WO2014090018A1

WO2014090018A1 - Iec61850 standard-based intelligent power distribution terminal

Info

Publication number: WO2014090018A1
Application number: PCT/CN2013/084446
Authority: WO
Inventors: 梁伟; 王楠; 王旭东; 时燕新; 王峥; 陈培育; 王瑶
Original assignee: 天津市电力公司; 国家电网公司
Priority date: 2012-12-12
Filing date: 2013-09-27
Publication date: 2014-06-19
Also published as: CN103023149A

Abstract

An IEC61850 standard-based intelligent power distribution terminal, comprising: a dual-core data processing plate (11), an analogue quantity acquisition plate (12), a remote signalling plate (13), a remote control plate (14), a power supply module (15) and a high-speed serial bus (16). The basic requirements of an intelligent power distribution network to a terminal function are realized. Modular design meets the demand of expanding different functions. A communication protocol between devices is standardized by adopting an IEC61850 standard, and a promotion effect is played on the intelligent power distribution terminal in the aspects of openness, expansibility and interoperability, thereby achieving wider power distribution network monitoring, embodying management benefit and economic benefit, and establishing a more reliable and flexible power distribution network communication system. Also disclosed is an IEC61850 standard-based intelligent power distribution system.

Description

Intelligent power distribution terminal based on IEC61850 standard

Technical field

The invention belongs to the technical field of power distribution system control and distributed generation grid-connected control, and particularly relates to an intelligent power distribution terminal based on the IEC61850 standard. Background technique

At present, the installation of electric energy meters, distribution monitoring terminals, power quality monitoring terminals, reactive power compensation and other devices in the distribution network to achieve energy collection, power billing, load management, line loss analysis, power quality analysis, reactive power automatic compensation And other functions. Although the functional requirements are met, the operation and maintenance costs of the equipment are multiplied, and multiple terminals simultaneously monitor the same power distribution equipment. Data information cannot be shared with each other. Each terminal only considers one communication method, and lacks The coordination of multiple communication resources, the data collected are not completely consistent, resulting in the timeliness, accuracy and integrity of the data of the acquisition system can not be guaranteed, can not provide the necessary data support for the analysis decision system. It can not meet the requirements of power enterprise information construction and modern enterprise management.

With the construction of intelligent distribution network, the level of distribution automation and informationization is getting higher and higher, and the intelligent distribution terminal is required to have modular and integrated design features, which is intensive and has high reliability, high expansion and high. Communication stability and security. The application of new technologies such as distributed power supply and energy storage device access and demand side management in the distribution network puts higher demands on the functions of intelligent power distribution terminals. Some intelligent power distribution terminals provided by the prior art can only implement functions such as reactive power compensation, distribution transformer monitoring, and power quality monitoring, and cannot meet the requirements. Summary of the invention

The invention provides an intelligent power distribution terminal based on the IEC61850 standard, which aims to solve the functions of reactive power compensation, distribution transformer monitoring and power quality monitoring of some intelligent power distribution terminals provided by the prior art, and cannot meet the multifunctional requirements. The problem.

The object of the present invention is to provide an intelligent power distribution terminal based on the IEC61850 standard, which is intelligent Power distribution terminals include:

The dual-core data processing board is connected with the human-machine interface, the station-level communication, and the IED communication input and output channel, and is used for quickly and comprehensively processing the information acquired by the multi-channel;

The analog acquisition board is connected with the analog input and output channels for controlling and realizing the collection and processing of the analog information;

a remote communication board, connected to the remote signal input and output channel, for processing remotely transmitted information, such as switch position or valve position;

The remote control board is connected with the open signal channel for realizing control and processing of the remote information; the power type module is connected with the device power supply for realizing the control of the energy storage component and providing power for the corresponding component;

The high-speed serial bus is connected with the dual-core data processing board, the analog acquisition board, the remote signal board, the remote control board and the power module, and is used for implementing the dual-core data processing board and the analog quantity acquisition board. Information exchange and transmission of remote signaling board, remote control board and power module.

