CN102882272B - Intelligent alternating current distribution lightning protection and branch energy consumption monitoring system of base station - Google Patents
Intelligent alternating current distribution lightning protection and branch energy consumption monitoring system of base station Download PDFInfo
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- CN102882272B CN102882272B CN201210213138.0A CN201210213138A CN102882272B CN 102882272 B CN102882272 B CN 102882272B CN 201210213138 A CN201210213138 A CN 201210213138A CN 102882272 B CN102882272 B CN 102882272B
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Abstract
The invention discloses an intelligent alternating current distribution lightning protection and branch energy consumption monitoring system of a base station, which comprises a main control display unit as well as an alternating current distribution comprehensive monitoring unit, a branch switch state expansion unit and a multi-path full electric quantity measurement unit which are arranged in parallel and respectively connected with the main control display unit via a communication bus. The system, disclosed by the invention, can overcome the defects of the prior art, including high cost, less functions, low stability, inconvenience in application and the like. Therefore, the system has the advantages of low cost, multiple functions, good stability and convenience in application.
Description
Technical field
The present invention relates to communication base station equipment technical field, particularly, relate to the intelligent AC distribution lightning protection of a kind of base station and branch road energy-consumption monitoring system.
Background technology
At present, the monitoring of base station power & environment supervision system on AC power supply, also rests on the monitoring level of total current, voltage substantially; To the centralized monitor of AC power, do not accomplish conduct monitoring at all levels, and ignore the examination of base station generating business, AC load energy consumption data can not be provided.Therefore, cause the inconvenience of many business evaluatings, and the location of fault is not too accurate, causes the inconvenience of management, embodies completely or play the effect of power & environment supervision to AC power and equipment.
The conduct monitoring at all levels to ac power will be accomplished at present, very complicated loaded down with trivial details by traditional supervising device, instrument and meter etc.; Need a large amount of instrument and meters (as: kilowatt-hour meter, multifunctional electric meter etc.), and require the Intelligent Communications Interface with access power & environment supervision.Therefore, adopt that traditional approach cost is high, insufficiency, poor stability, and install, construction, debugging, safeguard very inconvenience.
Realizing in process of the present invention, inventor finding at least to exist in prior art that cost is high, function is few, poor stability and the defect such as use is inconvenient.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose the intelligent AC distribution lightning protection of a kind of base station and branch road energy-consumption monitoring system, to realize that cost is low, function is many, good stability and advantage easy to use.
For achieving the above object, the technical solution used in the present invention is: the intelligent AC distribution lightning protection of a kind of base station and branch road energy-consumption monitoring system, comprise master control display unit, and parallel to arrange and the full electrical measurement unit of AC distribution comprehensive monitoring unit, branch switch conditional extensions unit and multichannel be connected with described master control display unit respectively by communication bus.
Further, described master control display unit, comprises the first single-chip microcomputer, and the human-computer interaction module be connected with described first single-chip microcomputer respectively, alarm output module, communication module and the first communication interface of being connected with communication bus.
Further, described human-computer interaction module, mainly comprises the LCDs and man-machine instruction button that are connected with the first single-chip microcomputer respectively.
Further, described LCDs, comprises the man-machine LCD that model is LCM19264.
Further, described AC distribution comprehensive monitoring unit, comprise second singlechip, the comprehensive monitoring module be connected with described second singlechip respectively, total metering module, 16 branch switch state monitoring module and the second communication interface be connected with communication bus, and with the electrical parameter measuring module of described total metering model calling.
Further, described comprehensive monitoring module, comprising walks abreast arranges and the lightning protection state monitoring modular, mains-supplied monitoring modular and the oil machine that are connected with described second singlechip are respectively powered monitoring modular.
Further, described branch switch conditional extensions unit, comprises the 3rd single-chip microcomputer, and the 16 membership monitoring modulars be connected with described 3rd single-chip microcomputer respectively and the third communication interface be connected with communication bus.
Further, the full electrical measurement unit of described multichannel, comprises the 4th single-chip microcomputer, and the multiple measurement branch road be connected with described 4th single-chip microcomputer respectively and the 4th communication interface be connected with communication bus.
Further, described multiple measurement branch road is parallel to be arranged, and each measurement branch road comprises the electrical parameter measuring module and metering module that are connected to the 4th single-chip microcomputer successively.
Further, described communication bus, comprises RS485 bus and/or RS422 bus and/or RS232 bus and/or industry ethernet;
First to fourth communication interface described, comprises RS485 communication interface and/or RS422 communication interface and/or RS232 communication interface and/or ethernet interface.
