CN115378121A - Power distribution integration terminal acquisition system based on multiple communication modes - Google Patents
Power distribution integration terminal acquisition system based on multiple communication modes Download PDFInfo
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- CN115378121A CN115378121A CN202210153027.9A CN202210153027A CN115378121A CN 115378121 A CN115378121 A CN 115378121A CN 202210153027 A CN202210153027 A CN 202210153027A CN 115378121 A CN115378121 A CN 115378121A
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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
- H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00006—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
- H02J13/00022—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 wireless data transmission
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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
- H02J13/00028—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 involving the use of Internet protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0209—Architectural arrangements, e.g. perimeter networks or demilitarized zones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a power distribution fusion terminal acquisition system based on multiple communication modes, which comprises a system physical structure, system hardware and software, wherein the system physical structure is composed of a master station, a communication channel and acquisition equipment, wherein the master station part is independently networked and is safely isolated from a marketing application system, other application systems and a public network channel by adopting a firewall to ensure the information safety of the system, and the master station mainly comprises a database server, a disk array, an application server, a front server, an interface server, a working station, a GPS clock, firewall equipment and related network equipment.
Description
Technical Field
The invention relates to the technical field of acquisition systems, in particular to the technical field of acquisition systems of power distribution terminals.
Background
With the continuous development of the construction of the smart power grid, the construction of an intelligent power utilization system is also an important part in the construction of the smart power grid, and a power utilization information terminal acquisition system is a core support platform for intelligent power utilization. However, the intelligent power utilization link has the characteristics of multiple acquisition points and multiple acquisition modes, so that the power utilization information terminal acquisition system adopted by the power enterprises at present has many defects. In practical engineering, many problems occur, such as that the communication mode and the communication quality of the acquisition equipment cannot be guaranteed, the communication efficiency is low, interconnection and intercommunication are difficult, the data transmission and data storage formats of various acquisition equipment are not uniform, data cannot be shared in time or cannot be sufficiently shared, and various power consumption analysis functions cannot be realized. Therefore, establishing an advanced power utilization information terminal acquisition system capable of meeting the requirements of various communication modes becomes a hot point problem in the aspect of current power utilization management.
Disclosure of Invention
The invention provides a power distribution integration terminal acquisition system based on a multi-communication mode, which solves the problems that the communication mode and the communication quality can not be ensured, the communication efficiency is low, the interconnection and the intercommunication are difficult, the data transmission and the data storage formats of various acquisition devices are not uniform, and the data can not be shared in time or can not be shared sufficiently in the prior art.
The technical solution adopted by the present invention to solve the above technical problems is as follows:
the power distribution integration terminal acquisition system based on multiple communication modes comprises a system physical structure, system hardware and software, wherein the system physical structure consists of a master station, a communication channel and acquisition equipment, wherein the master station is independently networked and is safely isolated from a marketing application system, other application systems and a public network channel by adopting a firewall to ensure the information safety of the system;
the functional modules of the system software are divided into communication service, data service and application functions, the communication service mainly comprises 3 modules which are respectively a multi-channel access module, a multi-protocol processing module and a communication quality management module, wherein the multi-channel access module is mainly responsible for accessing and processing various channels, the multi-protocol processing module is mainly responsible for processing different data transmission protocols of various field terminals, and the communication quality management module is mainly responsible for improving the communication quality through checking and error correction;
the data service mainly comprises a data modeling module, a data management module and an external data interface module, wherein the data modeling module is used for modeling various collected original power utilization field data in order to realize unified processing of different terminal data, the data are unified into a standard data format and used by a background, the data management module is used for carrying out targeted classification and arrangement on the data, technical support is provided for power utilization management and decision making, functions of data filtering, data reasonability checking, data calculation, data storage and the like are realized, the external data interface module is connected with a marketing management application system, and data support and background guarantee are provided for marketing services;
the application functions comprise a system data acquisition function, a control function and comprehensive application, and the aim is to extract and integrate data on the basis of data service, extract data for application modules in an application layer and coordinate functional processing and result display of functional sub-modules, and the functions are to provide concise and visual realization of various application functions on the basis of channel service and data service;
the communication channel can be divided into a wired channel, an optical channel and a wireless channel according to physical properties, and is communicated with the main station through a communication interface of the front-end processor, and the front-end processor is directly related to the access of different physical channels and is responsible for the access of various physical channels;
the multi-protocol processing module is organically combined by multi-terminal communication protocol processing, a meter reading protocol assembly and a multi-channel access module to complete the functions, and the multi-terminal communication protocol processing calls GPRS, CDMA, wireless channels, optical fibers and microwave communication equipment interface driving through a unified interface to realize communication in different communication modes; the protocol management component calls a protocol library consisting of a system standard communication protocol, a load management protocol, a DNP protocol, a 101 protocol and a distribution transformer monitoring protocol through a unified interface; the meter reading protocol component calls a meter reading protocol library composed of a national standard 645 protocol and a common protocol through a unified interface, the application calling the components comprises a front-end processor and data acquisition monitoring, and a multi-protocol processing module analyzes the format of a message after receiving the message and is used for judging the type of the protocol subsequently. The protocol discrimination judges which protocol is according to different message formats. The specification library encapsulates a specific specification characteristic algorithm, and the specific specification characteristic algorithm is used by a specification scheduling module and a specific specification analysis module. The protocol analysis is realized by packaging different specific algorithms aiming at different protocol algorithms, and finally, protocol messages are analyzed into a standard data acquisition format;
and the data modeling module adopts a common information model CIM to model the collected electricity utilization information data.