Further, the high-speed serial bus is connected to the dual-core data processing board, the analog acquisition board, the remote information board, the remote control board, and the power module through a high-speed bus interface.

Another object of the present invention is to provide an intelligent power distribution system based on the IEC61850 standard, the intelligent power distribution system comprising:

The data layer includes a data acquisition function module, a data filtering function module, and a data storage function module, and is used for collecting various running data;

The process layer includes a task scheduling function module and an information delivery function module, which is used to manage system resources when the terminal is running, and performs task scheduling and data transmission between tasks;

The application layer includes a human-machine interface function module and a communication interface function module, and is used to implement the corresponding application function according to the actual application requirements of the terminal.

Further, the functional modules of the intelligent power distribution system include:

The power distribution monitoring function module is used for real-time collection and control processing of power distribution information of the system; the state monitoring function module is used for realizing the state of the switch state and the position of the grounding knife gate; On-line monitoring of distribution equipment temperature, DC power supply, cable head temperature, SF6 gas, water level, fire, ambient temperature status;

The power quality monitoring function module is used for calculating the harmonic components of 1~50 times; the analysis and calculation of the three-phase unbalance degree, the local storage function of the power quality monitoring data recording, and the waveform recording function triggered by the power quality event;

The fault judgment function module is configured to provide zero sequence overvoltage, zero sequence overcurrent, line overload, and line three-phase overcurrent detection function by collecting voltage and current flow of the line; according to the collected current and the set value Automatically and quickly determine whether the line is faulty, distinguish fault current direction, identify single-phase grounding or phase-to-phase short-circuit fault, and report the fault information and properties to the distribution automation system in a timely manner; reactive power compensation function module for real-time reactive power dynamics Response, with multiple switching control modes, can be configured as feedforward or feedback control model according to system characteristics, and can also consider harmonic filter control; flexible setting of capacitor unit capacity, real-time monitoring of capacitor bank status, when system When the voltage is overvoltage, undervoltage, or phase loss, the capacitor is blocked and protected; the switching action of the reactive compensation capacitor and various events of the switch can be recorded and time-scaled;

Relay protection function module, designed for each outgoing line with overload, over current, zero sequence voltage, zero sequence current set relay protection function, over current protection also has low voltage blocking and reclosing function, when the outgoing line occurs single phase grounding or When the short circuit is faulty, it can quickly identify and jump the corresponding circuit breaker and cut off the faulty line. It has a reclosing function. When the transient fault occurs, the reclosing function can be quickly eliminated, and the whole line can be restored.

Distributed power access monitoring and energy storage device monitoring function module, with access device impact analysis, access device fault diagnosis, isolation control function, remote wired/wireless communication function and device information notification function between devices, determine the best Switching combination and distributed power supply optimal configuration type and configuration capacity, solving the problem of insufficient power supply during peak hours of power consumption, and improving the impact disturbance caused by the switching control and access process to the smart distribution network;

The demand side management function module completes the accurate collection and copying of the electric energy data by collecting the power distribution information of the distribution line, the distribution transformer, the large electric power user, and the grid data, and accurately calculating the data. Calculation, statistics, analysis, on this basis, the auxiliary system master station accurately analyzes the grid power information and power consumption information on the purchase side, power supply side, power selling side, and power side, and analyzes the current load gap, line loss, and harmonics in time. Wave, reactive power, power supply, effective measures for load management, line loss management, power quality management, and anti-stealing.

