110 kilovolt transformer substation based on digital intelligence and green low carbon

Abstract

The invention relates to a 110 kilovolt transformer substation based on digital intelligence, green and low carbon. The 110 kilovolt transformer substation comprises primary electrical equipment, secondary electrical equipment and a transformer substation building structure. The primary electrical equipment comprises a main transformer, an indoor GIS power distribution device, a switch cabinet power distribution device and a low-voltage reactive power compensation device; the secondary electrical equipment comprises a monitoring system and an intelligent auxiliary monitoring system; the monitoring system comprises an equipment monitoring network and an equipment state judgment system; the intelligent auxiliary monitoring system comprises a primary equipment on-line monitoring subsystem, a secondary system on-line monitoring subsystem, a fire fighting monitoring subsystem, a safety defense monitoring subsystem, a power environment monitoring subsystem and an intelligent patrol subsystem. The transformer substation building structure comprises an enclosure wall, a floor, doors and windows, lighting equipment, ventilation equipment and noise reduction equipment. Compared with the prior art, all devices are comprehensively and accurately monitored, and the digital intelligent effect is achieved; consumables can be reduced, the assembly efficiency is improved, and the green and low-carbon effects are achieved.

Description

Technical Field

[0001] The present invention relates to the field of 110 kV substation, and in particular to a 110 kV substation based on digital intelligence and green and low carbon. Background Art

[0002] 110 kV substation is a high voltage substation used to convert high voltage electrical energy into low voltage electrical energy. Its main purpose is to distribute electricity from the high voltage transmission grid to the low voltage grid and supply electricity to urban, rural and industrial areas.

[0003] The existing 110 kV substation includes transformers, secondary equipment rooms, GIS rooms, power distribution equipment, energy storage equipment, secondary equipment, etc. Secondary equipment is mostly arranged in a centralized manner, that is, protection and control devices, integrated monitoring systems, integrated power supplies, and communication equipment are all arranged in the secondary equipment room.

[0004] On the one hand, the status information of each device in the 110 kV substation is particularly important and directly affects the reliability of the substation. The existing solution directly controls according to the status information sent by the device itself, but there are situations where the actual status is different. For example, the circuit breaker status is displayed as closed, but it is actually blocked during the closing process and is not completely closed, resulting in a control failure in the substation;

[0005] On the other hand, the existing monitoring of 110 kV substations is mostly limited to the collection and monitoring of basic data such as temperature, oil temperature, and current, which cannot achieve comprehensive detection of the substation as a whole and improve its safe operation level;

[0006] In addition, most of the existing 110 kV substations are general concrete building structures, which have hidden dangers in fire prevention, air tightness, pipeline safety and noise reduction performance. Summary of the invention

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a 110 kV substation based on digital intelligence and green and low-carbon, which can realize comprehensive and accurate monitoring of various equipment and has a green and low-carbon structure.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A 110 kV substation based on digital intelligence and green low-carbon, including primary electrical equipment, secondary electrical equipment and substation building structure;

[0010] The primary electrical equipment includes a main transformer, an indoor GIS power distribution device, a switch cabinet power distribution device and a low-voltage reactive power compensation device. The main transformer is a three-phase oil-immersed on-load transformer, the switch cabinet power distribution device is an air-insulated switch cabinet device, and the low-voltage reactive power compensation device includes a capacitor connected to the main transformer and an SVG device;

[0011] The secondary electrical equipment includes a monitoring system and an intelligent auxiliary monitoring system. The monitoring system includes an equipment monitoring network and an equipment status judgment system for monitoring the status of substation equipment. The intelligent auxiliary monitoring system includes:

[0012] The primary equipment online monitoring subsystem is used to monitor oil temperature and oil level, core clamp grounding current, arrester leakage current, insulating gas density and switch contact temperature.

[0013] The secondary system online monitoring subsystem is used to collect the status data of secondary equipment, realize online monitoring of secondary equipment status, network message analysis, online monitoring of secondary virtual circuits, online monitoring of process layer optical fiber circuits and intelligent diagnosis of secondary circuit faults;

[0014] Fire monitoring subsystem, used to detect fire signals in the substation and issue alarm information;

[0015] Security defense monitoring subsystem, used to deploy security in various areas of the substation;

[0016] Power environment monitoring subsystem, used to collect and upload substation operating environment data;

[0017] Intelligent patrol subsystem, used for all-weather video surveillance of the substation's electrical equipment, installation location and surrounding environment;

[0018] The substation building structure includes enclosure walls, floor slabs, roof panels, doors and windows, lighting equipment, electrical pipelines, ventilation equipment and noise reduction equipment.

[0019] The exterior walls of the enclosure wall are integrated aluminum-magnesium-manganese composite exterior wall panels, the interior partition walls are steel structure frame filling walls, and the supporting parts are steel structure columns and steel structure beams;

[0020] The floor slab adopts a cast-in-place reinforced concrete slab with a corrugated steel plate as the bottom form;

[0021] The roof panel is a cast-in-place reinforced concrete roof with a corrugated steel plate as the base membrane;

[0022] The doors and windows include an outer door, an inner door and an outer window, the outer door is a color-coated steel door, the inner door is a fireproof door, and the outer window is a reinforced glass fiber polyurethane outer window;

[0023] The lighting device is an LED lamp;

[0024] The electrical pipelines are laid in an open manner, and the pipes are made of hot-dip galvanized SC steel pipes;

[0025] The ventilation equipment includes a fan;

[0026] The noise reduction device includes a sound absorbing material integrated on the inner wall of the main transformer room.

[0027] Furthermore, the equipment status judgment system includes a monitoring host and an intelligent anti-error host. The monitoring host and the intelligent anti-error host are both provided with corresponding and independent equipment status monitoring and anti-error logic to form a double confirmation anti-error logic. The main judgment criterion of the double confirmation anti-error logic is the dual position information of the switch contacts of the equipment, and the auxiliary judgment criterion is the voltage and current telemetry information of the circuit where the equipment is located, the electricity information fed back by the energized display device, or the position status information fed back by the equipment status sensor.

[0028] Further, the double confirmation error prevention logic includes a circuit breaker double confirmation criterion and an isolating switch double confirmation criterion;

[0029] The main criterion of the circuit breaker double confirmation criterion is the closed and open dual position telemetering information of the circuit breaker; the corresponding auxiliary criterion is the three-phase current and voltage telemetering information;

[0030] The main criterion of the dual confirmation criterion of the isolating switch is the auxiliary contacts of the isolating switch in the closed position and the open position; the corresponding auxiliary criterion is the induction information of the micro switch installed in the open and closed positions of the isolating switch.

