CN111289821A - Coal mine underground power supply system electric energy quality monitoring device - Google Patents
Coal mine underground power supply system electric energy quality monitoring device Download PDFInfo
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- CN111289821A CN111289821A CN202010126395.5A CN202010126395A CN111289821A CN 111289821 A CN111289821 A CN 111289821A CN 202010126395 A CN202010126395 A CN 202010126395A CN 111289821 A CN111289821 A CN 111289821A
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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
Abstract
The invention relates to the field of power supply system power monitoring, in particular to a power quality monitoring device of a coal mine underground power supply system, which comprises an explosion-proof shell, a monitoring module, a signal transmission unit, a display module and a power module, wherein the explosion-proof shell is arranged on the monitoring module; a main cavity and a wiring chamber are separated into by the baffle in the explosion-proof casing, the main cavity is used for placing each component unit, each components and parts, installs monitoring module, signal transmission unit and power module in the main cavity, signal transmission unit and the display module signal connection of installing on the door body of casing, it has miniature circuit breaker to establish ties on power module's outlet circuit. The monitoring module is used for calculating, processing and displaying the electric energy quality of the sampled data, and the processing result can be uploaded to a ground centralized control center through an underground Ethernet network and fused with a ground power supply system monitoring system to monitor the electric energy quality of all mines and share data, so that the underground electric energy quality can be monitored on site and on line.
Description
Technical Field
The invention relates to the field of power supply system power monitoring, in particular to a power quality monitoring device of a coal mine underground power supply system.
Background
Since 2002, China continuously strengthens the requirements on coal mine safety production, and the coal industry starts to carry out large-scale technical upgrading and reconstruction. At present, the automation and informatization degrees of coal mines are continuously improved, and along with the continuous deep development of the intelligent power grid technology and the Internet of things technology, the intelligent power supply system for coal mines is gradually popularized. The requirement on the electric energy quality is higher and higher when the electric power demand of a coal mine is increased, the quality of the electric energy quality directly influences the safety production of the coal mine, and the on-line monitoring on the electric energy quality of a coal mine power supply system is necessary to carry out deep research. The operation condition and the operation loss of the coal mine underground power supply system and the electric equipment can be known in real time, data support is provided for the implementation method for reducing the loss and improving the power utilization efficiency, and the method becomes the basis of power management.
The research on the power quality is relatively late in China, so the research on the power quality monitoring is relatively laggard. Compared with foreign detection devices, domestic products have the defects of incomplete detection function and low precision.
At present, the traditional power quality monitoring system or device is only suitable for the ground conventional environment, has no explosion-proof property and cannot realize the monitoring of the power supply equipment in the explosion environment; meanwhile, the traditional power quality monitoring system or device has the characteristic of simplification, and only one or a plurality of performance indexes can be monitored, so that a worker cannot find problems timely and comprehensively, and further cannot rapidly and accurately process corresponding faults, and power supply accidents are caused.
Disclosure of Invention
The technical scheme adopted by the invention for solving one of the technical problems is as follows: a coal mine underground power supply system electric energy quality monitoring device comprises an explosion-proof shell, a monitoring module, a signal transmission unit, a display module and a power supply module; a main cavity and a wiring chamber are separated into by the baffle in the explosion-proof casing, the main cavity is used for placing each constitution unit, each components and parts, installs monitoring module, signal transmission unit and power module in the main cavity, signal transmission unit and the display module signal connection of installing on the door body of casing, it has miniature circuit breaker to establish ties on power module's outlet circuit, monitoring module passes through signal transmission to signal transmission unit after RS485 port will be handled, the wiring chamber is used for realizing the electrical isolation of outside wiring and inside components and parts.
The combined units and the components are independently placed in the main cavity, so that the combined unit and the components are effectively suitable for special underground explosion environment and are safer to use. The external wiring and the electrical isolation of the internal components can meet the effective explosion-proof requirement.