Further, the intelligent power distribution system adopts the technology and method of IEC61850 to model the communication of the intelligent power distribution terminal, and regulates the mapping relationship between the data interface, the communication mode, the information exchange service and the communication mode of the power distribution terminal, and realizes the information. Standardized transmission;

1) Information modeling

Divided into three logical devices (LD), LD1 mainly completes the conventional SCADA function, realizes remote signaling, telemetry, remote control; LD2 mainly completes protection and fault detection functions; LD3 mainly completes intelligent power module management, each logical device contains LLN0 and LPHD, LLN0 contains information about the physical device IED, controls the IED self-test; LPDH models the public information of the physical device;

2) Information exchange

Information exchange includes information exchange between primary station and terminal, terminal and terminal, terminal and process layer equipment, current transformer, voltage transformer, switch and distribution. In IEC61850, it is mainly composed of client/server model and common object for substation events. (GOOSE) model, sampled value transmission model, and time-synchronized model for information exchange of distribution terminals;

3) Service mapping

According to the standard of IEC61850, the information exchange service used by the power distribution terminal is mapped to a specific communication method;

1 client/server model, mapped to the manufacturing message specification MMS (Manufacturing Message Specification) or IEC60870-5-101 I 104 implementation;

2 GOOSE message, directly mapped to the ISO/IEC 8802-3 Ethernet data link layer with reference to IEC61850-8-1;

3 using value transmission, mapping with reference to IEC61850-9-2;

4 time peers use Simple Network Time Protocol (SNTP) for mapping; In addition, the self-description function of the IEC61850-6 standard is used to replace the manual configuration and modification of the telecontrol protocol point table. The self-description ICD file is automatically generated by the hardware encoder, and the power distribution master station obtains the ICD of the intelligent power distribution terminal through FTP. The file, from which the three remote information tables and network topology information are parsed, the power distribution main station SCADA system can realize the automatic generation function of the pre-protocol point table and the library, and the "point-by-point test" of the previous telecontrol protocol point table. Simplified to "spot verification".

The distribution intelligent terminal based on IEC61850 standard proposed by the invention realizes the basic requirements of the current intelligent distribution network for terminal functions, and the modular design satisfies the requirement of expanding different functions, and regulates communication between devices by adopting the IEC61850 standard. The agreement promotes the intelligent distribution terminal in terms of openness, expansion and interoperability. The distribution intelligent terminal application realizes a wider distribution network monitoring, which reflects management benefits and economic benefits. Established a more reliable and flexible distribution network communication system with strong promotion and application value. DRAWINGS

1 is a structural block diagram of an intelligent power distribution terminal based on the IEC61850 standard according to an embodiment of the present invention;

2 is a structural block diagram of an intelligent power distribution system based on the IEC61850 standard according to an embodiment of the present invention; and FIG. 3 is a schematic structural diagram of a smart power distribution terminal according to an embodiment of the present invention.

In the picture:

11, dual-core data processing board; 12, analog acquisition board; 13, remote letter board;

14, remote control board; 15, power class module; 16, high-speed serial bus;

21, the data layer; 22, the process layer; 23, the application layer. detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. FIG. 1 shows the structure of an intelligent power distribution terminal based on the IEC61850 standard provided by an embodiment of the present invention. For the convenience of description, only parts related to the present invention are shown.

The intelligent power distribution terminal includes:

The dual-core data processing board 11 is connected with the human-machine interface, the station-level communication, and the IED communication input and output channel, and is used for quickly and comprehensively processing the information acquired by the multi-channel;

The analog acquisition board 12 is connected with the analog input and output channels for controlling and realizing the collection and processing of the analog quantity information;

The remote communication board 13 is connected to the remote signal input and output channel for processing remotely transmitting information such as switch position or valve position;

The remote control panel 14 is connected to the open signal channel for realizing control and processing of remote information; the power source module 15 is connected to the device power supply for implementing control of the energy storage component, and providing the corresponding component Electric energy

The high-speed serial bus 16 is connected to the dual-core data processing board 11, the analog acquisition board 12, the remote information board 13, the remote control board 14, and the power supply module 15, for implementing the dual-core data processing board 11 The analog quantity acquisition board 12, the remote information board 13, the remote control board 14 and the power source module 15 information interaction and transmission.

