CN114530943A - Novel voltage sag layered traceability monitoring and analyzing system - Google Patents
Novel voltage sag layered traceability monitoring and analyzing system Download PDFInfo
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- CN114530943A CN114530943A CN202210250700.0A CN202210250700A CN114530943A CN 114530943 A CN114530943 A CN 114530943A CN 202210250700 A CN202210250700 A CN 202210250700A CN 114530943 A CN114530943 A CN 114530943A
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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
- H02J13/00001—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
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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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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a novel voltage sag layered traceability monitoring and analyzing system, and belongs to the technical field of electric energy quality. A novel voltage sag layered traceability monitoring and analyzing system comprises a sensing layer, a transmission layer and a platform layer, wherein the sensing layer and the platform layer are used for transmitting data through the transmission layer; the sensing layer consists of a voltage sag monitoring terminal and communication routers, wherein the voltage sag monitoring terminal is in signal connection through the Ethernet between the 5G or other communication routers; the application layer comprises an IEEE1588 clock source, a voltage sag tracing processing device and a switch; the switch is respectively in signal connection with an IEEE1588 clock source and the voltage sag tracing processing device; the sensing layer undertakes a voltage sag monitoring task, the transmission layer transmits voltage sag data and time service messages based on a network, and the platform layer can complete the functions of centralized acquisition, storage, analysis and time service of the sag data.
Description
Technical Field
The invention relates to a novel voltage sag layered traceability monitoring and analyzing system, and belongs to the technical field of electric energy quality.
Background
The voltage sag is the power quality problem causing the most complaints of customers, and it is counted that the complaints caused by the voltage sag account for 80% of all the complaints of the power quality problem, because when the voltage sag occurs, the user equipment is easy to fail or stop, and the production may be interrupted when the voltage sag is serious. The voltage sag phenomenon generally exists in a power grid system, advanced manufacturing technology extremely depends on high-quality power, so that a user can pay more attention to and pay more attention to the voltage sag problem, and how to carry out voltage sag monitoring and sag source positioning aiming at the user requirements so as to support voltage sag management is a problem which needs to be solved urgently by the current power department and the user. In recent years, power grid companies increasingly attach importance to the problem of voltage sag, develop and build voltage sag monitoring systems, but are limited by communication system architectures, and the systems have the problems of insufficient number of coverage terminal users, large communication data volume of transmission networks, slow response delay of user control and processing, and the like.
Disclosure of Invention
The technical problem is as follows: the problems that a voltage sag positioning traceability system is high in time delay and insufficient in bearing performance are solved. The invention provides a novel voltage sag layered traceability monitoring and analyzing system.
The technical scheme of the invention is as follows:
a novel voltage sag layered traceability monitoring and analyzing system comprises a sensing layer, a transmission layer and a platform layer, wherein the sensing layer and the platform layer transmit data through the transmission layer;
the sensing layer consists of a voltage sag monitoring terminal and a communication router, and the voltage sag monitoring terminal is in signal connection with the communication router through the Ethernet;
the application layer comprises an IEEE1588 clock source, a voltage sag source tracing processing device and a switch; the switchboard is respectively in signal connection with the IEEE1588 clock source and the voltage sag source tracing processing device;
the sensing layer undertakes a voltage sag monitoring task, the transmission layer network transmits voltage sag data and time service messages, and the platform layer can finish the functions of centralized acquisition, storage, analysis and time service of the sag data; in the whole voltage sag positioning traceability system, data are collected by each voltage sag monitoring terminal, then are transmitted to a voltage sag traceability processing device through a transmission layer, data are time-service synchronized through an IEEE1588 clock source, and finally the data are processed and analyzed by the voltage sag traceability processing device to obtain results of sag time, sag types and sag positions.
The voltage sag positioning traceability system adopts a layered processing mode, and deploys a corresponding processing mode near a voltage sag sampling terminal; the collected voltage sag data are preliminarily screened, analyzed and processed, and the data uploading transmission amount can be reduced according to the relevance of the related data.
The frame format, the data coding and the transmission rule of data transmission between the voltage sag tracing processing device and the voltage sag monitoring terminal are specified; defining an application layer data confirmation mechanism for ensuring the integrity of data between the voltage sag tracing processing device and the voltage sag monitoring terminal.
The data comprises real-time data and non-real-time data; for non-real-time data, the voltage sag monitoring terminal requires the voltage sag monitoring terminal to confirm the data; non-real time data includes events, waveform files, and log data.
The number of the sensing layers is multiple.
