CN117527923B - Data acquisition system and method for electric power system - Google Patents
Data acquisition system and method for electric power system Download PDFInfo
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Classifications
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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
- H04L69/08—Protocols for interworking; Protocol conversion
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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
- H02J13/00002—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 monitoring
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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
- H02J13/00022—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
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
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- 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
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- H—ELECTRICITY
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- 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
- H04L69/26—Special purpose or proprietary protocols or architectures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention provides a data acquisition system and a data acquisition method of an electric power system, which relate to the technical field of electric power communication, wherein the data acquisition system of the electric power system obtains data packets of an OPC standard protocol according to the data type and communication message of the electric power system; setting data bit number parameters of an OPC standard protocol according to the communication message and the data packet; obtaining power data of the power system according to the data packet and the data bit number parameters; according to the data grouping and the data bit number parameters of the OPC standard protocol, obtaining OPC data corresponding to the power data in the OPC standard protocol and obtaining an OPC data source according to the OPC data; finally, the data read request provides the power data of the corresponding OPC data source. According to the invention, the data grouping and the parameters of the OPC standard protocol are set for each power system so as to adapt to different power protocol types, and the interface software application of different communication protocol types is reduced, so that the burden of the hardware equipment of the server is lightened, and the condition that the system runs slowly is avoided.
Description
Technical Field
The invention relates to the technical field of power communication, in particular to a power system data acquisition system and a method.
Background
In the power industry, there are many independent power systems, each power system controls communication between a power meter and equipment through a related power protocol, and usually data of the power meter and equipment needs to be collected into a real-time database or other data acquisition system software and then provided for a corresponding upper application system in a unified manner, so that monitoring of data of the power system is realized.
In the prior art, because of various standards of the power protocol, the data communication between the upper application system and the power instrument and equipment is very difficult, and the data can be packaged and packed only by the power instrument and equipment which are accessed into the power protocol converter or the power monitoring software system through hardware equipment such as the power protocol converter or a software system such as the power monitoring software system, so that the data can be uniformly converted into national standard power protocol standards which are relatively standard, and then the data of the power system can be monitored by external communication. However, as a plurality of sets of interface software with different communication protocol types support the collection of the data of the power system, the requirements on the hardware equipment of the server are increased, and the situation that the system is slow to operate due to excessive running interface software occurs in the server of the real-time database or the servers of other data collection systems.
Disclosure of Invention
The invention solves the technical problem of how to improve the communication effect between an upper application system and a power system.
The invention provides a data acquisition system of an electric power system, which comprises a data acquisition configuration unit, a data conversion unit and a service unit, wherein the data acquisition configuration unit comprises a communication port configuration subunit, an acquisition data configuration subunit and a data acquisition subunit;
the communication port configuration subunit is configured to: setting communication configuration of serial port communication and network communication according to the power system;
the acquired data configuration subunit is configured to: according to the power protocol of the power system, a communication message of the power protocol is obtained;
Obtaining data packets of an OPC standard protocol according to the data type of the power system and the communication message;
setting data bit number parameters of the OPC standard protocol according to the communication message and the data packet;
The data acquisition subunit is configured to: establishing connection with the power system according to the communication configuration of the serial port communication and the network communication, and obtaining power data of the power system according to the data packet and the data bit number parameter;
The data conversion unit is used for: obtaining OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
Obtaining an OPC data source of the power system according to the OPC data;
The service unit is used for: when a data reading request is received, the power data of the corresponding OPC data source is provided according to the data reading request.
Optionally, the communication port configuration subunit is specifically configured to:
acquiring a serial number of the serial port communication;
according to the equipment parameters of the power system, the baud rate of the serial port communication is obtained;
obtaining a verification mode of the serial port communication according to the power protocol of the power system;
According to the data communication standard of the power system, obtaining the data bit and the stop bit of the serial port communication;
And setting the communication configuration of the serial port communication according to the serial port number, the baud rate, the verification mode, the data bit and the stop bit.
