Substation microcomputer integrated automation system

Abstract

The utility model provides a microcomputer integrated automation system of a transformer station. Comprising a high / low-voltage front switch set, a wave recording network switch, an electric energy network switch, an I-area communication management machine, an II-area communication management machine, a server, an electric energy collector, a station control layer network switch set, a 35kV group screen protection subsystem, a 35kV switch cabinet protection subsystem, a 10kV switch cabinet protection subsystem, a low-voltage monitoring subsystem, a protocol converter and a spacing layer network switch set. The I-area communication management machine and the II-area communication management machine are in hot standby, so that when the I-area communication management machine breaks down, the other one can operate in time, a man-machine contact interface for in-station operation is provided, and the functions of managing and controlling spacing layer equipment, protecting the equipment and lines, measuring and controlling electric energy data and the like are realized; under the condition that a station control layer and a station control layer network fail, the local monitoring function of spacer layer equipment can still be independently completed; the operation safety and stability of the transformer substation are enhanced, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of substation monitoring and management, specifically a substation microcomputer integrated automation system. Background Technology

[0002] As we all know, electricity has become an essential part of our daily lives, improving our quality of life. With the increasing energy output of power generation equipment and the lengthening of power transmission lines, power systems have become more complex, and people's demands on them have also risen. Current substation management systems lack systematization and unification; many monitoring devices operate as independent systems, leading to significant duplication of effort within the substation management system. In severe cases, this directly impacts the safety and stability of substation operation, increases operating and maintenance costs, and reduces the overall economic efficiency of the substation system, ultimately failing to provide users with high-quality power. Substation integrated automation is a method adopted by humans to achieve better results. It makes substations operate more safely and stably, improves efficiency, and reduces operating and repair costs.

[0003] In summary, the industry urgently needs to improve existing substation management systems to address the issues of substation safety and stability, as well as high operation and maintenance costs. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model discloses a substation microcomputer integrated automation system.

[0005] According to embodiments of this disclosure, a substation microcomputer integrated automation system is provided, including: a high / low voltage front-end switch group, a waveform recording network switch, an energy network switch, a zone I communication management unit, a zone II communication management unit, a server, an energy collector, a station control layer network switch group, a 35kV panel protection subsystem, a 35kV switchgear protection subsystem, a 10kV switchgear protection subsystem, a low-voltage monitoring subsystem, a protocol converter, and a bay layer network switch group;

[0006] The high / low voltage front-end switch group is connected to one end of the Zone I communication management unit; the waveform recording network switch is connected to one end of the Zone II communication management unit; the power energy network switch is connected to one end of the power energy collector; the 35kV panel protection subsystem is connected to the station control layer network switch group; the server is connected to the station control layer network switch group; the other end of the Zone I communication management unit is connected to the station control layer network switch group; the other end of the Zone II communication management unit is connected to the station control layer network switch group; the low-voltage monitoring subsystem is connected to the station control layer network switch group; and one end of the protocol converter is connected to the station control layer network switch group. The other end of the protocol converter is connected to the 35kV switchgear protection subsystem and the 10kV switchgear protection subsystem. The station control layer network switch group is connected to the bay layer network switch group. The 35kV switchgear protection subsystem is connected to the bay layer network switch group. The 10kV switchgear protection subsystem is connected to the bay layer network switch group. The 35kV panel protection subsystem is connected to the 35kV switchgear protection subsystem. The 35kV panel protection subsystem is connected to the 10kV switchgear protection subsystem. The other end of the power acquisition device is connected to the 35kV switchgear protection subsystem and the 10kV switchgear protection subsystem.

[0007] Optionally, the 35kV panel protection subsystem includes a first main transformer protection and control panel, a second main transformer protection and control panel, and a common control panel; the first main transformer protection and control panel is connected to the station control layer network switch group, the second main transformer protection and control panel is connected to the station control layer network switch group, and the common control panel is connected to the station control layer network switch group.

