CN117375062A - Intelligent control system of flexible direct-current traction substation - Google Patents
Intelligent control system of flexible direct-current traction substation Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
- H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
Abstract
The invention discloses an intelligent control system of a flexible direct-current traction substation, which relates to the technical field of urban rail transit power supply, and specifically comprises a substation station control layer and a substation spacing layer, wherein: the substation station control layer comprises: the intelligent communication controller comprises a CPU core main board, a main/standby power supply module, a DI digital quantity input module, a DO digital quantity output module, a backboard, a maintenance port, an Ethernet expansion module and a serial port expansion module. The invention provides an intelligent control system architecture of a flexible direct-current traction substation. On the basis of an integrated automation system of an urban rail transit substation, core functions such as real-time state sensing, dynamic system power flow regulation and control, clock synchronization and the like of a flexible direct-current traction power supply system are realized by utilizing equipment such as a GOOSE network, a power flow controller, an electrical parameter monitoring terminal, a clock synchronization device and the like.
Description
Technical Field
The invention relates to the technical field of urban rail transit power supply, in particular to an intelligent control system of a flexible direct current traction substation.
Background
At present, a traction transformer and a diode rectifier are combined to form a traction rectifier unit, an output direct current power supply supplies power to a traction network, and the output voltage of the traction rectifier unit can linearly decrease along with the increase of current due to impedance of the traction rectifier unit; the magnitude of the current output by the traction rectifier unit is determined by the position of the train, the running state (starting, cruising, inertia, braking) of the train, the impedance distribution of the traction network and other factors, and the traction rectifier unit does not have the function of actively regulating the output voltage and the current. Because active regulation and control on system tide are lacking, the problems that the voltage fluctuation of a traction network is large, the regenerative braking energy cannot be fully utilized, and the internal energy conservation of a power supply system is difficult exist.
The bidirectional traction unit is formed by combining a traction transformer and an IGBT converter, and has the function of actively regulating output voltage and current. The flexible DC traction power supply technology for urban rail transit utilizes a bidirectional traction unit to replace a combination of a diode traction rectifier unit and an energy feedback device, and realizes real-time and dynamic management and control of side tide of a full-line traction network through an intelligent control system, thereby improving traction power supply capacity and energy-saving benefit. The power supply system wiring schematic is shown in fig. 1 below.
The bidirectional traction unit is gradually applied and mature, but an intelligent control system for realizing cooperative control among different bidirectional traction units is not formed, a flexible direct current traction power supply system is not really formed, the core function of a flexible direct current power supply network cannot be realized, and the advantages of the flexible direct current traction power supply system cannot be verified and exerted.
In summary, the technology of the intelligent control system for flexible direct current traction power supply belongs to the technical blank, and the intelligent control system for flexible direct current traction power supply needs to be researched according to the actual demand of urban rail transit in China.
Disclosure of Invention
The invention aims to provide an intelligent control system of a flexible direct-current traction substation, which aims to solve the problems in the background technology.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the invention provides a flexible direct current traction substation intelligent control system, which comprises a substation station control layer and a substation spacing layer, wherein:
the substation station control layer comprises:
the intelligent communication controller comprises a CPU core main board, a main/standby power supply module, a DI digital quantity input module, a DO digital quantity output module, a backboard, a maintenance port, an Ethernet expansion module and a serial port expansion module;
the power flow controller adopts an integrated device, and the central processing module adopts an embedded processor;
the system comprises an electrical parameter monitoring terminal, a central processing module and a control module, wherein the electrical parameter monitoring terminal adopts an integrated device, the central processing module adopts a floating point high-performance DSP, and the sampling frequency is not less than 10kHZ;
a clock synchronization device;
the substation spacer layer includes:
the bidirectional converter control protection unit is arranged in the bidirectional converter;
the other transformer substation spacing layer structures comprise a direct current protection device, a PLC measurement and control unit, an Internet surfing isolating switch (including a longitudinal switch) intelligent control terminal, an alternating current switch cabinet protection device and a transformer temperature controller.
Preferably, the substation station control layer further comprises a GOOSE switch, an MMS switch, a monitoring workstation and a network analyzer; the intelligent communication controller, the power flow controller, the electric parameter monitoring terminal, the clock synchronization device, the GOOSE switch, the MMS switch, the monitoring workstation and the network analyzer are all arranged in the intelligent control signal panel in a centralized mode.
Preferably, the clock synchronization device forms a clock network through an inter-station optical fiber double network, and is respectively connected with a clock source from a communication secondary master clock of any 2 stations and converted into IRIG-B signals.
Preferably, the power flow controller and the electrical parameter monitoring terminal are both provided with a plurality of ethernet optical ports for transmitting GOOSE messages and MMS messages; and are provided with RS485 interfaces for synchronizing with IRIG-B clocks.
Preferably, the substation spacer layer further comprises a current monitoring device and a voltage monitoring device; the current monitoring device is arranged in the direct-current switch cabinet and the medium-voltage alternating-current switch cabinet and used for monitoring current parameters in the cabinet in real time, and the voltage monitoring device is arranged in the direct-current switch cabinet and the medium-voltage alternating-current switch cabinet and used for monitoring voltage parameters in the cabinet in real time.
