ELECTRONIC SMART METER ENABLING DEMAND RESPONSE AND METHOD FOR DEMAND RESPONSE

• US 20090198384A1
• Filed: 02/04/2009
• Published: 08/06/2009
• Est. Priority Date: 02/05/2008
• Status: Active Grant

• Current Assignee: LS Industrial Systems Company Limited
• Original Assignee: LS Industrial Systems Company Limited
• Inventors: AHN, Sang-Ho
• Granted Patent: US 8,234,017 B2
• Time in Patent Office: Days
• US Class Current: 700/292
• CPC Class Codes: G01D 2204/16 Displaying of utility pricing or cost
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 2310/10 The network having a local or delimited stationary reach
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 2310/64 The condition being economic, e.g. tariff based load management
• CPC Class Codes: H02J 2310/66 one of the loads acting as master and the other or others acting as slaves
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02A 30/60 Planning or developing urban green infrastructure
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/242 Home appliances
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading
• CPC Class Codes: Y04S 40/124 using wired telecommunication networks or data transmission busses
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

The electric smart meter enabling demand response and method for the demand response are disclosed capable of acquiring an option and response information from a subscriber for enabling an active demand control, and to this end, the electric smart meter is embedded therewithin at least one or more integrated monitoring modules and includes microprocessors for transmitting a power control command to a relevant integrated monitoring module in response to a power control program based on the rate system, and controllably transmitting the measured and monitored data stored in the memory to the master server side via the communication module as well.

Claims

1. An electric smart meter enabling demand response comprising:

a memory stored with a power rate system, a metered data, a monitored data and a power control program of a subscriber;

a integrated monitoring module for performing detection of various electric failures, automatic meter reading of metered data, detection of facilities status, and control of loads and electric home appliances;

a high-level communication module for transmitting the metered (measured) and monitored data obtained from an automatic meter reader (AMR) and the integrated monitoring module to a master server, or receiving a control command of the integrated monitoring module transmitted from the master server; and

a first microprocessor for transmitting a power control command to a relevant integrated monitoring module in response to the power control program based on the rate system, and controllably transmitting the metered and monitored data stored in the storage to the master server via a high-level communication module.

2. The meter of claim 1, further comprising:

a power detector for detecting a current and a voltage of an electric line; and

a second microprocessor for receiving an analogue current and a voltage signal from the power detector and converting the analogue current and the voltage signal to a digital signal and a numerical data for metering of the measured values and transmitting the converted signal and data to the first microprocessor.

3. The meter of claim 1, wherein the integrated monitoring module comprises a demand controller for reporting various loads, power detection and load control of home electric appliance, load set-up and demand power of each load to the electric smart meter.

4. The meter of claim 3, wherein the integrated monitoring module comprises:

the automatic meter reader (AMR) for receiving the metered data from various facilities meters;

a facilities controller for receiving status signals of various facilities of a building structure; and

an electric safety monitor receiving a signal of electric fault and a temperature measurement value.

5. The meter of claim 1, wherein the master server estimates and controls the rate system opted by a subscriber and power demands via power usage collected by the electric smart meter.

6. The meter of claim 1, further comprising power stabilization means for supplying a stabilized direct current (DC) power source to each system and integrated monitoring modules.

7. An electric smart meter enabling demand response comprising:

a memory stored with a power rate system, a metered data, a monitored data and a power control program of a subscriber;

an extension interface connected by at least one or more integrated monitoring modules, receiving metered data and monitored data from the integrated monitoring module or transmitting an operation control command to the integrated monitoring module;

a high-level communication module transmitting the metered data and monitored data obtained from the integrated monitoring module to a master server side, or receiving a control command of the integrated monitoring module transmitted from the master server;

an optical communication module receiving a particular power rate system opted by a wireless terminal using short-distance wireless communication with an external wireless terminal, or transmitting various data stored in the memory to the wireless terminal; and

a first microprocessor transmitting a power control command to a relevant integrated monitoring module connected to the extension interface in response to a power control program based on the power rate system and controllably transmitting the metered data and monitored data stored in the memory to the master server side via the high-level communication module.

8. The meter of claim 7, wherein the integrated monitoring module comprises a demand controller for reporting various loads, power detection and load control of home electric appliance, load set-up and demand power of each load to the electric smart meter.

9. The meter of claim 7, wherein the extension interface is an RS-485 interface, and wherein the electric smart meter is connected to integrated monitoring modules including an automatic meter reader receiving measured data from various facilities meters via the interface, a facilities monitor receiving a status signal of various facilities and a power safety monitor receiving an electric failure signal and measured temperature values.

10. A method for demand response using an electric smart meter comprising:

establishing, by an electric smart meter, a power rate system opted by a subscriber at a memory;

controlling an operation of a relevant load via a demand controller in response to a power control program of the power rate system opted by the subscriber;

determining whether a time for stopping the operation of the load has arrived in response to the power rate system; and

transmitting, by the electric smart meter, a power stoppage command of the relevant load to the demand controller.

11. The method of claim 10, wherein the electric smart meter receives the power rate system opted by the subscriber from the master server via the high-level communication module, or receives the power rate system from an external wireless terminal via an optical communication module.

12. The method of claim 10, wherein the electric smart meter collects a power monitoring data relative to various loads and home electric appliances and data relative to demand power of each load, and periodically transmits the data to the master server.