POWER INFORMATION TRANSMITTING AND RECEIVING SYSTEM IN SMART GRID

• US 20160182233A1
• Filed: 12/07/2015
• Published: 06/23/2016
• Est. Priority Date: 12/19/2014
• Status: Abandoned Application

• Current Assignee: Korea Internet & Security Agency
• Original Assignee: Korea Internet & Security Agency
• Inventors: GO, Woong, SUH, Jeong Jun, PARK, Hae Ryong
• Application Number:
  US14/960,708
• Publication Number:
  US 20160182233A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G05F 1/66 Regulating electric power
• CPC Class Codes: H04L 12/2816 Controlling appliance services of a home automation network by calling their functionalities arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station; in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q9/00
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 9/3242 involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
• 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: Y04S 20/20 End-user application control systems
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

A power information transmitting and receiving system in a smart grid comprises: a plurality of home appliances for creating power information by matching consumed power to home appliance identification information; a plurality of smart meters for receiving and storing the power information, creating a first hash value (H_SM) for verifying integrity of the stored power information, encrypting the power information using a symmetric key, matching the encrypted data to smart meter identification information; a plurality of data collecting units for decrypting the received data, verifies integrity of the data, collecting the data, creating an integrity verification value for each smart meter, encrypting the smart meter identification information, a total power consumption, a collection time and a third hash value (H_DCU), matching the encrypted data to data collecting unit identification information; and an AMI head-end for decrypting the data, performing integrity verification, collecting data for each data collecting unit.

Claims

1. A power information transmitting and receiving system in a smart grid, the system comprising:

a plurality of home appliances for creating power information by matching consumed power to home appliance identification information;

a plurality of smart meters for receiving and storing the power information transmitted from the plurality of home appliances, creating a first hash value (H_SM) for verifying integrity of the stored power information, encrypting the power information using a symmetric key, matching the encrypted data to smart meter identification information, and transmits the encrypted data;

a plurality of data collecting units for decrypting the received data using the symmetric key, verifies integrity of the data, collecting the data for each smart meter, creating an integrity verification value of the data collected for each smart meter, encrypting the smart meter identification information, a total power consumption, a collection time and a third hash value (H_DCU), matching the encrypted data to data collecting unit identification information, and transmits the encrypted data; and

an AMI head-end for decrypting the data received from the data collecting unit, performing integrity verification, collecting data for each data collecting unit, and creating and transmitting billing request information to each smart meter.

2. The system according to claim 1, wherein when the smart meter receives and stores the power information transmitted from the plurality of home appliances, the smart meter stores a collection time together.

3. The system according to claim 1, wherein the first hash value (H_SM) of the smart meter is created by concatenating the home appliance identification information, the consumed power, a collection time and the smart meter identification information.

4. The system according to claim 1, wherein when the smart meter encrypts the home appliance identification information, the consumed power, a collection time and the firth hash value (H_SM), the smart meter encrypts the information using a first symmetric key distributed between the data collecting unit and the smart meter in advance.

5. The system according to claim 1, wherein the data collecting unit decrypts the received data using a first symmetric key and creates the second hash value (H′

_SM) by concatenating the decrypted data and the smart meter identification information.

6. The system according to claim 1, wherein the data collecting unit compares the decrypted first hash value (H_SM) and a newly created second hash value (H′

_SM) and verifies integrity based on a result of the comparison.

7. The system according to claim 1, wherein the data collecting unit creates a third hash value (H_DCU) by concatenating the smart meter identification information, the total power consumption (TEU), the collection time and the data collecting unit identification information (DCU-ID).

8. The system according to claim 1, wherein the AMI head-end creates a fourth hash value (H′

_DCU) by concatenating the decrypted data, the data and the data collecting unit identification information.

9. The system according to claim 8, wherein the AMI head-end compares the decrypted third hash value (H_DCU) and the newly created fourth hash value (H′

_DCU) and verifies integrity based on a result of the comparison.

10. The system according to claim 1, wherein when the AMI head-end confirms individual data of each of the plurality of home appliances, the AMI head-end extracts the individual data from the data of the home appliances stored in the data collecting unit and confirms the individual data.