[0031] Furthermore, the primary equipment online monitoring subsystem includes:

[0032] Transformer oil temperature and oil level digital remote transmission meter, installed on the main transformer;

[0033] The digital remote transmission meter for leakage current of the neutral point complete equipment arrester is installed on the pillar of the neutral point complete equipment arrester;

[0034] The transformer core clamp grounding current digital remote transmission meter is installed on the main transformer;

[0035] GIS insulating gas density digital remote transmission meter, installed on the GIS body;

[0036] The air-insulated switch cabinet contact temperature sensor is installed on the main transformer incoming cabinet and section cabinet contacts.

[0037] Further, the secondary system online monitoring subsystem includes a management unit and a collection unit, and the management unit is integrated by a plurality of integrated application servers;

[0038] The comprehensive application server is used to receive the message data of the acquisition unit, realize the online monitoring of the secondary equipment status, network message analysis, online monitoring of the secondary virtual circuit, online monitoring of the process layer optical fiber circuit, and intelligent diagnosis of secondary circuit faults;

[0039] The collection unit is used to collect status data, port connection status, SV / GOOSE messages and MMS messages of secondary devices;

[0040] The comprehensive application server and the collection unit communicate directly or in a network through an optical fiber interface or an RJ45 electrical Ethernet interface through a firewall.

[0041] Furthermore, the fire monitoring subsystem includes a main controller, a detector assembly, a manual alarm button and an audible and visual alarm. The main controller is connected to the detector assembly and the audible and visual alarm respectively, and is used to sense fire signals through the detector assembly when a fire occurs, so as to display fire information on the main controller and send out an alarm signal through the audible and visual alarm; the manual alarm button is connected to the audible and visual alarm, and is used to manually send out an alarm signal;

[0042] The detector assembly includes point-type temperature-sensitive smoke fire detectors arranged in cable interlayers and cable shafts, linear beam smoke detectors arranged in GIS room and power distribution device room, and cable-type linear constant-temperature fire detectors arranged in transformer room and reactor room.

[0043] Furthermore, the security defense monitoring subsystem includes a security monitoring terminal, a substation perimeter defense device and a station key area defense device, and the security monitoring terminal is respectively connected to the substation perimeter defense device and the station key area defense device;

[0044] The substation perimeter protection equipment includes a high-voltage pulse electronic fence set on the surrounding walls of the substation;

[0045] The key area prevention equipment in the station includes infrared counter-radiation sensors installed on the substation gate; infrared dual-detection detectors installed at the entrances and exits of buildings and at the windows on the first floor; long-distance infrared dual-detection detectors installed in the GIS room with a long corridor; access control systems installed at the substation entrance gate, building entrances and exits, secondary equipment room, main transformer room, GIS room, 10kV distribution device room, capacitor, and reactor room; and sound and light alarms installed around the substation wall, secondary equipment room, switch room, and GIS room.

[0046] Further, the power environment monitoring subsystem includes an environment monitoring terminal and an environment monitoring sensor device connected to the environment monitoring terminal;

[0047] The environmental monitoring sensor equipment includes temperature and humidity sensors arranged at first distances in the secondary equipment room, capacitor room, reactor room, station transformer room, and distribution device room; SF6 leakage sensors arranged at second distances in the distribution device room containing SF6 equipment; and micro-meteorological sensors configured on the roof of the secondary equipment room.

[0048] Furthermore, the outer plate of the integrated aluminum-magnesium-manganese composite exterior wall panel is an aluminum-magnesium-manganese alloy and is coated with fluorocarbon rollers; the core material of the integrated aluminum-magnesium-manganese composite exterior wall panel is rock wool; the inner plate of the integrated aluminum-magnesium-manganese composite exterior wall panel is a galvanized steel plate;

[0049] The outer side of the inner partition wall is coated with a fiber cement facing panel;

[0050] The steel structure columns and steel structure beams are both covered with fiber-reinforced silicate panels.

[0051] Furthermore, the electrical pipelines also include building electrical bridges set up in the semi-underground cable layer, the first floor corridor, and the second floor corridor for laying lighting, power and fire protection pipelines;

[0052] The main transformer adopts a separate arrangement of the main body and the radiator. The main body of the main transformer is enclosed indoors, and the wall of the enclosed room of the main transformer body adopts an integrated wall surface made of sound-absorbing material.

[0053] Compared with the prior art, the present invention has the following advantages:

[0054] The present invention configures a capacitor and an SVG device for the main transformer. The SVG device can realize a unified control logic for dynamic reactive power compensation, realize dynamic flexible voltage regulation, and support the safe and stable operation requirements of new energy access to the power grid;

[0055] For the status monitoring of substation equipment, a double confirmation error prevention logic is proposed, with the dual position information of the equipment's switch contacts as the main criterion; the voltage and current telemetry information of the equipment's circuit, the power information fed back by the live display device, or the position status information fed back by the equipment status sensor are used as auxiliary criteria, which improves the security of the equipment status data and makes the substation operation more stable and reliable;

[0056] For the primary equipment online monitoring subsystem, digital remote meters are used to achieve remote data transmission, reduce wiring harnesses, and ensure the real-time and accuracy of data;

[0057] For the secondary system online monitoring subsystem, multiple integrated application servers are set up according to regions to realize the collection, analysis and processing of message data, which greatly improves the data monitoring capability of the substation;

[0058] The fire monitoring subsystem provides the most suitable fire detectors for each power distribution area to improve the fire detection capability;

[0059] The security defense monitoring subsystem is fully deployed from two perspectives: perimeter defense and key area defense. High-voltage pulse electronic fences are used for the surrounding walls. Infrared dual-detection detectors, long-distance infrared dual-detection detectors, access control and other defense equipment are deployed in key areas of the substation.