The base station intelligent AC distribution lightning protection of various embodiments of the present invention and branch road energy-consumption monitoring system, owing to comprising master control display unit, and parallel to arrange and the full electrical measurement unit of AC distribution comprehensive monitoring unit, branch switch conditional extensions unit and multichannel be connected with master control display unit respectively by communication bus; AC distribution equipment running status and data, the running status of thunder resisting equipment, the electricity consumption situation of AC load equipment and civil power and hydro power generation situation can be provided for the power & environment supervision system of base station, facilitate user to fully understand and grasp base station AC power and load equipment ruuning situation, facilitate operator to the management evaluation of generating business, and for base station energy consumption management, energy-saving and emission-reduction provide and analyze data reliably comprehensively; Thus can overcome in prior art that cost is high, function is few, the defect of poor stability and use inconvenience, to realize that cost is low, function is many, good stability and advantage easy to use.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the operation principle schematic diagram according to base station of the present invention intelligent AC distribution lightning protection and branch road energy-consumption monitoring system;
Fig. 2 a-Fig. 2 h (the first communication interface, as RS232 interface/R485 interface/R422 interface), Fig. 3 a-Fig. 3 j (the first single-chip microcomputer), Fig. 4 a-Fig. 4 e (fault warning relay output module), Fig. 5 a-Fig. 5 d (man-machine LCD, LCM19264), Fig. 6 a-Fig. 6 i (man-machine instruction button) and Fig. 7 (ethernet interface) be electronic schematic diagram according to master control display unit in base station of the present invention intelligent AC distribution lightning protection and branch road energy-consumption monitoring system;
Fig. 8 a-Fig. 8 h (oil machine civil power lightening protect module) and Fig. 9 a-Fig. 9 o (with the interface circuit of metering module) is the electronic schematic diagram according to AC distribution comprehensive detection unit in base station of the present invention intelligent AC distribution lightning protection and branch road energy-consumption monitoring system;
Figure 10 a-Figure 10 k is the electronic schematic diagram according to 16 branch switch conditional extensions unit in base station of the present invention intelligent AC distribution lightning protection and branch road energy-consumption monitoring system;
Figure 11 a-Figure 11 h (CPU and RS485 communication interface), Figure 12 a-Figure 12 j (electrical parameter measuring module) and Figure 13 a-Figure 13 b (metering module) are electronic schematic diagram according to the full electric power detection unit of multichannel in base station of the present invention intelligent AC distribution lightning protection and branch road energy-consumption monitoring system (with the interface circuit of metering module see Fig. 9 a-Fig. 9 o).
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, as shown in Fig. 1-Figure 14 b, provide the intelligent AC distribution lightning protection of a kind of base station and branch road energy-consumption monitoring system.
As shown in Figure 1, the present embodiment comprises master control display unit, and parallel arranges and the full electrical measurement unit of AC distribution comprehensive monitoring unit, branch switch conditional extensions unit and multichannel be connected with master control display unit respectively by communication bus (as RS485 bus).The full electrical measurement unit of AC distribution comprehensive monitoring unit, branch switch conditional extensions unit and multichannel, can be connected with master control display unit by RS485 communication mode.
Wherein, above-mentioned master control display unit, comprise the first single-chip microcomputer, and the human-computer interaction module be connected with the first single-chip microcomputer respectively, alarm output module, communication module and the first communication interface (as a RS485 communication interface) of being connected with communication bus.This human-computer interaction module, mainly comprises the LCDs and man-machine instruction button that are connected with the first single-chip microcomputer respectively.This LCDs, comprises the man-machine LCD that model is LCM19264.This alarm output module, can comprise in fault warning relay output module, audible and visual alarm output module and dry contact alarm output module any one or multiple.
During concrete enforcement, the electrical principle of the first communication interface, see Fig. 2 a-Fig. 2 h, the second to the 5th communication interface can be arranged with reference to the first communication interface; The electrical principle of the first single-chip microcomputer, see Fig. 3 a-Fig. 3 j; The electrical principle of fault warning relay output module, see Fig. 4 a-Fig. 4 e; The electrical principle of man-machine LCD, see Fig. 5 a-Fig. 5 d; The electrical principle of man-machine instruction button, see Fig. 6 a-Fig. 6 i; The electrical principle of ethernet interface, see Fig. 7.
