CN116131214B - Network management system of digital harmonic elimination device and use method thereof - Google Patents
Network management system of digital harmonic elimination device and use method thereof Download PDFInfo
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- CN116131214B CN116131214B CN202310409179.5A CN202310409179A CN116131214B CN 116131214 B CN116131214 B CN 116131214B CN 202310409179 A CN202310409179 A CN 202310409179A CN 116131214 B CN116131214 B CN 116131214B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
- H02H7/05—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers for capacitive voltage transformers, e.g. against resonant conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
- H02H9/007—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions avoiding or damping oscillations, e.g. fenoresonance or travelling waves
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to the technical field of harmonic elimination resistors, in particular to a network management system of a digital harmonic elimination device and a use method thereof, wherein a high-power micro resistor is arranged between grounding points of the harmonic elimination device, and an acquisition module is used for acquiring voltage and current data of the high-power micro resistor and transmitting the acquired data to an analysis module; the analysis module collects the data acquired by the acquisition module, analyzes the current-voltage correlation, calculates power and transmits the power to the management module; and analyzing the measured data by the management mode, establishing a curve model, and analyzing and recording the running states of the harmonic eliminator at the measuring points in the resonance, near resonance and non-resonance states by using the curve model. The invention transparentizes the operation numbers of the harmonic eliminator through data collection, is convenient for digital accumulation or analysis, timely adjusts parameters when a plurality of nearby abnormal points are close, changes the influence on resonance, can judge different harmonic eliminator, and provides basis for harmonic elimination work.
Description
Technical Field
The invention relates to the technical field of harmonic elimination resistors, in particular to a digital harmonic elimination device management system and a using method thereof.
Background
In the power system, the resonance is easily generated when the load or the idle running is performed due to the ferromagnetic resonance generated by the accumulation of factors such as inductance, current, capacitance and the like or the induction of overvoltage, arc discharge and the like. The safe operation of the power system is directly threatened, and the explosion of the voltage sensor can be caused when the operation is serious, so that accidents are caused.
Therefore, in order to avoid resonance, the existing resonance elimination mode generally adopts a resistance method, a reactance method, a load method and the like, but the method only can know whether PT (potential transformer) is good or bad, has no concept of digitalization or quantization, and cannot judge the effectiveness of the resonance elimination device.
In the use process, because the resonance elimination device has the service life, PT (potential Transformer) can be easily burnt out, insurance can be provided and the like when the resonance elimination device fails; the quantized data such as how many times resonance occurs, the resonance eliminating device is damaged and the like is not known, and the situation that equipment is damaged and the maintainer is not known frequently occurs, so that the operation and maintenance cost is increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a network management system and a use method of a digital resonance elimination device, so that electric power data are digitized and transparent, whether resonance is generated or not can be identified, the service life of the resonance elimination device can be identified, and meanwhile, the validity of the resonance elimination device is evaluated.
In order to solve the above technical problems, the present invention provides a network management system of a digital resonance elimination device, including: the high-power micro-resistor is arranged between the grounding points of the harmonic eliminator, and the acquisition module is used for acquiring the voltage and current data of the high-power micro-resistor and transmitting the acquired data to the analysis module;
the analysis module is used for collecting the data acquired by the acquisition module, analyzing the current-voltage correlation, calculating the power and transmitting the calculated power to the management module;
the management module is used for analyzing the measured data, establishing a curve model and analyzing the resonance generation, the resonance elimination resistor and the PT running state by using the curve model; analyzing and recording the running states of the harmonic eliminator at the measuring points in the resonance, near resonance and non-resonance states by using a curve model; the resonance eliminator measuring point comprises a resonance eliminating resistor, a resonance eliminating reactor and a PT neutral grounding point;
and the alarm module is used for comparing the data analyzed by the management module with the data acquired by the acquisition module in real time and alarming.
The cloud server is connected with the management module and the alarm module.
Preferably, the acquisition module comprises an acquisition resistor connected in series, wherein the acquisition resistor is respectively electrically connected with the current sensor and the voltage sensor, and the current sensor and the voltage sensor respectively acquire current and voltage generated by resonance.
Preferably, the analysis module calculates power according to the data collected by the current sensor and the voltage sensor, and feeds back the data collected each time to the management module, wherein the collected data can be used for drawing a current-voltage curve and analyzing the correlation between the current sensor and the voltage sensor or calculating the power of the current sensor and the voltage sensor.
Preferably, the management module collects and re-analyzes the data fed back by the analysis module, and draws a data curve model when resonance is generated according to the analysis result so as to comprehensively judge whether resonance is generated according to the current-voltage correlation and the power, and the operational states of the resonance elimination resistor and the PT are judged when the acquisition module acquires different values.