The transmission layer can be a plurality of transmission networks; the transmission network is a wireless network or a wired network; the wireless network is a 5G/4G/3G network, and the wired network is an optical fiber/Ethernet network.
The voltage sag source tracing processing device is based on communication protocols of various network protocols (such as MQTT, 104 or modbus), and is a commercially available product.
The voltage sag monitoring terminal has the functions of voltage sag/interruption recording, transient capture of waveforms, event recording, harmonic analysis, waveform sampling, flicker monitoring, voltage unbalance measurement and measurement control; sampling 1024 points per cycle by the voltage sag monitoring terminal; the voltage sag monitoring terminal is a commercial product.
The event record is divided into 3 stages, and comprises wave recording in three time periods before event triggering, event duration and event ending.
A working method of a novel voltage sag layered traceability monitoring and analyzing system comprises the following steps:
firstly, respectively installing a plurality of voltage sag monitoring terminals on each node in a power distribution network, and collecting node voltage and current data in real time;
then, carrying out preliminary analysis on data acquired on the voltage sag monitoring terminal to obtain data such as voltage frequency, active and reactive power, harmonic distortion rate, voltage unbalance degree and the like, and analyzing whether voltage sag occurs or not;
under the condition that the voltage sag monitoring terminal does not detect the voltage sag, the voltage sag monitoring terminal analyzes and transmits the data acquired and analyzed at the time point to the application layer once every three minutes through the transmission layer;
if the voltage sag monitoring terminal detects that a voltage sag event occurs, the voltage sag event is subjected to wave recording, data in the sag period are stored, and then the data in the sag period and the data at the time point are transmitted to an application layer through a transmission layer at a fixed data transmission time point;
in a platform layer, an IEEE1588 clock source is used for timing data received from each voltage sag monitoring terminal, and the data are synchronously acquired;
and finally, analyzing the data by the voltage sag traceability processing device, and further performing sag cause analysis and positioning analysis if the voltage sag condition is included, so as to obtain a sag event type and a sag source positioning result.
The invention has the following beneficial effects:
(1) the communication time delay is low, the terminal capacity of the system connection is greatly increased, and the bearing performance of the system is improved.
(2) Meanwhile, by using a near-user-side real-time processing method, the real-time performance of voltage sag monitoring and the data channel bandwidth can be reduced, and a beneficial reference is provided for control in real time.
(3) The fault tolerance of the system is improved, and the data loss in the voltage sag process is reduced through a continuous transmission mechanism of different data after fault recovery.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the working process of the present invention.
Fig. 3 is a schematic diagram illustrating the components of the event record recorded by the voltage sag monitoring terminal according to the present invention.
Detailed Description
The invention is described in detail below with reference to fig. 1-3 and the examples.
A novel voltage sag layered traceability monitoring and analyzing system comprises a sensing layer, a transmission layer and a platform layer, wherein the sensing layer and the platform layer transmit data through the transmission layer;
the sensing layer consists of a voltage sag monitoring terminal and a communication router, and the voltage sag monitoring terminal is in signal connection with the communication router through the Ethernet;
the application layer comprises an IEEE1588 clock source, a voltage sag source tracing processing device and a switch; the switchboard is respectively in signal connection with the IEEE1588 clock source and the voltage sag source tracing processing device;
the sensing layer undertakes a voltage sag monitoring task, the transmission layer transmits voltage sag data and time service messages based on a network, and the platform layer can finish functions of centralized acquisition, storage, analysis and time service of the sag data; in the whole voltage sag positioning traceability system, data are collected by each voltage sag monitoring terminal, then are transmitted to a voltage sag traceability processing device through a transmission layer, data are time-service synchronized through an IEEE1588 clock source, and finally the data are processed and analyzed by the voltage sag traceability processing device to obtain results of sag time, sag types and sag positions.
The voltage sag positioning traceability system adopts a layered processing mode, and deploys a corresponding processing mode near a voltage sag sampling terminal; the collected voltage sag data are preliminarily screened, analyzed and processed, and the data uploading transmission amount can be reduced according to the relevance of the related data.
The frame format, the data coding and the transmission rule of data transmission between the voltage sag tracing processing device and the voltage sag monitoring terminal are specified; defining an application layer data confirmation mechanism for ensuring the integrity of data between the voltage sag tracing processing device and the voltage sag monitoring terminal.
The data comprises real-time data and non-real-time data; for non-real-time data, the voltage sag monitoring terminal requires the voltage sag monitoring terminal to confirm the data; non-real time data includes events, waveform files, and log data.
