Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
  • H02H1/00—Details of emergency protective circuit arrangements
  • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
  • H02H1/0069—Details of emergency protective circuit arrangements concerning transmission of signals by means of light or heat rays

Definitions

• the invention relates to a digital protection for an electrical network, intended to control the opening of circuit breakers in the event of faults detected by current and / or voltage sensors on lines of the network connected to the circuit breakers, and comprising a transmission link. data with a remote device.
• Such protection is more particularly used in high voltage electrical substations. It generally includes a processor which receives current and / or voltage values measured by the sensors mounted on the lines to be monitored from the network, compares these measured current and / or voltage values with corresponding reference values and in the case where the current and / or voltage values measured cross the corresponding setpoint values, the processor commands the opening of one or more circuit breakers to cut the faulty line (s) from the electrical network.
• a processor which receives current and / or voltage values measured by the sensors mounted on the lines to be monitored from the network, compares these measured current and / or voltage values with corresponding reference values and in the case where the current and / or voltage values measured cross the corresponding setpoint values, the processor commands the opening of one or more circuit breakers to cut the faulty line (s) from the electrical network.
• a portable computer which is connected to the protection by a wired type data transmission link.
• the laptop computer not only makes it easy to enter these setpoints on the keyboard, but also to extend the possibilities for an operator to modify and edit them on the screen.
• the laptop due to the fact that the laptop is connected by a wired type data transmission link to the protection system, it can be subject to disturbances and malfunctions due to the severe electromagnetic environment prevailing in the electrical substation around of protection.
• a laptop is a relatively fragile device, bulky and which is not well suited to the conditions of use in a high voltage substation. The object of the invention is to remedy these drawbacks.
• the subject of the invention is digital protection for the electrical network, intended to control the opening of circuit breakers in the event of faults detected by current and / or voltage sensors on lines of the network connected to the circuit breakers, and comprising a data transmission link with a remote device, characterized in that said link is an infrared link using the WAP application protocol allowing wireless and remote communication between the remote device and an infrared communication port of the protection.
• the remote device is a portable telephone and in particular a so-called second generation portable telephone which is provided with an infrared communication port and which can be configured to communicate by this infrared port according to the WAP wireless application protocol.
• This type of telephone currently available on the market, has a good-sized screen with keys and Internet browsing software. It is therefore understandable that a protection in which is loaded an input / modification / editing program compatible with Internet browsing software, can be configured very easily and inexpensively using a small and inexpensive mobile phone. expensive.
• the infrared data transmission link provides very safe galvanic isolation between the protection and the mobile phone.
• the digital protection for an electrical network comprises a box 1 in which is housed electronics and in particular a processor 2.
• This processor is connected in a known manner to a man / machine interface (not shown) of the type screen / keyboard mounted on the front panel 3 of the cabinet.
• the protection also includes current sensors 4,5,6 and / or voltage sensors 7,8,9 mounted on the lines to be monitored from the network, here the three lines 10,11, 12, and circuit breakers 13,14 , 15 which are used to cut the lines when they are faulty.
• the current sensors and / or the voltage sensors are connected to the cabinet 1 to supply measured values of current and / or voltage to the processor 2 and the circuit breakers are connected to the cabinet 1 to receive control signals from the processor 2. opening.
• Processor 2 is programmed to compare the measured values with setpoints stored in memory in box 1 and to supply the opening control signals to the circuit breakers when it detects that the measured values exceed the setpoints.
• an infrared communication port 16 is provided in the front face of the box 1 and is connected to the processor 2.
• the processor 1 is programmed to execute an interactive program for entering / modifying / editing the set values in the box 1 by communicating through the infrared communication port 16 according to the WAP wireless application Internet protocol.
• the interactive entry / modification / editing program is therefore designed as a compatible Internet server for Internet browsing.
• Communication with the input / modification / editing program is done remotely and wirelessly via a portable cellular telephone 17 which is also provided with an infrared communication port 18 and which communicates through its communication port infrared according to the WAP wireless Internet application protocol.
• This telephone 17 is more particularly a so-called second generation portable cellular telephone available on the market and provided with a screen 19, an alphanumeric keyboard 20 and one or more Internet navigation keys 21.
• Such a telephone has functionalities equivalent to a laptop computer for entering / changing / editing setpoints or other protection data.

Landscapes

• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Remote Monitoring And Control Of Power-Distribution Networks (AREA)
• Emergency Protection Circuit Devices (AREA)
• Selective Calling Equipment (AREA)
• Mobile Radio Communication Systems (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=8853460

Family Applications (1)

Country Status (6)

Families Citing this family (14)

Family Cites Families (12)

• 2000
  • 2000-08-10 FR FR0010519A patent/FR2812981B1/fr not_active Expired - Fee Related
• 2001
  • 2001-02-02 US US09/773,565 patent/US6704568B2/en not_active Expired - Lifetime
  • 2001-08-08 AU AU2001285984A patent/AU2001285984A1/en not_active Abandoned
  • 2001-08-08 EP EP01965317A patent/EP1310029A1/de not_active Ceased
  • 2001-08-08 JP JP2002518596A patent/JP2004506400A/ja not_active Withdrawn
  • 2001-08-08 WO PCT/FR2001/002576 patent/WO2002013349A1/fr active Application Filing

Non-Patent Citations (1)

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