Optionally, the communication port configuration subunit is specifically further configured to:
according to the communication mode of the power system, the IP address and the port number of the host computer of the network communication are obtained;
judging whether the network communication needs to be provided with a standby machine or not;
If so, obtaining the IP address of the standby machine according to the communication mode, and setting the communication configuration of the network communication according to the IP address, the port number and the IP address of the standby machine;
if not, setting the communication configuration of the network communication according to the IP address and the port number of the host.
Optionally, the collected data configuration subunit is specifically configured to:
obtaining a frame type definition of the power protocol according to the communication message and the OPC standard protocol;
Obtaining the data packet according to the uplink data defined by the frame class and the data type of the power system;
According to the definition standard of each group in the data packet in the power protocol, obtaining the name and description of the bit number corresponding to each group and obtaining the address serial number and the scale factor corresponding to the bit number;
And setting the data bit number parameter of the OPC standard protocol according to the address sequence number and the scale factor.
Optionally, the obtaining the data packet according to the uplink data defined by the frame class and the data type of the power system includes:
Obtaining a frame corresponding to each data type in the uplink data according to the uplink data and the data type;
and setting the data packet according to the frame corresponding to the data type.
Optionally, the obtaining the name and description of the bit number corresponding to each group according to the definition standard of each group in the data packet in the power protocol, and obtaining the address serial number and the scale factor corresponding to the bit number includes:
Obtaining the function code corresponding to each group of parameters according to the definition standard;
According to the function code, obtaining the name and description of the corresponding bit number of each group;
obtaining the address serial number of each bit number according to the arrangement sequence of the function codes in the definition standard;
and taking the coefficient corresponding to the function code in the definition standard as the scale factor.
Optionally, the data conversion unit is specifically configured to:
Obtaining the data value of the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
obtaining a time stamp according to the acquisition time of the electric power data;
obtaining the quality code information according to the credibility of the electric power data;
adding the time stamp and the quality code information to the data value to obtain the OPC data corresponding to the power data in the OPC standard protocol;
And obtaining an OPC data source of the power system according to the OPC data.
Optionally, the obtaining the OPC data source of the power system according to the OPC data includes:
and classifying and storing the OPC data according to the data packets to obtain the data packets of the power data, and taking the data packets as the OPC data sources.
Optionally, the service unit is specifically configured to:
Obtaining a time range of the power data according to the data reading request;
and acquiring the power data in the time range from the OPC data source.
The invention also provides a data acquisition method of the power system, which comprises the following steps:
Setting communication configuration of serial port communication and network communication according to the power system;
according to the power protocol of the power system, a communication message of the power protocol is obtained;
Obtaining data packets of an OPC standard protocol according to the data type of the power system and the communication message;
setting data bit number parameters of the OPC standard protocol according to the communication message and the data packet;
establishing connection with the power system according to the communication configuration of the serial port communication and the network communication, and obtaining power data of the power system according to the data packet and the data bit number parameter;
Obtaining OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
Obtaining an OPC data source of the power system according to the OPC data;
when a data reading request is received, the power data of the corresponding OPC data source is provided according to the data reading request.
According to the data acquisition system and method of the electric power system, communication messages of the electric power protocol are obtained according to the electric power protocol of the electric power system, and then data packets of an OPC standard protocol are obtained according to the data type and the communication messages of the electric power system; acquiring power data of the power system according to the data packet and the data bit number parameter, and acquiring corresponding OPC data of the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol; according to different protocol of the power system, the invention sets communication configuration and obtains communication messages, and then converts the communication messages into data packets and parameters of the OPC standard protocol so as to adapt to different power protocol types, and does not need to rely on hardware equipment or an additional converter to perform data conversion, so that a plurality of sets of interface software of different communication protocol types are reduced, the burden of the hardware equipment of a server is reduced, and the condition of slow system operation is avoided. After connection with the power system is established, connection with the power system is established according to the communication configuration and the data grouping, power data are acquired, the acquired power data are converted into data of an OPC standard protocol, and further, the power data of a corresponding OPC data source can be provided according to a data reading request, so that the data communication of the power system is more flexible, and the required power data can be effectively provided.