[0008] Optionally, the 35kV switchgear protection subsystem includes a first incoming line cabinet, a first main transformer incoming line cabinet, a first PT cabinet, a sectionalizing cabinet, a second PT cabinet, a second main transformer incoming line cabinet, and a second incoming line cabinet; the first incoming line cabinet, the first main transformer incoming line cabinet, the first PT cabinet, the sectionalizing cabinet, the second PT cabinet, the second main transformer incoming line cabinet, and the second incoming line cabinet are all connected to the station control layer network switch group; the smart meters in the first incoming line cabinet, the first main transformer incoming line cabinet, the sectionalizing cabinet, the second main transformer incoming line cabinet, and the second incoming line cabinet are connected to the energy collector; the microcomputer harmonic elimination devices in the first PT cabinet and the second PT cabinet are connected to the protocol converter; the first incoming line cabinet, the first main transformer incoming line cabinet, the sectionalizing cabinet, the second main transformer incoming line cabinet, and the second incoming line cabinet are connected to the 35kV panel protection subsystem.

[0009] Optionally, the 10kV switchgear protection subsystem includes an incoming line cabinet, a PT cabinet, a transformer outgoing line cabinet, a first motor outgoing line cabinet, a first frequency converter soft starter outgoing line cabinet, a busbar lifting isolation cabinet, a bus tie cabinet, a second frequency converter soft starter outgoing line cabinet, a second motor outgoing line cabinet, two transformer outgoing line cabinets, two PT cabinets, and two incoming line cabinets. All of these cabinets are connected to the bay-level network switch group. The smart meters in the cabinets, including the first transformer outgoing cabinet, the first motor outgoing cabinet, the first frequency converter soft starter outgoing cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing cabinet, the second motor outgoing cabinet, the second transformer outgoing cabinet, and the second incoming cabinet, are all connected to the energy collector. The microcomputer harmonic elimination devices in the first PT cabinet and the second PT cabinet are connected to the protocol converter. The first incoming cabinet, the first PT cabinet, the first transformer outgoing cabinet, the first motor outgoing cabinet, the first frequency converter soft starter outgoing cabinet, the bus lift isolation cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing cabinet, the second motor outgoing cabinet, the second transformer outgoing cabinet, the second PT cabinet, and the second incoming cabinet are connected to the 35kV panel protection subsystem.

[0010] Optionally, the low-voltage monitoring subsystem includes: a communication management unit, a DC power supply unit, an intelligent device, a motor protector, a low-voltage fast switching device, a USP device, and a transformer monitoring device; the DC power supply unit is communicatively connected to the communication management unit, the USP device is communicatively connected to the communication management unit, the intelligent device is communicatively connected to the communication management unit, the low-voltage fast switching device is communicatively connected to the communication management unit, the motor protector is communicatively connected to the communication management unit, and the transformer monitoring device is communicatively connected to the communication management unit.

[0011] Optionally, the 35kV switchgear protection subsystem, 10kV switchgear protection subsystem, 35kV panel protection subsystem, and low-voltage monitoring subsystem are all connected through a station control layer network switch group and Ethernet cable.

[0012] Optionally, the protocol converter is connected to the station control layer network switch group via an RS485 bus; the energy collector is connected to the smart meter via an RS485 bus; the DC power supply is connected to the communication management unit via an RS485 bus; the USP device is connected to the communication management unit via an RS485 bus; the smart device is connected to the communication management unit via an RS485 bus; the low-voltage fast switching device is connected to the communication management unit via an RS485 bus; the motor protector is connected to the communication management unit via an RS485 bus; and the transformer monitoring device is connected to the communication management unit via an RS485 bus.

[0013] Optionally, the high / low voltage front-end switch group includes a first high / low voltage front-end switch and a second high / low voltage front-end switch; both the first high / low voltage front-end switch and the second high / low voltage front-end switch are connected to the I-zone communication management unit via optical fiber.