Preferably, the direct current protection device, the PLC measurement and control unit, the internet surfing isolating switch (including a longitudinal switch) intelligent control terminal, the alternating current switch cabinet protection device and the transformer temperature controller are all provided with two GOOSE communication interfaces and two MMS communication interfaces.
Preferably, the intelligent communication controller is used for realizing communication transmission between the basic equipment in the substation and the monitoring workstation as well as between the basic equipment and the comprehensive monitoring system, receiving an instruction of the power dispatching center, issuing an instruction to the basic equipment layer equipment, and collecting and processing various information acquired from the basic equipment.
Compared with the prior art, the above technical scheme has the following beneficial effects:
1. the invention provides an intelligent control system architecture of a flexible direct-current traction substation. On the basis of an integrated automation system of an urban rail transit substation, core functions such as real-time state sensing, dynamic system power flow regulation and control, clock synchronization and the like of a flexible direct-current traction power supply system are realized by utilizing equipment such as a GOOSE network, a power flow controller, an electrical parameter monitoring terminal, a clock synchronization device and the like.
2. The invention provides an architecture of an intelligent communication controller. By adopting the embedded processor to replace the traditional x86 processor, the system power consumption is comprehensively reduced, and meanwhile, the body integrates a plurality of Ethernet optical ports, so that the problem that the traditional communication controller cannot directly network through optical fibers is solved, a photoelectric conversion device is omitted, the data transmission efficiency is improved, and the equipment cost is effectively reduced.
3. The invention provides a real-time sensing scheme of a flexible direct-current traction power supply system, which utilizes a voltage transformer and a current transformer in a medium-voltage alternating-current switch cabinet, and a voltage transmitter and a current transmitter in a direct-current switch cabinet to realize state monitoring of the medium-voltage alternating-current system and the direct-current traction power supply system. The scheme has strong feasibility and is convenient to popularize and apply.
4. The invention provides a flexible direct current traction power supply flow control network scheme, which adopts the ideas of partition, grading and redundant configuration to divide the control network into a regional level network and a line level network. The reliability of load flow calculation is effectively improved, and the network delay is reduced.
5. The invention provides a clock synchronization network scheme of a flexible direct current traction power supply system. The clock synchronization device consists of 2 redundant clock synchronization modules and clock switching modules, and the clock synchronization modules are interconnected through an optical fiber double network, so that the reliability of the clock system is improved. The system clock sources are respectively taken from communication secondary master clocks of any 2 stations, and the practicability is strong.
6. The invention provides an intelligent control strategy and algorithm of a flexible direct current traction power supply system. By taking 3 traction stations as an example, the control strategies under different working conditions are provided, the line loss is reduced, and the utilization rate of regenerated energy is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
FIG. 1 is a system wiring diagram;
FIG. 2 is a schematic diagram of a flexible DC traction substation intelligent control system;
FIG. 3 is a schematic diagram of the architecture of an intelligent communications controller;
FIG. 4 is a schematic diagram of a real-time sensing system of the flexible DC traction power supply system;
FIG. 5 is a diagram of a flexible DC traction power flow control network;
FIG. 6 is a diagram of a clock synchronization network of the flexible DC traction power supply system;
FIG. 7 is a diagram of the current take status for each train of case 1-1;
FIG. 8 is a flow condition diagram for each train of cases 1-2;
FIG. 9 is a diagram of the current take status for each train of cases 1-3;
FIG. 10 is a diagram of the current take status for each train of cases 1-4;
FIG. 11 is a diagram of the current take status for each train of case 2-1;
FIG. 12 is a flow condition diagram for each train of cases 2-2;
FIG. 13 is a diagram of the current take status for each train for cases 2-3;
FIG. 14 is a flow condition diagram for each train of cases 2-4;
FIG. 15 is a diagram of the current take status for each train of case 3-1;
FIG. 16 is a diagram of the current take status for each train of case 3-2;
FIG. 17 is a diagram of the current take status for each train of cases 3-3;
FIG. 18 is a diagram of the current take status for each train of cases 3-4;
FIG. 19 is a view of the current take status for each train of case 4-1;
FIG. 20 is a diagram of the current take status for each train of case 4-2;
FIG. 21 is a diagram of the current take status for each train for cases 4-3;
fig. 22 is a view showing the flow taking state of each train in cases 4 to 4.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
Firstly, in combination with the problems in the background art, the flexible direct current traction power supply system is used as a brand new generation traction power supply system, and the core of the flexible direct current traction power supply system comprises two parts: a bidirectional converter and an intelligent control system. At present, a bidirectional converter has mature products, and an intelligent control system has no mature technical scheme.