Preferably, power module installs in explosion-proof housing bottom for 660V power with the external access truns into 220V, provides the power for inside modulization socket, provides the power for power module (220V changes 24V) simultaneously, and power module output 24V provides working power for the inside PLC of device and monitoring module simultaneously, guarantees inside PLC and monitoring module's normal operating.
Preferably, the explosion-proof shell is welded by Q235A carbon steel.
The design of the explosion-proof shell and the internal structural part conforms to the following national standard:
GB3836.1 explosive environment part 1: the general requirements of the equipment.
GB3836.2 explosive environment part 2: the equipment is protected by an explosion-proof shell d.
GB3836.4 explosive environment part 4: there are intrinsically safe "i" protected devices.
Preferably, explosion-proof casing comprises two mutually independent explosion-proof cavity in main cavity and wiring chamber, the main cavity adopts the quick-open door body to realize sealed, be in promptly increase interior callipers rule, outer callipers rule around the cavity of main cavity and the door body flange, realize the inseparable combination of a body and explosion-proof casing through driving the callipers rule when the door body opens and shuts, the wiring chamber adopts the mode that the screw compressed tightly to realize the sealing and the explosion-proof of a body and explosion-proof casing.
Preferably, the monitoring module comprises a processor, and the processor comprises a plurality of groups of voltage signal input ends and current signal input ends.
Preferably, the collection terminal adopts PY400 of south German electric, has voltage, current input terminal, has net gape communication end simultaneously.
The specific working principle of the acquisition terminal is as follows:
the processor integrates and packs a plurality of groups of voltage and current signals and transmits data through RS 485.
Preferably, the signal transmission unit is composed of a signal receiving module and a signal processing module.
The signal receiving module and the signal processing module convert the accessed signal data, the processed signal is displayed in an Ethernet mode through the display module, and the data can also be uploaded to a ground monitoring center through the Ethernet to realize online monitoring.
The signal receiving module and the signal processing module have a multi-loop signal input group, can receive a plurality of groups of voltage and current signals, and process and calculate the received signals according to the national standard:
and through voltage and current channels, phase and zero correction are carried out on the introduced data signals, digital filtering is carried out, and the required parameter signals are obtained through calculation, decomposition and other modes.
Preferably, the display module adopts TPC7062Ti to communicate with the signal receiving and processing unit through the network port.
The industrial configuration software is adopted to develop and display monitoring software, so that the real-time data of the equipment can be displayed on site, and the intuitive data display and analysis processing can be carried out in the modes of a graph, a table, a curve and the like.
The invention has the beneficial effects that: the monitoring module is used for calculating, processing and displaying the electric energy quality of the sampled data, and the processing result can also be uploaded to a ground centralized control center through an underground Ethernet network and fused with a ground power supply system monitoring system to monitor the electric energy quality of all mines and share data, so that the underground electric energy quality can be monitored on site and on line; the purposes of accurate power utilization management, reduction of power consumption per ton of coal, improvement of power supply quality and improvement of system safety can be achieved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a rear view device of the present invention.
FIG. 2 is a schematic view of the front view apparatus of the present invention.
Fig. 3 is a flow chart of the working system of the present invention.
Fig. 4 is a data processing schematic of the present invention.
Fig. 5 is an electrical schematic of the present invention.
In the figure, 1, an explosion-proof shell; 101. a partition plate; 102. a main chamber; 103. a wiring cavity; 104. a door body; 105. a screw; 2. A monitoring module; 3. a signal transmission unit; 4. A display module; 5. A power supply module; 6. a miniature circuit breaker; 7. a transformer.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-5, the power quality monitoring device of the coal mine underground power supply system comprises an explosion-proof shell 1, a monitoring module 2, a signal transmission unit 3, a display module 4 and a power module 5; separate into a main cavity 102 and a wiring chamber 103 by baffle 101 in the explosion-proof housing 1, main cavity 102 is used for placing each constitution unit, each components and parts, installs monitoring module 2, signal transmission unit 3 and power module 5 in main cavity 102, signal transmission unit 3 and the 4 signal connection of display module who installs on the door body 104 of casing, it has miniature circuit breaker 6 to establish ties on power module 5's outlet line, still includes a transformer 7 that sets up the power supply system generating line that passes through cable and power module 5 in main cavity 102, miniature circuit breaker 6 are connected, signal transmission to signal transmission unit 3 after monitoring module 2 will handle through the RS485 port, wiring chamber 103 is used for realizing the electrical isolation of outside wiring and inside components and parts.