Such as, the electric parameter display interface of above-mentioned man-machine LCD display, can comprise:
(1) electric current, voltage display interface
[note]: time 1. normal, show this interface, when electric current, voltage have an alarm item, this highlights display; 2. lightning protection is three kinds of states: lost efficacy, normally, not show (during without lightening protect); 3. fault/branch road: the branch road quantity broken down/configuration branch road sum; 4. branch trouble number: highlight the branch road quantity showing and break down.
(2) active power, reactive power display interface
[note]: 1. Pa, Pb, Pc:A phase, B phase, C phase active power; 2. Qa, Qb, Qc:A phase, B phase, C phase reactive power; 3. P: close phase active power; 4. Q: close phase reactive power.
(3) close phase power factor, frequency, total electric energy and oil machine time showing interface
[note]: 1. F: represent mains frequency, COS ∮: represent and close phase power factor; 2. EP: close phase active energy, EQ: close phase reactive energy; 3. civil power: represent mains-supplied, oil machine is powered display " oil machine ".
(4) civil power and hydro power generation electric energy display interface
(5) on off state display interface
[note]: 1. every page of display 9 loops, proceed to second page display after exceeding 9 loops; 2. 1/2 Middle molecule is expressed as current switch states display page, and denominator represents how many pages altogether; 3. press at this page and key is set tripping alarm setting is carried out to closing circuit, when arranging, " conjunction " can be arranged to RUN; RUN can be arranged " conjunction "; ERR can be arranged " dividing ", and " dividing " cannot be arranged.
(6) branch road metering display interface
(7) interface is set
[note]: 1. press after " page turning " key enters this interface, presses the correspondence position that " setting " key makes cursor move to need to arrange, modifies, by " page turning " bond bundle after being provided with; 2. electric energy resets after resetting and inputting password (acquiescence) 1234 when resetting with generating dutation; 3. default voltage alarm limit value is 187-242V, and electric current alarm limit value is 000-100A.
Above-mentioned AC distribution comprehensive monitoring unit, comprise second singlechip, the comprehensive monitoring module be connected with second singlechip respectively, total metering module, 16 branch switch state monitoring module and the second communication interface (as the 2nd RS485 communication interface) is connected with communication bus, and with total electrical parameter measuring module measuring model calling.This comprehensive monitoring module, comprising walks abreast arranges and the lightning protection state monitoring modular, mains-supplied monitoring modular and the oil machine that are connected with second singlechip are respectively powered monitoring modular.This AC distribution comprehensive monitoring unit, forms primarily of second singlechip, electrical parameter measuring module, total metering module, comprehensive monitoring module monitoring modulars such as (i.e.) lightning protection, civil power, oil machines; There are total current, voltage, gross power, frequency, power factor etc. detect and total electricity, hydro power generation electricity, mains-supplied electric quantity detection function, and there are 16 road branch switch status monitoring functions.During concrete enforcement, the electrical principle of comprehensive monitoring module, see the oil machine civil power lightening protect module that figure Fig. 8 a-Fig. 8 h shows; With the interface circuit of metering module, see Fig. 9 a-Fig. 9 o.
Above-mentioned branch switch conditional extensions unit, comprises the 3rd single-chip microcomputer, and the 16 membership monitoring modulars be connected with the 3rd single-chip microcomputer respectively and the third communication interface (as the 3rd RS485 communication interface) be connected with communication bus.This branch switch conditional extensions unit, forms primarily of the 3rd single-chip microcomputer and 16 road membership monitoring modulars, see Figure 10 a-Figure 10 k, is mainly used in the monitoring of branch switch state.
The full electrical measurement unit of above-mentioned multichannel, comprises the 4th single-chip microcomputer, and the multiple measurement branch road be connected with the 4th single-chip microcomputer respectively and the 4th communication interface (as the 4th RS485 communication interface) be connected with communication bus.The plurality of measurement branch road is parallel to be arranged, and each measurement branch road comprises the electrical parameter measuring module and metering module that are connected to the 4th single-chip microcomputer successively.This Multi-path electricity amount detection unit, form with multiple metering module (as 8 metering modules) and the electrical quantity observation circuit of corresponding metering module primarily of the 4th single-chip microcomputer, electric power detection and electric energy metrical that branch road is allotted on single-phase 24 roads or three-phase 8 road can be completed, when detection branch is more than single-phase 24 roads or three-phase 8 tunnel, can arbitrary extension.During concrete enforcement, the electrical principle of the 4th single-chip microcomputer and the 4th RS485 communication interface, see CPU and the RS485 communication interface that Figure 11 a-Figure 11 h shows; The electrical principle of electrical parameter measuring module, see Figure 12 a-Figure 12 j; The electrical principle of metering module, see Figure 13 a-Figure 13 b.
