can be specifically implemented by using a network chip U4, and its specific chip structure is as Figure 5 shown.

[0054] In this embodiment, the control unit 5 and the output unit 6 are taken as a whole, and its overall circuit can be specifically implemented by using a first driver chip U1 and a second driver chip U3, and its specific chip structure is as Figure 6 and Figure 7 shown.

[0055] In the remote control device for a substation operating mechanism provided by this embodiment, the single-chip microcomputer U2, the RS485 interface chip U5, the network chip U4, the first driver chip U1, and the second driver chip U3 are respectively connected to the power management chip through cables, and the power management chip supplies power to the single-chip microcomputer U2, the RS485 interface chip U5, the network chip U4, the first driver chip U1, the second driver chip U3, etc.

[0056] In a remote control device for a substation operating mechanism provided in this embodiment, the thirty-ninth pin 39 (RXD2) of the single-chip microcomputer U2 is connected to the fourth pin 4 (TXD2) of the RS485 interface chip U5 through a cable. The sixth pin 6 of the RS485 interface chip U5 is connected to the second diode pair D2 and the third diode pair D3 through the fifth terminal block X5. The seventh pin 7 of the RS485 interface chip U5 is connected to the first diode pair D1 and the third diode pair D3 through the fifth terminal block X5. The first pin 1 (RXD2) of the RS485 interface chip U5 transmits data instructions to and from the host computer 8 in the form of a proprietary network protocol, and the RS485 interface chip U5 is used to implement the transmission of data instructions between the single-chip microcomputer U2 and the host computer 8.

[0057] In a remote control device for a substation operating mechanism provided in this embodiment, the eighteenth pin 18 (RXD1) of the single-chip microcomputer U2 is connected to the seventh pin A7 (TXD1) of the network chip U4 through a cable. The sixth pin A6 (RXD1) of the network chip U4 is connected to the communication network shutdown device 7, and the network chip U4 is used to implement the transmission of data instructions between the single-chip microcomputer U2 and the communication network shutdown device 7. Among them, a filter capacitor C1 is connected between the tenth pin A10, the eleventh pin A11, and the twelfth pin A12 of the network chip U4.

[0058] In a remote control device for a substation operating mechanism provided in this embodiment, the fortieth pin 40, forty-first pin 41, forty-second pin 42, forty-third pin 43, forty-fourth pin 44, and first pin 1 of the single-chip microcomputer U2 are respectively connected to the sixth pin 6, fifth pin 5, fourth pin 4, third pin 3, second pin 2, and first pin 1 of the first driver chip U1. The sixteenth pin 16, fifteenth pin 15, fourteenth pin 14, thirteenth pin 13, twelfth pin 12, and eleventh pin 11 of the first driver chip U1 are respectively connected to the first relay J1, second relay J2, third relay J3, fourth relay J4, fifth relay J5, and sixth relay J6 in the control mechanism circuit of the substation operating mechanism. The thirtieth pin 30, thirty-first pin 31, thirty-second pin 32, thirty-third pin 33, thirty-fourth pin 34, and thirty-fifth pin 35 of the single-chip microcomputer U2 are respectively connected to the second pin 2, first pin 1, third pin 3, fourth pin 4, fifth pin 5, and sixth pin 6 of the second driver chip U3. The sixteenth pin 16, fifteenth pin 15, fourteenth pin 14, thirteenth pin 13, twelfth pin 12, and eleventh pin 11 of the second driver chip U3 are respectively connected to the seventh relay J7, eighth relay J8, ninth relay J9, tenth relay J10, eleventh relay J11, and twelfth relay J12 in the control mechanism circuit of the substation operating mechanism. The control instructions of the single-chip microcomputer U2 are converted into control signals by the first driver chip U1 and the second driver chip U3, and the drive coils of the respective relays in the control mechanism circuit of the substation operating mechanism are controlled to be closed and opened by using the control signals. Among them, the circuit of each relay is as Figure 8 shown.