The individual placement of the components and the units in the main chamber 102 can be effectively applied to the special explosion environment in the well, and the use is safer. The external wiring and the electrical isolation of the internal components can meet the effective explosion-proof requirement.
Preferably, power module 5 installs in explosion-proof housing 1 bottom for 660V power with the external access truns into 220V, provides the power for inside modularization socket, provides the power for power module (220V changes 24V) simultaneously, and power module output 24V provides working power for the inside PLC of device and monitoring module 2 simultaneously, guarantees inside PLC and monitoring module 2's normal operating.
Preferably, the explosion-proof shell 1 is welded by Q235A carbon steel.
The design of the explosion-proof shell 1 and the internal structural components conforms to the following national standard:
GB3836.1 explosive environment part 1: the general requirements of the equipment.
GB3836.2 explosive environment part 2: the equipment is protected by an explosion-proof shell d.
GB3836.4 explosive environment part 4: there are intrinsically safe "i" protected devices.
Preferably, explosion-proof housing 1 comprises two mutually independent explosion-proof cavity in main chamber 102 and wiring chamber 103, main chamber 102 adopts quick-open door body 104 to realize sealedly, be in promptly increase interior callipers rule, outer callipers rule around the cavity of main chamber 102 and the door body 104 flange, realize the inseparable combination of door body 104 and explosion-proof housing 1 through driving the callipers rule when door body 104 opens and shuts, wiring chamber 103 adopts the mode that screw 105 compressed tightly to realize the sealing and the explosion-proof of door body 104 and explosion-proof housing 1.
Preferably, the monitoring module 2 comprises a processor, and the processor comprises a plurality of groups of voltage signal input ends and current signal input ends.
Preferably, the collection terminal adopts PY400 of south German electric, has voltage, current input terminal, has net gape communication end simultaneously.
The specific working principle of the acquisition terminal is as follows:
the processor integrates and packs a plurality of groups of voltage and current signals and transmits data through RS 485.
Preferably, the signal transmission unit 3 is composed of a signal receiving module and a signal processing module.
The signal receiving module and the signal processing module convert the accessed signal data, the processed signal is displayed in an Ethernet mode through the display module 4, and the data can also be uploaded to a ground monitoring center through the Ethernet to realize online monitoring.
The signal receiving module and the signal processing module have a multi-loop signal input group, can receive a plurality of groups of voltage and current signals, and process and calculate the received signals according to the national standard:
and through voltage and current channels, phase and zero correction are carried out on the introduced data signals, digital filtering is carried out, and the required parameter signals are obtained through calculation, decomposition and other modes.
Preferably, the display module 4 adopts TPC7062Ti to communicate with the signal receiving and processing unit through the internet access.
The industrial configuration software is adopted to develop and display monitoring software, so that the real-time data of the equipment can be displayed on site, and the intuitive data display and analysis processing can be carried out in the modes of a graph, a table, a curve and the like.
The technical scheme includes that voltage and current signals of a power supply system are collected through a voltage current transformer on site, the voltage and current signals are connected to a monitoring unit through a horn mouth of a device and are transmitted to a signal receiving and processing unit in an RS485 mode after being collected, the signal receiving and processing unit is used for carrying out data amplification, data separation and other processing on the signals, processed signal data are connected to a display unit through a net mouth to be displayed in real time, and the processed signal data can be uploaded to an upper computer system on the ground through a net mouth and an underground looped network, so that ground monitoring is facilitated.