The invention adopts the technical proposal to achieve the following beneficial effects: the communication mode and the communication quality are ensured, the communication efficiency is higher, the interconnection and the intercommunication are realized, the data transmission and the data storage formats of various acquisition devices are unified, and the data can be shared in time.
Drawings
FIG. 1 is a diagram of a metrology model of the present invention;
FIG. 2 is a diagram of class structure in a measurement packet according to the present invention.
Detailed Description
The power distribution integration terminal acquisition system based on multiple communication modes comprises a system physical structure, system hardware and software, wherein the system physical structure consists of a master station, a communication channel and acquisition equipment, wherein the master station is independently networked and is safely isolated from a marketing application system, other application systems and a public network channel by adopting a firewall to ensure the information safety of the system;
the functional modules of the system software are divided into communication service, data service and application functions, the communication service mainly comprises 3 modules which are respectively a multi-channel access module, a multi-protocol processing module and a communication quality management module, wherein the multi-channel access module is mainly responsible for accessing and processing various channels, the multi-protocol processing module is mainly responsible for processing different data transmission protocols of various field terminals, and the communication quality management module is mainly responsible for improving the communication quality through checking and error correction;
the data service mainly comprises a data modeling module, a data management module and an external data interface module, wherein the data modeling module is used for modeling various collected original power utilization field data in order to realize unified processing of different terminal data, the data are unified into a standard data format and used by a background, the data management module is used for carrying out targeted classification and arrangement on the data, technical support is provided for power utilization management and decision making, functions of data filtering, data reasonability checking, data calculation, data storage and the like are realized, the external data interface module is connected with a marketing management application system, and data support and background guarantee are provided for marketing services;
the application functions comprise a system data acquisition function, a control function and comprehensive application, and the aim is to extract and integrate data on the basis of data service, extract data for application modules in an application layer and coordinate functional processing and result display of functional sub-modules, and the functions are to provide concise and visual realization of various application functions on the basis of channel service and data service;
the communication channel can be divided into a wired channel, an optical channel and a wireless channel according to physical properties, and is communicated with the main station through a front-end processor communication interface, and the front-end processor is directly related to the access of various physical channels and is responsible for the access of various physical channels;
when data is transmitted over a communication channel, the data signal frames transmitted by the transmitter are inevitably erroneous after being transmitted to the receiver via the network due to the imperfect transmission characteristics of the channel and the influence of noise. Therefore, the receiver must take certain measures to detect the error bit and take certain measures to correct the error bit.
The basic principle of data verification is as follows: the transmitter adding an error detection code to the transmitted data signal frame and taking the error detection code as a function of the transmitted data signal; the receiver performs the same calculation according to the definition of the function, then compares the two results, and if the results are the same, the receiver considers that no error bit exists; otherwise, the data frame is considered to have error bits. The actually adopted error detection method mainly comprises the following steps: parity and CRC cyclic redundancy check.
The parity transmitter adds a parity bit to the signal bit of each word in the data frame, and the receiver checks the parity bit. The original number is Rn (n bit 2 carry number), 1 bit Rs is added, and the value is '0' or '1', a new number is formed, so that the number of 1 in the number is odd number (or even number), and the number is called an odd (even) check code. After the parity code is transmitted to the destination, the program checks that the obtained number does not satisfy the odd (even) definition, which indicates that the data transmission is wrong. Only errors can be checked, no errors can be determined, and the location of errors cannot be determined, so that error correction is not possible.