[0014] Optionally, the station control layer network switch group includes a first station control layer network switch, a second station control layer network switch, a third station control layer network switch, and a fourth station control layer network switch; the first station control layer network switch and the third station control layer network switch are connected via a first Ethernet cable, and the second station control layer network switch and the fourth station control layer network switch are connected via a second Ethernet cable. The first station control layer network switch is connected to one end of the first main transformer protection and control panel, the second main transformer protection and control panel, the common control panel, the I-zone communication management unit, the II-zone communication management unit, the server, the protocol converter, the bay layer network switch group, and the communication management unit via a first Ethernet cable, and the second station control layer network switch is connected to the other end of the first main transformer protection and control panel, the second main transformer protection and control panel, the common control panel, the I-zone communication management unit, the II-zone communication management unit, the server, the protocol converter, the bay layer network switch group, and the communication management unit via a second Ethernet cable.

[0015] Optionally, the bay-layer network switch group includes a first bay-layer network switch and a second bay-layer network switch; the first bay-layer network switch is connected to the first incoming cabinet, the first main transformer incoming cabinet, the first PT cabinet, the section cabinet, the second PT cabinet, the second main transformer incoming cabinet, the second incoming cabinet, the first section incoming cabinet, the first section PT cabinet, the first section transformer outgoing cabinet, the first motor outgoing cabinet, the first frequency converter soft start outgoing cabinet, the busbar lifting isolation cabinet, the bus tie cabinet, the second frequency converter soft start outgoing cabinet, the second motor outgoing cabinet, the second section transformer outgoing cabinet, and the second section PT cabinet. One end of the second-section incoming line cabinet is connected via a third Ethernet cable. The second bay layer network switch is connected to the other end of the first incoming line cabinet, the first main transformer incoming line cabinet, the first PT cabinet, the section cabinet, the second PT cabinet, the second main transformer incoming line cabinet, the second incoming line cabinet, the first section incoming line cabinet, the first section PT cabinet, the first section transformer outgoing line cabinet, the first motor outgoing line cabinet, the first frequency converter soft start outgoing line cabinet, the busbar lifting isolation cabinet, the bus tie cabinet, the second frequency converter soft start outgoing line cabinet, the second motor outgoing line cabinet, the second section transformer outgoing line cabinet, the second section PT cabinet, and the second section incoming line cabinet via a fourth Ethernet cable.

[0016] This utility model provides a substation microcomputer integrated automation system, including a high / low voltage front-end switch group, a waveform recording network switch, an energy network switch, a Zone I communication management unit, a Zone II communication management unit, a server, an energy collector, a station control layer network switch group, a 35kV panel protection subsystem, a 35kV switchgear protection subsystem, a 10kV switchgear protection subsystem, a low-voltage monitoring subsystem, a protocol converter, and a bay layer network switch group. The Zone I and Zone II communication management units are in dual-machine hot standby mode, ensuring that if the Zone I communication management unit fails, the other unit can operate promptly, providing a human-machine interface for substation operation, enabling functions such as managing and controlling bay layer equipment, protecting equipment and lines, and measuring and controlling energy data. Even in the event of station control layer or station control layer network failure, it can still independently perform local monitoring functions for bay layer equipment, enhancing the safety and stability of substation operation and reducing operation and maintenance costs.

[0017] Other features and advantages disclosed in this utility model will be described in detail in the following detailed description section. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This utility model provides a structural schematic diagram of a substation microcomputer integrated automation system. Detailed Implementation

[0020] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] See Figure 1 This is a schematic diagram of the structure of a substation microcomputer integrated automation system, provided as an exemplary embodiment of the present invention. The system includes: a high / low voltage front-end switch group, a waveform recording network switch, an energy network switch, a zone I communication management unit, a zone II communication management unit, a server, an energy collector, a station control layer network switch group, a 35kV panel protection subsystem, a 35kV switchgear protection subsystem, a 10kV switchgear protection subsystem, a low voltage monitoring subsystem, a protocol converter, and a bay layer network switch group.

