CN116961239B - Underground coal mine explosion-proof electrical equipment parameter monitoring system - Google Patents
Underground coal mine explosion-proof electrical equipment parameter monitoring system Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
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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
Abstract
The invention discloses a parameter monitoring system of underground coal mine explosion-proof electrical equipment, which relates to the technical field of parameter monitoring of the underground coal mine electrical equipment, and the scheme is provided that the system comprises a plurality of high-low voltage switch acquisition units, a plurality of metering display boxes, a transmission unit, a data calculation unit and an electric energy quality analysis unit; the high-low voltage switch acquisition units are communicated by adopting a standard protocol bus; the invention comprehensively and accurately grasps and knows the operation condition of the tested power supply network system, can quantitatively analyze the specific parameter indexes existing in the enterprise power grid system, can accurately reflect the 'health' condition of the whole power grid system, diagnoses the problem of influencing energy conservation and consumption reduction, directly adjusts or provides an implementation scheme according to the problem, ensures the electric energy quality and the service life of equipment, helps enterprises realize the safe and stable operation of the power grid system and the development targets of energy conservation and consumption reduction, and promotes the reduction of the energy consumption cost and the improvement of the economic benefit of the enterprises.
Description
Technical Field
The invention relates to the technical field of monitoring parameters of electrical equipment in a coal mine, in particular to a system for monitoring parameters of explosion-proof electrical equipment in the coal mine.
Background
According to the spirit of the related documents, the functions of monitoring and analyzing the underground electric energy quality are realized, and the electric energy quality is ensured to be the responsibility of the electric power department and the energy utilization unit. Along with the progress of scientific technology, a frequency converter and other novel electric equipment are continuously put into use, a large number of harmonic source equipment is connected into a power grid, so that the power grid is seriously polluted, the electric energy quality is deteriorated, the safety operation of the power grid and the safety electricity utilization of electricity utilization units form a great threat, the abnormal operation of the equipment is caused once, the relay protection is in misoperation, the rotor of a generator is burnt, and the electric equipment such as a user capacitor, a motor and the like is burnt. In order to improve and improve the electric energy quality, ensure the safety of the power grid and the interests of vast users, the energy consumption unit should strengthen the detection management of the harmonic waves of the power grid. Therefore, it is especially necessary to construct a coal mine power supply system power quality monitoring and analyzing system and perform an online real-time comprehensive physical examination on the power supply network system.
The coal mine power supply is generally supplied to the underground central substation by the ground substation 10kV voltage level and then to all the mining area substations, the ground substation is far away from the underground mining area substations, and various heavy-load devices such as fully-mechanized mining and fully-mechanized mining are used underground. According to the above situation, the coal mine has the following problems in terms of power supply quality:
1. along with the development, the underground power supply distance of the coal mine is longer and longer, the power of equipment on a working face is larger and larger, the current of high-power equipment is large in the starting process of starting, the harmonic wave of a power supply system is large, the flicker phenomenon is serious, the tail end power supply voltage is unstable and fluctuates greatly, the voltage drop of the power supply system reaches 20%, the problems of difficult starting, tripping operation and the like of the underground large-scale equipment are caused, the normal operation of other equipment is seriously influenced, the adverse situation is brought to the safety and economic benefit of the underground power supply system, the voltage drop of a circuit and a transformer is increased due to the increase of reactive power, and if the reactive power load is an impact reactive power load, the voltage is severely fluctuated, and the electric energy quality is reduced;
2. along with the development of coal mines, a large amount of high-power equipment is used to generate a large amount of reactive power, and the underground fully-mechanized mining working face is longer and longer in power supply distance, so that the load of the power supply equipment is large, and the related problems of low power factor of a power grid, low utilization rate of a transformer, serious heat transfer and generation phenomenon, large line loss and the like occur underground of the coal mines;
3. the increase of reactive power increases the total current, resulting in increased line and transformer losses;
4. the popularization of underground mining variable frequency application causes a large number of harmonic waves to be generated by a power grid, the power supply quality is seriously reduced, a plurality of faults with unknown reasons are generated, various interferences are generated, and the problems of equipment communication, equipment metering, protection, service life and the like are seriously affected.