Above-mentioned communication bus, comprises RS485 bus and/or RS422 bus and/or RS232 bus and/or industry ethernet; First to fourth communication interface, comprises RS485 communication interface and/or RS422 communication interface and/or RS232 communication interface and/or ethernet interface.
The base station intelligent AC distribution lightning protection of above-described embodiment and branch road energy-consumption monitoring system, it is a kind of supervisory control system for communication base station alternating-current system and thunder resisting equipment, and the energy consumption possessing alternating current equipment detects, it is one of most important front-end collection equipment of base station power & environment supervision.This base station intelligent AC distribution lightning protection and branch road energy-consumption monitoring system are the supervisory control systems aiming at the exploitation of intelligent base station AC distribution lightning protection integration case; The utilization of this base station intelligent AC distribution lightning protection and branch road energy-consumption monitoring system, power & environment supervision system for base station has supplied AC distribution equipment running status and data, the running status of thunder resisting equipment, the electricity consumption situation of AC load equipment and civil power and hydro power generation situation, facilitate user to fully understand and grasp base station AC power and load equipment ruuning situation, facilitate operator to the management evaluation of generating business, and for base station energy consumption management, energy-saving and emission-reduction provide and analyze data reliably comprehensively.
The base station intelligent AC distribution lightning protection of above-described embodiment and branch road energy-consumption monitoring system, be a kind of integrate the measurement of alternate current quantity, electric energy quality monitoring, electric energy classification metering, generating service management, lightning protection monitoring the AC distribution lightning protection monitoring of intelligent base station, metering system; This base station intelligent AC distribution lightning protection and branch road energy-consumption monitoring system, can not only carry out Real-Time Monitoring to the voltage, total current, power factor, frequency, power, lightning-protection module etc. of base station AC distribution lightning protection integrated box more exactly; And possess generating dutation and hydro power generation electric energy measures, conveniently generate electricity service management; Meanwhile, the energy consumption having possessed AC load equipment detects, and namely the electric current of the every branch road of distribution box, power, power factor, electric energy detect in real time.This level of integrated system is high, stable performance, multiple functional, precision is high, cost is low.
Compared with prior art, the base station intelligent AC distribution lightning protection of above-described embodiment and branch road energy-consumption monitoring system, have following characteristics:
(1) voltage, total current, total active power, total reactive power, power factor, frequency, total active energy, total reactive energy of Real-Time Monitoring base station AC distribution equipment; Mains-supplied active energy, reactive energy; Hydro power generation active energy, reactive energy; The hydro power generation time; Often allot the electric current of branch road, power factor, active power, reactive power, active energy, reactive energy; Often allot branch switch state; Current power supply (civil power or oil machine) state; Current lightning-protection module state etc.Multiple functional, Contents for Monitoring is comprehensive;
(2) pass through hydro power generation active energy, reactive energy; The hydro power generation time, facilitate the examination of hydro power generation business, management;
(3) to not allotting the electric current of branch road, power factor, active power, reactive power, active energy, reactive energy monitor, for managing power consumption, energy-saving and emission-reduction provide reliable data foundation;
(4) total metering module with allot branch road metering module and adopt all separately special electric quantity metering chip, do not affect certainty of measurement mutually; Can reach 0.2 grade by digital calibration electrical measurement precision, meritorious precision can reach 0.5S, and idle precision can reach 1 grade;
(5) branch road electric power detection unit is each can detect at most the single-phase or 8 road three-phases in 24 tunnels, exceeds the single-phase or 8 tunnel three phase time easily extensible in 24 tunnels, and being less than single-phase or 8 tunnel three phase times in 24 tunnels can reduce metering module, avoids the wasting of resources;
(6) on off state of branch road is often allotted in monitoring, and has the tripping alarm function of important branch road;
(7) electric current, voltage transfinite, civil power power-off, phase shortage, and branch switch trips, and the faults such as lightning protection inefficacy have sound and light of alarm, and provide two groups of alarms to export dry contact;
(9) RS485, RS422, RS232, Ethernet four kinds of communication interfaces are provided, namely realize centralized monitor, management by access base station power & environment supervision system, also can realize centralized monitor, management by Ethernet interface.