In the embodiment of the present invention, the high speed serial bus 16 is connected to the dual core data processing board 11, the analog quantity acquisition board 12, the remote information board 13, the remote control board 14 and the power type module 15 through the high speed bus interface.

As shown in FIG. 2, another object of the present invention is to provide an intelligent power distribution system based on the IEC61850 standard, the intelligent power distribution system including:

The data layer 21 includes a data acquisition function module, a data filtering function module, and a data storage function module for collecting various running data.

The process layer 22 includes a task scheduling function module and an information delivery function module, which is used to manage system resources during terminal operation, and performs task scheduling and data transmission between tasks;

The application layer 23 includes a human-machine interface function module and a communication interface function module, and is used according to the terminal Inter-application requirements, to achieve the corresponding application functions.

In the embodiment of the present invention, the functional modules set by the intelligent power distribution system include:

The power distribution monitoring function module is used to realize real-time collection and control processing of power distribution information of the system; the state monitoring function module is used for realizing the state of the switch state and the position of the grounding knife gate; realizing the temperature of the power distribution equipment, the DC power supply, and the cable On-line monitoring of head temperature, SF6 gas, water level, fire, and ambient temperature status;

Distributed power access monitoring and energy storage device monitoring function module, with access device impact analysis, access device fault diagnosis, isolation control function, remote wired/wireless communication function and device information notification function between devices, determine the best Switching combination and distributed power supply optimal configuration type and configuration capacity, Solve the problem of insufficient power supply during the peak hours of power consumption, and improve the impact disturbance caused by the switching control and access process to the smart distribution network;

The demand side management function module completes the accurate collection and copying of the electric energy data by collecting the power distribution information, the distribution transformer, the power consumption information of the large power users and the grid data, and accurately calculating, counting and analyzing the data. On the basis of the auxiliary system main station, the grid power information and power consumption information of the purchase side, the power supply side, the power selling side and the power side are accurately analyzed, and the current load gap, line loss, harmonics, reactive power and power supply are analyzed in time. , effective measures for load management, line loss management, power quality management, and anti-stealing.

In the embodiment of the present invention, the intelligent power distribution system adopts the technology and method of IEC61850 to model the communication of the intelligent power distribution terminal, and regulates the mapping relationship between the data interface, the communication mode, the information exchange service and the communication mode of the power distribution terminal. , to achieve standardized transmission of information;

1) Information modeling

2) Information exchange

Information exchange includes information exchange between main station and terminal, terminal and terminal, terminal and process layer 22 equipment current transformer, voltage transformer, switch and distribution transformer. In IEC61850, it is mainly used by client/server model and general for substation events. Object (GOOSE) model, sampled value transfer model, and time-synchronized model for information exchange of distribution terminals;

3) Service mapping

1 client/server model, mapped to the Manufacturing Message Specification (MMS) or IEC60870-5-101 I 104; 2 GOOSE message, directly mapped to the ISO/IEC 8802-3 Ethernet data link layer with reference to IEC61850-8-1;

3 using value transmission, mapping with reference to IEC61850-9-2;

4 time peers use Simple Network Time Protocol (SNTP) for mapping;

In addition, the self-description function of the IEC61850-6 standard is used to replace the manual configuration and modification of the telecontrol protocol point table. The self-description ICD file is automatically generated by the hardware encoder, and the power distribution master station obtains the ICD of the intelligent power distribution terminal through FTP. The file, from which the three remote information tables and network topology information are parsed, the power distribution main station SCADA system can realize the automatic generation function of the pre-protocol point table and the library, and the "point-by-point test" of the previous telecontrol protocol point table. Simplified to "spot verification".

The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Figure 1 shows the hardware structure of the intelligent power distribution terminal. As shown in the figure, the hardware structure of the intelligent terminal includes the following parts:

The high speed bus interface is connected to all of the above-mentioned boards and module parts, and information for implementing the respective components is transmitted to the high speed serial bus 16 through the high speed bus interface.