Drawings
FIG. 1 is a schematic diagram of a data acquisition system of an electrical power system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a multi-way communication interface according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of an interface for setting IP addresses and port numbers according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of frame class definitions for CDT protocol in another embodiment of the invention;
FIG. 5 is a schematic diagram of definition criteria for CDT protocol in another embodiment of the invention;
FIG. 6 is a schematic diagram of a telemetry data packet configuration interface in accordance with another embodiment of the present invention;
Fig. 7 is a flowchart of a method for collecting data of a power system according to another embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention provides a data acquisition system of an electric power system, which comprises a data acquisition configuration unit, a data conversion unit and a service unit, wherein the data acquisition configuration unit comprises a communication port configuration subunit, an acquisition data configuration subunit and a data acquisition subunit.
Specifically, the data acquisition configuration unit, the data conversion unit and the service unit are connected in sequence, and the data acquisition configuration unit comprises a communication port configuration subunit, an acquisition data configuration subunit and a data acquisition subunit.
The communication port configuration subunit is configured to: and setting communication configuration of serial port communication and network communication according to the power system.
Specifically, the communication port configuration subunit sets communication parameters matched with the power system according to the communication configuration of serial port communication and network communication of the power system, so as to construct a communication link between the software system and the power system, and the setting object of the communication port configuration subunit is divided into two different communication ports, namely a serial port and a network port.
The acquired data configuration subunit is configured to: and obtaining a communication message of the power protocol according to the power protocol of the power system.
Specifically, according to the definition of the power protocol, key information such as the structure, the data field, the verification mode and the like of the communication message can be analyzed.
And obtaining the data packet of the OPC standard protocol according to the data type of the power system and the communication message.
Specifically, the key information of the analyzed communication message is combined with the data type of the power system to obtain the data packet required by the OPC (OLE for Process Control-object connection and embedding) standard protocol, and in the preferred embodiment of the invention, the data packet can be classified into different types of data packets such as remote signaling, remote sensing, remote pulse and the like according to the data type of the power system. The OPC standard protocol is an industrial standard, and comprises a whole set of standard sets of interfaces, attributes and methods, and is used for process control and manufacturing automation systems.
And setting the data bit number parameter of the OPC standard protocol according to the communication message and the data packet.
Specifically, according to the analyzed data and data packets of the communication message, setting data bit number parameters conforming to an OPC standard protocol, so as to ensure that the data can be correctly identified and processed in the OPC protocol.
The data acquisition subunit is configured to: and establishing connection with the power system according to the communication configuration of the serial port communication and the network communication, and obtaining power data of the power system according to the data packet and the data bit number parameter.
Specifically, if the communication configuration includes serial communication, the system establishes a serial connection with the power system according to the serial communication configuration (e.g., baud rate, data bits, stop bits, check bits, etc.). For network communications, a communication arrangement is used to establish a network connection for communication with the power system. And according to the data packet and the data bit number parameters, the system uses the information to send a request to the power system and analyzes the returned data so as to acquire the required power data.
The data conversion unit is used for: and obtaining OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol.
Specifically, the collected power system data are combined with data packets and data bit number parameters of an OPC standard protocol, real-time conversion is carried out according to the OPC standard protocol, and the data are stored, so that OPC data corresponding to the power data in the OPC standard protocol are obtained.
And obtaining an OPC data source of the power system according to the OPC data.
Specifically, OPC data is integrated to form an OPC data source, wherein the OPC data source comprises a real-time data source and a historical data source.
The service unit is used for: when a data reading request is received, the power data of the corresponding OPC data source is provided according to the data reading request.
Specifically, when a data reading request is received, the power data of the corresponding OPC data source is provided according to the data reading request, i.e. the corresponding power data is obtained from the OPC data source. In a preferred embodiment of the present invention, the service unit is an OPC service, which provides a real-time data reading service for a third party data acquisition system such as a real-time database system according to an OPC protocol standard, and provides a temporary history data reading service after the network is abnormally interrupted and recovered.
