CN115396279A - Voltage on-line monitoring system and method for power grid and storage medium - Google Patents
Voltage on-line monitoring system and method for power grid and storage medium Download PDFInfo
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- CN115396279A CN115396279A CN202211022150.3A CN202211022150A CN115396279A CN 115396279 A CN115396279 A CN 115396279A CN 202211022150 A CN202211022150 A CN 202211022150A CN 115396279 A CN115396279 A CN 115396279A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B31/00—Predictive alarm systems characterised by extrapolation or other computation using updated historic data
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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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0604—Management of faults, events, alarms or notifications using filtering, e.g. reduction of information by using priority, element types, position or time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40228—Modbus
Abstract
The invention belongs to the technical field of power grid monitoring, and discloses a voltage on-line monitoring system, method and storage medium for a power grid, wherein the monitoring method comprises the following steps: collecting voltage data of a power grid in real time; receiving collected voltage data, and performing data analysis on the effective data; and (3) judging data according to the result obtained by data analysis: if the real-time voltage data of the power distribution network is within the safety threshold range of the power distribution network operation data in the normal operation state of the power distribution network with the corresponding voltage class, judging that the power distribution network has no abnormal condition, otherwise, judging that the power distribution network has the abnormal condition; sending early warning to the abnormal voltage data according to the data judgment result; and sending out fault early warning to the power grid corresponding to the abnormal voltage data. The method of the invention can realize real-time monitoring.
Description
Technical Field
The invention relates to the technical field of power grid monitoring, in particular to a voltage on-line monitoring system and method for a power grid and a storage medium.
Background
The description of the background of the invention pertaining to the related art to which this invention pertains is given for the purpose of illustration and understanding only of the summary of the invention and is not to be construed as an admission that the applicant is explicitly or implicitly admitted to be prior art to the date of filing this application as first filed with this invention.
With the increase of the digital transformation speed of the power grid, various devices such as transmission based on basic communication, cloud computing of data and other devices, big data, loT and the like are more and more in a data center, and the data volume is larger and larger, so that the safety and the reliability of the operation of the basic communication device are more and more important. The high-speed development of the current national economy and the modernization level of the power system management are accelerated, so that an advanced automatic acquisition mode is urgently needed for voltage monitoring management to monitor the voltage condition in real time and a set of stable, reliable, intelligent and highly compatible application, management and query software platform is urgently needed to automatically call, manage and analyze instrument data in a unified mode and provide a timely and reliable basis for voltage monitoring management work. Meanwhile, the system has the functions of remote control, remote maintenance, abnormal alarm, power quality monitoring and the like of the field equipment.
At present, the types of services borne by the power communication network can be divided into three categories, namely power grid production, enterprise management services and auxiliary support communication system services. The power grid production service comprises a power grid operation control service, a power grid operation monitoring service, a power grid operation auxiliary support service, a power grid operation management service and the like. The power grid operation control service comprises a line protection system, a safety and stability control system, a dispatching automation system, a power distribution automation system, a water dispatching automation system and the like. The power grid operation control service has the highest requirements on real-time performance, safety and reliability. The power grid operation monitoring and auxiliary supporting service comprises an electric energy metering system, a wide-area phasor measuring system, a substation device monitoring system, a power transmission line monitoring system, an electric energy quality monitoring system, a clock online monitoring system, a thunder monitoring system, a substation video monitoring system, a power prediction system, a dispatcher training system (anti-accident exercise), a dispatching exchange system, a GIS system, a power distribution operation monitoring system, a matched television frequency monitoring system, an electric automobile charging and switching facility monitoring system, a distributed power supply monitoring system, dispatching data multi-stage coordinated parallel computation, an electromechanical electromagnetic simulation platform, robot inspection, online safety analysis and the like. The power grid operation management service comprises a protection information management system, a stable operation management information system, a communication network management system, a power market operation system, a scheduling production management system, a fault first-aid repair management system, a communication professional and operation management informatization system and the like.
