CN112366829A - Low-voltage load monitoring terminal - Google Patents

Low-voltage load monitoring terminal Download PDF

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Publication number
CN112366829A
CN112366829A CN202011374461.7A CN202011374461A CN112366829A CN 112366829 A CN112366829 A CN 112366829A CN 202011374461 A CN202011374461 A CN 202011374461A CN 112366829 A CN112366829 A CN 112366829A
Authority
CN
China
Prior art keywords
module
electric energy
terminal
load monitoring
monitoring terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011374461.7A
Other languages
Chinese (zh)
Inventor
张静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongyuan Technology Guangdong Co ltd
Original Assignee
Zhongyuan Technology Guangdong Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongyuan Technology Guangdong Co ltd filed Critical Zhongyuan Technology Guangdong Co ltd
Priority to CN202011374461.7A priority Critical patent/CN112366829A/en
Publication of CN112366829A publication Critical patent/CN112366829A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02J13/00012—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 an auxiliary transmission line
    • 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
    • H02J13/00022—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 wireless data transmission
    • 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
    • H02J2213/00—Indexing scheme relating to details of circuit arrangements for providing remote indication of network conditions of for circuit arrangements for providing remote control of switching means in a power distribution network
    • H02J2213/10—Indexing scheme relating to details of circuit arrangements for providing remote indication of network conditions of for circuit arrangements for providing remote control of switching means in a power distribution network using simultaneously two or more different transmission means
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • 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
    • Y04S40/126—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 wireless data transmission

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a low-voltage load monitoring terminal, which comprises a control host, an access terminal and an output terminal, wherein the access terminal and the output terminal are both arranged on the control host; this low pressure load monitor terminal mainly used measures the three-phase active electric energy of low pressure network, has RS485 communication and wireless communication function, and convenience of customers carries out power consumption monitoring, collection and copies and manage, can install in the block terminal in a flexible way, realizes the subentry electric energy measurement to different regions and different loads, statistics and analysis.