According to the data acquisition system of the power system, a communication message of the power protocol is obtained according to the power protocol of the power system, and then a data packet of an OPC standard protocol is obtained according to the data type and the communication message of the power system; acquiring power data of the power system according to the data packet and the data bit number parameter, and acquiring corresponding OPC data of the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol; according to different protocol of the power system, the invention sets communication configuration and obtains communication messages, and then converts the communication messages into data packets and parameters of the OPC standard protocol so as to adapt to different power protocol types, and does not need to rely on hardware equipment or an additional converter to perform data conversion, so that a plurality of sets of interface software of different communication protocol types are reduced, the burden of the hardware equipment of a server is reduced, and the condition of slow system operation is avoided. After connection with the power system is established, connection with the power system is established according to the communication configuration and the data grouping, power data are acquired, the acquired power data are converted into data of an OPC standard protocol, and further, the power data of a corresponding OPC data source can be provided according to a data reading request, so that the data communication of the power system is more flexible, and the required power data can be effectively provided.
In the embodiment of the present invention, the communication port configuration subunit is specifically configured to:
acquiring a serial number of the serial port communication;
according to the equipment parameters of the power system, the baud rate of the serial port communication is obtained;
obtaining a verification mode of the serial port communication according to the power protocol of the power system;
According to the data communication standard of the power system, obtaining the data bit and the stop bit of the serial port communication;
And setting the communication configuration of the serial port communication according to the serial port number, the baud rate, the verification mode, the data bit and the stop bit.
In the present embodiment, a serial number for communication can be obtained by a system or hardware configuration. Typically, the serial number is an integer, such as 1,2, or 3, to represent the different serial ports. The baud rate of serial communication can be obtained through the equipment parameters of the power system. The baud rate represents the number of bits transmitted per second, typically expressed in bits per second (bps). According to the power protocol of the power system, a verification mode of serial communication can be obtained. The common verification modes are parity check, no checksum even check, etc. And obtaining the data bit and the stop bit of serial port communication according to the data communication standard of the power system. Typically the data bits may be 5, 6,7 or 8 and the stop bits may be 1 or 2. When the serial number, the baud rate, the checking mode, the data bit and the stop bit are acquired, the communication configuration of the serial communication can be set by using the information. These parameters will be used to subsequently establish a serial communication connection with the power system.
According to the data acquisition system of the power system, the parameters required by serial communication are acquired, and the communication configuration is set so as to perform correct serial communication with the power system.
In the embodiment of the present invention, the communication port configuration subunit is specifically further configured to:
according to the communication mode of the power system, the IP address and the port number of the host computer of the network communication are obtained;
judging whether the network communication needs to be provided with a standby machine or not;
If so, obtaining the IP address of the standby machine according to the communication mode, and setting the communication configuration of the network communication according to the IP address, the port number and the IP address of the standby machine;
if not, setting the communication configuration of the network communication according to the IP address and the port number of the host.
In this embodiment, according to the communication mode of the power system, the IP address and the port number of the host computer for network communication are obtained. The host IP address and port number are important parameters for identifying the communication destination in network communication. Judging whether the network communication needs to be standby, if so, acquiring the IP address of the standby according to the communication mode. Standby machines are typically devices used for redundancy and failover to ensure reliability and continuity of communication. The acquired host IP address, port number, and standby IP address are used to set the communication configuration of the network communication, which, like serial communication, requires information including the host IP address, port number, and the like, in order to establish a network connection with the target device.