In the power grid operation monitoring and auxiliary supporting business, the requirements on real-time performance, safety and reliability of an online monitoring system of direct-current power supply equipment in a substation communication equipment room are high. To many and the position dispersion of communication equipment voltage monitoring point quantity, only rely on artifical voltage monitoring data management analysis of gathering at present: the method has the advantages of large workload, low efficiency, long acquisition time, no intelligent early warning, poor monitoring and management quality and the like.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a voltage online monitoring system, method and storage medium for a power grid. The monitoring method is time-saving and labor-saving, and effectively reduces data errors.
The purpose of the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides an online voltage monitoring method for a power grid, including the following steps:
collecting voltage data of a power grid in real time;
receiving collected voltage data, and performing data analysis on the effective data;
and (3) judging data according to the result obtained by data analysis: if the real-time voltage data of the power distribution network is within the safety threshold range of the power distribution network operation data in the normal operation state of the power distribution network with the corresponding voltage class, judging that the power distribution network has no abnormal condition, otherwise, judging that the power distribution network has the abnormal condition;
sending early warning to the abnormal voltage data according to the data judgment result;
and sending out fault early warning to the power grid corresponding to the abnormal voltage data.
Further, after receiving the collected voltage data, the method comprises the following steps: and screening the voltage data to obtain effective voltage data.
Further, the voltage data of the power grid is acquired by adopting 24-bit AD sampling, and the dynamic range is 1000.
Furthermore, the acquisition speed of acquiring the voltage data of the power grid is 20mS, 40mS, 60mS, 80mS, 100mS, 400mS and 1000mS, and seven acquisition speeds are adjustable.
Further, the method for sending fault early warning to the power grid corresponding to the abnormal voltage data comprises the following steps:
and when the power distribution network has abnormal conditions, sending an alarm prompt in a ringing mode.
Further, abnormal voltage data and the corresponding power grid number are sent to a display device and displayed while a ringing mode is adopted.
In a second aspect, an embodiment of the present invention provides an online voltage monitoring system for a power grid, including:
the acquisition module is configured to acquire voltage data of a power grid in real time;
the data analysis module is configured to carry out data analysis on the effective data;
the judging module is configured to judge data according to a result obtained by data analysis;
the first early warning module: the voltage data processing device is configured to send out early warning to the abnormal voltage data according to the data judgment result;
and the second early warning module is configured to send out fault early warning to the power grid corresponding to the abnormal voltage data.
Further, the voltage on-line monitoring system for the power grid further comprises:
the screening module is configured to receive the collected voltage data and screen effective data;
a database configured to store the valid data.
Furthermore, all channels in the acquisition module are mutually isolated, the power supply, the communication and the tested end are completely isolated, and the withstand voltage is more than 2500V;
the selectable internet access communication comprises a Modbus-RTU protocol and a Modbus-TCP protocol;
the voltage monitoring adopts a J2EE framework.
Further, the voltage on-line monitoring system for the power grid further comprises a display device, and the display device is configured to receive and display abnormal voltage data and the corresponding power grid number.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, in which a plurality of instructions are stored, where the instructions are adapted to be loaded by a processor of a terminal device and to execute the voltage online monitoring method for a power grid according to any one of claims 1 to 6.
The embodiment of the invention has the following beneficial effects:
the method does not need manual data screening, simultaneously rejects a large amount of invalid data before storage, avoids a large amount of manual heavy work, and can largely avoid data errors caused by fatigue; the voltage data of the power distribution network is compared with the safety threshold of the power distribution network operation data in the normal operation state of the power distribution network with the preset corresponding voltage grade, whether the power distribution network has abnormal conditions or not can be judged, and the high-efficiency monitoring of the power distribution network data is realized. When the power distribution network is abnormal, the power distribution network with the abnormal condition can be found in time and quickly determined, corresponding running state information is obtained, and a data base is laid for abnormal restoration of the power distribution network. The monitoring to a plurality of distribution network operation data is realized, when other distribution network operation data need be monitored, directly with this distribution network merge can, need not carry out extra operation, improved the flexibility of electric wire netting data monitoring.