In sum, the base station intelligent AC distribution lightning protection of various embodiments of the present invention and branch road energy-consumption monitoring system, employing single-chip microcomputer is that the device of core completes various functions, reduces system cost, adds the reliability of system.Electric quantity metering have employed special electric quantity metering chip, ensure that high accuracy by digital calibration.There is the function of measuring of hydro power generation active energy, reactive energy, generating dutation; Facilitate the examination of the hydro power generation business of user, management, Real-Time Monitoring is carried out to the electric current of each AC load equipment, power factor, active power, reactive power, active energy, reactive energy, managing power consumption is carried out to base station, energy-saving and emission-reduction provide reliable data foundation; Comprehensive power distribution monitoring modular is equipped with 16 road branch switch status monitorings, can meet most of user's request; When on off state monitoring circuitry number is inadequate, available 16 road branch switch status monitoring expansion modules are expanded; Master control display unit provides two group relay alarm output interfaces, and provides RS485, RS422, RS232 and ethernet interface, ensure that uploading in time of warning message and data.
Visible, the base station intelligent AC distribution lightning protection of above-described embodiment and branch road energy-consumption monitoring system, advanced technology is adopted to carry out measuring in real time and monitoring to multinomial electrical quantity, Real-Time Monitoring can be carried out to many kinds of parameters such as voltage, electric current, power factor, active energy, reactive energies, to ensureing that the operation of distribution system normal table serves key effect, reduce system maintenance cost, improve whole work efficiency, while realizing multinomial monitoring, guarantee the reliability of system.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a base station intelligent AC distribution lightning protection and branch road energy-consumption monitoring system, it is characterized in that, comprise master control display unit, and parallel to arrange and the full electrical measurement unit of AC distribution comprehensive monitoring unit, branch switch conditional extensions unit and multichannel be connected with described master control display unit respectively by communication bus;
Described AC distribution comprehensive monitoring unit, comprise second singlechip, the comprehensive monitoring module be connected with described second singlechip respectively, total metering module, 16 branch switch state monitoring module and the second communication interface be connected with communication bus, and with the electrical parameter measuring module of described total metering model calling;
Described branch switch conditional extensions unit, comprises the 3rd single-chip microcomputer, and the 16 membership monitoring modulars be connected with described 3rd single-chip microcomputer respectively and the third communication interface be connected with communication bus;
Described master control display unit, comprises the first single-chip microcomputer, and the human-computer interaction module be connected with described first single-chip microcomputer respectively, alarm output module, communication module and the first communication interface of being connected with communication bus;
Described comprehensive monitoring module, comprising walks abreast arranges and the lightning protection state monitoring modular, mains-supplied monitoring modular and the oil machine that are connected with described second singlechip are respectively powered monitoring modular;
The full electrical measurement unit of described multichannel, comprises the 4th single-chip microcomputer, and the multiple measurement branch road be connected with described 4th single-chip microcomputer respectively and the 4th communication interface be connected with communication bus.
2. base station according to claim 1 intelligent AC distribution lightning protection and branch road energy-consumption monitoring system, is characterized in that, described human-computer interaction module, mainly comprises the LCDs and man-machine instruction button that are connected with the first single-chip microcomputer respectively.
3. base station according to claim 2 intelligent AC distribution lightning protection and branch road energy-consumption monitoring system, is characterized in that, described LCDs, comprises the man-machine LCD that model is LCM19264.
4. base station according to claim 1 intelligent AC distribution lightning protection and branch road energy-consumption monitoring system, it is characterized in that, described multiple measurement branch road is parallel to be arranged, and each measurement branch road comprises the electrical parameter measuring module and metering module that are connected to the 4th single-chip microcomputer successively.
5. the base station intelligent AC distribution lightning protection according to any one of claim 1-4 and branch road energy-consumption monitoring system, is characterized in that, described communication bus, comprises RS485 bus and/or RS422 bus and/or RS232 bus and/or industry ethernet;
First to fourth communication interface described, comprises RS485 communication interface and/or RS422 communication interface and/or RS232 communication interface and/or ethernet interface.
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| CN103944181A (en) * | 2013-12-18 | 2014-07-23 | 泰豪科技股份有限公司 | Power generation and distribution intelligent monitoring system |
| CN106093657B (en) * | 2016-07-19 | 2019-04-23 | 兰州海红技术股份有限公司 | Condition monitoring system for high-voltage direct current |
| CN108520624B (en) * | 2018-05-08 | 2020-01-10 | 国网安徽省电力有限公司 | Low-voltage intelligent acquisition complete device and low-voltage acquisition double-channel acquisition method |
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| JP4561720B2 (en) * | 2006-10-02 | 2010-10-13 | パナソニック電工株式会社 | Power monitoring system |
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