The number of the sensing layers is multiple.
The transmission layer is a plurality of transmission channels.
The voltage sag traceability processing device is communicated based on an MQTT communication protocol, and is a commercially available product.
The voltage sag monitoring terminal integrates multiple functions of voltage sag/interruption recording, transient capture of waveforms, event recording, harmonic analysis, waveform sampling, flicker monitoring, voltage unbalance measurement, measurement control and the like. The device samples 1024 points per cycle wave, has high measurement precision, measures the total electric quantity, has super-large capacity data storage and recording, and the recorded data can be stored for more than half a year.
The waveform recording can be divided into 3 stages, and the recording comprises recording before event triggering, event duration and three time intervals after event ending.
In a specific physical transmission mode, the embodiment utilizes a 5G wireless communication technology to realize technical schemes such as small base stations, millimeter waves and multiple input and output antenna technologies, and has advantages in network transmission speed, time delay, connection quantity and battery service life.
A working method of a novel voltage sag layered traceability monitoring and analyzing system comprises the following steps:
firstly, respectively installing a plurality of voltage sag monitoring terminals on each node in a power distribution network, and collecting node voltage and current data in real time;
then, carrying out preliminary analysis on data acquired on the voltage sag monitoring terminal to obtain data such as voltage frequency, active and reactive power, harmonic distortion rate, voltage unbalance degree and the like, and analyzing whether voltage sag occurs or not;
under the condition that the voltage sag monitoring terminal does not detect the voltage sag, the voltage sag monitoring terminal analyzes and transmits the data acquired and analyzed at the time point to the application layer once every three minutes through the transmission layer;
if the voltage sag monitoring terminal detects that a voltage sag event occurs, the voltage sag event is subjected to wave recording, data in the sag period are stored, and then the data in the sag period and the data at the time point are transmitted to an application layer through a transmission layer at a fixed data transmission time point;
in a platform layer, an IEEE1588 clock source is used for timing data received from each voltage sag monitoring terminal, and the data are synchronously acquired;
and finally, analyzing the data by the voltage sag traceability processing device, and further performing sag cause analysis and positioning analysis if the voltage sag condition is included, so as to obtain a sag event type and a sag source positioning result.
The method is characterized in that a transmission collection edge layer is collected in the middle, and in order to ensure the data integrity between a voltage sag tracing system and a voltage sag monitoring terminal, the specific method comprises the following steps:
(1) when the voltage sag monitoring terminal uploads data, a globally unique data ID is distributed to each piece of data;
(2) after receiving the data, the voltage sag tracing system confirms each piece of data successfully stored in the database (an uploading request replies an ACK response);
(3) after the voltage sag monitoring terminal receives the ACK response, the data is marked as successfully delivered, and then is not actively delivered;
(4) the voltage sag tracing system eliminates repeated data received due to accidents according to the data ID;
after the failure is recovered, the continuous transmission mechanism of different data is specifically agreed as follows:
(1) events, such as the generation of new events, are preferably uploaded. When no new event is generated, the old event is continuously transmitted; distributing a new data ID when the event is sent for the first time; if the event has been sent, the old data ID is used for continued transmission.
(2) File data, all files (cfg, dat, hdr) of the waveform are re-uploaded, and some subfiles cannot be uploaded individually. When uploading a waveform, the data ID must be kept unchanged, and the original assigned data ID is used for uploading.
(3) Recording data, such as generating new recorded data, preferentially uploading the new data. Uploading old recorded data when no new data is generated; if recording the first transmission, assigning a new data ID; if the record has been sent, the old data ID is used for continuous transmission.
The application layer device comprises a switch, a voltage sag tracing system, a voltage sag tracing server and an IEEE1588 clock source. And the IEEE1588 clock source is used for time service of the voltage sag tracing server and the voltage sag monitoring equipment. The voltage sag positioning traceability software references advanced concepts at home and abroad, adopts the latest technologies such as computers, databases, network communication, instrument measurement and the like, and provides real-time monitoring and comprehensive analysis of typical transient indexes and phenomena such as voltage sag, short-time voltage interruption and the like.