[0022] The high / low voltage front-end switch group is connected to one end of the Zone I communication management unit; the waveform recording network switch is connected to one end of the Zone II communication management unit; the power energy network switch is connected to one end of the power energy collector; the 35kV panel protection subsystem is connected to the station control layer network switch group; the server is connected to the station control layer network switch group; the other end of the Zone I communication management unit is connected to the station control layer network switch group; the other end of the Zone II communication management unit is connected to the station control layer network switch group; the low voltage monitoring subsystem is connected to the station control layer network switch group; one end of the protocol converter is connected to the station control layer network switch group; the protocol converter... The other end of the converter is connected to the 35kV switchgear protection subsystem and the 10kV switchgear protection subsystem. The station control layer network switch group is connected to the bay layer network switch group, the 35kV switchgear protection subsystem is connected to the bay layer network switch group, the 10kV switchgear protection subsystem is connected to the bay layer network switch group, the 35kV panel protection subsystem is connected to the 35kV switchgear protection subsystem, and the 35kV panel protection subsystem is connected to the 10kV switchgear protection subsystem. The other end of the power acquisition device is connected to the 35kV switchgear protection subsystem and the 10kV switchgear protection subsystem. The 35kV switchgear protection subsystem, the 10kV switchgear protection subsystem, the 35kV panel protection subsystem, and the low-voltage monitoring subsystem are all connected to each other through the station control layer network switch group and Ethernet cables.

[0023] Specifically, in this embodiment of the present invention, a substation microcomputer integrated automation system is provided. The system consists of two layers of equipment: a station control layer and a bay layer, which are connected by a hierarchical network system. The station control layer equipment includes high / low voltage front-end switch groups, waveform recording network switches, power grid switches, Zone I communication management units, Zone II communication management units, servers, power data acquisition units, station control layer network switch groups, 35kV panel protection subsystems, low-voltage monitoring subsystems, and protocol converters. The Zone I and Zone II communication management units are dual-machine hot standby, ensuring that if one communication management unit fails, the other can operate promptly, guaranteeing system safety. It provides a human-machine interface for station operation, enabling management and control of bay layer equipment, protection of equipment and lines, and measurement and control of power data, forming a station-wide monitoring system. It also allows communication with remote monitoring and dispatching systems. Furthermore, a time synchronization device and printer can be added to the station control layer for real-time display and printing of data charts. The bay layer consists of a 35kV switchgear protection subsystem, a 10kV switchgear protection subsystem, and bay layer network switch groups. Even in the event of station control layer or network failure, it can still independently perform local monitoring of bay layer equipment, enhancing the safety and stability of substation operation and reducing operation and maintenance costs.

[0024] The 35kV panel protection subsystem includes a first main transformer protection and control panel, a second main transformer protection and control panel, and a common control panel. The first main transformer protection and control panel is connected to the station control layer network switch group, the second main transformer protection and control panel is connected to the station control layer network switch group, and the common control panel is connected to the station control layer network switch group.

[0025] The first and second main transformer protection and control panels can provide differential protection, backup protection and control, and main body protection. The common control panel can provide common control to prevent damage to transformers and other equipment.

[0026] The 35kV switchgear protection subsystem includes a first incoming line cabinet, a first main transformer incoming line cabinet, a first PT cabinet, a section cabinet, a second PT cabinet, a second main transformer incoming line cabinet, and a second incoming line cabinet. All of these cabinets are connected to the bay-level network switch group. The smart meters in the first, first, second, and second incoming line cabinets are connected to the energy collector. The microcomputer harmonic elimination devices in the first and second PT cabinets are connected to the protocol converter. The first, first, and second incoming line cabinets are also connected to the 35kV panel protection subsystem.