The intelligent control system has the functions of flexibly distributing the input and output power of each bidirectional converter by dynamically sensing the running state of the power supply system and adjusting the output characteristics of the full-line bidirectional converters in real time, so as to improve the voltage of a traction network, optimize the electric energy quality and support the energy of a fault substation. The method is mainly characterized in that energy management and operation control are carried out on a power supply system from two aspects of real-time sensing and optimal cooperative control. Therefore, the following technical problems need to be solved:
(1) The intelligent control system architecture of the flexible direct current traction substation comprises the following components:
the existing urban rail transit power monitoring system lacks of dynamic monitoring and perception of a power supply system, cannot judge the running state of the system on line, and the characteristic state of large disturbance of the system, and cannot develop advanced functions such as real-time state estimation and network topology identification of the power supply system. And the dynamic monitoring and the real-time situation awareness are taken as basic functions of the intelligent control system, and have important influence on the optimized operation of the system and the active defense of faults. Therefore, by combining the characteristics of various devices in the flexible direct-current traction substation, the intelligent control system architecture of the substation is provided as a supporting platform for realizing energy management and operation control of a flexible direct-current traction power supply system.
(2) The real-time sensing scheme of the running state of the flexible direct current traction power supply system comprises the following steps:
the system state sensing scheme is formulated according to the equipment characteristics of the bidirectional converter, the medium-voltage alternating-current system and the direct-current traction system in the flexible direct-current traction power supply system, so that the real-time sensing of the switching states, the system voltages, the currents and other electrical parameters of the medium-voltage alternating-current system and the direct-current traction system in the traction power supply system is realized, the system state sensing scheme is a basis for dynamically identifying the network topology of the system and comprehensively sensing the real-time running situation of the system in the flexible direct-current traction power supply system, is an input condition for carrying out tide calculation of the system, and is a decision basis for dynamically allocating the output characteristics of the bidirectional traction unit by the system.
(3) The networking scheme of the flexible direct current traction power supply intelligent control system comprises the following steps:
the intelligent control system network between the flexible direct current traction substations comprises a power flow control network and a clock synchronization network. The power supply flow control network is mainly used for data transmission among power supply flow controllers of all power substations and is an important link for realizing dynamic allocation of power flow among the substations. The clock synchronization network is used for time synchronization of equipment in the substation, and besides meeting the high-precision real-time calculation requirement of the intelligent control system, the clock precision also needs to consider the system reliability and engineering feasibility.
(4) Intelligent control strategy and algorithm of flexible direct current traction power supply system:
the traction of the urban rail transit train belongs to impact and random loads, and can cause certain influence on the safe and stable operation of the urban power grid; the regenerative energy generated by train braking has intermittence and volatility and cannot be completely absorbed and absorbed. The flexible direct current traction power supply system depends on the cooperative control capability of the power substations, the output power and the traction network voltage of the bidirectional traction units of each power substation can be adjusted in real time according to the traction power demand and the regenerated energy of the whole train, and the internal energy distribution of the traction system and the access characteristic to the urban power network can be improved. Therefore, it is necessary to combine the characteristics of the traction power supply system to formulate a cooperative control strategy and algorithm which give consideration to the improvement of power supply capacity, low-carbon synergy and the friendliness of the power distribution network.
In view of the above problems, the reasons for the problems are specifically:
(1) The flexible direct current traction power supply technology based on the full-control type bidirectional converter and the intelligent control system has the capability of flexibly regulating and controlling the energy of the traction power supply system and actively responding to the demands of the urban power distribution network, thereby fundamentally changing the operation mechanism of the traditional urban rail transit traction power supply system, and the related research is still in a starting stage at present and needs to be invented.
(2) Compared with the traditional traction substation, the flexible direct-current traction substation is additionally provided with a bidirectional traction unit, a power flow controller, an electrical parameter monitoring terminal, a clock synchronization device, a current sensor, a voltage sensor and other new equipment. The intelligent control system of the flexible direct current traction substation not only needs to meet the functions of the traditional power monitoring system, but also meets the functions of system state sensing, real-time tide calculation, dynamic load allocation of a bidirectional traction unit, inter-communication, clock synchronization and the like, and no related technical scheme is needed at present, and the invention and the creation are needed.
(3) The intelligent control strategy and algorithm are core technologies of the intelligent control system of the flexible direct current traction substation, determine whether the flexible direct current traction power supply system can improve the system capacity and economy on the premise of guaranteeing the reliability, and have no related technical scheme at present, so that the invention and the creation are needed.
Therefore, in summary, the invention provides a flexible direct current traction substation intelligent control system scheme, builds a flexible direct current traction substation intelligent control system architecture according to the equipment characteristics and the system function requirements in the substation, provides a built intelligent control system networking scheme, provides a real-time sensing scheme of the running state of a flexible direct current power supply system, and formulates a flexible direct current traction power supply system cooperative control strategy and algorithm. The method comprises the following steps:
1. the intelligent control system architecture of the flexible direct current traction substation comprises the following components:
the flexible direct current traction substation intelligent control system is divided into a substation station control layer and a substation spacer layer, and a system architecture diagram is shown in figure 2.
1. And the substation control layer.
The substation station control layer comprises an intelligent communication controller, a power flow controller, an electrical parameter monitoring terminal, a clock synchronization device, a GOOSE switch, an MMS switch, a monitoring workstation and a network analyzer, which are all arranged in the intelligent control signal panel in a centralized manner.