Disclosure of Invention
The invention provides a parameter monitoring system for underground coal mine explosion-proof electrical equipment, which aims to solve the defects in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the parameter monitoring system for the underground explosion-proof electrical equipment of the coal mine comprises a plurality of high-low voltage switch acquisition units, a plurality of metering display boxes, a transmission unit, a data calculation unit and an electric energy quality analysis unit;
the high-low voltage switch acquisition units are communicated by adopting a standard protocol bus, acquire data are respectively transmitted to the corresponding metering display boxes, the high-low voltage switch acquisition units can detect the total harmonic distortion rate, the harmonic current and the component harmonic waves for 2-31 times, the high-low voltage switch acquisition units are matched with precision current transformers, the voltage and current data acquisition precision is 0.2 level, the electric quantity accumulation precision is 0.5 level, and the information of the voltage, the current, the power consumption and the like of the load can be accurately detected;
the metering display boxes receive data transmitted by the high-low voltage switch acquisition units in a field bus RS-485 mode, process the acquired data, and intensively upload the data to the data calculation unit through a main channel of an optical fiber Ethernet ring network of the transmission unit;
the data calculation unit receives the acquired data transmitted by the metering display box, calculates specific parameter indexes according to the acquired data, wherein the specific parameter indexes comprise harmonic content, active use, reactive loss, power factor, voltage variation, three-phase imbalance, multiple harmonic content and grid K waveform factor, and transmits the obtained specific parameter indexes into the electric energy quality analysis unit;
the electric energy quality analysis unit receives the specific parameter indexes transmitted by the data calculation unit, and analyzes real-time voltage, current, active power, reactive power, apparent power, power factor, inductive reactive power, capacitive reactive power, voltage harmonic component, current harmonic component and integral harmonic distortion rate, wherein the total current is increased by increasing the reactive power, so that the loss of a line and a transformer is increased.
Further, the system also comprises a health status scoring unit, a power quality reporting unit and an optimizing measure suggesting unit;
the health condition scoring unit receives the analysis data transmitted by the power quality analysis unit, diagnoses the health condition of the underground coal mine power grid according to the analysis data, scores the health condition, and compares the scores;
the optimizing measure suggestion unit receives the analysis data transmitted by the power quality analysis unit, intelligently gives out optimizing measure suggestions according to the analysis data, and selectively sends alarm instructions or adjustment instructions according to the optimizing measure suggestions;
the electric energy quality report unit receives the analysis data and the original data transmitted by the electric energy quality analysis unit, and generates a quality data report by the data in a form of a chart, so that the electric energy quality of the power grid is dynamically monitored and dynamically analyzed.
Further, the reactive power generator SVG is also included;
the SVG receives the adjustment instruction transmitted by the optimizing measure suggesting unit, rapidly and continuously outputs inductive or capacitive reactive power according to the optimizing measure suggesting, compensates reactive power which frequently fluctuates in the power grid, improves the power factor of the power grid, improves the power supply quality and the service efficiency of the high-voltage power distribution network, further reduces the power grid loss, obviously improves the safety and the reliability of the power supply system, and saves energy and prolongs the service life of the power transmission line and the electrical equipment.
Further, the device also comprises an alarm unit;
the alarm unit receives alarm signals of which the health scores are not up to standard after the health score comparison of the health score unit, alarms according to the alarm signals, receives alarm signals transmitted by the optimizing measure suggesting unit, gives an alarm according to the alarm signals in various modes, reminds workers of carrying out harmonic treatment, reactive power optimization and dynamic compensation, and when the harmonic content of a power grid exceeds a standard value, the alarm unit alarms to remind the workers of timely detection and treatment, so that power supply accidents and equipment damage are avoided.
Further, the system also comprises an electric energy data summarizing unit and a data calling unit;
the electric energy data summarizing unit receives the original data and the analysis data transmitted by the electric energy quality analysis unit, and summarizes and stores the data;
the data retrieving unit is used for retrieving the past electric energy data in the electric energy data summarizing unit.
Further, the high-low voltage switch electricity acquisition unit comprises a voltage acquisition module, a current acquisition module, an active power acquisition module, a reactive power acquisition module, an apparent power acquisition module, a power factor acquisition module, a sensitive reactive power acquisition module, a capacitive reactive power acquisition module, an electric power harmonic component acquisition module, a current harmonic component acquisition module and an integral harmonic distortion rate acquisition module;
the voltage acquisition module is used for acquiring the underground coal mine power grid voltage;
the current acquisition module is used for acquiring underground coal mine power grid current;
the active power acquisition module is used for acquiring active power of an underground coal mine power grid;
the reactive power acquisition module is used for acquiring reactive power of an underground coal mine power grid;
the apparent power acquisition module is used for acquiring apparent power of an underground coal mine power grid;
the power factor acquisition module is used for acquiring the power factor of the underground coal mine power grid;
the inductive reactive power collection module is used for collecting the inductive reactive power of the underground coal mine power grid;
the capacitive reactive power acquisition module is used for acquiring the capacitive reactive power of the underground coal mine power grid;
the electric quantity harmonic component acquisition module is used for acquiring electric quantity harmonic waves of an underground coal mine power grid;
the current harmonic component acquisition module is used for acquiring current harmonic waves of an underground coal mine power grid;
the integral harmonic distortion rate acquisition module is used for acquiring integral harmonic distortion rate of the underground coal mine power grid.