[0060] The power environment monitoring subsystem can use environmental monitoring terminals, temperature and humidity sensors, micro-meteorological sensors, SF6 sensors and other equipment to achieve real-time collection, processing and uploading of substation operating environment data;

[0061] For the main structure of the building, the exterior walls of the building with enclosure walls are made of integrated aluminum-magnesium-manganese composite exterior wall panels, the interior partition walls are steel structure frame filling walls, and the supporting parts are steel structure columns and steel structure beams, which can be pre-manufactured and achieve fireproof effects; for doors and windows, fireproof doors and reinforced glass fiber polyurethane exterior windows are used, which have fireproof performance and good air tightness, water tightness and sound insulation performance;

[0062] In order to achieve overall noise reduction, the main transformer is set to be separated from the heat sink. The transformer body is enclosed in the room to block the leakage of its low-frequency noise. The sound-absorbing material is integrated into the wall to reduce the reverberation formed by multiple reflections of the noise in the room, and ultimately reduce its impact on the factory boundary. The radiator noise is low, less than 45dB(A);

[0063] In addition, the substation as a whole realizes an assembled structure based on prefabricated components, which is convenient and efficient to build;

[0064] On the whole, the present invention provides a 110 kV substation that can not only realize comprehensive and accurate monitoring of various equipment to achieve digital intelligent effects, but also reduce consumables, improve assembly efficiency, and achieve green and low-carbon effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic diagram of the structural framework of a 110 kV substation based on digital intelligence and green and low-carbon provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0069] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0070] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0071] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0072] Example 1

[0073] like Figure 1 As shown, this embodiment provides a 110 kV substation based on digital intelligence and green and low-carbon, including primary electrical equipment, secondary electrical equipment and a substation building structure;

[0074] The primary electrical equipment includes the main transformer, indoor GIS power distribution device, switch cabinet power distribution device and low-voltage reactive power compensation device. The main transformer is a three-phase oil-immersed on-load transformer, the switch cabinet power distribution device is an air-insulated switch cabinet device, and the low-voltage reactive power compensation device includes a capacitor connected to the main transformer and an SVG device;

[0075] Secondary electrical equipment includes monitoring system and intelligent auxiliary monitoring system. The monitoring system includes equipment monitoring network and equipment status judgment system, which are used to monitor the status of substation equipment. The intelligent auxiliary monitoring system includes:

[0076] The primary equipment online monitoring subsystem is used to monitor oil temperature and oil level, core clamp grounding current, arrester leakage current, insulating gas density and switch contact temperature.

[0077] The secondary system online monitoring subsystem is used to collect the status data of secondary equipment, realize online monitoring of secondary equipment status, network message analysis, online monitoring of secondary virtual circuits, online monitoring of process layer optical fiber circuits and intelligent diagnosis of secondary circuit faults;

[0078] Fire monitoring subsystem, used to detect fire signals in the substation and issue alarm information

[0079] Security defense monitoring subsystem, used to deploy security in various areas of the substation;

[0080] Power environment monitoring subsystem, used to collect and upload substation operating environment data;

[0081] Intelligent patrol subsystem, used for all-weather video surveillance of the substation's electrical equipment, installation location and surrounding environment;

[0082] The substation building structure includes enclosure walls, floor slabs, roof panels, doors and windows, lighting equipment, electrical pipelines, ventilation equipment and noise reduction equipment.

[0083] The exterior walls of the enclosure walls are made of integrated aluminum-magnesium-manganese composite exterior wall panels, the interior partition walls are steel structure frame infill walls, and the supporting parts are steel structure columns and steel structure beams;

[0084] The floor slab is a cast-in-place reinforced concrete slab with corrugated steel plate as the bottom form;

[0085] The roof panel is a cast-in-place reinforced concrete roof with corrugated steel plate as the base membrane;

[0086] Doors and windows include exterior doors, interior doors and exterior windows. Exterior doors are color-coated steel doors, interior doors are fireproof doors, and exterior windows are reinforced glass fiber polyurethane exterior windows.

[0087] The lighting equipment is LED lamp;

[0088] The electrical pipelines are laid openly, and the pipes are made of hot-dip galvanized SC steel pipes;

[0089] Ventilation equipment includes fans;

[0090] Noise reduction equipment includes sound absorbing materials integrated into the interior walls of the main transformer room.

[0091] The following is a detailed description of each part:

[0092] 1. Primary electrical equipment

[0093] The main primary electrical equipment selection is as follows: 110kV main transformer adopts split natural oil circulation self-cooling transformer on the upper side of the on-load tap changer; 110kV equipment adopts GIS, and the interval width is considered to be no more than 1.0m; 10kV distribution device adopts switch cabinet equipment, and the circuit breaker is vacuum type with spring operating mechanism. The interval width of 10kV main transformer incoming line, section switch and section lead cabinet is 1.0m, and the interval width of other switch cabinets is 0.8m; 10kV capacitor adopts indoor cabinet type complete equipment; 10kV SVG adopts water cooling complete equipment; 10kV grounding resistor adopts complete set of stainless steel resistor cabinet.

[0094] 1.1. The main transformer is a three-phase oil-immersed on-load transformer, 50MVA, 110±8*1.25% / 10.5 / 6.6kV, split on the upper side. The energy efficiency level is 2.

[0095] 1.2. The indoor GIS power distribution device adopts a full cable inlet and outlet mode with an interval width of 1m. In this embodiment, two busbars are constructed, and the room size is 18.6m×9.0m. The room is equipped with an I-beam hanging beam with a net height of 7.5 meters at the bottom of the beam.

[0096] This embodiment has a total of 6 110kV bays, which mainly supply power to important loads in the Lingang New Area. The 110kV bay gas chamber uses SF6 / N2 mixed gas.

[0097] 1.3. The switch cabinet power distribution device adopts air-insulated switch cabinet equipment. The interval width of 10kV main transformer incoming line, section switch and section lead cabinet is 1.0m, and the interval width of other switch cabinets is 0.8m.

[0098] 1.4. The configuration of the low voltage reactive power compensation device is as follows:

[0099] Each main transformer 10kV side capacitor is ultimately configured according to 6000kvar, but this embodiment does not configure it, and adopts indoor cabinet-type complete sets of equipment. The single capacity of the capacitor unit is 334kvar, arranged indoors, equipped with dry-type iron core series resistance, arranged on the power supply side, and the reactance rate is 5%; the capacitor adopts "Y" connection and open triangle protection.

[0100] The SVG on the 10kV side of each main transformer is ultimately configured at ±6000kvar. In this embodiment, it is configured at ±6000kvar and uses a complete set of water-cooled heat dissipation equipment.

[0101] 2. Secondary electrical equipment

[0102] The secondary electrical equipment includes a monitoring system and an intelligent auxiliary monitoring system. The monitoring system includes an equipment monitoring network and an equipment status judgment system for monitoring the status of substation equipment. The intelligent auxiliary monitoring system includes:

[0103] 2.1 Monitoring system

[0104] 2.1.1 System Network

[0105] The monitoring system consists of station control layer, interval layer, process layer equipment, as well as network and safety protection equipment. The station control layer network is divided into safety zones I, II and IV according to safety zoning. Among them, protection, monitoring and station AC and DC systems are deployed in safety zone I; auxiliary control systems such as fault recording, metering, online monitoring of primary equipment, online monitoring of secondary systems, fire monitoring, security defense monitoring, and power environment monitoring are deployed in safety zone II; intelligent patrol systems should be deployed in safety zone IV. The station control layer network adopts a dual star Ethernet network, a firewall is used between the networks of zones I and II, and the networks of safety zones II and IV are connected through forward and reverse isolation devices.