Wherein,
an intelligent communication controller: the intelligent communication controller is provided with a main and standby intelligent communication controller and has a double-machine hot standby function. The main functions are to realize communication transmission between the basic equipment in the substation and the monitoring workstation as well as between the basic equipment and the comprehensive monitoring system, receive the command of the power dispatching center, issue the command to the basic equipment layer equipment, and collect and process various information acquired from the basic equipment. The intelligent communication controller adopts an embedded processor to replace a traditional x86 processor, so that the system power consumption is comprehensively reduced, a plurality of Ethernet optical ports are integrated in the body, the problem that the traditional communication controller cannot directly network through optical fibers is solved, a photoelectric conversion device is omitted, the data transmission efficiency is improved, and the equipment cost is effectively reduced. A schematic diagram of the structure of the intelligent communication controller is shown in fig. 3.
A power flow controller: the main and standby power flow controllers are arranged, and the dual-machine hot standby function is provided. The integrated device is adopted, and the central processing module adopts an embedded processor. The system is provided with a plurality of Ethernet optical ports for transmitting GOOSE messages and MMS messages; the device is provided with an RS485 interface for IRIG-B clock synchronization. The main functions of the device are as follows: (1) The switching-on and switching-off states of the AC/DC switch are obtained through the AC protection device and the DC protection device connected with the GOOSE network and are used as the basis for sensing the running state of the system; (2) The method comprises the steps of obtaining voltage and current parameters of a current-to-current and direct-current system through an electric parameter monitoring terminal connected with a GOOSE network, and taking the voltage and current parameters as input conditions of power flow calculation; (3) Through GOOSE network between adjacent stations, realizing data interaction with other substation power flow controllers in the network; according to the real-time power flow distribution and load demand of the power supply system, carrying out operation according to a cooperative control strategy and algorithm, and giving out the optimal output power and output voltage value of the bidirectional traction unit; (4) Transmitting a control message to the control and protection unit of the bidirectional converter through the GOOSE network, so as to realize the dynamic regulation and control of the output power and the output voltage of the bidirectional traction unit; (5) Transmitting a control message to the local communication controller through the local MMS network to realize the monitoring of the equipment state of the power flow controller; and (6) realizing clock synchronization through the clock network.
And an electrical parameter monitoring terminal: the integrated device is adopted, the central processing module adopts a floating point high-performance DSP, and the sampling frequency is not less than 10kHZ. The system is provided with a plurality of Ethernet optical ports for transmitting GOOSE messages and MMS messages; the device is provided with an RS485 interface for IRIG-B clock synchronization. The main functions of the device are as follows: (1) Collecting the bus voltage of the medium-voltage alternating current system and the feeder current of the bidirectional traction unit in real time through a medium-voltage alternating current system voltage and current sensor connected with the GOOSE network; (2) Collecting bus voltage, incoming line current and feeder line current of a direct current traction system in real time through a direct current system voltage and current sensor connected with the GOOSE network; (3) The collected data is transmitted to a power flow controller of the power supply in real time through a GOOSE network and is used for power flow calculation; (4) Transmitting a control message to the local communication controller through the local MMS network to realize the monitoring of the equipment state of the power flow controller; and (5) realizing clock synchronization through the clock network.
Clock synchronizing device: the full line clock synchronizer forms a clock network through the inter-station optical fiber double network, and is respectively connected with a clock source from a communication secondary master clock of any 2 stations and converted into IRIG-B signals. The clock synchronization system automatically selects a certain clock source as a unified clock source of the whole line.
2. Substation spacer layer.
The transformer substation spacer layer comprises a bidirectional converter control protection unit, a direct current protection device, a PLC measurement and control unit, an intelligent control terminal of an internet surfing isolating switch (including a longitudinal switch), an alternating current switch cabinet protection device, a transformer temperature controller and other basic equipment in the transformer substation.
Wherein, in particular,
bidirectional converter control protection unit: the power flow controller is arranged in the bidirectional converter, receives the instruction of the power flow controller through the GOOSE network, and realizes the dynamic regulation and control of the output voltage and current of the bidirectional converter; and transmitting a control message to the communication controller through the MMS network, so as to realize the monitoring of the states of the bidirectional converter and the matched cooling system equipment.
Current monitoring device: the device is arranged in a direct current switch cabinet and a medium voltage alternating current switch cabinet and is used for monitoring current parameters in the cabinet in real time.
Voltage monitoring device: the device is arranged in a direct current switch cabinet and a medium voltage alternating current switch cabinet and is used for monitoring voltage parameters in the cabinet in real time.
The other transformer substation spacers comprise a direct current protection device, a PLC measurement and control unit, an internet surfing isolating switch (comprising a longitudinal switch) intelligent control terminal, an alternating current switch cabinet protection device, a transformer temperature controller and the like, and two GOOSE communication interfaces and two MMS communication interfaces are respectively arranged.