The CRC code is an error detection mode which is mostly used in a synchronous communication mode, has strong error detection and correction capability, can be used for correcting independent random errors or burst errors, and is largely used for error checking in communication, network, disk reading and the like. CRC code check is performed by using a bit sequence of a processed packet as a coefficient of a binary polynomial a (x), dividing the coefficient by a generator polynomial g (x) predetermined by a transmitting side and a receiving side, adding a remainder P (x) obtained as a code for RCC check to the original packet, and transmitting the remainder P (x) to the receiving side. The receiving party removes the received message B (x) by the same g (x) and removes the message by the same generating polynomial, and if the remainder value of the obtained result is zero, the received data can be judged to be correct; otherwise, the error is generated in the transmission process, and the transmission end retransmits the error and restarts the verification until the error is avoided.
The multi-protocol processing module is organically combined by multi-terminal communication protocol processing, a meter reading protocol assembly and a multi-channel access module to complete the functions, and the multi-terminal communication protocol processing calls GPRS, CDMA, wireless channels, optical fibers and microwave communication equipment interface driving through a unified interface to realize communication in different communication modes; the protocol management component calls a protocol library consisting of a system standard communication protocol, a load management protocol, a DNP protocol, a 101 protocol and a distribution transformer monitoring protocol through a unified interface; the meter reading protocol component calls a meter reading protocol library composed of a national standard 645 protocol and a common protocol through a unified interface, the application calling the components comprises a front-end processor and data acquisition monitoring, and a multi-protocol processing module analyzes the format of a message after receiving the message and is used for judging the type of the protocol subsequently. The protocol discrimination judges which protocol is according to different message formats. The specification library encapsulates a specific specification characteristic algorithm, and the specific specification characteristic algorithm is used by a specification scheduling module and a specific specification analysis module. The protocol analysis is realized by packaging different specific algorithms aiming at different protocol algorithms, and finally, protocol messages are analyzed into a standard data acquisition format;
the power utilization acquisition system has a lot of application terminals and communication protocols, so the data structure used is complicated. In order to realize the unified management of different terminal data, the data collected by various terminals on site need to be collected and arranged to obtain a unified standard data format for the background to use. The function of this module: the subsystem realizes unified modeling of the accessed electricity utilization information data, and forms a unified data format required by the electricity utilization acquisition system.
And modeling the collected power utilization information data by adopting a Common Information Model (CIM). CIM provides a relatively universal standard for modeling of power systems, and is widely accepted by various power research units and manufacturers. The CIM model is adopted to represent the power system, so that the real world is more intuitively and accurately represented; the method is more consistent with the software development rule, the development time is shortened, and the development cost is reduced; the reusability, maintainability and expandability of the software are greatly improved. Most element data models in the distribution network can be directly inherited from the CIM model for use, and due to the fact that the distribution network has many characteristics, modeling needs to be conducted again.
The measurement model is shown in fig. 1, and mainly includes: measurement class (Measurement), measurement Value class (Measurement Value), and Unit class (Unit). A Power System Resource (PSR) may have 0 to more measurements associated with it, and a measurement may have one or more measurements. Each Measurement instance represents a technical quantity of a Power System resource. Each MeasurementValue of a Measurement represents a current value of a technical quantity from a single data source. The source attribute of MeasurementValueQuality indicates whether the source actually provides the current value, or whether the value has been replaced or is a default value. All classes included in the measurement package are shown in fig. 2.
On the basis of analyzing the classes related to the electricity utilization information acquisition in the CIM, unified data modeling is carried out on the electricity utilization information in multiple communication modes, and the established information model is as follows:
controls (Control)
The Control class is used for monitoring or device Control. It represents the control output for changing the state of a process, for example: a collection/mining device, a setpoint value or a raise/lower command. The attributes of the control classes are shown in the following table:
limit class (Limit)
The limit class specifies a limit value for the measurement. There are typically several limits for a measurement, which are stored in the limit set class. The actual meaning and use of a Limit instance (i.e., it is an alarm or warning Limit, or an upper or lower Limit) is not known from the Limit class. However the name of the example of Limit may indicate its intended meaning and use. The attributes of the limit class are shown in the following table:
| properties | Type (B) | Description of the invention |
| value | (Numeric) | Monitoring value |
Limit set (Limitset)
The limit set class is used to assign an associated set of limits to a measurement. Depending on seasonal or other variations, a measurement may have multiple threshold sets. This case is characterized by name and descriptive attributes. The same set of limits may be used for multiple measurements, particularly the percentage limits. The attributes of the limit set class are shown in the following table:
measurement (Measurement)
A metrology class describes any one of measured, calculated or non-measured non-calculated quantities. Any one device may contain the measurements. The association of power system resources and measurements is used to embody this use of the measurements and is included in a naming hierarchy based on device containers.