[0027] The 10kV switchgear protection subsystem includes an incoming line cabinet, a PT cabinet, a transformer outgoing line cabinet, a first motor outgoing line cabinet, a first frequency converter soft starter outgoing line cabinet, a busbar lifting isolation cabinet, a bus tie cabinet, a second frequency converter soft starter outgoing line cabinet, a second motor outgoing line cabinet, two transformer outgoing line cabinets, two PT cabinets, and two incoming line cabinets. All three cabinets—the incoming line cabinet, the PT cabinet, the transformer outgoing line cabinet, the first motor outgoing line cabinet, the first frequency converter soft starter outgoing line cabinet, the busbar lifting isolation cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing line cabinet, the second motor outgoing line cabinet, the second transformer outgoing line cabinet, the second PT cabinet, and the second incoming line cabinet—are connected to the bay-level network switch group. The incoming line cabinet... The smart meters in the first-stage transformer outgoing cabinet, the first motor outgoing cabinet, the first frequency converter soft starter outgoing cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing cabinet, the second motor outgoing cabinet, the second-stage transformer outgoing cabinet, and the second-stage incoming cabinet are all connected to the energy collector. The microcomputer harmonic elimination devices in the first-stage PT cabinet and the second-stage PT cabinet are connected to the protocol converter. The first-stage incoming cabinet, the first-stage PT cabinet, the first-stage transformer outgoing cabinet, the first motor outgoing cabinet, the first frequency converter soft starter outgoing cabinet, the bus lift isolation cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing cabinet, the second motor outgoing cabinet, the second-stage transformer outgoing cabinet, the second-stage PT cabinet, and the second-stage incoming cabinet are connected to the 35kV panel protection subsystem.

[0028] For example, the operation of the 35kV switchgear protection subsystem and the 10kV switchgear protection subsystem is controlled by a bay-level network switch group, data from smart meters is collected by an energy collector, and the communication protocol of the microcomputer harmonic elimination device is converted by a protocol converter.

[0029] The low-voltage monitoring subsystem includes: a communication management unit, a DC power supply unit, intelligent devices, motor protectors, a low-voltage fast switching device, a USP device, and a transformer monitoring device. The DC power supply unit, the USP device, the intelligent devices, the low-voltage fast switching device, the motor protector, and the transformer monitoring device are all connected to the communication management unit.

[0030] In this low-voltage monitoring subsystem, the communication management unit is used to organize and summarize communication data and send it to the upper-level system in real time to complete remote signaling and telemetry functions. The DC power supply is used to provide power for equipment protection and operation. The motor protector is used to provide protection and control when the motor fails. The low-voltage fast switching device is used to switch between the working power supply and the backup power supply. The USP device is used as an energy storage device when the mains power fails. The transformer monitoring device is used to collect and analyze various data of the transformer.

[0031] The protocol converter is connected to the station control layer network switch group via an RS485 bus. The power collector is connected to the smart meter via an RS485 bus. The DC power supply is connected to the communication management unit via an RS485 bus. The USP device is connected to the communication management unit via an RS485 bus. The smart device is connected to the communication management unit via an RS485 bus. The low-voltage fast switching device is connected to the communication management unit via an RS485 bus. The motor protector is connected to the communication management unit via an RS485 bus. The transformer monitoring device is connected to the communication management unit via an RS485 bus.

[0032] The RS485 bus connection is used because of its high communication speed and stable operation, which is conducive to fast and secure data transmission.

[0033] The high / low voltage front-end switch group includes a first high / low voltage front-end switch and a second high / low voltage front-end switch; both the first high / low voltage front-end switch and the second high / low voltage front-end switch are connected to the Zone I communication management unit via optical fiber.

[0034] This high / low voltage front-end switch is used to transmit the data collected by the I zone communication management unit; fiber optic cables are low in cost and support extremely high bandwidth and speed, resulting in fast transmission rates.