2. The real-time sensing scheme of the flexible direct current traction power supply system comprises the following steps:
the flexible direct current traction power supply system utilizes an electrical parameter monitoring terminal to be matched with a voltage transformer and a current transformer in a medium-voltage alternating current switch cabinet, and a voltage transmitter and a current transmitter in the direct current switch cabinet to monitor the states of the medium-voltage alternating current system and the direct current traction power supply system. A schematic diagram of the system is shown in fig. 4.
1. Current monitoring device: (1) The direct current traction system is arranged in a direct current switch cabinet, is matched with current transmitters in a wire inlet cabinet, a feeder cabinet and a negative pole cabinet, converts electric signals output by the current transmitters into optical signals, and transmits the optical signals to the electrical parameter monitoring terminal through the GOOSE network, so that the wire inlet current, the feeder current and the reflux current of the direct current traction system are monitored in real time. (2) The device is arranged in a feeder cabinet of a bidirectional traction unit of a medium-voltage alternating current system, is matched with a current transformer in the cabinet, converts an electric signal output by the current transformer into an optical signal, and transmits the optical signal to an electrical parameter monitoring terminal of the station through the station GOOSE network, so as to monitor the feeder current of the bidirectional traction unit of the medium-voltage alternating current traction system in real time.
2. Voltage monitoring device: (1) Install at direct current switch cabinet, use with the cooperation of inlet wire cabinet, negative pole internal voltage changer, change the signal of telecommunication of voltage changer output into optical signal, pass to this institute electrical parameter monitoring terminal through this GOOSE on-line for the positive busbar voltage of this direct current traction system of real-time supervision, negative busbar voltage (rail potential). (2) The device is respectively arranged in a voltage transformer cabinet of a bus on the 2 face of the medium-voltage alternating current system, is matched with the voltage transformer, converts an electric signal output by the voltage transformer into an optical signal, and transmits the optical signal to an electrical parameter monitoring terminal of the substation through the GOOSE network, so that the device is used for monitoring the voltages of two bus sections of the medium-voltage alternating current system in real time.
3. The networking scheme of the flexible direct current traction power supply intelligent control system comprises the following steps:
the flexible direct current traction power supply intelligent control system network comprises a power supply flow control network and a clock synchronization network.
1. A flexible direct current traction power flow control network.
The flexible DC traction power flow control network architecture is shown in figure 5.
Considering the reliability of power flow calculation and network delay factors, the network is divided into a line-level network and a regional-level network.
Regional level power flow control network: the regional power flow control network generally comprises 3-5 flexible direct current substations; the power flow controller in the signal panel is intelligently controlled by the substation, and a GOOSE communication ring network is formed by using the inter-optical fiber double-network, so that real-time interaction of online calculation data in the area and dynamic adjustment of the output characteristics of the bidirectional traction unit in the area are realized; the power flow controller and the inter-network adopt redundant configuration and have an automatic redundant switching function; the power flow controller in any one of the power substations in the area can be used as the area central station to perform real-time data interaction with the power flow controller in the line central station.
Line level power flow control network: the line-level central station is generally positioned in a power substation of the line center, and a redundant power flow controller is arranged in the power substation; and the power flow controllers in the central stations of the areas and the central stations of the lines form GOOSE communication looped networks by utilizing optical fiber double networks, so that real-time interaction of on-line calculation data of line level and area level is realized, and the power flow distribution among the areas is allocated.
2. A clock synchronous network.
The clock synchronization network architecture of the flexible direct current traction power supply system is shown in fig. 6.
In order to meet the high-precision real-time calculation requirement of the intelligent control system, the flexible direct-current traction power supply system needs to build a clock synchronization network for time synchronization of equipment in the substation.
The intelligent control signal panel of the flexible direct current transformer station is internally provided with clock synchronous devices which mainly comprise 2 redundant clock synchronous modules and clock switching modules. All the substation clock synchronous devices are interconnected through optical fiber double networks to form a full-line clock synchronous system. The clock synchronization system is respectively connected with a clock source from a communication secondary master clock of any 2 stations and is converted into IRIG-B signals. The system can automatically select a certain clock source as a unified clock source of the whole line, and when the clock source fails, the system automatically switches to another clock source.
The bidirectional converter, the electrical parameter monitoring terminal, the power flow controller and the intelligent communication controller in the flexible direct current substation are directly paired with the clock synchronization device through the communication cable, and other devices in the substation realize soft synchronization through the intelligent communication controller and the MMS network.
4. Intelligent control strategy and algorithm of flexible direct current traction power supply system:
in the running process of a train on a line, the following 4 behavior modes exist: start, cruise, inactive, brake, etc. conditions:
1. starting, namely starting the train from a static state in an accelerating way, and continuously sucking a larger current from a traction network;
2. cruising, and continuously sucking small current from the traction network for maintaining the speed after the train reaches the preset speed;
3. the train runs idle by means of freewheeling and does not draw current from the traction network;
4. and braking, wherein the train brakes to generate regenerative braking current, and feeding the regenerative braking current back to the traction network.