[0106] 2.1.2. One-button sequential control function

[0107] (1) Operation content

[0108] The one-button sequential control range operation of the substation involves primary and secondary equipment. The primary equipment is 10kV and 110kV circuit breakers and electric disconnectors (including electric trolleys) and electric earthing switches. The secondary equipment includes relay protection devices, safety automatic devices, and other soft pressure plates that can be remotely put in and out, and set value areas that can be remotely switched.

[0109] (2) Functional requirements

[0110] Substation one-key sequential control should realize the functions of prefabrication of operation project software, modular construction of operation tasks, automatic identification of equipment status, intelligent verification of anti-error interlocking, one-key start of operation steps, video linkage of operation process, etc. The monitoring system selects the corresponding operation tasks according to the preset procedures and anti-error strategies, automatically exports the substation operation ticket and performs the operation in sequence; based on the background of the substation automation system, accurate data collection is realized, including the position of all real-time telemetering quantities (circuit breakers, disconnectors, grounding switches, etc.) in the substation, all real-time analog quantities (current, voltage, power, etc.), and other auxiliary status sensor information and other multiple judgment criteria, to determine and confirm the real-time status information of the equipment until all steps are completed; adopt the double verification of anti-error and double confirmation mechanism of equipment status to ensure safe and reliable operation control.

[0111] (3) Overall plan

[0112] The one-key sequential control function of the substation is implemented at the station end and deployed in the safety zone I. It is implemented by the station control layer equipment (monitoring host, intelligent anti-error host, zone I data communication gateway), the bay layer equipment (measurement and control device) and the primary equipment sensor. The monitoring host implements the relevant functions, and performs double verification of anti-error logic with the intelligent anti-error host. The control / centralized control station uses the DL / T 634.5104 communication protocol through the zone I data communication gateway to realize the call of the one-key sequential control function of the substation.

[0113] In the double confirmation error prevention logic, the confirmation of the position status of the circuit breaker and the switch should at least include the main and auxiliary dual judgment criteria of different sources or different principles. The main judgment criteria should be the dual position information of the auxiliary switch contacts of the circuit breaker and the disconnector, and the auxiliary judgment criteria should be the voltage and current telemetry information of the circuit where the equipment is located, the power information fed back by the live display device, or the position status information fed back by the equipment status sensor.

[0114] (4) Equipment configuration

[0115] 1) Station control layer equipment

[0116] Configure 1 set of intelligent anti-error host, and deploy 1 set of intelligent anti-error function modules on the monitoring host and 1 set on the intelligent anti-error host.

[0117] The anti-error logic of the monitoring host and the anti-error logic of the intelligent anti-error host should be independent of each other, and the two sets of anti-error logics jointly realize the anti-error dual verification function.

[0118] The one-key sequential control function is realized by the one-key sequential control function software built into the monitoring system host.

[0119] The one-button sequential control data communication function is integrated by the monitoring system zone I data communication gateway.

[0120] The control / centralized control station calls the one-key sequential control function of the station through the data communication gateway in zone I of the station, and receives relevant information about the execution of the one-key sequential control. In this embodiment, the station control layer of this station needs to add 1 anti-error host and 4 public measurement and control devices, and a total of 2 screens are arranged in the secondary equipment room.

[0121] 2) Interval layer equipment

[0122] The main judgment criterion and auxiliary judgment criterion information are connected to the process layer equipment of this interval, and uploaded to the station control layer of the monitoring system through the measurement and control device of this interval; when there is no process layer equipment and it cannot be connected, it is directly connected to the measurement and control device of this interval and uploaded to the station control layer of the monitoring system.

[0123] Configure public measurement and control devices according to voltage levels, and access auxiliary judgment location information.

[0124] (5) Equipment double confirmation criteria

[0125] 1) Circuit breaker double confirmation criteria

[0126] The main criterion for double confirmation of the circuit breaker adopts the closed and open dual position telemetering information of the circuit breaker. The auxiliary criterion adopts the three-phase current and voltage telemetry information. The auxiliary criterion for the voltage of each bay of the 110kV voltage level takes the busbar and the three-phase voltage transformer of each bay, so this embodiment adds the three-phase PT of the 110kV busbar bay and the main transformer bay.

[0127] The auxiliary control criteria for the main transformer 10kV incoming line bay, 10kV line and other interval circuit breakers adopt "busbar three-phase PT and interval three-phase energized display device".

[0128] 2) Double confirmation criteria for isolating switches

[0129] Disconnectors and earthing switches (including disconnectors and earthing switches in 110kV GIS, 110kV neutral point switches, and 10kV switch cabinet earthing switches): The main judgment criteria are the closed and open double-position auxiliary contacts of disconnectors and earthing switches.

[0130] The auxiliary judgment criterion adopts a micro switch, and one micro switch is installed at the opening and closing positions. Two micro switches are installed for the three-position switch, the isolating switch, and the grounding switch, so all the isolating switches and grounding switches of the 110kV GIS in this embodiment need to be installed with micro switches.

[0131] Switch cabinet electric trolley: In this embodiment 10, the switch cabinet trolley adopts an electric trolley. The main double confirmation criterion of the switch cabinet electric trolley adopts dual-position auxiliary contacts of working position and test position, and the auxiliary criterion adopts sensor position information (micro switches are adopted, and one micro switch is installed at the working position and test position of the switch cabinet electric trolley respectively).

[0132] 2.2 Intelligent auxiliary monitoring system

[0133] 2.2.1 System composition and functions

[0134] Set up a comprehensive application server and an intelligent auxiliary control system. The intelligent auxiliary control system sets up a background host and deploys it in the safety zone II. The background host exchanges information with the intelligent patrol subsystem of zone IV through the comprehensive application server to achieve standard access, monitoring control and intelligent linkage of auxiliary equipment such as security, fire protection, video, environment, and primary equipment status monitoring in the station, and realize remote transmission to the main station.

[0135] 2.2.2. Primary equipment online monitoring subsystem

[0136] The online monitoring subsystem monitors the oil temperature and oil level, core clamp grounding current, arrester leakage current, insulating gas density, switch contact temperature, and other functions.

[0137] The online status monitoring front-end equipment collects the status information of each primary device in real time, and transmits it point-to-point to the primary device online monitoring IED configured on site. The IED uses the DL / T 860 protocol to integrate the data and send it to the auxiliary control system backend. The front-end hardware equipment is integrated by the primary device.