2 is a schematic diagram of the overall architecture of the intelligent power distribution terminal of the present invention. The overall design of the terminal software adopts the idea of layered design. The overall software architecture is divided into: data layer 21, process layer 22 and application layer 23.

The data layer 21 includes a data acquisition, a data filtering, and a data storage function module, and is a terminal implementation function. The basis of energy, used to achieve the collection of various data for the operation of the system;

The process layer 22 includes function modules such as task scheduling and information transmission, and is used for managing system resources when the terminal is running, and performing task scheduling and data transmission between tasks;

The application layer 23 includes function modules such as a human-machine interface and a communication interface, and is used to implement corresponding application functions according to actual application requirements of the terminal, such as communication protocol management, human-machine interface, data acquisition, and data output.

FIG. 3 is a functional architecture diagram of the intelligent power distribution terminal according to the present invention. As shown in the figure, the intelligent power distribution terminal includes the following functional modules:

Power distribution monitoring, used to realize real-time collection and control processing of power distribution information of the system;

Condition monitoring, used to realize state quantity acquisition such as switch status and grounding knife position; realize online monitoring of power supply equipment temperature, DC power supply, cable head temperature, SF6 gas, water level, fire, ambient temperature and other state quantities;

Power quality monitoring, used to calculate the harmonic components of 1 to 50 times; analysis and calculation of three-phase unbalance. Power quality monitoring data recording local storage function; waveform recording function triggered by power quality event;

Fault judgment, used to detect the voltage and current flow of the line, and provide zero-sequence over-voltage, zero-sequence over-current, line overload, line three-phase over-current detection, etc.; according to the collected current and the set value, It can automatically and quickly determine whether the line is faulty, distinguish the fault current direction, identify single-phase grounding or phase-to-phase short-circuit fault, and report the fault information and properties to the distribution automation system in time for the corresponding fault handling;

Reactive power compensation, used to realize real-time reactive power dynamic response, with multiple switching control modes, can be configured as feedforward or feedback control model according to system characteristics, and can also consider harmonic filtering control. The device can flexibly set the capacity of the capacitor unit and monitor the state of the capacitor bank in real time. When the system voltage is overvoltage, undervoltage, or lack of equivalence, the capacitor is blocked and protected. In addition, various events such as switching action of the reactive compensation capacitor, switching machine, etc. can be recorded and time-scaled;

Relay protection, designed for each line with overload, over current, zero sequence voltage, zero sequence current set Relay electric protection function, over-current protection has low-voltage blocking and reclosing function. When single-phase grounding or short-circuit fault occurs in the outgoing line, it can quickly identify and jump the corresponding circuit breaker and cut off the faulty line. It has a reclosing function, instantaneous By configuring the reclosing function during faults, it is possible to quickly eliminate faults and restore full line power supply;

Distributed power access monitoring and energy storage device monitoring, with access device impact analysis, access device fault diagnosis, isolation control function, remote wired/wireless communication function and device information notification function between devices, effectively determine the best Switching combination and distributed power supply optimal configuration type and configuration capacity, solving the problem of insufficient power supply during peak hours of power consumption, and improving the impact disturbance caused by the switching control and access process to the smart distribution network;

Demand side management, demand side management includes not only load control, but also measures and management methods for mobilizing demanders to actively participate in incentive price, cold and heat storage, and self-supplied power coordination. The device collects the electrical energy data and the grid data by collecting the distribution lines, distribution transformers, power users' power information and grid data, and accurately calculates, counts and analyzes the data. On this basis, the auxiliary system master station accurately analyzes the power grid information and power consumption information of the power purchase side, the power supply side, the power selling side, and the power side, and analyzes the current load gap, line loss, harmonics, reactive power, and Power supply, effective measures such as load management, line loss management, power quality management, and anti-stealing;

Third, the working principle

In order to achieve the above object, the present invention adopts the following technical solutions.