Further, the output ends of the high-low voltage switch electric acquisition units are respectively and electrically connected with the input ends of the corresponding metering display boxes, the output ends of the metering display boxes are connected with the input ends of the transmission units, the output ends of the transmission units are connected with the input ends of the data calculation units, the output ends of the data calculation units are connected with the input ends of the power quality analysis units, the output ends of the power quality analysis units are connected with the input ends of the power quality report units, the output ends of the power quality analysis units are connected with the input ends of the optimizing measure suggestion units, the output ends of the power quality analysis units are connected with the input ends of the health condition scoring units, the output ends of the health condition scoring units are connected with the input ends of the alarm units, the output ends of the optimizing measure suggestion units are connected with the input ends of the reactive generator SVG, the output ends of the power quality analysis units are connected with the input ends of the power data summarization units, and the input ends of the power data summarization units are connected with the output ends of the power data summarization units.
Compared with the prior art, the invention has the beneficial effects that:
the running condition of the measured power supply network system can be comprehensively and accurately mastered and known through the on-line detection and monitoring of the electric energy quality, the specific parameter indexes existing in the enterprise power grid system can be quantitatively analyzed, the health condition of the whole power grid system can be accurately reflected, the problem of influencing energy conservation and consumption reduction is diagnosed, the implementation scheme is directly regulated or provided according to the problem, the electric energy quality and the service life of equipment are guaranteed, the enterprise is helped to realize the safe and stable running of the power grid system and the development targets of energy conservation and consumption reduction, and the reduction of the energy consumption cost and the improvement of the economic benefit of the enterprise are promoted.
Drawings
Fig. 1 is a system block diagram of a parameter monitoring system of an underground coal mine explosion-proof electrical device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1: referring to fig. 1: the parameter monitoring system for the underground explosion-proof electrical equipment of the coal mine comprises a plurality of high-low voltage switch acquisition units, a plurality of metering display boxes, a transmission unit, a data calculation unit and an electric energy quality analysis unit;
the high-low voltage switch acquisition units are communicated by adopting a standard protocol bus, and respectively transmit acquisition data to the corresponding metering display boxes, wherein the high-low voltage switch acquisition units can detect the total harmonic distortion rate, the harmonic current and 2-31 times of component harmonic detection, the high-low voltage switch acquisition units are matched with precision current transformers, the voltage and current data acquisition precision is 0.2 level, the electric quantity accumulation precision is 0.5 level, and the information of the voltage, the current, the power, the electricity consumption and the like of the load can be accurately detected;
the plurality of metering display boxes receive the data transmitted by the high-low voltage switch acquisition unit in a field bus RS-485 mode, process the acquired data, and intensively upload the data to the data calculation unit through the optical fiber Ethernet main channel of the transmission unit;
the data calculation unit receives the collected data transmitted by the metering display box, calculates specific parameter indexes according to the collected data, wherein the specific parameter indexes comprise harmonic content, active use, reactive power loss, power factor, voltage variation, three-phase imbalance, multiple harmonic content and grid K waveform factor, and transmits the obtained specific parameter indexes into the electric energy quality analysis unit;
the electric energy quality analysis unit receives the specific parameter indexes transmitted by the data calculation unit, and analyzes real-time voltage, current, active power, reactive power, apparent power, power factor, inductive reactive power, capacitive reactive power, voltage harmonic component, current harmonic component and integral harmonic distortion rate, wherein the total current is increased by increasing the reactive power, so that the loss of a line and a transformer is increased;
the system also comprises a health status scoring unit, a power quality reporting unit and an optimizing measure suggesting unit;
the health condition scoring unit receives the analysis data transmitted by the power quality analysis unit, diagnoses the health condition of the underground coal mine power grid according to the analysis data, scores the health condition, and compares the scores;
the optimizing measure suggestion unit receives the analysis data transmitted by the power quality analysis unit, intelligently gives out optimizing measure suggestions according to the analysis data, and selectively sends alarm instructions or adjustment instructions according to the optimizing measure suggestions;
the power quality report unit receives the analysis data and the original data transmitted by the power quality analysis unit, and generates a quality data report by the data in a form of a chart, so that the power quality of the power grid is dynamically monitored and dynamically analyzed;
the reactive generator SVG is also included;
