WO2019097531A1 - Tableau de distribution d'appareillage de commutation activé par iot - Google Patents

Tableau de distribution d'appareillage de commutation activé par iot Download PDF

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Publication number
WO2019097531A1
WO2019097531A1 PCT/IN2018/000003 IN2018000003W WO2019097531A1 WO 2019097531 A1 WO2019097531 A1 WO 2019097531A1 IN 2018000003 W IN2018000003 W IN 2018000003W WO 2019097531 A1 WO2019097531 A1 WO 2019097531A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
sub
distribution board
circuit
lot
Prior art date
Application number
PCT/IN2018/000003
Other languages
English (en)
Inventor
Manoj Abdul MAJEED
Sudheer Purushothaman Nair
Vinod Krishnamoni
Original Assignee
Majeed Manoj Abdul
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 Majeed Manoj Abdul filed Critical Majeed Manoj Abdul
Publication of WO2019097531A1 publication Critical patent/WO2019097531A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect

Definitions

  • the present invention in general, relates to loT enabled devices to measure power consumption.
  • the invention relates to an loT device configured to perform per-line measurement of power consumption in electrical sub circuits.
  • the present invention relates to an loT enabled switchgear distribution board configured to measure power consumption per subsidiary circuit by non-invasive means wherein the measured data is transmitted to internet cloud server for further processing.
  • US Pat No. 6487509 details a method for energy management in a domestic environment. It teaches a system wherein the power consumption of each appliance may be adjusted in accordance with the information that it receives and the way it is preprogrammed. It does not talk about a means to measure power consumption in a sub-circuit using non-invasive means.
  • WO2015107538 A2 details a system and method for digital energy metering and appliance control. But technical failure of one or more components of foe gateway device would affect its communication link with foe cloud, therein affecting foe data integrity. Also, said system is rather complex and expensive to maintain.
  • My invention proposes an loT enabled switchgear distribution board configured to dynamically measure power consumption per sub circuit in an electrical system. Said system uses non-invasive means to measure foe current and voltage in each sub-drcuit, wherein the measured data is transmitted to internet cloud server for further processing and analysis.
  • the invention proposes an loT enabled switchgear distribution board configured to perform per-line measurement of power consumption in electrical sub-circuits, said board comprising of: • non-invasive current transformer (CT) adapted to be attached to the output of circuit breaker in each sub-circuit;
  • CT non-invasive current transformer
  • processing unit comprising of at least one processor, configured to compute power consumed under each circuit breaker in a pre-set time interval, perform loT device management, and establish secure communication over WiFi, Wired LAN, Powertine Communication and/or GSM/GPRS/3G/4G radio networks;
  • FIG.1 illustrates the schematic diagram of the system comprising of the loT enabled switchgear distribution board.
  • FIG.2 shows the loT enabled switchgear distribution board.
  • FIG.3 depicts the PU graph.
  • FIG.4 illustrates the interface showing usage comparison across different sub-circuits in an electrical Installation.
  • each switchgear indicates a collection of multiple circuit breakers, each protecting a sub-circuit of an electrical installation.
  • an induction current sensor or a Hall Effect sensor is attached to each of the sub circuit lines in order to measure the current consumption.
  • a voltage sensor reads the voltage values.
  • the measured quantities are then passed over wire into an analog-to-digital converter located on a data communications enabled device with some data processing capability, wherein it produces a digital measurement of the per-line consumption.
  • the measurements per line are then transmitted to an internet cloud server that stores foe consumption data.
  • This data can be further analysed for monitoring, operations and maintenance purposes
  • a novel aspect of the invention is that granular electrical consumption data is made available unlike conventional switchgears, which provide no data at all on electricity consumption. This consumption data helps end consumers to understand their electricity consumption patterns and take specific actions to control consumption as well as preventive maintenance and replacement of circuitry and gadgets within their homes, commercial and industrial establishments.
  • a part of the preferred embodiment of the present invention teaches an in-switchboard installed loT device, wherein the current and voltage sensors and internet enabled processing device are pre-integrated into the switch gear distribution board or provided as an add-on plugin board to foe switch gear distribution panel. It could be installed at the time of constructing a building or retrofitted to the electrical circuit of an existing building.
  • the current is measured using non-invasive AC current transformer attached to the power lines exiting from the circuit breakers, as shown in FIG.2. Voltage is measured using voltage sensors.
  • the present invention uses SCT-013-000 Non-invasive AC current sensor transformer even though other similar CTs may be used and is included within the scope of the invention.
  • the advantage of non-invasive current sensors is that it can be installed at any point in the circuit where power need to be measured.
  • Said CT is configured to sense a maximum of 100 A RMS and produces a corresponding output voltage of up to 50mv RMS.
  • the output of CT and voltage sensors is fed to an Analog to Digital Converter (ADC), wherein it is suitably sampled to compute the RMS value of current and voltage sensed, and subsequently the power consumed is calculated. The power consumption is computed in five second intervals.
  • ADC Analog to Digital Converter
  • ATmega328P is used as ADC, even though other ADC may be used and is included within the scope of the invention.
  • the steps involved in calculating the power is described herein: the voltage and current values from sensors are read through ADC pins as voltage variation, whereupon the samples are read from zero crossing after detecting the trough/peak of foe V/l wave form. DC offset is extracted by applying low pass filter, and subtract central signal on zero. The square values of voltage and current are summed and phase calibration is performed. Instantaneous power is computed as the product of phase shifted voltage and offset removed current value.
  • the system computes the number of times voltage crossed foe initial voltage for 20 iterations or maximum of 250ms, wherein the above-mentioned steps are performed for said number of iterations. Subsequently, Vrms and Irms are calculated, and the real power consumed is obtained.
  • the ADC output is connected to a Cortex A/M series ARM processor.
  • Said processing unit has abilities for loT device management, firmware update over the air, device authentication, ability to interact with Wi-Fi, wired LAN, GSM/GPRS radio networks as well as powerline communication.
  • the system has an internal clock to keep track of the time, wherein it is periodically synced with internet clock. The internal clock ensures that the time measurement is not affected even if a power failure occurs.
  • the measured power in each sub-circuit is sent to the cloud using WiFi, Wired LAN or powerline communication networks every 1 minute to ten minutes interval depending upon the amount of data collected and configuration setting for each device.
  • Said data is sent to a central database through a hub server on the internet, as illustrated in FIG.1.
  • the data could be sent using 4G/3G using GSM/GPRS radio networks.
  • the advantage of said system is that it is configured to measure the power consumption at defined levels of granularity.
  • the system is also capable of recognising the power consumed by select appliances based on the instantaneous current drawn at the time of switching on of said appliances, or by reading load signatures that are specific to a given load connected to the power supply.
  • User will be alerted on the website and/or mobile application when events such as spikes happen or when usage pattern significantly changes from past usage.
  • the system also helps users to identify power consumption in different parts of a building remotely. Using this data, energy consumers can make decisions which will help drive efficiency in energy consumption.
  • the power consumption in each sub-circuit in the switchgear distribution panel is plotted against time dynamically.
  • the power consumption is also statistically presented for user consumption.