Preferably, the cloud storage system further comprises a storage module, wherein the storage module is used for storing data acquired by the acquisition module, the analysis module and the management module and can be used for being consulted by the management module and the cloud.
Preferably, the device also comprises a noise collecting device, wherein the noise collecting device is arranged at the equipment,
the noise acquisition device comprises an omnidirectional noise sensor, a detection device and a detection device, wherein the omnidirectional noise sensor is used for picking up omnidirectional noise signals, and filtering processing is carried out on sound waves by utilizing the difference between the phases of the sound waves of the detected equipment received by the omnidirectional noise sensor;
the system also comprises a directional noise sensor, a target device and a target device, wherein the directional noise sensor is used for picking up a directional noise signal and judging whether the noise comes from a target device sound source or not so as to shield noise of non-devices;
the noise acquisition device acquires the noise file of Z days for the same equipment, and if Z is smaller than 60, the noise file is automatically prolonged at least until 60 is reached.
The noise acquisition device transmits the acquired data to the management module, the management module processes the acquired noise, the obtained noise file takes an effective part, the file is divided into Y data according to the length X,
the management module draws noise data into an initial sound waveform diagram, screens out data which is the same as a standard sound waveform diagram of equipment in a database under normal operation, associates the screened sound waveform diagrams with time points when equipment resonates, screens out a sound waveform diagram corresponding to the equipment resonates in the operation process, and stores the data into a cloud;
the management module is also used for receiving the coincidence ratio of the sound waveform diagram of the equipment in the working state sent by the noise acquisition device and the sound waveform diagram when the analyzed resonance is generated, screening out the running state corresponding to the equipment with the largest coincidence ratio so as to judge whether the equipment is faulty or not, and feeding back the fault to the alarm module;
preferably, the detuning resistor and PT operating state include a health state and a lifetime state.
The application method of the network management system adopting the digital harmonic elimination device comprises the following steps:
(1) The acquisition module acquires the voltage and the current of the high-power micro resistor and transmits the data to the analysis module;
(2) The analysis module calculates power according to the voltage and current values, and transmits the power, the voltage and the current as primary data to the management module;
(3) Repeating the step (1) and the step (2);
(4) The management module stores the data collected each time and draws a corresponding curve; analyzing the resonance generation, resonance elimination resistor and PT running state by using a curve model; analyzing and recording the running states of the harmonic eliminator at the measuring points in the resonance, near resonance and non-resonance states by using a curve model; the resonance eliminator measuring point comprises a resonance eliminating resistor, a resonance eliminating reactor and a PT neutral grounding point;
(5) Setting an alarm threshold according to the critical value, and comparing the alarm threshold with data acquired in real time so as to send an alarm signal in time;
(6) When the equipment is about to be damaged, the burning-out is avoided by adjusting parameters.
The beneficial effects are that: based on the existing resonance elimination device, the invention adds the acquisition module, when resonance is generated, the voltage and current of the acquisition module change, the acquisition module detects the resonance, the resonance elimination device and the PT health state are collected to the management module for analysis according to the change, and the curve model is built according to the corresponding acquired result and the state of the resonance elimination device and the PT state, so that whether resonance is generated at the high-voltage side when different values are generated and the health state of the resonance elimination device and the PT state when the generated resonance times reach the peak value are reversely deduced. The invention transparentizes the data through the data acquisition, is convenient for digital accumulation or analysis, timely adjusts parameters when the number of nearby abnormal points is more, changes the influence on resonance, can judge different resonance eliminating devices, and provides basis for resonance eliminating work.
Drawings
Fig. 1: the invention relates to a module connection relation block diagram;
Detailed Description
The invention provides a network management system of a digital harmonic elimination device, which comprises:
the acquisition module is used for acquiring voltage and current data of the installation position when resonance is generated and transmitting the acquired data to the analysis module;
the analysis module is used for collecting the data acquired by the acquisition module, analyzing the current-voltage correlation, calculating the power and transmitting the calculated power to the management module;
the management module is used for analyzing the measured data, establishing a curve model and analyzing the resonance generation, the resonance elimination resistor and the PT running state by using the curve model;
and the alarm module is used for comparing the data analyzed by the management module with the data acquired by the acquisition module in real time and alarming.
The cloud server is connected with the management module and the alarm module.
Preferably, the acquisition module comprises an acquisition resistor connected in series, wherein the acquisition resistor is respectively electrically connected with the current sensor and the voltage sensor, and the current sensor and the voltage sensor respectively acquire current and voltage generated by resonance.