the SVG receives the adjustment instruction transmitted by the optimizing measure suggesting unit, rapidly and continuously outputs inductive or capacitive reactive power according to the optimizing measure suggesting, compensates reactive power which frequently fluctuates in the power grid, improves the power factor of the power grid, improves the power supply quality and the service efficiency of the high-voltage power distribution network, further reduces the power grid loss, obviously improves the safety and the reliability of the power supply system, and saves energy and prolongs the service life of the power transmission line and the electrical equipment;
the alarm device also comprises an alarm unit;
the alarm unit receives alarm signals of which the health scores are not up to standard after the scores of the health condition scoring units are compared, alarms are carried out according to the alarm signals, the alarm unit receives alarm signals transmitted by the optimizing measure suggesting unit, alarms are sent out according to the alarm signals in various modes, workers are reminded of carrying out harmonic wave treatment, reactive power optimization and dynamic compensation, and when the harmonic wave content of a power grid exceeds a standard value, the alarm unit alarms to remind the workers to detect and process in time, so that power supply accidents and equipment damage are avoided;
the system also comprises an electric energy data summarizing unit and a data calling unit;
the electric energy data summarizing unit receives the original data and the analysis data transmitted by the electric energy quality analysis unit, and summarizes and stores the data;
the data retrieving unit is used for retrieving the past electric energy data in the electric energy data summarizing unit.
Example 2: referring to fig. 1: the embodiment provides a technical scheme based on the embodiment 1: the high-low voltage switching power acquisition unit comprises a voltage acquisition module, a current acquisition module, an active power acquisition module, a reactive power acquisition module, an apparent power acquisition module, a power factor acquisition module, a sensitive reactive power acquisition module, a capacitive reactive power acquisition module, an electric quantity harmonic component acquisition module, a current harmonic component acquisition module and an integral harmonic distortion rate acquisition module;
the voltage acquisition module is used for acquiring the underground coal mine power grid voltage;
the current acquisition module is used for acquiring the underground coal mine power grid current;
the active power acquisition module is used for acquiring active power of an underground coal mine power grid;
the reactive power acquisition module is used for acquiring reactive power of an underground coal mine power grid;
the apparent power acquisition module is used for acquiring apparent power of an underground coal mine power grid;
the power factor acquisition module is used for acquiring the power factor of the underground coal mine power grid;
the inductive reactive power acquisition module is used for acquiring the inductive reactive power of the underground coal mine power grid;
the capacitive reactive power acquisition module is used for acquiring the capacitive reactive power of the underground coal mine power grid;
the electric quantity harmonic component acquisition module is used for acquiring electric quantity harmonic waves of an underground coal mine power grid;
the current harmonic component acquisition module is used for acquiring current harmonic of the underground coal mine power grid;
the integral harmonic distortion rate acquisition module is used for acquiring integral harmonic distortion rate of the underground coal mine power grid;
the output ends of the high-low voltage switch electric acquisition units are respectively and electrically connected with the input ends of the corresponding metering display boxes, the output ends of the metering display boxes are connected with the input ends of the transmission units, the output ends of the transmission units are connected with the input ends of the data calculation units, the output ends of the data calculation units are connected with the input ends of the electric energy quality analysis units, the output ends of the electric energy quality analysis units are connected with the input ends of the electric energy quality report units, the output ends of the electric energy quality analysis units are connected with the input ends of the optimizing measure suggestion units, the output ends of the health condition scoring units are connected with the input ends of the alarm units, the output ends of the optimizing measure suggestion units are connected with the input ends of the reactive generator SVG, the output ends of the electric energy quality analysis units are connected with the input ends of the electric energy data summarization units, and the input ends of the electric energy data summarization units are connected with the output ends of the data acquisition units.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. The underground coal mine explosion-proof electrical equipment parameter monitoring system is characterized by comprising a plurality of high-low voltage switch acquisition units, a plurality of metering display boxes, a transmission unit, a data calculation unit and an electric energy quality analysis unit;
the high-low voltage switch acquisition units are communicated by adopting a standard protocol bus, and respectively transmit acquisition data to the corresponding metering display boxes;
the metering display boxes receive data transmitted by the high-low voltage switch acquisition units in a field bus RS-485 mode, process the acquired data, and intensively upload the data to the data calculation unit through a main channel of an optical fiber Ethernet ring network of the transmission unit;
the data calculation unit receives the acquired data transmitted by the metering display box, calculates specific parameter indexes according to the acquired data, wherein the specific parameter indexes comprise harmonic content, active use, reactive loss, power factor, voltage variation, three-phase imbalance, multiple harmonic content and grid K waveform factor, and transmits the obtained specific parameter indexes into the electric energy quality analysis unit;