In the electrical schematic, the components are explained:
a monitoring module:
the connection mode and the function are as follows: the monitoring module is provided with a voltage input port and a current input port, the voltage transformer and the current transformer are connected to the input interface of the monitoring module through shielded wires, and the monitoring module receives voltage and current signals; meanwhile, the monitoring module is connected with the signal receiving and processing unit through a network port or an RS485 port through a network cable or a shielding cable, and converts received voltage and current signals and transmits the converted signals to the signal receiving and processing unit for signal processing and transmission.
The signal receiving and processing unit:
the connection mode and the function are as follows: the signal receiving and processing unit is connected with the monitoring module through a network cable or a shielding cable through a network port or an RS485 port and receives data information of the monitoring module; meanwhile, the display module is connected with the network port through a network cable, and the display module can display field parameters and the state of the power supply system in real time;
2P miniature circuit breaker 6:
the connection mode and the function are as follows: the three-hole socket, the power module and the 4P miniature circuit breaker 6 are connected through cables to cut off and connect a circuit;
three-hole socket:
the connection mode and the function are as follows: the test socket is connected with a 2P miniature circuit breaker 6 and the ground through a cable;
a power supply module:
the connection mode and the function are as follows: the 2P miniature circuit breaker 6, the signal receiving and processing unit and the monitoring module are connected through cables to provide power for the signal receiving and processing unit and the monitoring module;
a voltage transformer:
the connection mode and the function are as follows: connecting with a power supply system bus through a cable, and measuring a main loop voltage signal; the device is connected with the monitoring module through a shielded wire, and a measured voltage signal is input into the monitoring module;
4P miniature circuit breaker 6:
the connection mode and the function are as follows: the transformer 7 and the 2P miniature circuit breaker 6 are connected through cables to be used as a main switch of a power circuit;
and (7) a transformer:
the connection mode and the function are as follows: the device is connected with a power supply system bus and a 4P miniature circuit breaker 6 through cables to provide power for the whole device.
A current transformer:
the connection mode and the function are as follows: and the monitoring module is connected with the shielding wire, measures the bus current signal of the power supply system, and inputs the measured current signal into the monitoring module.
From the above description of the connection relationship and the electrical schematic diagram itself and the basic knowledge in the art, those skilled in the art can understand that:
a power supply section: the main power enters the shell and is connected with a control transformer 7, the transformer 7 outputs a 220V power supply, the power supply enters a power supply module, and the power supply module outputs a 24V power supply to provide power for the signal receiving and processing unit, the monitoring module and the display module;
the monitoring module is provided with a voltage input port and a current input port, the voltage transformer and the current transformer are connected with the monitoring module through the input ports, and voltage and current signals of the power supply system are accessed to the monitoring module; meanwhile, the monitoring module is connected with the signal receiving and processing unit through an RS485 port, and transmits the collected signals to the signal receiving and processing unit for signal processing;
and the signal receiving and processing unit is used for processing the signals and then connecting the processed signals with the display module through the network port, and the display module can display the field parameters and the state of the power supply system in real time.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention, and the technical solutions are all covered in the scope of the claims and the specification of the present invention; it will be apparent to those skilled in the art that any alternative modifications or variations to the embodiments of the present invention may be made within the scope of the present invention.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (6)
1. The utility model provides a colliery is power supply system electric energy quality monitoring devices in pit which characterized in that: the explosion-proof monitoring device comprises an explosion-proof shell, a monitoring module, a signal transmission unit, a display module and a power supply module; a main cavity and a wiring chamber are separated into by the baffle in the explosion-proof casing, the main cavity is used for placing each constitution unit, each components and parts, installs monitoring module, signal transmission unit and power module in the main cavity, signal transmission unit and the display module signal connection of installing on the door body of casing, it has miniature circuit breaker to establish ties on power module's outlet circuit, monitoring module passes through signal transmission to signal transmission unit after RS485 port will be handled, the wiring chamber is used for realizing the electrical isolation of outside wiring and inside components and parts.