[0138] 1) Transformer oil temperature and oil level digital remote meter

[0139] The digital remote transmission meter (monitoring device) for oil temperature and oil level of transformer is installed on the main transformer body, in the same installation position as the original monitoring meter, replacing the original meter of the main transformer (the number of digital remote transmission meters is the same as the original ordinary number, each main transformer is equipped with 1 digital remote transmission meter for oil level of the main body, 2 digital remote transmission meters for oil surface temperature, and 1 digital remote transmission meter for winding temperature). It is provided as a complete set with the main transformer body.

[0140] 2) Digital remote transmission meter for leakage current of lightning arrester of neutral point complete equipment

[0141] The digital remote transmission meter (monitoring device) for the leakage current of the neutral point complete equipment arrester is installed on the pillar of the neutral point complete equipment arrester, in the same installation position as the original monitoring meter, replacing the original meter (the same number as the original). It is recommended to be installed as a complete set with the neutral point complete equipment.

[0142] 3) Transformer core clamp grounding current digital remote meter

[0143] The transformer core clamp grounding current digital remote transmission meter is installed on the main transformer body. One set is provided for each transformer. It is recommended to be provided as a set with the main transformer body.

[0144] The transformer monitoring terminal is configured according to the number of main transformers in the substation. Each main transformer is equipped with a transformer monitoring terminal. The hub and monitoring terminal are installed in the main transformer intelligent control cabinet.

[0145] Each main transformer oil temperature, oil level digital remote meter, neutral point complete equipment arrester leakage current digital remote meter and core clamp grounding current digital remote meter share a monitoring terminal.

[0146] 4) 110kV GIS insulation gas density digital remote meter

[0147] The digital remote transmission meter (pressure sensor) is installed on the GIS body, in the same position as the original monitoring meter, replacing the original meter (the same number as the original, one for each insulating air chamber). It is a complete set with the GIS body.

[0148] 110kV GIS is equipped with one monitoring terminal and four 16-port hubs. The hub and monitoring terminal are installed in the main transformer intelligent control cabinet.

[0149] 5) 10kV air-insulated switchgear contact temperature monitoring

[0150] Air-insulated switch cabinet contact temperature sensors are installed on the main transformer incoming line cabinet and section cabinet contacts, and a total of 6 sensors are configured for each side of the switch cabinet circuit breaker moving and static contacts. They are complete sets with the switch cabinet body.

[0151] Two monitoring terminals are configured according to the number of main transformer incoming line cabinets and section cabinets, and installed in the section isolation cabinet in the switch room. The monitoring device signal is received wirelessly, and the IoT node device of the power transmission and transformation equipment is used, without the need for a hub.

[0152] 2.2.3. Secondary system online monitoring subsystem

[0153] The substation secondary system online monitoring subsystem consists of a management unit and a collection unit, and the management unit functions are integrated by a comprehensive application server.

[0154] The integrated application server receives the message data from the acquisition unit and realizes the functions of online monitoring of secondary equipment status, network message analysis, online monitoring of secondary virtual circuits, online monitoring of process layer optical fiber circuits, and intelligent diagnosis of secondary circuit faults. Network analyzers are no longer configured independently in substations.

[0155] The acquisition unit should be configured according to the network to collect status data of secondary equipment such as protection devices, safety automatic devices, measurement and control devices, process layer equipment and Zone I switches, port connection status, SV / GOOSE messages and MMS messages, etc.

[0156] The integrated application server and the collection unit should communicate directly or in a network through a fiber optic interface or an RJ45 electrical Ethernet interface through a firewall.

[0157] The specific functions of the secondary system online monitoring subsystem are as follows:

[0158] (1) The online monitoring of secondary equipment status should have the function of monitoring the secondary equipment temperature, power supply voltage, the transmit / receive light intensity of the process layer port and the light intensity of the protection optical fiber longitudinal channel, and should be able to be monitored visually online.

[0159] (2) The message analysis function should include communication process analysis, network status diagnosis, message consistency check, message content analysis and abnormal situation alarm.

[0160] (3) The online monitoring of the secondary virtual circuit should be able to display detailed information when the circuit status is abnormal, such as the status of its logical link, the status of the associated soft pressure plate, and the corresponding network message status.

[0161] (4) The online monitoring of the process layer optical fiber loop should be able to locate the physical link fault based on the optical fiber port monitoring information of the device and the logical link alarm information, assist in locating the fault point or fault area, provide prompt information, and clearly mark it on this diagram.

[0162] 2.2.4 Fire monitoring subsystem

[0163] The fire monitoring subsystem consists of a main controller, various detectors, manual alarm buttons, sound and light alarms and other equipment. When a fire occurs, the detector sends the fire signal to the main controller, which can display the time and place of the fire and send out an alarm signal to realize the collection, transmission and linkage control of fire alarm information within the station.

[0164] Each room, cable mezzanine, and cable shaft shall be equipped with point-type heat-sensing and smoke-sensing fire detectors. GIS room and power distribution device room shall be equipped with linear beam smoke detectors. Transformer room, reactor room and other areas shall be equipped with cable-type linear fixed-temperature fire detectors. According to the actual needs of the substation, fire pipe network pressure transmitters and water flow transmitters shall be configured to monitor the pressure and water flow of the fire pipe network in real time.

[0165] 2.2.5 Security and defense monitoring subsystem

[0166] This station is equipped with a security defense subsystem, mainly equipped with a security monitoring terminal, which is arranged in the secondary equipment room. A two-layer defense plan is adopted: the first layer is the substation perimeter defense, and the second layer is the key area defense in the station.

[0167] The surrounding walls are equipped with high-voltage pulse electronic fences. A dual-zone host or a single-zone host is selected according to the actual situation on site. A 6-wire system is used with a defense zone of 100 meters. According to local public security prevention requirements, a defense zone of less than 70 meters can be used. The electronic fence should meet the relevant design and technical requirements of GB / T 7946-2015 and obtain certification from the local public security department.

[0168] 1-2 pairs of infrared beams are used above the gate. Infrared dual-detection detectors are installed as needed at the entrances and exits of buildings and windows on the first floor. Infrared dual-detection detectors should be installed at the entrances and exits of the distribution device room, secondary equipment room, etc.; long-distance infrared dual-detection detectors should be installed for some GIS rooms with long corridors. Access control should be installed at the substation entrance gate, building entrances and exits, secondary equipment room, main transformer room, GIS room, 10kV distribution device room, capacitor, and reactor room. For substations that need to remotely transmit alarm information to the 110 networked alarm center, 1 anti-theft alarm controller can be configured. Configure 1 emergency alarm button. Sound and light alarms should be installed around the walls, and sound and light alarms should be installed in the secondary equipment room, switch room, and GIS room.