the electric energy quality analysis unit receives the specific parameter indexes transmitted by the data calculation unit and analyzes real-time voltage, current, active power, reactive power, apparent power, power factor, inductive reactive power, capacitive reactive power, voltage harmonic component, current harmonic component and integral harmonic distortion rate;
the system also comprises a health status scoring unit, a power quality reporting unit and an optimizing measure suggesting unit;
the health condition scoring unit receives the analysis data transmitted by the power quality analysis unit, diagnoses the health condition of the underground coal mine power grid according to the analysis data, scores the health condition, and compares the scores;
the optimizing measure suggestion unit receives the analysis data transmitted by the power quality analysis unit, intelligently gives out optimizing measure suggestions according to the analysis data, and selectively sends alarm instructions or adjustment instructions according to the optimizing measure suggestions;
the power quality report unit receives the analysis data and the original data transmitted by the power quality analysis unit, and generates a quality data report by the data in a form of a chart;
the reactive generator SVG is also included;
the SVG receives the adjustment instruction transmitted by the optimizing measure suggesting unit, rapidly and continuously outputs inductive or capacitive reactive power according to the optimizing measure suggesting, compensates reactive power which frequently fluctuates in the power grid, improves the power factor of the power grid, and improves the power supply quality and the use efficiency of the high-voltage power distribution network;
the alarm device also comprises an alarm unit;
the alarm unit receives alarm signals of which the health scores are not up to standard after the scores of the health condition scoring units are compared, alarms are carried out according to the alarm signals, the alarm unit receives the alarm signals transmitted by the optimizing measure suggesting unit, and gives an alarm according to the alarm signals in various modes, so that workers are reminded of carrying out harmonic wave treatment, reactive power optimization and dynamic compensation;
the system also comprises an electric energy data summarizing unit and a data calling unit;
the electric energy data summarizing unit receives the original data and the analysis data transmitted by the electric energy quality analysis unit, and summarizes and stores the data;
the data retrieving unit is used for retrieving the past electric energy data in the electric energy data summarizing unit;
the high-low voltage switch acquisition unit comprises a voltage acquisition module, a current acquisition module, an active power acquisition module, a reactive power acquisition module, an apparent power acquisition module, a power factor acquisition module, a sensitive reactive power acquisition module, a capacitive reactive power acquisition module, an electric quantity harmonic component acquisition module, a current harmonic component acquisition module and an integral harmonic distortion rate acquisition module;
the voltage acquisition module is used for acquiring the underground coal mine power grid voltage;
the current acquisition module is used for acquiring underground coal mine power grid current;
the active power acquisition module is used for acquiring active power of an underground coal mine power grid;
the reactive power acquisition module is used for acquiring reactive power of an underground coal mine power grid;
the apparent power acquisition module is used for acquiring apparent power of an underground coal mine power grid;
the power factor acquisition module is used for acquiring the power factor of the underground coal mine power grid;
the inductive reactive power collection module is used for collecting the inductive reactive power of the underground coal mine power grid;
the capacitive reactive power acquisition module is used for acquiring the capacitive reactive power of the underground coal mine power grid;
the electric quantity harmonic component acquisition module is used for acquiring electric quantity harmonic waves of an underground coal mine power grid;
the current harmonic component acquisition module is used for acquiring current harmonic waves of an underground coal mine power grid;
the integral harmonic distortion rate acquisition module is used for acquiring integral harmonic distortion rate of the underground coal mine power grid.
2. The underground coal mine explosion-proof electrical equipment parameter monitoring system according to claim 1, wherein the output ends of the high-low voltage switch acquisition units are respectively electrically connected with the input ends of the corresponding metering display boxes, the output ends of the metering display boxes are connected with the input ends of the transmission units, the output ends of the transmission units are connected with the input ends of the data calculation units, the output ends of the data calculation units are connected with the input ends of the power quality analysis units, the output ends of the power quality analysis units are connected with the input ends of the power quality reporting units, the output ends of the power quality analysis units are connected with the input ends of the optimizing measure suggestion units, the output ends of the power quality analysis units are connected with the input ends of the health condition scoring units, the output ends of the optimizing measure suggestion units are connected with the input ends of the alarm units, the output ends of the optimizing measure suggestion units are connected with the input ends of the reactive generator SVG, the output ends of the power quality analysis units are connected with the input ends of the power quality analysis units, and the data collection units are connected with the input ends of the data collection units.
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