[0059] In a remote control device for a substation operating mechanism provided in this embodiment, the single-chip microcomputer U2 receives the control commands sent by the host computer 8 through the RS485 interface chip U5, or the single-chip microcomputer U2 receives the control commands from the dispatching data network, remote dispatching network, or centralized control center network through the network chip U4 and the communication network shutdown device 7, and then drives the first driver chip U1 and the second driver chip U3 to output control signals, and the drive coils of the respective relays in the control mechanism circuit of the substation operating mechanism are controlled to be closed and opened by using the control signals, so as to realize the physical opening and closing remote control of the substation switch and knife switch.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A remote control device for a substation operating mechanism, characterized in that Including: A power supply unit, an MCU microprocessor, a communication unit, a network unit, a control unit, and an output unit; The MCU microprocessor, the communication unit, the network unit, the control unit, and the output unit are respectively connected to the power supply unit, and the power supply unit provides power for the MCU microprocessor, the communication unit, the network unit, the control unit, and the output unit; The MCU microprocessor is connected to the communication unit, and the MCU microprocessor receives external operation instructions through the communication unit; The MCU microprocessor is connected to the network unit, and the MCU microprocessor receives external operation instructions through the network unit; The MCU microprocessor is connected to the control unit, and a control instruction is sent to the control unit through the MCU microprocessor; The control unit is connected to the output unit, and the control instruction of the MCU microprocessor is transmitted to the output unit through the control unit, and the output unit outputs a control signal according to the control instruction; The output unit is connected to the control mechanism loop of the substation operating mechanism, and the output unit outputs a control signal according to the control instruction of the MCU microprocessor to remotely control the opening and closing of the substation operating mechanism.

2. The remote control device for a substation operating mechanism according to claim 1, characterized in that, It further includes a communication network shutdown device. A physical network connection is established between the network unit and the communication network shutdown device, and data instructions between the MCU microprocessor and the communication network shutdown device are transmitted through the network unit.

3. The remote control device for a substation operating mechanism according to claim 2, characterized in that, The communication network shutdown device communicates with the dispatching data network, the remote dispatching network, or the centralized control center network respectively to achieve remote operation control.

4. A remote control device for a substation operating mechanism according to claim 1, characterized in that, It further includes a host computer. Data instructions are transmitted between the communication unit and the host computer in the manner of a proprietary network protocol, and data instructions between the MCU microprocessor and the host computer are transmitted through the communication unit.

5. A remote control device for a substation operating mechanism according to claim 1, characterized in that, The power supply unit is implemented by a power management chip; the MCU microprocessor is implemented by a single-chip microcomputer; the communication unit is implemented by an RS485 interface chip plus an RS485 interface protection circuit; the network unit is implemented by a network chip; the overall circuits of the control unit and the output unit use a first driving chip and a second driving chip.

6. The remote control device for a substation operating mechanism according to claim 5, wherein The RS485 interface protection circuit is composed of a first diode pair, a second diode pair, and a third diode pair. The first diode pair, the third diode pair, and the second diode pair are connected in series in sequence; the sixth pin of the RS485 interface chip is connected to the second diode pair and the third diode pair through a fifth terminal block, and the seventh pin of the RS485 interface chip is connected to the first diode pair and the third diode pair through a fifth terminal block.

7. A remote control device for a substation operating mechanism according to claim 5, characterized in that The thirty-ninth pin of the single-chip microcomputer is connected to the fourth pin of the RS485 interface chip through a cable.

8. A remote control device for a substation operating mechanism according to claim 5, characterized in that, The eighteenth pin of the single-chip microcomputer is connected to the seventh pin of the network chip through a cable, and the sixth pin of the network chip is connected to the communication network shutdown device for transmission.

9. The remote control device for a substation operating mechanism according to claim 8, characterized in that Filter capacitors are connected between the tenth pin, the eleventh pin, and the twelfth pin of the network chip.

10. A remote control device for a substation operating mechanism according to claim 5, characterized in that, The fortieth pin, forty-first pin, forty-second pin, forty-third pin, forty-fourth pin, and first pin of the single-chip microcomputer are respectively connected to the sixth pin, fifth pin, fourth pin, third pin, second pin, and first pin of the first driver chip. The sixteenth pin, fifteenth pin, fourteenth pin, thirteenth pin, twelfth pin, and eleventh pin of the first driver chip are respectively connected to the first relay, second relay, third relay, fourth relay, fifth relay, and sixth relay in the control mechanism circuit of the substation operating mechanism. The thirtieth pin, thirty-first pin, thirty-second pin, thirty-third pin, thirty-fourth pin, and thirty-fifth pin of the single-chip microcomputer are respectively connected to the second pin, first pin, third pin, fourth pin, fifth pin, and sixth pin of the second driver chip. The sixteenth pin, fifteenth pin, fourteenth pin, thirteenth pin, twelfth pin, and eleventh pin of the second driver chip are respectively connected to the seventh relay, eighth relay, ninth relay, tenth relay, eleventh relay, and twelfth relay in the control mechanism circuit of the substation operating mechanism.

Images