Preferably, the analysis module calculates power according to the data collected by the current sensor and the voltage sensor, and feeds back the data collected each time to the management module, wherein the collected data can be used for drawing a current-voltage curve and analyzing the correlation between the current sensor and the voltage sensor or calculating the power of the current sensor and the voltage sensor.
Preferably, the management module collects and re-analyzes the data fed back by the analysis module, and draws a data curve model when resonance is generated according to the analysis result so as to comprehensively judge whether resonance is generated according to the current-voltage correlation and the power, and the operational states of the resonance elimination resistor and the PT are judged when the acquisition module acquires different values.
Preferably, the cloud storage system further comprises a storage module, wherein the storage module is used for storing data acquired by the acquisition module, the analysis module and the management module and can be used for being consulted by the management module and the cloud.
Preferably, the device also comprises a noise collecting device, wherein the noise collecting device is arranged at the equipment,
the noise acquisition device comprises an omnidirectional noise sensor, a detection device and a detection device, wherein the omnidirectional noise sensor is used for picking up omnidirectional noise signals, and filtering processing is carried out on sound waves by utilizing the difference between the phases of the sound waves of the detected equipment received by the omnidirectional noise sensor;
the system also comprises a directional noise sensor, a target device and a target device, wherein the directional noise sensor is used for picking up a directional noise signal and judging whether the noise comes from a target device sound source or not so as to shield noise of non-devices;
the noise acquisition device acquires the noise file of Z days for the same equipment, and if Z is smaller than 60, the noise file is automatically prolonged at least until 60 is reached.
The noise acquisition device transmits the acquired data to the management module, the management module processes the acquired noise, the obtained noise file takes an effective part, the file is divided into Y data according to the length X,
the management module draws noise data into an initial sound waveform diagram, screens out data which is the same as a standard sound waveform diagram of equipment in a database under normal operation, associates the screened sound waveform diagrams with time points when equipment resonates, screens out a sound waveform diagram corresponding to the equipment resonates in the operation process, and stores the data into a cloud;
the management module is also used for receiving the coincidence ratio of the sound waveform diagram of the equipment in the working state sent by the noise acquisition device and the sound waveform diagram when the analyzed resonance is generated, screening out the running state corresponding to the equipment with the largest coincidence ratio so as to judge whether the equipment is faulty or not, and feeding back the fault to the alarm module;
preferably, the detuning resistor and PT operating state include a health state and a lifetime state.
The application method of the network management system adopting the digital harmonic elimination device comprises the following steps:
(1) The acquisition module acquires voltage and current generated by resonance and transmits the data to the analysis module;
(2) The analysis module calculates power according to the voltage and current values, and transmits the power, the voltage and the current as primary data to the management module;
(3) Repeating the step (1) and the step (2);
(4) The management module stores the data collected each time and draws a corresponding curve; analyzing whether different voltage and current values generate resonance or not according to the curve, and when the acquisition module acquires different values, operating states of the resonance elimination resistor and the PT, and when a critical value is generated, the operating states of the resonance elimination resistor and the PT are problematic;
(5) Setting an alarm threshold according to the critical value, and comparing the alarm threshold with data acquired in real time so as to send an alarm signal in time;
(6) When the equipment is about to be damaged, the burning-out is avoided by adjusting parameters.
When the device is specifically used, a current coil is added to a neutral point and a ground to obtain current, then a resistor of 2 omega is connected in series to detect voltage, power is measured according to the current and the voltage, a related curve is drawn after the measured current, voltage and power are measured, and comprehensive judgment is carried out according to the curve and a noise spectrum.
The electrical parameters are adapted to the high power micro impedance of the test quality. Based on the existing resonance elimination device, the invention adds the acquisition module, when resonance is generated, the voltage and current of the acquisition module change, the acquisition module detects the resonance, the resonance elimination device and the PT health state are collected to the management module for analysis according to the change, and the curve model is built according to the corresponding acquired result and the state of the resonance elimination device and the PT state, so that whether resonance is generated at the high-voltage side when different values are generated and the health state of the resonance elimination device and the PT state when the generated resonance times reach the peak value are reversely deduced. The invention transparentizes the data through the data acquisition, is convenient for digital accumulation or analysis, timely adjusts parameters when the number of nearby abnormal points is more, changes the influence on resonance, can judge different resonance eliminating devices, and provides basis for resonance eliminating work.