Detailed Description
The present application is further described below with reference to examples.
In the following description, different "one embodiment" or "an embodiment" may not necessarily refer to the same embodiment, in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art. Various embodiments may be replaced or combined, and other embodiments may be obtained according to the embodiments without creative efforts for those skilled in the art.
At present, voltage monitoring and management system software used at home and abroad is single-machine software, can only complete basic work such as data acquisition and display, and can not realize unattended operation, implement monitoring and acquisition of data, and is very deficient in aspects of intelligently analyzing data, prompting an alarm, managing network, inquiring WEB data and the like. With the rapid development of economy and the acceleration of the modernization level of management, an advanced automatic acquisition mode (namely, the realization of remote centralized acquisition) for monitoring the voltage condition in real time and a set of stable, reliable, intelligent and highly compatible application, management and query software platform are urgently needed for voltage monitoring management, so that the data of different meters can be automatically called, uniformly managed and uniformly analyzed, and a timely and reliable basis is provided for the voltage monitoring management work. Meanwhile, the system has the functions of remote control, remote level opening, remote maintenance, real-time acquisition, abnormal reporting, power quality monitoring and the like of the field equipment.
A voltage online monitoring method for a power grid comprises the following steps:
collecting voltage data of a power grid in real time;
receiving collected voltage data, and performing data analysis on the effective data;
and (3) judging data according to the result obtained by data analysis: if the real-time voltage data of the power distribution network is within the safety threshold range of the power distribution network operation data in the normal operation state of the power distribution network with the corresponding voltage class, judging that the power distribution network has no abnormal condition, otherwise, judging that the power distribution network has the abnormal condition;
sending early warning to the abnormal voltage data according to the data judgment result;
and sending out fault early warning to the power grid corresponding to the abnormal voltage data.
Here, it is to be noted that: voltage data of the power grid are collected in real time, and the voltage quality and the power supply running condition of each monitoring point can be monitored in 24 hours on an intelligent network management analysis platform;
the data analysis step can automatically form a collection management report (such as a daily, monthly, quarterly and annual report) and an analysis curve graph, realize the prejudgment and state perception of the faults of the power supply system, realize the voltage information acquisition, monitoring and management of the optical transmission equipment and the data network equipment, and realize the fault early warning by setting an early warning threshold value and other modes.
In some embodiments of the invention, said receiving collected voltage data comprises the steps of: and screening the voltage data to obtain effective voltage data.
In some embodiments of the present invention, the acquiring voltage data of the power grid is by using 24-bit AD sampling, and the dynamic range is 1000.
In some embodiments of the present invention, the collection speed of the voltage data of the power grid is 20mS, 40mS, 60mS, 80mS, 100mS, 400mS, 1000mS, and seven collection speeds are adjustable.
In some embodiments of the invention, the method for sending out fault early warning to the power grid corresponding to the abnormal voltage data comprises the following steps:
and when the power distribution network has abnormal conditions, sending an alarm prompt in a ringing mode.
Here, it is to be noted that: the alarm mode has various modes, such as audio, video and the like, the audio can be appointed sound signals such as dripping sound, buzzing sound and the like, and the alarm mode can also be a direct shout alarm mode; the video can be directly displayed on the large screen, and of course, the video and the audio can also be used in a combined manner, and the warning manner is not limited here.
In some embodiments of the invention, the abnormal voltage data and the corresponding power grid number are sent to the display device and displayed while a ringing mode is adopted.
Here, it is to be noted that: the form of the display device is not limited, and the display device can be a computer, a mobile phone or a tablet and the like.