Some of the measurements represent quantities related to a particular sensor location, such as a voltage transformer (PT) on a bus bar segment or a Current Transformer (CT) on a line between a circuit breaker and an isolation device. The sensing locations are not embodied in the association of power system resources with measurements, but rather in the association of measurements with endpoints that can unambiguously define the sensing locations. This position is defined by the relationship of the end point to the conductive device. There are two possible routes:
Measurement-Terminal-ConnectivityNode-Terminal-ConductingEquip ment；
Measurement-Terminal-ConductingEquipment
the second route is the only one allowed. For a particular measurement, simultaneous use of the measurement-power system resource association and the measurement-endpoint association is allowed. The measure-power system resource association defines measures in the named hierarchy, and the measure-endpoint association defines where to place the measures in the network topology. The attributes of the measurement classes are shown in the following table:
measurement value class (MeasurementValue)
The measurement value class is used to represent the current state of the measurement. A state value is a measured instance from a particular source. A measurement may be associated with a plurality of status values, each representing a different source of the measurement. The attributes of the measurement classes are shown in the following table:
electrically conductive devices (connected equipment) (core package)
The class of conductive devices is an integral part of the power system and is designed to carry current or be associated with a conductive connection. The connectingEquipment is contained in an equipmentContainer, which may be a Prestation, or a VoltageLevel or a Bay in a Prestation. The properties of the conductive device class are shown in the following table:
naming class (Naming) (core bag)
The named class is a root class that provides common named attributes for all classes that require named attributes. The attributes of the named classes are shown in the following table:
absolute date time class (AbsolutedDateTYme) (Domain package)
The format of the date and time is "yyyy-mm-ddThh: mm: ss ", conforms to the extended format and universal coordinated time (UTC) used by the IS08061 standard, and does not employ a local time zone. The absolute time of day class attributes are shown in the following table:
active power class (ActivePower) basic model
I.e., the product (megawatts) of the effective value of the voltage (RMS) and the effective value of the in-phase component of the current (RMS). The active power class attributes are shown in the following table:
| properties | Types of | Description of the invention |
| value | (Float) | |
| units | (String) |
Admittance-like (Admitance) basic type
Admittance type is the ratio of current to voltage. Admittance class attributes are shown in the table below:
| properties | Type (B) | Description of the invention |
| value | (Float) | |
| units | (String) |
Angle (degree) class (AngleDegrees) basic type
The angle (degree) class is an angle in degrees. The angle (degree) class attributes are shown in the following table:
| properties | Type (B) | Description of the preferred embodiment |
| value | (Float) | |
| units | (String) |
Angle (radian) class (AngleRadians) basic model
The angle (radian) class is the phase angle in radians. The angle (radian) class attributes are shown in the following table:
| properties | Types of | Description of the preferred embodiment |
| value | (Float) | |
| units | (String) |
Apparent power class (AppletPower) base model
The apparent power class is the product of the effective value of the voltage and the effective value of the current (mega volt ampere). The apparent power class attributes are shown in the following table:
| properties | Types of | Description of the invention |
| value | (Float) | |
| units | (String) |
Conductance (Conductance) basic pattern
The number is multiplied by the voltage to obtain the power loss in the corresponding circuit. The real part of the admittance. The conductivity type attributes are shown in the following table:
| properties | Type (B) | Description of the invention |
| value | (Float) | |
| units | (String) |
Current flow basic model
The unit of the current is ampere positive number indicates that current flows from the conductive device (connecting equipment) into the connection node (connecting node). The current-like properties are shown in the following table:
| properties | Type (B) | Description of the preferred embodiment |
| value | (Float) | |
| units | (String) |
Damping (system frequency characteristic) class (damper) basic model
The ratio of the magnitude of the change in power (MW) to the magnitude of the change in frequency, referenced to the system MVA reference. Typical values are 1.0-2.0. Damping (system frequency characteristic) class properties are shown in the following table:
| properties | Type (B) | Description of the invention |
| value | (Float) | |
| units | (String) |
Daily type name class (DayTypeName) enumeration type
Name of day type. The attributes of the day type name class are shown in the following table:
| properties | Type (B) | Description of the invention |
| weekday | () | |
| weekend | () | |
| holiday | () |
Frequency class (Frequency) basic pattern
The frequency class is the number of cycles per second. The frequency class properties are shown in the following table:
| properties | Type (B) | Description of the invention |
| value | (Float) | |
| units | (String) |
Power factor class (Powerfactor) basic model
The power factor class is the ratio of active power to on-going power. The power factor class attributes are shown in the following table:
| attribute | Type (B) | Description of the invention |
| value | (Float) | |
| units | (String) |
Reactive power class (reactive power) basic model
The reactive power class is the product of the effective value of the voltage and the effective value of the quadrature component of the current (megaVAs). The reactive power class attributes are shown in the following table:
| properties | Type (B) | Description of the invention |
| value | (Float) | |
| units | (String) |
Transformer control mode type (transformcondorlmode) enumeration type