The intelligent power distribution terminal is designed with modular hardware design and layered object-oriented software. The hardware modules are divided by functional requirements, compatible and extended design concepts, as shown in Figure 1. The hardware consists of transformer monitoring basic hardware, reactive power compensation basic hardware, distributed power access and energy storage monitoring basic hardware, relay protection basic hardware and common hardware. The hardware platform uses high-speed dual-core processing chip OMAP and high-speed serial bus 16 as the core technology, including large-capacity programs FLASH, RAM, I/O interface, IIC, SPI, SD interface and other resources. The hardware platform is based on the high-speed serial bus 16 expansion board, which simplifies the complexity of the hardware and increases the flexibility and reliability of the hardware.

The overall design of the terminal software adopts the idea of layered design. The overall software architecture is divided into data layers 21, Process layer 22 and application layer 23. The data layer 21 is the basis for the terminal to implement functions, and realizes collection of various data for the operation of the system. The process layer 22 is responsible for managing system resources when the terminal is running, and performs task scheduling and data transfer between tasks. The application layer 23 refers to the implementation of corresponding application functions according to the actual application requirements of the terminal, such as communication protocol management, human-machine interface, data acquisition, and data output. The overall architecture of the terminal software is shown in Figure 2.

The device considers the function integration with equipments such as distribution transformer monitoring, station concentrator, reactive power compensation device, and power quality monitoring device, and combines the construction requirements of intelligent distribution network, integrated state monitoring, distributed power supply and energy storage access. New features such as monitoring, demand side management and relay protection. The function implemented by the device is shown in Figure 3.

With the gradual maturity and wide application of IEC61850 technology, its technology and methods are gradually extended to other applications beyond substation automation. The device adopts the technology and method of IEC61850 to model the communication of intelligent power distribution terminal, and regulates the mapping relationship between the data interface, communication mode, information exchange service and communication mode of the power distribution terminal, and realizes the standardized transmission of information. Its specific information is modeled as follows:

The device is divided into three logical devices (LD), LDi mainly completes the conventional SCADA function, realizes remote signaling, telemetry, and remote control; LD ₂ mainly performs protection and fault detection functions; LD ₃ mainly completes intelligent power module management. Each logical device contains LLN0 and LPHD. LLN0 contains information about the physical device IED, controls the IED self-test, etc.; LPDH models the public information of the physical device, such as nameplate information, device self-test results, and the like.

LDx (measurement control)

LLN0 LPDH

CXWI (switch controller) XSWI (load switch)

TVT (Voltage Transformer) TCT (Current Transformer)

MMUX (measurement) GGIO (general process)

MHAI (harmonic, intermittent wave) MSQI (phase sequence and imbalance)

LD ₂ (protection)

LLN0 LPDH

PIOC (instantaneous overcurrent) PTOC (time limit overcurrent)

PSDE (ground fault) RFLO (fault location)

DI (direction component)

LD ₃ (power supply) LLNO LPDH

ZBAT (battery) ZBTC (battery charge management)

Intelligent distribution terminal information model

The information exchange of the power distribution terminal includes information exchange between the primary station and the terminal, the terminal and the terminal, the terminal and the process layer 22 device current transformer, the voltage transformer, the switch, the distribution transformer, and the like. In IEC61850, the information exchange of distribution terminals is mainly realized by the client/server model, the generic object (GOOSE) model for substation events, the sampled value transfer model, and the time peer model.

According to IEC61850 standard, the terminal will use the information distribution service is mapped to a specific exchange communication mode ₀

1 Client/server model, mapped to manufacturing message specification MMS (Manufacturing Message Specification) or IEC60870-5-101 I 104 implementation.

2 GOOSE messages, mapped directly to the ISO/IEC 8802-3 Ethernet data link layer with reference to IEC 61850-8-1.

3 Use value transmission, and map according to IEC61850-9-2.

4 time peers are mapped using Simple Network Time Protocol (SNTP).