[0035] The station control layer network switch group includes a first station control layer network switch, a second station control layer network switch, a third station control layer network switch, and a fourth station control layer network switch. The first station control layer network switch and the third station control layer network switch are connected via a first Ethernet cable, and the second station control layer network switch and the fourth station control layer network switch are connected via a second Ethernet cable. One end of the first station control layer network switch is connected to one of the following devices: the first main transformer protection and control panel, the second main transformer protection and control panel, the common control panel, the I-zone communication management unit, the II-zone communication management unit, the server, the protocol converter, the bay layer network switch group, and the communication management unit, via a first Ethernet cable. The other end of the second station control layer network switch is connected to the following devices: the first main transformer protection and control panel, the second main transformer protection and control panel, the common control panel, the I-zone communication management unit, the II-zone communication management unit, the server, the protocol converter, the bay layer network switch group, and the communication management unit, via a second Ethernet cable.

[0036] This bay-level network switch group includes a first bay-level network switch and a second bay-level network switch; the first bay-level network switch is connected to the first incoming line cabinet, the first main transformer incoming line cabinet, the first PT cabinet, the section cabinet, the second PT cabinet, the second main transformer incoming line cabinet, the second incoming line cabinet, the first section incoming line cabinet, the first section PT cabinet, the first section transformer outgoing line cabinet, the first motor outgoing line cabinet, the first frequency converter soft start outgoing line cabinet, the busbar lifting isolation cabinet, the bus tie cabinet, the second frequency converter soft start outgoing line cabinet, the second motor outgoing line cabinet, the second section transformer outgoing line cabinet, the second section PT cabinet, and the second section... One end of the incoming line cabinet is connected via a third Ethernet cable. The second bay layer network switch is connected to the other end of the first incoming line cabinet, the first main transformer incoming line cabinet, the first PT cabinet, the section cabinet, the second PT cabinet, the second main transformer incoming line cabinet, the second incoming line cabinet, the first section incoming line cabinet, the first section PT cabinet, the first section transformer outgoing line cabinet, the first motor outgoing line cabinet, the first frequency converter soft start outgoing line cabinet, the busbar lifting isolation cabinet, the bus tie cabinet, the second frequency converter soft start outgoing line cabinet, the second motor outgoing line cabinet, the second section transformer outgoing line cabinet, the second section PT cabinet, and the second section incoming line cabinet via a fourth Ethernet cable.

[0037] The station control layer network switch group and the bay layer network switch group collect real-time data information from the substation through the network, continuously refresh the real-time database, and periodically transfer the data to the historical data record database; send the data information to the dispatching terminal as needed; and accept grid dispatching control and regulation.

[0038] In summary, this utility model provides a substation microcomputer-based integrated automation system, including a high / low voltage front-end switch group, a waveform recording network switch, an energy network switch, a Zone I communication management unit, a Zone II communication management unit, a server, an energy collector, a station control layer network switch group, a 35kV panel protection subsystem, a 35kV switchgear protection subsystem, a 10kV switchgear protection subsystem, a low-voltage monitoring subsystem, a protocol converter, and a bay layer network switch group. The Zone I and Zone II communication management units are in dual-machine hot standby mode, ensuring that if the Zone I communication management unit fails, the other unit can operate promptly, providing a human-machine interface for substation operation. This enables functions such as managing and controlling bay layer equipment, protecting equipment and lines, and measuring and controlling energy data, forming a station-wide monitoring system and communicating with remote monitoring and dispatching systems. Even in the event of station control layer or station control layer network failure, it can still independently complete the monitoring function of bay layer equipment, enhancing the safety and stability of substation operation and reducing operation and maintenance costs. Data from smart meters is collected via an energy harvester, and the communication protocol of the microcomputer harmonic suppression device is converted using a protocol converter. The station control layer network switch group and the bay layer network switch group aggregate real-time data from the substation via the network, continuously updating the real-time database and periodically transferring data to the historical data record database; data is sent to the dispatching terminal as needed; and the system accepts grid dispatching control and regulation.