An on-line voltage monitoring system for an electrical grid, comprising:
the acquisition module is configured to acquire voltage data of a power grid in real time;
the data analysis module is configured to carry out data analysis on the effective data;
the judging module is configured to judge data according to a result obtained by data analysis;
the first early warning module: the voltage data processing device is configured to send out early warning to the abnormal voltage data according to the data judgment result;
and the second early warning module is configured to send out fault early warning to the power grid corresponding to the abnormal voltage data.
Here, it is to be noted that: through the implementation of the voltage monitoring and early warning system of the intelligent communication equipment, the current working mode of management and analysis only depending on manually collected voltage monitoring data is changed fundamentally.
In some embodiments of the present invention, the voltage on-line monitoring system for a power grid further includes:
the screening module is configured to receive the collected voltage data and screen effective data;
a database configured to store the valid data.
In some embodiments of the invention, the channels in the acquisition module are isolated from each other, the power supply, the communication and the tested end are all isolated, and the withstand voltage is more than 2500V;
the selectable internet access communication comprises a Modbus-RTU protocol and a Modbus-TCP protocol;
the voltage monitoring adopts a J2EE framework.
Here, it is to be noted that: the voltage acquisition equipment adopts high-speed photoelectric coupling technology to realize the isolation between each channel signal, and the signal measurement adopts special 24-bit high-precision true effective value measurement chip, measures voltage and the like, and can realize full isolation, no matter how the external power supply is connected or changed, no influence can be caused on the device, and the operation safety is very high. Can prevent to have strong signal such as harmonic, surge of interference and dangerous electric potential directly to get into the collection module, cause the collection equipment damage, characteristics and the application of following brief analysis voltage acquisition equipment:
high-speed photoelectric coupler
Like a common photoelectric coupler, the photoelectric coupler is characterized in that a light emitting diode and a phototriode are assembled together, and an optical signal is utilized to transmit information, so that the electric- > optical > electric transmission of a circuit signal (photoelectric coupling circuit) is realized.
The high-speed photoelectric coupler is internally provided with an AlGaAs LED with the wavelength of 850nm and an integrated detector, wherein the detector consists of a photosensitive diode, a high-gain linear operational amplifier and a collector open-circuit triode with a Schottky clamp.
The working principle is that a signal is input from an access pin, a light emitting diode emits light, the light emitting diode is transmitted to a photosensitive diode through an optical channel in a chip, a photosensitive tube with reverse bias is conducted after illumination, the light is transmitted to one input end of an AND gate after current-voltage conversion, the other input end of the AND gate is an enabling end, when the enabling end is high, the AND gate outputs high level, and the photoelectric isolator outputs low level after the inversion of an output triode. When the input signal current is less than the trigger threshold or the enable terminal is low, a high level is output, but the logic high is open collector, and a pull-up resistor or a voltage regulation circuit can be added to the receiving circuit.
Features and advantages of
The antenna has the advantages of capability of transmitting information in a single direction, wide pass band, small parasitic feedback, strong noise elimination capability and good anti-electromagnetic interference performance.
Attention parameters (common photocoupler parameters)
A. Input parameter bbbbb DATA
B. Operating voltage range
Operating Voltage Range
C. Input DC Voltage bbbbbbb DC Voltage
D. Typical input Current Type bbbbbbb Current
E. Typical Transmission Frequency Transmission Frequency
F. OUTPUT parameter OUTPUT DATA
G. Operating voltage range
Operating Voltage Range
H. Continuous Load Current output Current Continuous Load Current
The method also comprises parameters such as conversion rate, slew rate, fan-out coefficient, maximum input and output circuit, working temperature and the like.
In some embodiments of the present invention, the voltage on-line monitoring system for a power grid further includes a display device configured to receive and display abnormal voltage data and a corresponding power grid number.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, in which a plurality of instructions are stored, where the instructions are adapted to be loaded by a processor of a terminal device and to execute the voltage online monitoring method for a power grid according to any one of claims 1 to 6.