Because the daily driving plan in the operation stage is determined in advance, and the current and voltage state monitoring described in the flexible direct current traction power supply system real-time sensing scheme is combined, the running state of each time and each train can be known exactly, and for convenience of description, the following two traction intervals formed by 3 traction stations (marked as traction station A, traction station B and traction station C) are taken as examples, and a train running (marked as a 1# train and a 2# train) is assumed in each of the two traction intervals, and the two trains are arranged and combined according to the different behavior modes to determine the corresponding control strategy respectively.
(1) Case 1-1: starting a 1# train and starting a 2# train; the train flow taking state is shown in fig. 7.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced.
(2) Cases 1-2: starting the No. 1 train and cruising the No. 2 train; the train flow taking state is shown in fig. 8.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced. (3) cases 1-3: starting a No. 1 train and coasting a No. 2 train; the train flow taking state is shown in fig. 9.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced.
(4) Cases 1-4: starting the 1# train and braking the 2# train; the train flow taking state is shown in fig. 10.
The traction station A and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced; the traction station B outputs at a lower voltage constant voltage, so that the braking energy of the No. 2 train can be preferentially absorbed by the No. 1 train.
(5) Case 2-1: cruising the No. 1 train and starting the No. 2 train; the train flow taking state is shown in fig. 11.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced.
(6) Case 2-2: cruising the No. 1 train cruising the No. 2 train; the train flow taking state is shown in fig. 12.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced.
(7) Cases 2-3: the No. 1 train cruises and the No. 2 train runs idle; the train flow taking state is shown in fig. 13.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced.
(8) Cases 2-4: train 1 cruises, train 2 brakes; the train flow taking state is shown in fig. 14.
The traction station A and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced; the traction station B outputs at a lower voltage constant voltage, so that the braking energy of the No. 2 train can be preferentially absorbed by the No. 1 train.
(9) Case 3-1: the 1# train is idle and the 2# train is started; the train flow taking state is shown in fig. 15.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced.
(10) Case 3-2: the train # 1 runs idle and the train # 2 cruises; the train flow taking state is shown in fig. 16.
The traction station A, the traction station B and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced.
(11) Case 3-3: the train # 1 is coasted, and the train # 2 is coasted; the train flow taking state is shown in fig. 17.
The traction station A, the traction station B and the traction station C output at a constant voltage according to a higher voltage, and remain unchanged.
(12) Cases 3-4: the 1# train runs idle and the 2# train brakes; the train flow taking state is shown in fig. 18.
The traction station A, the traction station B and the traction station C output at a constant voltage according to lower voltage, so that the braking energy of the No. 2 train can be transmitted to other traction intervals.
(13) Case 4-1: train 1 braking and train 2 starting; the train flow taking state is shown in fig. 19.
The traction station A and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced; the traction station B outputs at a lower voltage constant voltage, so that the braking energy of the train # 1 can be preferentially absorbed by the train # 2.
(14) Case 4-2: train braking # 1 and train cruising # 2; the train flow taking state is shown in fig. 20.
The traction station A and the traction station C output according to higher voltage constant voltage, so that the line loss is reduced; the traction station B outputs at a lower voltage constant voltage, so that the braking energy of the train # 1 can be preferentially absorbed by the train # 2.
(15) Case 4-3: brake of the No. 1 train and idle running of the No. 2 train; the train flow taking state is shown in fig. 21.
The traction station A, the traction station B and the traction station C output at a constant voltage according to lower voltage, so that the braking energy of the 1# train can be transmitted to other traction intervals.
(16) Cases 4-4: train 1 braking and train 2 braking; the train flow taking state is shown in fig. 22.
The traction station A, the traction station B and the traction station C output at a constant voltage according to lower voltage, so that the braking energy of the 1# train and the 2# train can be transmitted to other traction sections.
In addition, the architecture scheme of the intelligent control system of the flexible direct current traction substation can be further expanded according to the requirements. For example, the MMS network and the GOOSE network are integrated, and the data communication in the system is realized completely through the GOOSE network, so that the network structure can be optimized and the system investment can be further reduced while the timeliness and the reliability are ensured.
The rectifier unit is replaced by a bidirectional converter device, has the functions of traction, train regeneration electric energy absorption, reactive power compensation and the like, can improve the direct current power supply quality, reduce the direct current power supply energy consumption, reduce system harmonic waves, and can perform distributed reactive power compensation on the system and save the SVG device and equipment room area of a main transformer substation.
In summary, the invention discloses a subway power supply system which combines an SVG device to optimize a DC substation structure and improve reliability.
(1) The invention provides a subway power supply system scheme combining SVG devices and optimizing a DC substation framework, two sets of rectifiers are assembled to two sections of 35kV alternating current buses and two sections of 1500V direct current buses, each section of direct current bus is provided with 4 feedback lines which are respectively connected with a left power supply arm contact network and a right power supply arm contact network which are arranged up and down, the whole DC substation is prevented from being withdrawn due to the faults of the alternating current buses or the direct current feeder switch, the operation mode is flexible, the reliability of the DC power supply system can be improved, and the large bilateral power supply mode is avoided. Taking the 4-seat DC substation system as an example, the 2 nd (or 3 rd) DC substation can be reduced, the DC power supply equipment and the installation cost are saved by about 1000 ten thousand, the total cost of 6 DC feeder switches added to the other 3 DC substations is 180 ten thousand, and the total power supply system is saved by 820 ten thousand. In addition, the invention can save 1 equipment room of the DC substation, and the area is about 200 m.