[0039] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A substation microcomputer-based integrated automation system, characterized in that, include: High / low voltage front-end switch group, waveform recording network switch, power energy network switch, Zone I communication management unit, Zone II communication management unit, server, power energy collector, station control layer network switch group, 35kV panel protection subsystem, 35kV switch cabinet protection subsystem, 10kV switch cabinet protection subsystem, low voltage monitoring subsystem, protocol converter, bay layer network switch group; The high / low voltage front-end switch group is connected to one end of the Zone I communication management unit; the waveform recording network switch is connected to one end of the Zone II communication management unit; the power energy network switch is connected to one end of the power energy collector; the 35kV panel protection subsystem is connected to the station control layer network switch group; the server is connected to the station control layer network switch group; the other end of the Zone I communication management unit is connected to the station control layer network switch group; the other end of the Zone II communication management unit is connected to the station control layer network switch group; the low-voltage monitoring subsystem is connected to the station control layer network switch group; and one end of the protocol converter is connected to the station control layer network switch group. The other end of the protocol converter is connected to the 35kV switchgear protection subsystem and the 10kV switchgear protection subsystem. The station control layer network switch group is connected to the bay layer network switch group. The 35kV switchgear protection subsystem is connected to the bay layer network switch group. The 10kV switchgear protection subsystem is connected to the bay layer network switch group. The 35kV panel protection subsystem is connected to the 35kV switchgear protection subsystem. The 35kV panel protection subsystem is connected to the 10kV switchgear protection subsystem. The other end of the power acquisition device is connected to the 35kV switchgear protection subsystem and the 10kV switchgear protection subsystem. The 35kV panel protection subsystem includes a first main transformer protection and control panel, a second main transformer protection and control panel, and a common control panel; the first main transformer protection and control panel is connected to the station control layer network switch group, the second main transformer protection and control panel is connected to the station control layer network switch group, and the common control panel is connected to the station control layer network switch group.

2. The substation microcomputer integrated automation system according to claim 1, characterized in that, The 35kV switchgear protection subsystem includes a first incoming line cabinet, a first main transformer incoming line cabinet, a first PT cabinet, a sectionalizing cabinet, a second PT cabinet, a second main transformer incoming line cabinet, and a second incoming line cabinet. All of these cabinets are connected to the station control layer network switch group. The smart meters in these cabinets are connected to the energy collector. The microcomputer harmonic elimination devices in the first and second PT cabinets are connected to the protocol converter. All of these cabinets are connected to the 35kV panel protection subsystem.

3. The substation microcomputer integrated automation system according to claim 2, characterized in that, The 10kV switchgear protection subsystem includes an incoming line cabinet, a PT cabinet, a transformer outgoing line cabinet, a first motor outgoing line cabinet, a first frequency converter soft starter outgoing line cabinet, a busbar lifting isolation cabinet, a bus tie cabinet, a second frequency converter soft starter outgoing line cabinet, a second motor outgoing line cabinet, two transformer outgoing line cabinets, two PT cabinets, and two incoming line cabinets. All of these are connected to the bay-level network switch group. The smart meters in the first transformer outgoing cabinet, the first motor outgoing cabinet, the first frequency converter soft starter outgoing cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing cabinet, the second motor outgoing cabinet, the second transformer outgoing cabinet, and the second incoming cabinet are all connected to the energy collector. The microcomputer harmonic elimination devices of the first PT cabinet and the second PT cabinet are connected to the protocol converter. The first incoming cabinet, the first PT cabinet, the first transformer outgoing cabinet, the first motor outgoing cabinet, the first frequency converter soft starter outgoing cabinet, the bus lift isolation cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing cabinet, the second motor outgoing cabinet, the second transformer outgoing cabinet, the second PT cabinet, and the second incoming cabinet are connected to the 35kV panel protection subsystem.

4. A substation microcomputer integrated automation system according to claim 2, characterized in that, The low-voltage monitoring subsystem includes: a communication management unit, a DC power supply unit, an intelligent device, a motor protector, a low-voltage fast switching device, a USP device, and a transformer monitoring device; the DC power supply unit is communicatively connected to the communication management unit, the USP device is communicatively connected to the communication management unit, the intelligent device is communicatively connected to the communication management unit, the low-voltage fast switching device is communicatively connected to the communication management unit, the motor protector is communicatively connected to the communication management unit, and the transformer monitoring device is communicatively connected to the communication management unit.