The control modes of the transformer are as follows: uncontrollable, local control, voltage control, reactive control. The transformer control mode class attributes are shown in the following table:
| properties | Type (B) | Description of the invention |
| off | () | |
| local | () | |
| volt | () | |
| MW | () | |
| mVAr | () |
Base value of Voltage class (Voltage)
Value in kV. The voltage class attributes are shown in the following table:
| attribute | Type (B) | Description of the invention |
| value | (Float) | Value in kV |
| units | (String) |
Season class ((Season)
The season class is a period of time specified in a year. For example, spring, summer, autumn, winter. Attributes of Season. The seasonal class attributes are shown in the following table:
| properties | Type (B) | Description of the invention |
| endDate | (AbsoluteDateTime) | Date of end of season |
| startDate | (AbsoluteDateTime) | Date of beginning of season |
Electric energy users (EnergyConsumer) (wire bag)
A general power consumer-a power utilization node in a power system model. The electric energy user class attributes are shown in the following table:
power transformers (PowerTransformer)
Power transformers, i.e. an electrical device consisting of two or more coupled windings, may have a core or no core, for mutual coupling between electrical circuits. The transformer can be used to control the voltage and phase shift (active power flow). The attributes of the power transformer class are shown in the following table:
Claims (1)
1. distribution fusion terminal acquisition system based on many communication modes, its characterized in that: the system comprises a system physical structure, system hardware and software, wherein the system physical structure comprises a main station, a communication channel and acquisition equipment, wherein the main station is independently networked and is safely isolated from a marketing application system, other application systems and a public network channel by adopting a firewall to ensure the information safety of the system;
the functional modules of the system software are divided into communication service, data service and application functions, the communication service mainly comprises 3 modules which are respectively a multi-channel access module, a multi-protocol processing module and a communication quality management module, wherein the multi-channel access module is mainly responsible for accessing and processing various channels, the multi-protocol processing module is mainly responsible for processing different data transmission protocols of various field terminals, and the communication quality management module is mainly responsible for improving the communication quality through checking and error correction;
the data service mainly comprises a data modeling module, a data management module and an external data interface module, wherein the data modeling module is used for modeling various collected original power utilization field data in order to realize the unified processing of different terminal data, the data are unified into a standard data format and are used by a background, the data management module is used for carrying out targeted classification and arrangement on the data, technical support is provided for power utilization management and decision making, the functions of data filtering, data rationality checking, data calculation, data storage and the like are realized, the external data interface module is connected with a marketing management application system, and data support and background guarantee are provided for marketing business;
the application functions comprise a system data acquisition function, a control function and comprehensive application, and the aim is to extract and integrate data on the basis of data service, extract data for application modules in an application layer and coordinate functional processing and result display of functional sub-modules, wherein the functions are to provide concise and visual realization of various application functions on the basis of channel service and data service;
the communication channel can be divided into a wired channel, an optical channel and a wireless channel according to physical properties, and is communicated with the main station through a communication interface of the front-end processor, and the front-end processor is directly related to access of different physical channels and is responsible for access of various different physical channels;
the multi-protocol processing module is organically combined by multi-terminal communication protocol processing, a meter reading protocol assembly and a multi-channel access module to complete the functions, and the multi-terminal communication protocol processing calls GPRS, CDMA, wireless channels, optical fibers and microwave communication equipment interface driving through a unified interface to realize communication in different communication modes; the protocol management component calls a protocol library consisting of a system standard communication protocol, a load management protocol, a DNP protocol, a 101 protocol and a distribution transformer monitoring protocol through a unified interface; the meter reading protocol component calls a meter reading protocol library consisting of a national standard 645 protocol and a common meter protocol through a unified interface, the application of calling the components comprises a front-end processor and data acquisition monitoring, a multi-protocol processing module receives a message and analyzes the message format for judging the protocol type later, the protocol discrimination judges which protocol is according to different message formats, the protocol library encapsulates a specific protocol feature algorithm, the specific protocol feature algorithm is used by a specific protocol analysis module after passing through a protocol scheduling module, the protocol analysis is realized by encapsulating different specific algorithms aiming at different protocol algorithms, and finally the message protocol is analyzed into a standard data acquisition format;
and the data modeling module adopts a common information model CIM to model the collected electricity utilization information data.
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