In addition, the device adopts the self-description function of the IEC61850-6 standard, which replaces the manual configuration and modification of the telecontrol protocol point table. The self-describing ICD file is automatically generated by the hardware encoder. The power distribution master station obtains the ICD file of the intelligent power distribution terminal through FTP, and parses out the three remote information table and network topology information. The power distribution main station SCADA system can be implemented according to this. Set the automatic generation of protocol point tables and libraries. The self-description function of the distribution automation terminal can effectively improve the debugging efficiency of the on-site construction. It simplifies the "point-by-point test" of the previous telecontrol protocol point table to "spot verification", and also facilitates the distribution automation system or equipment upgrade. After the fast recovery operation, its self-describing documents can also be used as the basis for defining the responsibility for the correctness of information transmission between the primary station and the plant.

Summary of effects:

The novel distribution intelligent terminal based on IEC61850 standard proposed by the invention realizes the basic requirements of the current intelligent distribution network for the terminal function, and the modular design satisfies the requirement of expanding different functions, and the device is standardized by adopting the IEC61850 standard. Communication protocol, driving the intelligent power distribution terminal It plays a significant role in promoting scalability, scalability and interoperability. The application of the device realizes a wider distribution network monitoring, which reflects management benefits and economic benefits, and establishes a more reliable and flexible distribution network communication system. The project will carry out more in-depth research in the field of intelligent power distribution terminals, and successively carry out related work such as commissioning and trial operation of intelligent power distribution terminals, and accumulate more experience for the construction of smart distribution networks.

The power distribution intelligent terminal based on the IEC61850 standard proposed by the embodiment of the present invention realizes the basic requirements of the current smart distribution network for the terminal function, and the modular design satisfies the requirement of expanding different functions, and the device room is standardized by adopting the IEC61850 standard. The communication protocol promotes the intelligent distribution terminal in terms of openness, expansion and interoperability. The distribution intelligent terminal application realizes a wider distribution network monitoring, which reflects the management benefits and Economic benefits, established a more reliable and flexible distribution network communication system, with strong promotion and application value.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the scope of the present invention. Inside.

Claims

Claim

1. An intelligent power distribution terminal based on the IEC61850 standard, wherein the intelligent power distribution terminal comprises:

The intelligent power distribution terminal according to claim 1, wherein the high-speed serial bus communicates with the dual-core data processing board, the analog acquisition board, the remote information board, and the remote control board through a high-speed bus interface. The components are connected to the power module.

3. An intelligent power distribution system based on the IEC61850 standard, characterized in that the intelligent power distribution system comprises:

Application layer, including human-machine interface function module and communication interface function module, used according to the actual terminal Application requirements, to achieve the corresponding application functions.

4. The intelligent power distribution system of claim 3, wherein the functional modules of the intelligent power distribution system are:

Distributed power access monitoring and energy storage device monitoring function module, with access device impact analysis, access device fault diagnosis, isolation control function, remote wired/wireless communication function and device pull The hand information notification function determines the optimal switching combination and the optimal configuration type and configuration capacity of the distributed power supply, solves the problem of insufficient power supply during the peak hours of power consumption, and improves the impact disturbance caused by the switching control and access process to the smart distribution network. ;

The intelligent power distribution system according to claim 3, wherein the intelligent power distribution system uses the technology and method of IEC61850 to model the communication of the intelligent power distribution terminal, and regulates the data interface and the communication mode of the power distribution terminal. , the mapping relationship between information exchange services and communication methods, to achieve standardized transmission of information;

1) Information modeling

2) Information exchange

3) Service mapping

According to the standard of IEC61850, the information exchange service used by the power distribution terminal is mapped to a specific communication method; 1 client/server model, mapped to the Manufacturing Message Specification (MMS) or IEC60870-5-101 I 104;

3 using value transmission, mapping with reference to IEC61850-9-2;

4 time peers use Simple Network Time Protocol (SNTP) for mapping;