(2) The SVG device of the main transformer station provided by the invention has the advantages that the filtering function is started in the normal operation period, the harmonic wave generated by the rectifier unit can be treated, and the utilization rate of the SVG device is improved.
(3) The rectifier unit provided by the invention is hung on two sections of 35kV alternating current buses, so that traction loads are uniformly distributed on the I section of looped network and the II section of looped network, and the voltage loss of a medium-voltage network is reduced.
(4) The power supply system scheme of the invention can be further expanded according to the requirement. For example, the rectifier unit is replaced by a bidirectional converter device, and the bidirectional converter device has the functions of traction, train regeneration electric energy absorption, reactive power compensation and the like, can improve the direct current power supply quality, reduce the direct current power supply energy consumption, reduce system harmonic waves, and can perform distributed reactive power compensation on the system and save the SVG device and equipment room area of a main transformer substation.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a flexible direct current traction substation intelligent control system which characterized in that includes substation station accuse layer and substation spacing layer, wherein:
the substation station control layer comprises:
the intelligent communication controller comprises a CPU core main board, a main/standby power supply module, a DI digital quantity input module, a DO digital quantity output module, a backboard, a maintenance port, an Ethernet expansion module and a serial port expansion module;
the power flow controller adopts an integrated device, and the central processing module adopts an embedded processor;
the system comprises an electrical parameter monitoring terminal, a central processing module and a control module, wherein the electrical parameter monitoring terminal adopts an integrated device, the central processing module adopts a floating point high-performance DSP, and the sampling frequency is not less than 10kHZ;
a clock synchronization device;
the substation spacer layer includes:
the bidirectional converter control protection unit is arranged in the bidirectional converter;
the transformer substation comprises a rest transformer substation spacing layer structure, wherein the rest transformer substation spacing layer structure comprises a direct current protection device, a PLC measurement and control unit, an Internet surfing isolating switch intelligent control terminal, an alternating current switch cabinet protection device and a transformer temperature controller.
2. The intelligent control system of the flexible direct current traction substation according to claim 1, wherein: the substation station control layer further comprises a GOOSE switch, an MMS switch, a monitoring workstation and a network analyzer; the intelligent communication controller, the power flow controller, the electric parameter monitoring terminal, the clock synchronization device, the GOOSE switch, the MMS switch, the monitoring workstation and the network analyzer are all arranged in the intelligent control signal panel in a centralized mode.
3. The intelligent control system of the flexible direct current traction substation according to claim 1, wherein: the clock synchronization device forms a clock network through an inter-station optical fiber double network, and is respectively connected with a clock source from a communication secondary master clock of any 2 stations and is converted into IRIG-B signals.
4. The intelligent control system of the flexible direct current traction substation according to claim 3, wherein: the power flow controller and the electrical parameter monitoring terminal are provided with a plurality of Ethernet optical ports for transmitting GOOSE messages and MMS messages; and are provided with RS485 interfaces for synchronizing with IRIG-B clocks.
5. The intelligent control system of the flexible direct current traction substation according to claim 1, wherein: the substation spacer layer also comprises a current monitoring device and a voltage monitoring device; the current monitoring device is arranged in the direct-current switch cabinet and the medium-voltage alternating-current switch cabinet and used for monitoring current parameters in the cabinet in real time, and the voltage monitoring device is arranged in the direct-current switch cabinet and the medium-voltage alternating-current switch cabinet and used for monitoring voltage parameters in the cabinet in real time.
6. The intelligent control system of the flexible direct current traction substation according to claim 1, wherein: the direct current protection device, the PLC measurement and control unit, the Internet surfing isolating switch intelligent control terminal, the alternating current switch cabinet protection device and the transformer temperature controller are all provided with two GOOSE communication interfaces and two MMS communication interfaces.