In the embodiment of the invention, the software system supports multi-channel communication of a plurality of power systems with different power protocols, namely, not only supports data acquisition and communication of a plurality of power systems with different power protocols such as CDT, IEC104 and the like for data communication, but also supports data acquisition and communication of a plurality of power systems with the same power protocol for data communication, and the software system is distinguished and uniformly managed by different names and ID addresses, wherein the names and the ID addresses can be freely named according to requirements, and OPC service names (OPC ProgID) with different names are formed. In combination with the multi-path communication configuration interface schematic diagram shown in fig. 2, a power system which simultaneously supports two power systems adopting the IEC104 power protocol, 1 power system adopting the IEC101 power protocol and 1 power system adopting the CDT power protocol are shown; two power systems adopting IEC104 power specifications set different names, public addresses (ID addresses) of secondary stations, IP addresses and other basic attributes to distinguish; wherein, in combination with the illustration of fig. 3, the setting of the IP address and the port number is performed in the primary station basic attribute configuration interface schematic diagram of the power system adopting the IEC104 power protocol;
According to the data acquisition system of the power system, the communication port configuration subunit can acquire and set the communication configuration required by network communication according to the communication mode of the power system so as to ensure that the system can perform correct network communication with target equipment.
In the embodiment of the present invention, the collected data configuration subunit is specifically configured to:
obtaining a frame type definition of the power protocol according to the communication message and the OPC standard protocol;
Obtaining the data packet according to the uplink data defined by the frame class and the data type of the power system;
According to the definition standard of each group in the data packet in the power protocol, obtaining the name and description of the bit number corresponding to each group and obtaining the address serial number and the scale factor corresponding to the bit number;
And setting the data bit number parameter of the OPC standard protocol according to the address sequence number and the scale factor.
In this embodiment, according to the communication message and the OPC standard protocol, a frame class definition in the power protocol is obtained. In a preferred embodiment of the present invention, the frame type definition for the CDT protocol is defined as shown in fig. 4, and the frame type definition of the communication message control word is defined according to the OPC protocol standard and the CDT protocol. Four data groups of telemetry, total addition telemetry, telemetry and electric energy pulse are set according to the uplink data defined by the frame type and the data type of the electric power system, and different groups respectively correspond to the uplink data of fig. 4, namely the uplink (uplink) important telemetry (A frame), the secondary telemetry (B frame), the general telemetry C frame, the telemetry state (D1 frame) and the electric energy pulse value (D2 frame), so that frame type analysis is carried out, and communication preparation is carried out for the next data acquisition.
According to the definition standard of each group in the data packet in the power protocol, the name and description of the bit number corresponding to each group are obtained, and the address serial number and the scale factor corresponding to the bit number are obtained.
According to the power system data acquisition system, the acquisition data configuration subunit sets proper data grouping and data bit number parameters according to the definition in the power protocol and the data type of the power system, so as to ensure that the data of the power system are correctly represented and transmitted in the OPC protocol.
In an embodiment of the present invention, the obtaining the data packet according to the uplink data defined by the frame class and the data type of the power system includes:
Obtaining a frame corresponding to each data type in the uplink data according to the uplink data and the data type;
and setting the data packet according to the frame corresponding to the data type.
In this embodiment, first, uplink data is classified according to data types, so as to obtain frames corresponding to each data type. And then, setting data packets according to the frames corresponding to each data type.
In a preferred embodiment of the present invention, four data packets of telemetry, total adding telemetry, telemetry and power pulse are set according to the uplink data defined by the frame type and the data type of the power system, and different groups respectively correspond to the uplink data of fig. 4, namely, the uplink (uplink) important telemetry (a frame), the secondary telemetry (B frame), the general telemetry C frame, the telemetry state (D1 frame) and the power pulse value (D2 frame), and frame type analysis is performed, so as to realize setting of the data packets.
According to the data acquisition system of the power system, the data can be effectively classified and grouped through the definition of the data types and the frame types, so that the requirements of the power system on data transmission are better met.
In the embodiment of the present invention, the obtaining the name and description of the bit number corresponding to each group according to the definition standard of each group in the data packet in the power protocol, and obtaining the address serial number and the scale factor corresponding to the bit number, includes:
Obtaining the function code corresponding to each group of parameters according to the definition standard;
According to the function code, obtaining the name and description of the corresponding bit number of each group;
obtaining the address serial number of each bit number according to the arrangement sequence of the function codes in the definition standard;
and taking the coefficient corresponding to the function code in the definition standard as the scale factor.