Claims (7)
1. A network management system for a digital detuning device, comprising: the high-power micro-resistor is arranged between the grounding points of the harmonic eliminator, and the acquisition module is used for acquiring the voltage and current data of the high-power micro-resistor and transmitting the acquired data to the analysis module;
the analysis module is used for collecting the data acquired by the acquisition module, analyzing the current-voltage correlation, calculating the power and transmitting the calculated power to the management module;
the management module is used for analyzing the measured data, establishing a curve model and analyzing the resonance generation, the resonance elimination resistor and the PT running state by using the curve model; analyzing and recording the running states of the measuring points of the resonance eliminator in resonance, near resonance and non-resonance states by using a curve model; the resonance eliminator measuring point comprises a resonance eliminating resistor, a resonance eliminating reactor and a PT neutral grounding point;
the alarm module is used for comparing the data analyzed by the management module with the data acquired by the acquisition module in real time and giving an alarm;
the cloud server is connected with the management module and the alarm module.
2. The network management system of a digital resonance elimination device according to claim 1, wherein the collection module comprises a collection resistor connected in series, the collection resistor is respectively electrically connected with a current sensor and a voltage sensor, and the current sensor and the voltage sensor respectively collect current and voltage generated by resonance.
3. The network management system of the digital resonance elimination device according to claim 1, wherein the management module gathers and re-analyzes the data fed back by the analysis module, draws a data curve model when resonance is generated according to the analysis result, so as to comprehensively judge whether resonance is generated according to the correlation of current and voltage and power, and the operation states of the resonance elimination resistor and the PT when the acquisition module acquires different values.
4. The network management system of the digital resonance elimination device according to claim 1, further comprising a storage module, wherein the storage module is used for storing data collected by the collection module, the analysis module and the management module, and can be used for being consulted by the management module and the cloud.
5. The network management system of a digital detuning apparatus according to claim 1, further comprising a noise collection device, the noise collection device being mounted at the device,
the noise acquisition device comprises an omnidirectional noise sensor, a detection device and a detection device, wherein the omnidirectional noise sensor is used for picking up omnidirectional noise signals, and filtering processing is carried out on sound waves by utilizing the difference between the phases of the sound waves of the detected equipment received by the omnidirectional noise sensor;
the system also comprises a directional noise sensor, a target device and a target device, wherein the directional noise sensor is used for picking up a directional noise signal and judging whether the noise comes from a target device sound source or not so as to shield noise of non-devices;
the noise acquisition device acquires a noise file of Z days from the same equipment, and if Z is smaller than 60, the noise file is automatically prolonged to at least 60;
the noise acquisition device transmits the acquired data to the management module, the management module processes the acquired noise, the obtained noise file takes an effective part, the file is divided into Y data according to the length X,
the management module draws noise data into an initial sound waveform diagram, screens out data which is the same as a standard sound waveform diagram of equipment in a database under normal operation, associates the screened sound waveform diagrams with time points when equipment resonates, screens out a sound waveform diagram corresponding to the equipment resonates in the operation process, and stores the data into a cloud;
the management module is also used for receiving the coincidence ratio of the sound waveform diagram of the equipment in the working state sent by the noise acquisition device and the sound waveform diagram when the analyzed resonance is generated, screening out the running state corresponding to the equipment with the largest coincidence ratio so as to judge whether the equipment is faulty or not, and feeding back to the alarm module if the equipment is faulty.
6. The network management system of a digital detuning apparatus according to claim 1, wherein,
the detuning resistor and PT operating state include a healthy state and a state of life.
7. A method of using a network management system employing a digital detuning device according to any one of claims 1 to 6: the method is characterized by comprising the following steps of:
(1) The acquisition module acquires the voltage and the current of the high-power micro resistor and transmits the data to the analysis module;
(2) The analysis module calculates power according to the voltage and current values, and transmits the power, the voltage and the current as primary data to the management module;
(3) Repeating the step (1) and the step (2);
(4) The management module stores the data collected each time and draws a corresponding curve; analyzing the resonance generation, resonance elimination resistor and PT running state by using a curve model; analyzing and recording the running states of the harmonic eliminator at the measuring points in the resonance, near resonance and non-resonance states by using a curve model; the resonance eliminator measuring point comprises a resonance eliminating resistor, a resonance eliminating reactor and a PT neutral grounding point;
(5) Setting an alarm threshold according to the critical value, and comparing the alarm threshold with data acquired in real time so as to send an alarm signal in time;
(6) When the equipment is about to be damaged, the burning-out is avoided by adjusting parameters.
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| CN103840437B (en) * | 2014-03-15 | 2016-06-15 | 李景禄 | The quick diagnosis of power distribution network ferromagnetic resonance and singlephase earth fault and processing method |
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| CN113466595A (en) * | 2021-07-13 | 2021-10-01 | 国网湖北省电力有限公司孝感供电公司 | Full-automatic nonlinear resistor type harmonic eliminator test system |
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