Description

Low-voltage load monitoring terminal
Technical Field
The invention relates to a monitoring instrument, in particular to a low-voltage load monitoring terminal.
Background
In the existing circuit line, only the electric energy meter is used for counting the electric energy data of the user for the electric energy statistics of the user, and more metering instruments are required to be installed if other electric parameters need to be counted.
Disclosure of Invention
The invention aims to provide a low-voltage load monitoring terminal convenient for counting electric energy parameters.
In order to achieve the above purpose, the following scheme is provided: the utility model provides a low pressure load monitoring terminal, includes main control system, access terminal and output terminal all install on main control system, main control system includes controller and the measuring module, metering module, timesharing module, demand module, historical electric energy statistics module, switching value input/output module and the wireless communication module of being connected with the controller.
Further, the measurement data of the measurement module comprises voltage U, current I, active power P, reactive power Q, apparent power S, power factor PF, phase angle phi of voltage and current, voltage unbalance, current unbalance, frequency F, 31-order subharmonic, odd-even total harmonic content and total harmonic content.
Further, the metering parameters of the metering module include active electric energy, forward active electric energy, reverse active electric energy, inductive reactive electric energy, capacitive reactive electric energy and apparent electric energy.
Further, the time sharing module is provided with two sets of time period tables, and each set of time period table comprises 12 daily time periods and 4 rates.
Further, the demand module measures 8 demands, specifically including demands of three-phase current, forward active power, reverse active power, inductive reactive power, capacitive reactive power, apparent power and time of demand occurrence.
Further, the historical electric energy statistical module stores and counts historical electric energy data of past 12 months.
Further, the switching value input and output module comprises 2 paths of switching value outputs and 4 paths of switching value inputs.
Further, the wireless communication module comprises a LORA communication module, a 2G communication module and an NB communication module.
Furthermore, a display screen and a plurality of operation buttons which are electrically connected with the controller are arranged on the control host.
The invention has the advantages that: this low pressure load monitor terminal mainly used measures the three-phase active electric energy of low pressure network, has RS485 communication and wireless communication function, and convenience of customers carries out power consumption monitoring, collection and copies and manage, can install in the block terminal in a flexible way, realizes the subentry electric energy measurement to different regions and different loads, statistics and analysis.
Detailed Description
The following is further detailed by the specific embodiments:
the utility model provides a low pressure load monitoring terminal, includes main control system, access terminal and output terminal all install on main control system, main control system includes controller and the measuring module, metering module, timesharing module, demand module, historical electric energy statistics module, switching value input/output module and the wireless communication module of being connected with the controller.
The measurement data of the measurement module comprises voltage U, current I, active power P, reactive power Q, apparent power S, power factor PF, phase angle phi of voltage and current, voltage unbalance, current unbalance, frequency F, 31-order subharmonic, odd-even total harmonic content and total harmonic content.
Wherein, voltage U keeps 1 decimal during measurement electric power data, and frequency F keeps 2 decimal, and 3 decimal are kept to electric current I, and 4 decimal are kept to power P, and 2 decimal are kept to phase angle phi, and 2 decimal are kept to unbalance degree delta.
Such as: u = 220.1V, f = 49.98HZ, I = 1.999A, P = 0.2199KW, Φ = 60.00 °, Δ = 0.00%. 4-way and residual current detection is also supported.
The metering parameters of the metering module comprise active electric energy, forward active electric energy, reverse active electric energy, inductive reactive electric energy, capacitive reactive electric energy and apparent electric energy.
The time-sharing module is provided with two sets of time period tables, and each set of time period table comprises 12 daily time periods and 4 rates.
Wherein, two sets of time tables can be divided into 4 time zones in a year, and each set of time table can be provided with 12 time of day and 4 rates (F1, F2, F3 and F4 are peak flat valleys). The basic idea of time-sharing charging is to use electric energy as a commodity, and use an economic lever to cut peaks and fill valleys so as to improve the quality of electricity utilization and improve the comprehensive economic benefit, wherein the electricity price is high in the peak period and low in the valley period.
The demand module measures 8 demands, specifically including demands of three-phase current, forward active power, reverse active power, inductive reactive power, capacitive reactive power and apparent power and the time of demand occurrence.
Wherein, the demand is the average power measured in the demand period.
The historical electric energy statistical module stores and counts historical electric energy data of past 12 months.
The historical electric energy counting module can count the historical electric energy of 12 months, including electric energy of 4 quadrants and each rate.
The switching value input and output module comprises 2 paths of switching value outputs and 4 paths of switching value inputs.
The switching value output is relay output, and remote control and alarm output can be realized. The switching value input can not only collect and display local switching information, but also realize remote transmission function, namely 'remote signaling' function through the RS485 of the instrument.
The wireless communication module comprises an LORA communication module, a 2G communication module and an NB communication module.
The wireless communication module is used for exchanging information with other equipment in various wireless communication modes.
And the control host is provided with a display screen and a plurality of operation buttons which are electrically connected with the controller.
The display screen is used for displaying data, and the operation buttons are used for switching the functions of the low-voltage load monitoring terminal and operating the low-voltage load monitoring terminal.
The low-voltage load monitoring terminal adopts an MODBUS-RTU protocol or a DL/T645 protocol. For the specific protocol format, please refer to the relevant protocol standard, which is not described herein again.
The switching value input of the monitoring terminal adopts a switching signal input mode, and a +12V working power supply is arranged in the instrument without external power supply. When the external is switched on or off, the on or off information is collected through the meter switch input module and is locally displayed through the meter. The switching value input can not only collect and display local switching information, but also realize remote transmission function, namely 'remote signaling' function through the RS485 of the instrument. The switching value output is relay output, and remote control and alarm output can be realized.
The monitoring terminal can adopt four wiring modes of three-phase four-wire connection through a current transformer, three-phase three-wire connection through a current transformer, three-phase four-wire connection through a voltage current transformer and three-phase three-wire connection through a current voltage transformer.
This low pressure load monitor terminal mainly used measures the three-phase active electric energy of low pressure network, has RS485 communication and wireless communication function, and convenience of customers carries out power consumption monitoring, collection and copies and manage, can install in the block terminal in a flexible way, realizes the subentry electric energy measurement to different regions and different loads, statistics and analysis.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics of the embodiments is not described herein in any greater extent than that known to persons of ordinary skill in the art at the filing date or before the priority date of the present invention, so that all of the prior art in this field can be known and can be applied with the ability of conventional experimental means before this date. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (9)