7. The intelligent control system of the flexible direct current traction substation according to claim 1, wherein: the intelligent communication controller is used for realizing communication transmission between the basic equipment in the substation and the monitoring workstation as well as between the basic equipment and the comprehensive monitoring system, receiving an instruction of the power dispatching center, issuing an instruction to the basic equipment layer equipment, and collecting and processing various information acquired from the basic equipment.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014090025A1 (en) * | 2012-12-11 | 2014-06-19 | 国网上海市电力公司 | On-line and off-line integrated analysis and testing method for smart substation |
| CN205070601U (en) * | 2015-07-29 | 2016-03-02 | 四川艾德瑞电气有限公司 | Based on intelligence traction substation overall framework system of IEC61850 system |
| CN105549460A (en) * | 2016-03-10 | 2016-05-04 | 中国电子科技集团公司第十研究所 | Satellite-borne electronic equipment comprehensive management and control system |
| CN109768527A (en) * | 2018-12-14 | 2019-05-17 | 国电南京自动化股份有限公司 | A kind of intelligence traction substation stratification guard method and system |
| CN110504692A (en) * | 2019-08-27 | 2019-11-26 | 西南交通大学 | The Unified Power Flow control system and method for city rail traffic photovoltaic energy storage traction power supply |
| CN213547191U (en) * | 2020-10-21 | 2021-06-25 | 天津凯发电气股份有限公司 | Novel digital protection system of traction substation based on two-layer two-network |
| CN113162235A (en) * | 2021-04-09 | 2021-07-23 | 中铁第四勘察设计院集团有限公司 | Urban rail transit intelligent substation system |
| CN215398285U (en) * | 2021-03-01 | 2022-01-04 | 中国铁路设计集团有限公司 | Networked traction power supply system based on integration of three networks |
| CN114745344A (en) * | 2022-03-15 | 2022-07-12 | 天津七所精密机电技术有限公司 | Ethernet-based data exchange device and method containing multiple communication interfaces |
| CN115022109A (en) * | 2022-07-20 | 2022-09-06 | 北京城建智控科技股份有限公司 | Data management method for intelligent edge all-in-one machine and station cloud system |
| CN115425673A (en) * | 2022-11-07 | 2022-12-02 | 清华大学 | Flexible direct-current traction power supply and reflux system comprehensive high-efficiency load flow calculation method thereof |
| WO2023005201A1 (en) * | 2021-07-30 | 2023-02-02 | 中国电建集团河北省电力勘测设计研究院有限公司 | Distributed electrical monitoring management system for intelligent power plant |
| CN115689361A (en) * | 2022-11-07 | 2023-02-03 | 中铁第四勘察设计院集团有限公司 | Traction power supply capacity situation sensing system and method based on data driving |
| CN116742804A (en) * | 2023-06-15 | 2023-09-12 | 中铁二院工程集团有限责任公司 | Ultra-wide area protection measurement and control system based on vehicle-source-network cooperative technology |
| CN116847415A (en) * | 2023-09-01 | 2023-10-03 | 北京城建智控科技股份有限公司 | Edge control all-in-one based on wireless transmission |
-
2023
- 2023-11-23 CN CN202311571127.4A patent/CN117375062B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014090025A1 (en) * | 2012-12-11 | 2014-06-19 | 国网上海市电力公司 | On-line and off-line integrated analysis and testing method for smart substation |
| CN205070601U (en) * | 2015-07-29 | 2016-03-02 | 四川艾德瑞电气有限公司 | Based on intelligence traction substation overall framework system of IEC61850 system |
| CN105549460A (en) * | 2016-03-10 | 2016-05-04 | 中国电子科技集团公司第十研究所 | Satellite-borne electronic equipment comprehensive management and control system |
| CN109768527A (en) * | 2018-12-14 | 2019-05-17 | 国电南京自动化股份有限公司 | A kind of intelligence traction substation stratification guard method and system |
| CN110504692A (en) * | 2019-08-27 | 2019-11-26 | 西南交通大学 | The Unified Power Flow control system and method for city rail traffic photovoltaic energy storage traction power supply |
| CN213547191U (en) * | 2020-10-21 | 2021-06-25 | 天津凯发电气股份有限公司 | Novel digital protection system of traction substation based on two-layer two-network |
| CN215398285U (en) * | 2021-03-01 | 2022-01-04 | 中国铁路设计集团有限公司 | Networked traction power supply system based on integration of three networks |
| CN113162235A (en) * | 2021-04-09 | 2021-07-23 | 中铁第四勘察设计院集团有限公司 | Urban rail transit intelligent substation system |
| WO2023005201A1 (en) * | 2021-07-30 | 2023-02-02 | 中国电建集团河北省电力勘测设计研究院有限公司 | Distributed electrical monitoring management system for intelligent power plant |
| CN114745344A (en) * | 2022-03-15 | 2022-07-12 | 天津七所精密机电技术有限公司 | Ethernet-based data exchange device and method containing multiple communication interfaces |
| CN115022109A (en) * | 2022-07-20 | 2022-09-06 | 北京城建智控科技股份有限公司 | Data management method for intelligent edge all-in-one machine and station cloud system |
| CN115425673A (en) * | 2022-11-07 | 2022-12-02 | 清华大学 | Flexible direct-current traction power supply and reflux system comprehensive high-efficiency load flow calculation method thereof |
| CN115689361A (en) * | 2022-11-07 | 2023-02-03 | 中铁第四勘察设计院集团有限公司 | Traction power supply capacity situation sensing system and method based on data driving |
| CN116742804A (en) * | 2023-06-15 | 2023-09-12 | 中铁二院工程集团有限责任公司 | Ultra-wide area protection measurement and control system based on vehicle-source-network cooperative technology |
| CN116847415A (en) * | 2023-09-01 | 2023-10-03 | 北京城建智控科技股份有限公司 | Edge control all-in-one based on wireless transmission |
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