5. A substation microcomputer integrated automation system according to claim 1, characterized in that, The 35kV switchgear protection subsystem, 10kV switchgear protection subsystem, 35kV panel protection subsystem, and low-voltage monitoring subsystem are all connected through a station control layer network switch group and Ethernet cables.

6. A substation microcomputer integrated automation system according to claim 4, characterized in that, The protocol converter is connected to the station control layer network switch group via an RS485 bus; the energy collector is connected to the smart meter via an RS485 bus; the DC power supply is connected to the communication management unit via an RS485 bus; the USP device is connected to the communication management unit via an RS485 bus; the smart device is connected to the communication management unit via an RS485 bus; the low-voltage fast switching device is connected to the communication management unit via an RS485 bus; the motor protector is connected to the communication management unit via an RS485 bus; and the transformer monitoring device is connected to the communication management unit via an RS485 bus.

7. A substation microcomputer integrated automation system according to claim 1, characterized in that, The high / low voltage front-end switch group includes a first high / low voltage front-end switch and a second high / low voltage front-end switch; both the first high / low voltage front-end switch and the second high / low voltage front-end switch are connected to the I-zone communication management unit via optical fiber.

8. A substation microcomputer integrated automation system according to claim 1, characterized in that, The station control layer network switch group includes a first station control layer network switch, a second station control layer network switch, a third station control layer network switch, and a fourth station control layer network switch. The first station control layer network switch and the third station control layer network switch are connected via a first Ethernet cable, and the second station control layer network switch and the fourth station control layer network switch are connected via a second Ethernet cable. The first station control layer network switch is connected to one end of the first main transformer protection and control panel, the second main transformer protection and control panel, the common control panel, the I-zone communication management unit, the II-zone communication management unit, the server, the protocol converter, the bay layer network switch group, and the communication management unit via a first Ethernet cable. The second station control layer network switch is connected to the other end of the first main transformer protection and control panel, the second main transformer protection and control panel, the common control panel, the I-zone communication management unit, the II-zone communication management unit, the server, the protocol converter, the bay layer network switch group, and the communication management unit via a second Ethernet cable.

9. A substation microcomputer integrated automation system according to claim 3, characterized in that, The bay-layer network switch group includes a first bay-layer network switch and a second bay-layer network switch; the first bay-layer network switch is connected to the first incoming line cabinet, the first main transformer incoming line cabinet, the first PT cabinet, the section cabinet, the second PT cabinet, the second main transformer incoming line cabinet, the second incoming line cabinet, the first section incoming line cabinet, the first section PT cabinet, the first section transformer outgoing line cabinet, the first motor outgoing line cabinet, the first frequency converter soft start outgoing line cabinet, the busbar lifting isolation cabinet, the bus tie cabinet, the second frequency converter soft start outgoing line cabinet, the second motor outgoing line cabinet, the second section transformer outgoing line cabinet, the second section PT cabinet, and the second section... One end of the incoming line cabinet is connected via a third Ethernet cable, and the other end of the second bay layer network switch is connected via a fourth Ethernet cable to the first incoming line cabinet, the first main transformer incoming line cabinet, the first PT cabinet, the section cabinet, the second PT cabinet, the second main transformer incoming line cabinet, the second incoming line cabinet, the first section incoming line cabinet, the first section PT cabinet, the first section transformer outgoing line cabinet, the first motor outgoing line cabinet, the first frequency converter soft starter outgoing line cabinet, the busbar lifting isolation cabinet, the bus tie cabinet, the second frequency converter soft starter outgoing line cabinet, the second motor outgoing line cabinet, the second section transformer outgoing line cabinet, the second section PT cabinet, and the second section incoming line cabinet.

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