Claims (10)
1. The utility model provides a novel voltage sag layering monitoring, analytic system that traces to source which characterized in that: the system comprises a sensing layer, a transmission layer and a platform layer, wherein the sensing layer and the platform layer transmit data through the transmission layer;
the sensing layer consists of a voltage sag monitoring terminal and a communication router, and the voltage sag monitoring terminal is in signal connection with the wireless communication router through the Ethernet;
the application layer comprises an IEEE1588 clock source, a voltage sag source tracing processing device and a switch; the switchboard is respectively in signal connection with the IEEE1588 clock source and the voltage sag source tracing processing device;
the sensing layer undertakes a voltage sag monitoring task, the transmission layer can transmit voltage sag data and time service messages through various networks, and the platform layer can finish the functions of centralized acquisition, storage, analysis and time service of the sag data; in the whole voltage sag positioning traceability system, data are collected by each voltage sag monitoring terminal, then are transmitted to a voltage sag traceability processing device through a transmission layer, data are time-service synchronized through an IEEE1588 clock source, and finally the data are processed and analyzed by the voltage sag traceability processing device to obtain results of sag time, sag types and sag positions.
2. The novel voltage sag layered traceability monitoring and analysis system as claimed in claim 1, wherein: the voltage sag positioning traceability system adopts a layered processing mode, and deploys a corresponding processing mode near a voltage sag sampling terminal; the collected voltage sag data are preliminarily screened, analyzed and processed, and the data uploading transmission amount can be reduced according to the relevance of the related data.
3. The novel voltage sag layered traceability monitoring and analyzing system according to claim 1, characterized in that: defining a frame format, data coding and transmission rules for data transmission between the voltage sag source tracing processing device and the voltage sag monitoring terminal; defining an application layer data confirmation mechanism for ensuring the integrity of data between the voltage sag tracing processing device and the voltage sag monitoring terminal.
4. The novel voltage sag layered traceability monitoring and analyzing system according to claim 1, characterized in that: the data comprises real-time data and non-real-time data; for non-real-time data, the voltage sag monitoring terminal requires the voltage sag monitoring terminal to confirm the data; non-real time data includes events, waveform files, and log data.
5. The novel voltage sag layered traceability monitoring and analysis system as claimed in claim 1, wherein: the number of the sensing layers is multiple.
6. The novel voltage sag layered traceability monitoring and analysis system as claimed in claim 1, wherein: the transmission layer is a wireless network or a wired network; the wireless network is a 5G/4G/3G network, and the wired network is an optical fiber/Ethernet network.
7. The novel voltage sag layered traceability monitoring and analysis system as claimed in claim 1, wherein: the voltage sag source tracing processing device is used for carrying out communication based on a plurality of communication protocols, wherein the communication protocols comprise MQTT, 104 or modbus.
8. The novel voltage sag layered traceability monitoring and analysis system as claimed in claim 1, wherein: the voltage sag monitoring terminal has the functions of voltage sag/interruption recording, transient capture of waveforms, event recording, harmonic analysis, waveform sampling, flicker monitoring, voltage unbalance measurement and measurement control; the voltage sag monitoring terminal samples 1024 points per cycle.
9. The novel voltage sag layered traceability monitoring and analysis system as claimed in claim 8, wherein: the event record is divided into 3 stages, and comprises wave recording in three time periods before event triggering, event duration and event ending.
10. A working method of a novel voltage sag layered traceability monitoring and analyzing system is characterized in that:
firstly, respectively installing a plurality of voltage sag monitoring terminals on each node in a power distribution network, and collecting node voltage and current data in real time;
then, carrying out preliminary analysis on data acquired on the voltage sag monitoring terminal to obtain data such as voltage frequency, active and reactive power, harmonic distortion rate, voltage unbalance degree and the like, and analyzing whether voltage sag occurs or not;
under the condition that the voltage sag monitoring terminal does not detect the voltage sag, the voltage sag monitoring terminal analyzes and transmits the data acquired and analyzed at the time point to the application layer once every three minutes through the transmission layer;
if the voltage sag monitoring terminal detects that a voltage sag event occurs, the voltage sag event is subjected to wave recording, data in the sag period are stored, and then the data in the sag period and the data at the time point are transmitted to an application layer through a transmission layer at a fixed data transmission time point;
in a platform layer, an IEEE1588 clock source is used for timing data received from each voltage sag monitoring terminal, and the data are synchronously acquired;
and finally, analyzing the data by the voltage sag source tracing processing device, and if the voltage sag source tracing processing device comprises the voltage sag condition, further performing sag cause analysis and positioning analysis to obtain a sag event type and a sag source positioning result.
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| CN202210250700.0A CN114530943A (en) | 2022-03-15 | 2022-03-15 | Novel voltage sag layered traceability monitoring and analyzing system |
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| CN202210250700.0A CN114530943A (en) | 2022-03-15 | 2022-03-15 | Novel voltage sag layered traceability monitoring and analyzing system |
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