In this embodiment, according to the definition standard, the function code corresponding to each group parameter is obtained, in the preferred embodiment of the present invention, by taking the CDT protocol as an example, and combining with the definition standard shown in fig. 5, the function code corresponding to each group can be obtained, when the bit number is set in each group, the bit number name and description are set according to the unified management requirement, and in combination with the description shown in fig. 6, for example, when the bit number is set in the telemetry data group, the corresponding bit number name and bit number description are set according to the unified management requirement, and then according to the definition standard of fig. 5, the address sequence number and the corresponding scale factor are filled in order, that is, the coefficient in fig. 5 is compared, so that the acquisition of related data can be realized when the embedded important telemetry protocol message analysis program runs in the software system, and then the address sequence number and the scale factor are configured through the telemetry data group configuration interface shown in fig. 6, so that the setting of the data bit number parameter of the OPC standard protocol is realized. Wherein, according to CDT protocol, important telemetry, secondary telemetry, general telemetry, remote signaling and protocol message analysis program of electric energy pulse value are respectively embedded in data packet, and the collection of related data can be realized by setting simple address sequence number.
The data acquisition system of the power system directly utilizes the embedded analysis program to acquire and process the data, and does not need to additionally develop a complex data analysis algorithm. The data acquisition process is simplified, so that the system operation is more convenient and faster.
In the embodiment of the present invention, the data conversion unit is specifically configured to:
Obtaining the data value of the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
obtaining a time stamp according to the acquisition time of the electric power data;
obtaining the quality code information according to the credibility of the electric power data;
adding the time stamp and the quality code information to the data value to obtain the OPC data corresponding to the power data in the OPC standard protocol;
And obtaining an OPC data source of the power system according to the OPC data.
In this embodiment, according to the acquired data packet and data bit number parameters, converting the power data into corresponding data values in the OPC standard protocol, so as to ensure that the format and type of the data meet the requirements of the OPC standard; according to the acquisition time of the electric power data, a time stamp is obtained, the acquisition time of the electric power data can be used as the time stamp to be associated with a data value, the time information of data acquisition is indicated, and the recording of the time sequence characteristics of the data and the tracing of the acquisition time point of the data are facilitated; quality code information is obtained based on the reliability of the power data, wherein a quality code of 16bit length is used to identify whether the sampled data is reliable or not according to the OPC protocol, e.g. the OPC standard specifies that the data is normal when the quality code is 192 and invalid when the quality code is 0, and in fact the value of each quality code corresponds to a different state of the data from 0 to 65535.
According to the data acquisition system of the power system, the data conversion unit combines the bit number name and the description information set by the acquired data configuration according to the OPC standard protocol, and attaches the time stamp and the quality code information to the acquired data value in real time, so that an OPC data source is formed.
In an embodiment of the present invention, the obtaining the OPC data source of the electrical power system according to the OPC data includes:
and classifying and storing the OPC data according to the data packets to obtain the data packets of the power data, and taking the data packets as the OPC data sources.
In this embodiment, the data conversion unit attaches a time stamp and quality code information to the collected data value in real time according to the bit number name and description set by the collected data configuration according to the OPC standard protocol, and performs packet organization and storage according to the data packet, and provides the data packet as a complete data packet, thereby forming an OPC real-time and historical data source as an OPC data source.
According to the power system data acquisition system, the OPC data source is built by adding the time stamp and the quality code to the data value, so that the service unit can conveniently use the OPC data source to store data.
In the embodiment of the present invention, the service unit is specifically configured to:
Obtaining a time range of the power data according to the data reading request;
and acquiring the power data in the time range from the OPC data source.
In this embodiment, the OPC service part module acquires OPC service names (OPC ProgID) by registering different power system data, runs a corresponding OPC service, detects an external data reading request in real time, and provides real-time data or history data according to an OPC protocol according to the request.
According to the power system data acquisition system, according to the time range parameters obtained through analysis, power data in a corresponding time range is inquired in an OPC data source, and then an inquiry result is returned to an initiator of a data reading request.