1. A low pressure load monitor terminal which characterized in that: the intelligent power supply system comprises a control host, an access terminal and an output terminal, wherein the access terminal and the output terminal are both installed on the control host, and the control host comprises a controller, a measuring module, a metering module, a time-sharing module, a demand module, a historical electric energy counting module, a switching value input and output module and a wireless communication module, wherein the measuring module, the metering module, the time-sharing module, the demand module, the historical electric energy counting module, the switching value input and output module.
2. The low voltage load monitoring terminal of claim 1, wherein: the measurement data of the measurement module comprises voltage U, current I, active power P, reactive power Q, apparent power S, power factor PF, phase angle phi of voltage and current, voltage unbalance, current unbalance, frequency F, 31-order subharmonic, odd-even total harmonic content and total harmonic content.
3. The low voltage load monitoring terminal of claim 1, wherein: the metering parameters of the metering module comprise active electric energy, forward active electric energy, reverse active electric energy, inductive reactive electric energy, capacitive reactive electric energy and apparent electric energy.
4. The low voltage load monitoring terminal of claim 1, wherein: the time-sharing module is provided with two sets of time period tables, and each set of time period table comprises 12 daily time periods and 4 rates.
5. The low voltage load monitoring terminal of claim 1, wherein: the demand module measures 8 demands, specifically including demands of three-phase current, forward active power, reverse active power, inductive reactive power, capacitive reactive power and apparent power and the time of demand occurrence.
6. The low voltage load monitoring terminal of claim 1, wherein: the historical electric energy statistical module stores and counts historical electric energy data of past 12 months.
7. The low voltage load monitoring terminal of claim 1, wherein: the switching value input and output module comprises 2 paths of switching value outputs and 4 paths of switching value inputs.
8. The low voltage load monitoring terminal of claim 1, wherein: the wireless communication module comprises an LORA communication module, a 2G communication module and an NB communication module.
9. The low voltage load monitoring terminal of claim 1, wherein: and the control host is provided with a display screen and a plurality of operation buttons which are electrically connected with the controller.
CN202011374461.7A 2020-11-30 2020-11-30 Low-voltage load monitoring terminal Pending CN112366829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011374461.7A CN112366829A (en) 2020-11-30 2020-11-30 Low-voltage load monitoring terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011374461.7A CN112366829A (en) 2020-11-30 2020-11-30 Low-voltage load monitoring terminal

Publications (1)

Publication Number Publication Date
CN112366829A true CN112366829A (en) 2021-02-12

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Application Number Title Priority Date Filing Date
CN202011374461.7A Pending CN112366829A (en) 2020-11-30 2020-11-30 Low-voltage load monitoring terminal

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080186201A1 (en) * 2007-02-01 2008-08-07 Shanghai Jiulong Electric Power (Group) Co., Ltd. Intelligent System for Collecting Readings From Electric Meters
CN102062811A (en) * 2009-11-18 2011-05-18 上海金陵智能电表有限公司 Single-phase static watt-hour meter with wireless meter reading module
CN204116502U (en) * 2014-10-21 2015-01-21 江苏德佐电子科技有限公司 A kind of Three phase electric power analysis instrument
CN106443168A (en) * 2016-09-27 2017-02-22 国网山东省电力公司济南供电公司 Remote acquisition meter reading data analysis system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080186201A1 (en) * 2007-02-01 2008-08-07 Shanghai Jiulong Electric Power (Group) Co., Ltd. Intelligent System for Collecting Readings From Electric Meters
CN102062811A (en) * 2009-11-18 2011-05-18 上海金陵智能电表有限公司 Single-phase static watt-hour meter with wireless meter reading module
CN204116502U (en) * 2014-10-21 2015-01-21 江苏德佐电子科技有限公司 A kind of Three phase electric power analysis instrument
CN106443168A (en) * 2016-09-27 2017-02-22 国网山东省电力公司济南供电公司 Remote acquisition meter reading data analysis system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
山西省电力公司: "电力企业线损工作标准", 中国电力出版社, pages: 153 *

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Application publication date: 20210212

RJ01 Rejection of invention patent application after publication