[0169] The security monitoring terminal connects the relevant signals to the intelligent auxiliary control system within the station to meet the needs of the on-duty personnel.

[0170] 2.2.6 Power environment monitoring subsystem

[0171] This station is equipped with 1 set of power environment monitoring subsystem, mainly 1 set of environmental monitoring terminal, which is arranged in the secondary equipment room. The environmental monitoring should be able to use environmental monitoring terminal, temperature and humidity sensors, micro-meteorological sensors, SF6 sensors and other equipment to realize the real-time collection, processing and uploading of the substation's operating environment data.

[0172] In important equipment rooms such as secondary equipment rooms, capacitor rooms, reactor rooms, station transformer rooms, and distribution device rooms, one temperature and humidity sensor is installed for every 20 square meters in a single room. Distribution device rooms containing SF6 equipment, such as GIS rooms, should be equipped with one SF6 leakage sensor per interval. The air-conditioning system should have control and communication functions. The fan system should have communication functions, and the fans installed in equipment rooms with high heat generation, such as transformer rooms and reactive power compensation device rooms (other ordinary fans not used for firefighting, except axial flow fans) should have variable frequency speed control functions. A set of integrated micro-meteorological sensors is installed on the roof of the secondary equipment room to collect data such as outdoor temperature, humidity, wind speed, wind direction, air pressure, and rainfall.

[0173] 2.2.7 Intelligent patrol subsystem

[0174] This station is equipped with 1 set of intelligent patrol subsystem, with an independent patrol host, which is configured separately from the one-key sequential control video double confirmation host in the station. The system is mainly responsible for all-weather video monitoring of the main electrical equipment, installation location and surrounding environment of the entire station, and can also be linked with other subsystems for alarm to meet the safety and patrol requirements of production operation.

[0175] The camera uses the network to transmit images; the power supply is taken from the nearest maintenance box. Each camera should be equipped with an independent power adapter, and the power adapter must have lightning protection and overvoltage protection capabilities.

[0176] The camera layout should meet the requirements of substation security monitoring, equipment remote control operation auxiliary monitoring and equipment remote auxiliary patrol, and meet the requirements of control operation to equipment cold standby status auxiliary monitoring. On-site cameras are configured according to the final scale.

[0177] 2.3 Prefabricated secondary equipment

[0178] The 110kV GIS equipment in this station is used by users. The process layer equipment and the protection, measurement and control, electric energy meter and other isolation layer equipment are all placed underground in prefabricated intelligent control cabinets.

[0179] All the optical cables and control cables of the entire station are in the form of prefabricated optical cables (or pigtail cables) and prefabricated cables, which improve the efficiency and quality of on-site wiring and achieve low-carbon and environmental protection.

[0180] 3. Prefabricated buildings

[0181] 3.1 Building structure

[0182] The distribution device building adopts a prefabricated structure. The frame beams and frame columns of the steel frame main structure, the main beams and secondary beams, the secondary purlins and main purlins (or keels) of the enclosure structure, the enclosure structure and the main structure, the canopy beams and the canopy beams, and the canopy beams and the main frame columns are all connected by full bolts.

[0183] 3.2. Enclosure wall

[0184] The external wall of the power distribution building of this station adopts integrated aluminum-magnesium-manganese composite external wall panels. The external panels are 0.8 thick aluminum-magnesium-manganese alloy. The surface is fluorocarbon roller-coated. The core material is rock wool with fireproof performance of Class A (bulk density 100kg / m 3 ), the inner panel is made of 0.6 thick galvanized steel plate, and there is no decorative layer on the inner side of the exterior wall. The specific advantages are shown in Table 1.

[0185] Ground steel structure frame filling wall: light steel keel nailed with fire-resistant paper-faced gypsum board on both sides. Fire wall adopts 3X15mm+150mm (filled with 100mm thick rock wool)+3X15mm, with a fire resistance limit of not less than 3 hours and a total thickness of 240mm. Other internal partition walls adopt 3X15mm+100mm (filled with 80mm rock wool)+2X15mm, with a fire resistance limit of not less than 2 hours and a total thickness of 175mm. All internal partition walls are coated with 6 thick fiber cement veneer panels (paint-free) on the outside. The whole panels are cut in the factory and transported to the site for bonding with structural adhesive.

[0186] The steel structure columns and steel structure beams on the fire wall are covered with 32mm thick fiber reinforced silicate boards with a fire resistance limit of 3 hours. The external fiber cement veneer panels (paint-free) are consistent with the interior wall finishes; the remaining steel structure beams, external wall purlins, steel structure stairs and the bottom plates of the composite floor slabs are coated with intumescent fire retardant coatings.

[0187] Table 1 Comparison between integrated fiber cement integrated interior partition wall and light steel keel gypsum interior partition wall board

[0188]

[0189] 3.3 Floor and roof panels

[0190] The floor adopts cast-in-place reinforced concrete slab with corrugated steel plate as bottom formwork, and the roof adopts cast-in-place reinforced concrete roof with corrugated steel plate as bottom membrane.

[0191] 3.4 Doors and Windows

[0192] The exterior doors are made of colored steel doors, and the interior doors are fireproof doors. The exterior windows of air-conditioned rooms are made of reinforced glass fiber polyurethane exterior windows. The specific advantages are shown in Table 2. The hollow laminated glass is 6.76+9A+6.76 (6.76 thick laminated glass, 9mm thick air layer in the interlayer, 6.76 thick laminated glass). The wind pressure resistance performance of the exterior windows is level 3, the air tightness performance is level 6, and the water tightness performance is level 3. The heat transfer coefficient of doors and windows is not more than 2.2W / (m 2 .K). The shutters are made of aluminum alloy.

[0193] Table 2 Comparison between glass fiber reinforced polyurethane energy-saving windows and thermally-broken aluminum alloy windows

[0194]

[0195]

[0196] 3.5 Green lighting

[0197] The main transformer room, 110kV power distribution room, capacitor room, and reactor room of this station use floodlights, and the cable layer uses waterproof and moisture-proof ceiling lamps. The 110kV power distribution room, 10kV power distribution room, capacitor room, reactor room, station transformer room, fire pump room and corridor use single-ended LED lights, the maintenance passage behind the switch cabinet uses single-ended LED lights, the relay room uses cable trough lights, and the other auxiliary rooms are all illuminated by double-ended LED lights. Because this station is an unmanned substation, the outdoor public area lighting uses a light control system.

[0198] Smart lighting fixtures are used in public spaces such as the station's foyers, corridors and stairwells, which can realize intelligent microwave sensing of the human body. When a human body is detected and the ambient brightness is lower than the set condition, the lighting is turned on; when no human body is detected or the brightness is too high, the lamps are automatically turned off, meeting the requirements of green energy saving and environmental protection.