The invention also provides a data acquisition method of the electric power system, which is shown in fig. 7, and comprises the following steps:
S1: setting communication configuration of serial port communication and network communication according to the power system;
S2: according to the power protocol of the power system, a communication message of the power protocol is obtained;
s3: obtaining data packets of an OPC standard protocol according to the data type of the power system and the communication message;
s4: setting data bit number parameters of the OPC standard protocol according to the communication message and the data packet;
s5: establishing connection with the power system according to the communication configuration of the serial port communication and the network communication, and obtaining power data of the power system according to the data packet and the data bit number parameter;
s6: obtaining OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
S7: obtaining an OPC data source of the power system according to the OPC data;
S8: when a data reading request is received, the power data of the corresponding OPC data source is provided according to the data reading request.
According to the data acquisition method of the electric power system, communication messages of the electric power protocol are obtained according to the electric power protocol of the electric power system, and then data packets of an OPC standard protocol are obtained according to the data type and the communication messages of the electric power system; acquiring power data of the power system according to the data packet and the data bit number parameter, and acquiring corresponding OPC data of the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol; according to different protocol of the power system, the invention sets communication configuration and obtains communication messages, and then converts the communication messages into data packets and parameters of the OPC standard protocol so as to adapt to different power protocol types, and does not need to rely on hardware equipment or an additional converter to perform data conversion, so that a plurality of sets of interface software of different communication protocol types are reduced, the burden of the hardware equipment of a server is reduced, and the condition of slow system operation is avoided. After connection with the power system is established, connection with the power system is established according to the communication configuration and the data grouping, power data are acquired, the acquired power data are converted into data of an OPC standard protocol, and further, the power data of a corresponding OPC data source can be provided according to a data reading request, so that the data communication of the power system is more flexible, and the required power data can be effectively provided.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (SYNCHLINK) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The power system data acquisition system is characterized by comprising a data acquisition configuration unit, a data conversion unit and a service unit, wherein the data acquisition configuration unit comprises a communication port configuration subunit, an acquisition data configuration subunit and a data acquisition subunit;
the communication port configuration subunit is configured to: setting communication configuration of serial port communication and network communication according to the power system;
the acquired data configuration subunit is configured to: according to the power protocol of the power system, a communication message of the power protocol is obtained;
obtaining data packets of an OPC standard protocol according to the data type of the power system and the communication message, wherein the data packets comprise remote signaling data, telemetry data and remote pulse data;
Setting a data bit number parameter of the OPC standard protocol according to the communication message and the data packet, wherein the data bit number parameter is used for identifying data in the OPC standard protocol;
The data acquisition subunit is configured to: establishing connection with the power system according to the communication configuration of the serial port communication and the network communication, and obtaining power data of the power system according to the data packet and the data bit number parameter;
The obtaining the power data of the power system according to the data packet and the data bit number parameter includes: according to the data packet and the data bit number parameter, sending a request to the power system and analyzing returned data to obtain the power data of the power system;
The data conversion unit is used for: obtaining OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
the obtaining the OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol includes:
Performing conversion and storage on the electric power data according to the data packet and the data bit number of the OPC standard protocol to obtain the OPC data corresponding to the electric power data in the OPC standard protocol;
Obtaining an OPC data source of the power system according to the OPC data;
The obtaining the OPC data source of the power system according to the OPC data comprises the following steps:
integrating the OPC data to obtain the OPC data source of the power system, wherein the OPC data source comprises a real-time data source and a historical data source;
The service unit is used for: when a data reading request is received, the power data of the corresponding OPC data source is provided according to the data reading request.
2. The power system data acquisition system of claim 1, wherein the communication port configuration subunit is specifically configured to:
acquiring a serial number of the serial port communication;
according to the equipment parameters of the power system, the baud rate of the serial port communication is obtained;
obtaining a verification mode of the serial port communication according to the power protocol of the power system;
According to the data communication standard of the power system, obtaining the data bit and the stop bit of the serial port communication;
And setting the communication configuration of the serial port communication according to the serial port number, the baud rate, the verification mode, the data bit and the stop bit.