2. The device for monitoring the power quality of the coal mine underground power supply system according to claim 1 or 2, which is characterized in that: the power module is installed in explosion-proof housing bottom for the 660V power of external access truns into 220V, provides the power for inside modulization socket, provides the power for power module (220V changes 24V) simultaneously, and power module output 24V provides working power for the inside PLC of device and monitoring module simultaneously, guarantees inside PLC and monitoring module's normal operating.
3. The device for monitoring the power quality of the coal mine underground power supply system according to claim 2 or 3, which is characterized in that: the explosion-proof shell is welded by Q235A carbon steel.
4. The coal mine underground power supply system power quality monitoring device according to claim 3, characterized in that: the monitoring module comprises a processor, and the processor comprises a plurality of groups of voltage signal input ends and current signal input ends.
5. The coal mine underground power supply system power quality monitoring device according to claim 4, characterized in that: the signal transmission unit is composed of a signal receiving module and a signal processing module.
6. The device for monitoring the power quality of the coal mine underground power supply system according to claim 5, is characterized in that: the display module adopts TPC7062Ti and communicates with the signal receiving and processing unit through the network port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010126395.5A CN111289821A (en) | 2020-02-28 | 2020-02-28 | Coal mine underground power supply system electric energy quality monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010126395.5A CN111289821A (en) | 2020-02-28 | 2020-02-28 | Coal mine underground power supply system electric energy quality monitoring device |
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| CN111289821A true CN111289821A (en) | 2020-06-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707894A (en) * | 2020-06-19 | 2020-09-25 | 中国煤炭科工集团太原研究院有限公司 | Mining electric energy quality on-line measuring system |
| CN113740619A (en) * | 2021-08-13 | 2021-12-03 | 煤炭科学技术研究院有限公司 | Electromagnetic signal monitoring device |
| CN116961239A (en) * | 2023-09-18 | 2023-10-27 | 山东开创电气有限公司 | Underground coal mine explosion-proof electrical equipment parameter monitoring system |
| CN113740619B (en) * | 2021-08-13 | 2024-04-05 | 煤科(北京)检测技术有限公司 | Electromagnetic signal monitoring device |
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| CN104577741A (en) * | 2013-10-29 | 2015-04-29 | 河南省济源市矿用电器有限责任公司 | Mining explosive-proof high-voltage measuring cabinet |
| CN204719085U (en) * | 2015-06-26 | 2015-10-21 | 南京绿纹电气有限公司 | A kind of electric energy quality test device being applicable to underground coal mine low voltage electric network |
| CN209764920U (en) * | 2019-03-26 | 2019-12-10 | 长治学院 | Mining explosion-proof type electric energy quality monitoring device |
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| CN203101535U (en) * | 2012-11-26 | 2013-07-31 | 安徽理工大学 | Wireless underground electric energy quality detection system based on wavelet nerve network |
| CN203614132U (en) * | 2013-07-29 | 2014-05-28 | 煤炭科学研究总院 | Online power grid insulated monitoring system for underground coal mine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707894A (en) * | 2020-06-19 | 2020-09-25 | 中国煤炭科工集团太原研究院有限公司 | Mining electric energy quality on-line measuring system |
| CN113740619A (en) * | 2021-08-13 | 2021-12-03 | 煤炭科学技术研究院有限公司 | Electromagnetic signal monitoring device |
| CN113740619B (en) * | 2021-08-13 | 2024-04-05 | 煤科(北京)检测技术有限公司 | Electromagnetic signal monitoring device |
| CN116961239A (en) * | 2023-09-18 | 2023-10-27 | 山东开创电气有限公司 | Underground coal mine explosion-proof electrical equipment parameter monitoring system |
| CN116961239B (en) * | 2023-09-18 | 2023-12-15 | 山东开创电气有限公司 | Underground coal mine explosion-proof electrical equipment parameter monitoring system |
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