[0199] 3.6 Pipeline Laying

[0200] (1) In the semi-underground cable layer of this station, all kinds of building electrical pipelines are laid openly, and the pipes are made of hot-dip galvanized SC steel pipes.

[0201] This station is a prefabricated steel structure substation. Pipelines above ±0.00m are generally laid in concealed layout. There is no decorative layer on the inner side of the exterior wall, and the pipelines are laid in concealed layout. Hot-dip galvanized JDG fastening pipes are used. All kinds of building electrical boxes and switches should be arranged on the side of the exterior wall.

[0202] Pipes concealed on the roof or passing through the roof should be hot-dip galvanized SC steel pipes.

[0203] The wall thickness of hot-dip galvanized SC steel pipe shall not be less than 2.0mm, and the wall thickness of hot-dip galvanized JDG set pipe shall not be less than 1.6mm.

[0204] (2) The installation height of indoor lighting distribution boxes, power distribution boxes, and maintenance power boxes is 1300mm from the ground. The bottom edge of general sockets is 300mm from the ground; the center of the air conditioner and fan power sockets is 300mm horizontally away from the edge of the equipment, of which the upper fan power socket and the wall-mounted air conditioner internal unit socket should be located at the bottom of the equipment side, with the center vertically 300mm away from the bottom edge of the equipment; the bottom edge installation height of the power socket of the basement submersible pump is 1500mm from the ground on the side wall directly above the submersible pump; the bottom edge of the bathroom socket is 1800mm from the ground. The bottom edge of the panel switch is 1300mm from the ground and 200mm from the edge of the door frame.

[0205] (3) Building electrical bridges are installed in the semi-underground cable layer, the first floor corridor, and the second floor corridor for laying lighting, power, and fire-fighting pipelines.

[0206] The building electrical bridge in the cable layer is laid along the outer wall and inner partition wall. The main circuit has three-layer bridge, including one layer of W400mm×H150mm ladder frame for strong current, one layer of W400mm×H150mm ladder frame for weak current, and one layer of W400mm×H150mm for fire protection (2×W200mm×H150mm composite F2 grade metal fire-resistant trough boxes for fire-fighting strong and weak current are arranged, and the fire-resistant fire-resistant cables inside do not need to be protected by metal pipes); the secondary circuit has two-layer bridge, including one layer of W400mm×H150mm ladder frame for strong and weak current (with a fireproof partition in the middle), and one layer of W400mm×H150mm for fire protection (the requirements for the arrangement of fire-resistant trough boxes are the same as above).

[0207] The building electrical bridge in the corridor is arranged under the corridor ventilation duct and on both sides of the corridor. One side is a layer of W400mm×H150mm ladder for strong and weak electricity (with a fireproof partition in the middle), and the other side is a layer of W400mm×H150mm for fire protection (the layout requirements of the fire-resistant trough box are the same as above).

[0208] 3.7. Intelligent ventilation

[0209] The non-fire-fighting fans used in this station need to be equipped with a control box. The control circuit should have an external passive contact to realize the remote control function and be able to transmit the operating status of the fan to the background. The fan switches the operating status according to the temperature conditions.

[0210] 3.8 Auxiliary noise reduction measures

[0211] The main transformer adopts the form of separate arrangement of the main body and the radiator. The main body of the transformer is enclosed indoors, blocking the leakage of its low-frequency noise. According to the technical parameters of the general equipment of the State Grid, the transformer noise should be less than 58dB(A), and the main transformer radiator noise should be less than 45dB(A); the indoor wall of the main transformer adopts the integrated wall of sound-absorbing material to reduce the reverberation formed by multiple reflections of the noise in the room, and ultimately reduce its impact on the factory boundary; at the same time, low-noise fans and low-noise multi-connected air conditioners are selected in the HVAC design. The sound environment outside the factory boundary on the south, east and west sides of the 110kV substation implements the 4a class standard (70dB(A) during the day and 55dB(A) at night), and the sound environment outside the factory boundary on the north side implements the 1 class standard (55dB(A) during the day and 45dB(A) at night). There is no noise source at the factory boundary on the north side. After using Cadna(A) software to simulate the factory boundary noise, this station does not need to take other additional noise reduction measures to meet the environmental protection requirements.

[0212] Example 2

[0213] This embodiment is substantially the same as Embodiment 1, except that the substation in this embodiment uses prefabricated structures including prefabricated walls, prefabricated small foundations and components, and water supply and drainage structures, which are specifically described as follows.

[0214] Prefabricated fence: The station area fence adopts iron grille fence. The prefabricated wall panel adopts 100mm thick autoclaved lightweight aerated concrete board; the fence column adopts prefabricated reinforced concrete I-beam column, and the cross-sectional size should not be less than 250mm×250mm. A prefabricated cap should be set on the top of the fence.

[0215] Prefabricated small foundations and components:

[0216] Civil engineering: Standardized small prefabricated components mainly include prefabricated hydraulic components (rainwater wells, manhole covers and overflows, drainage ditch covers, etc.) and prefabricated structural components (concrete splashbacks, cable trench covers, wall cappings, etc.), which adopt precast concrete types; cable trenches and drainage pipes adopt precast concrete form.

[0217] In terms of water supply and drainage: prefabricated rainwater wells and sewage inspection wells are used, cast iron manhole covers are used, and plain concrete is used for flashing.