3. The power system data acquisition system of claim 1, wherein the communication port configuration subunit is further specifically configured to:
according to the communication mode of the power system, the IP address and the port number of the host computer of the network communication are obtained;
judging whether the network communication needs to be provided with a standby machine or not;
If so, obtaining the IP address of the standby machine according to the communication mode, and setting the communication configuration of the network communication according to the IP address, the port number and the IP address of the standby machine;
if not, setting the communication configuration of the network communication according to the IP address and the port number of the host.
4. The power system data acquisition system of claim 1, wherein the acquisition data configuration subunit is specifically configured to:
obtaining a frame type definition of the power protocol according to the communication message and the OPC standard protocol;
Obtaining the data packet according to the uplink data defined by the frame class and the data type of the power system;
According to the definition standard of each group in the data packet in the power protocol, obtaining the name and description of the bit number corresponding to each group and obtaining the address serial number and the scale factor corresponding to the bit number, wherein the method specifically comprises the following steps:
Obtaining the function code corresponding to each group of parameters according to the definition standard;
According to the function code, obtaining the name and description of the corresponding bit number of each group;
obtaining the address serial number of each bit number according to the arrangement sequence of the function codes in the definition standard;
taking the coefficient corresponding to the function code in the definition standard as the scale factor;
And setting the data bit number parameter of the OPC standard protocol according to the address sequence number and the scale factor.
5. The power system data acquisition system of claim 4 wherein the uplink data defined in accordance with the frame class and the data type of the power system result in the data packet comprising:
Obtaining a frame corresponding to each data type in the uplink data according to the uplink data and the data type;
and setting the data packet according to the frame corresponding to the data type.
6. The power system data acquisition system of claim 4, wherein the data conversion unit is specifically configured to:
Obtaining the data value of the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
obtaining a time stamp according to the acquisition time of the electric power data;
Obtaining quality code information according to the credibility of the electric power data;
adding the time stamp and the quality code information to the data value to obtain the OPC data corresponding to the power data in the OPC standard protocol;
And obtaining an OPC data source of the power system according to the OPC data.
7. The power system data acquisition system of claim 6, wherein the deriving an OPC data source for the power system from the OPC data comprises:
and classifying and storing the OPC data according to the data packets to obtain the data packets of the power data, and taking the data packets as the OPC data sources.
8. The power system data acquisition system of claim 6, wherein the service unit is specifically configured to:
Obtaining a time range of the power data according to the data reading request;
and acquiring the power data in the time range from the OPC data source.
9. A method for collecting data of an electric power system, comprising:
Setting communication configuration of serial port communication and network communication according to the power system;
according to the power protocol of the power system, a communication message of the power protocol is obtained;
obtaining data packets of an OPC standard protocol according to the data type of the power system and the communication message, wherein the data packets comprise remote signaling data, telemetry data and remote pulse data;
setting data bit number parameters of the OPC standard protocol according to the communication message and the data packet, wherein the data bit number parameters correspond to data detection positions of the power system;
establishing connection with the power system according to the communication configuration of the serial port communication and the network communication, and obtaining power data of the power system according to the data packet and the data bit number parameter;
The obtaining the power data of the power system according to the data packet and the data bit number parameter includes: according to the data packet and the data bit number parameter, sending a request to the power system and analyzing returned data to obtain the power data of the power system;
Obtaining OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol;
the obtaining the OPC data corresponding to the power data in the OPC standard protocol according to the data packet and the data bit number parameter of the OPC standard protocol includes:
Performing conversion and storage on the electric power data according to the data packet and the data bit number of the OPC standard protocol to obtain the OPC data corresponding to the electric power data in the OPC standard protocol;
Obtaining an OPC data source of the power system according to the OPC data;
The obtaining the OPC data source of the power system according to the OPC data comprises the following steps:
integrating the OPC data to obtain the OPC data source of the power system, wherein the OPC data source comprises a real-time data source and a historical data source;
when a data reading request is received, the power data of the corresponding OPC data source is provided according to the data reading request.
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