The embodiment of the invention has the following beneficial effects:
the method does not need manual data screening, simultaneously rejects a large amount of invalid data before storage, avoids a large amount of manual heavy work, and can largely avoid data errors caused by fatigue; the voltage data of the power distribution network is compared with the safety threshold of the power distribution network operation data in the normal operation state of the power distribution network with the preset corresponding voltage grade, whether the power distribution network has abnormal conditions or not can be judged, and the high-efficiency monitoring of the power distribution network data is realized. When the power distribution network is abnormal, the power distribution network with the abnormal condition can be found in time and quickly determined, corresponding running state information is obtained, and a data base is laid for abnormal restoration of the power distribution network. The monitoring to a plurality of distribution network operational data is realized, when other distribution network operational data need be monitored, directly merge into this distribution network can, need not carry out extra operation, improved the flexibility of electric wire netting data monitoring.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should be noted that the above embodiments can be freely combined as necessary. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A voltage online monitoring method for a power grid is characterized by comprising the following steps:
collecting voltage data of a power grid in real time;
receiving collected voltage data, and performing data analysis on the effective data;
and (3) judging data according to the result obtained by data analysis: if the real-time voltage data of the power distribution network is within the safety threshold range of the power distribution network operation data in the normal operation state of the power distribution network with the corresponding voltage class, judging that the power distribution network has no abnormal condition, otherwise, judging that the power distribution network has the abnormal condition;
sending early warning to the abnormal voltage data according to the data judgment result;
and sending out fault early warning to the power grid corresponding to the abnormal voltage data.
2. The method for monitoring the voltage of the power grid in the on-line mode according to claim 1, wherein the method comprises the following steps after the step of receiving the collected voltage data: and screening the voltage data to obtain effective voltage data.
3. The on-line voltage monitoring method for an electrical network according to claim 1,
the voltage data of the power grid are acquired by adopting 24-bit AD sampling, and the dynamic range is 1000;
the acquisition speed of acquiring the voltage data of the power grid is 20mS, 40mS, 60mS, 80mS, 100mS, 400mS and 1000mS, and seven acquisition speeds are adjustable.
4. The voltage on-line monitoring method for the power grid according to claim 1, wherein a fault early warning is sent to the power grid corresponding to the abnormal voltage data, and the method comprises the following steps:
and when the power distribution network has abnormal conditions, sending an alarm prompt in a ringing mode.
5. The voltage on-line monitoring method for the power grid according to claim 4, wherein abnormal voltage data and a corresponding power grid number are sent to a display device and displayed while a ringing mode is adopted.
6. An on-line voltage monitoring system for an electrical grid, comprising:
the acquisition module is configured to acquire voltage data of a power grid in real time;
the data analysis module is configured to carry out data analysis on the effective data;
the judging module is configured to judge data according to a result obtained by data analysis;
the first early warning module: the voltage data processing device is configured to send out early warning to the abnormal voltage data according to the data judgment result;
and the second early warning module is configured to send out fault early warning to the power grid corresponding to the abnormal voltage data.
7. The system according to claim 1, further comprising:
the screening module is configured to receive the collected voltage data and screen effective data;
a database configured to store the valid data.
8. The on-line voltage monitoring system for an electrical grid according to claim 1,
all channels in the acquisition module are mutually isolated, a power supply, communication and a tested end are completely isolated, and the withstand voltage is more than 2500V;
the selectable internet access communication comprises a Modbus-RTU protocol and a Modbus-TCP protocol;
the voltage monitoring adopts a J2EE framework.
9. The system according to claim 1, further comprising a display device configured to receive and display abnormal voltage data and corresponding grid numbers.
10. A computer-readable storage medium, having stored therein a plurality of instructions adapted to be loaded by a processor of a terminal device and to perform the method for online monitoring of voltage for an electrical grid according to any one of claims 1-6.
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| CN113806420A (en) * | 2021-08-31 | 2021-12-17 | 国网山东省电力公司金乡县供电公司 | Power grid data monitoring method and device |
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