[0218] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A 110 kV substation based on digital intelligence and green low-carbon, characterized in that: Including primary electrical equipment, secondary electrical equipment and substation building structure; The primary electrical equipment includes a main transformer, an indoor GIS power distribution device, a switch cabinet power distribution device and a low-voltage reactive power compensation device. The main transformer is a three-phase oil-immersed on-load transformer, the switch cabinet power distribution device is an air-insulated switch cabinet device, and the low-voltage reactive power compensation device includes a capacitor connected to the main transformer and an SVG device; The secondary electrical equipment includes a monitoring system and an intelligent auxiliary monitoring system, wherein the monitoring system includes an equipment monitoring network and an equipment status judgment system, which are used to monitor the status of substation equipment; The intelligent auxiliary monitoring system includes: a primary equipment online monitoring subsystem, which is used to realize oil temperature and oil level monitoring, core clamp grounding current monitoring, arrester leakage current monitoring, insulating gas density monitoring and switch contact temperature measurement; a secondary system online monitoring subsystem, which is used to collect status data of secondary equipment, realize online monitoring of secondary equipment status, network message analysis, online monitoring of secondary virtual circuits, online monitoring of process layer optical fiber circuits and intelligent diagnosis of secondary circuit faults; a fire monitoring subsystem, which is used to detect fire signals in the substation and issue alarm information; a security defense monitoring subsystem, which is used to carry out security deployment in various areas of the substation; a power environment monitoring subsystem, which is used to collect and upload the operating environment data of the substation; an intelligent patrol subsystem, which is used to carry out all-weather video monitoring of the electrical equipment, installation site and surrounding environment of the substation; The substation building structure includes enclosure walls, floor slabs, roof panels, doors and windows, lighting equipment, electrical pipelines, ventilation equipment and noise reduction equipment. The exterior walls of the enclosure walls are integrated aluminum-magnesium-manganese composite exterior wall panels, the interior partition walls are steel structure frame filling walls, and the supporting parts are steel structure columns and steel structure beams; the floor slabs are cast-in-place reinforced concrete slabs with corrugated steel plates as bottom molds; the roof panels are cast-in-place reinforced concrete roofs with corrugated steel plates as bottom membranes; the doors and windows include exterior doors, interior doors and exterior windows, the exterior doors are color-coated steel doors, the interior doors are fireproof doors, and the exterior windows are reinforced glass fiber polyurethane exterior windows; the lighting equipment is LED lamps; the electrical pipelines are openly laid, and the pipes are hot-dip galvanized SC steel pipes; the ventilation equipment includes fans; and the noise reduction equipment includes sound-absorbing materials integrated on the interior walls of the main transformer room.

2. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The equipment status judgment system includes a monitoring host and an intelligent anti-error host. The monitoring host and the intelligent anti-error host are both provided with corresponding and independent equipment status monitoring and anti-error logic to form a double confirmation anti-error logic. The main judgment criterion of the double confirmation anti-error logic is the dual position information of the switch contacts of the equipment, and the auxiliary judgment criterion is the voltage and current telemetry information of the circuit where the equipment is located, the electricity information fed back by the energized display device, or the position status information fed back by the equipment status sensor.

3. A 110 kV substation based on digital intelligence and green low-carbon according to claim 2, characterized in that: The double confirmation error prevention logic includes a circuit breaker double confirmation criterion and a disconnector double confirmation criterion; The main criterion of the circuit breaker double confirmation criterion is the closed and open dual position telemetering information of the circuit breaker; the corresponding auxiliary criterion is the three-phase current and voltage telemetering information; The main criterion of the dual confirmation criterion of the isolating switch is the auxiliary contacts of the isolating switch in the closed position and the open position; the corresponding auxiliary criterion is the induction information of the micro switch installed in the open and closed positions of the isolating switch.

4. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The primary equipment online monitoring subsystem includes: Transformer oil temperature and oil level digital remote transmission meter, installed on the main transformer; The digital remote transmission meter for leakage current of the neutral point complete equipment arrester is installed on the pillar of the neutral point complete equipment arrester; The transformer core clamp grounding current digital remote transmission meter is installed on the main transformer; GIS insulating gas density digital remote transmission meter, installed on the GIS body; The air-insulated switch cabinet contact temperature sensor is installed on the main transformer incoming cabinet and section cabinet contacts.

5. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The secondary system online monitoring subsystem includes a management unit and a collection unit, and the management unit is integrated by multiple comprehensive application servers; The comprehensive application server is used to receive the message data of the acquisition unit, realize the online monitoring of the secondary equipment status, network message analysis, online monitoring of the secondary virtual circuit, online monitoring of the process layer optical fiber circuit, and intelligent diagnosis of secondary circuit faults; The collection unit is used to collect status data, port connection status, SV / GOOSE messages and MMS messages of secondary devices; The comprehensive application server and the collection unit communicate directly or in a network through an optical fiber interface or an RJ45 electrical Ethernet interface through a firewall.

6. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The fire monitoring subsystem includes a main controller, a detector assembly, a manual alarm button and an audible and visual alarm. The main controller is connected to the detector assembly and the audible and visual alarm respectively, and is used to sense fire signals through the detector assembly when a fire occurs, so as to display fire information on the main controller and send out an alarm signal through the audible and visual alarm; the manual alarm button is connected to the audible and visual alarm, and is used to manually send out an alarm signal; The detector assembly includes point-type temperature-sensitive smoke fire detectors arranged in cable interlayers and cable shafts, linear beam smoke detectors arranged in GIS room and power distribution device room, and cable-type linear constant-temperature fire detectors arranged in transformer room and reactor room.

7. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The security defense monitoring subsystem includes a security monitoring terminal, a substation perimeter defense device and a station key area defense device, and the security monitoring terminal is respectively connected to the substation perimeter defense device and the station key area defense device; The substation perimeter protection equipment includes a high-voltage pulse electronic fence set on the surrounding walls of the substation; The key area prevention equipment in the station includes an infrared counter-radiation sensor installed on the gate of the substation; an infrared dual-detection detector installed at the entrance and exit of the building and the window on the first floor; Long-distance infrared dual-detection detectors are installed in the GIS room with a long corridor; access control systems are installed at the substation entrance gate, building entrances and exits, secondary equipment room, main transformer room, GIS room, 10kV distribution device room, capacitor, and reactor room; sound and light alarms are installed around the substation wall, secondary equipment room, switch room, and GIS room.

8. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The power environment monitoring subsystem includes an environment monitoring terminal and an environment monitoring sensor device connected to the environment monitoring terminal; The environmental monitoring sensor equipment includes temperature and humidity sensors arranged at first distances in the secondary equipment room, capacitor room, reactor room, station transformer room, and distribution device room; SF6 leakage sensors arranged at second distances in the distribution device room containing SF6 equipment; and micro-meteorological sensors configured on the roof of the secondary equipment room.

9. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The outer plate of the integrated aluminum-magnesium-manganese composite exterior wall panel is an aluminum-magnesium-manganese alloy and is coated with fluorocarbon rollers; the core material of the integrated aluminum-magnesium-manganese composite exterior wall panel is rock wool; the inner plate of the integrated aluminum-magnesium-manganese composite exterior wall panel is a galvanized steel plate; The outer side of the inner partition wall is coated with a fiber cement facing panel; The steel structure columns and steel structure beams are both covered with fiber-reinforced silicate panels.

10. A 110 kV substation based on digital intelligence and green low-carbon according to claim 1, characterized in that: The electrical pipelines also include building electrical bridges set up in the semi-underground cable layer, the first floor corridor, and the second floor corridor for laying lighting, power and fire protection pipelines; The main transformer adopts a separate arrangement of the main body and the radiator. The main body of the main transformer is enclosed indoors, and the wall of the enclosed room of the main transformer body adopts an integrated wall surface made of sound-absorbing material.

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