Abstract

L'invention concerne un tableau de distribution d'appareillage de commutation activé par IoT pour une mesure par ligne de la consommation d'énergie dans des circuits électriques auxiliaires. Ledit système comprend des capteurs de courant et de tension pour mesurer le courant et la tension dans des sous-circuits, lesdites lectures étant échantillonnées de manière appropriée pour calculer la valeur efficace. L'énergie mesurée et les valeurs de courant/tension lues dans chaque sous-circuit sont envoyées au cloud dans chaque intervalle de 1 à 10 minutes, dans lequel elle est analysée de manière plus approfondie.
PCT/IN2018/000003 2017-11-20 2018-01-19 Tableau de distribution d'appareillage de commutation activé par iot WO2019097531A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201741041449 2017-11-20
IN201741041449 2017-11-20

Publications (1)

Publication Number Publication Date
WO2019097531A1 true WO2019097531A1 (fr) 2019-05-23

Family

ID=66538589

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2018/000003 WO2019097531A1 (fr) 2017-11-20 2018-01-19 Tableau de distribution d'appareillage de commutation activé par iot

Country Status (1)

Country Link
WO (1) WO2019097531A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150102803A1 (en) * 2012-04-25 2015-04-16 Schneider Electric It Corporation Current monitoring device
KR20170112738A (ko) * 2016-04-01 2017-10-12 (주)와이제이솔루션 IoT기반 통합관리형 수배전반 시스템

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150102803A1 (en) * 2012-04-25 2015-04-16 Schneider Electric It Corporation Current monitoring device
KR20170112738A (ko) * 2016-04-01 2017-10-12 (주)와이제이솔루션 IoT기반 통합관리형 수배전반 시스템

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