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Latency determination in substation networks

A waiting time and substation technology, applied in data exchange network, time division multiplexing system, digital transmission system, etc., can solve problems such as timing performance interference

Active Publication Date: 2015-05-27
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, timing performance under SNTP is disturbed by heavily loaded network

Method used

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  • Latency determination in substation networks
  • Latency determination in substation networks
  • Latency determination in substation networks

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Embodiment Construction

[0034] The inventive concepts will now be described more fully with reference to the accompanying drawings, in which illustrative embodiments are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully conveys the scope of the inventive concept to those skilled in the art. Like numbers designate like elements throughout.

[0035] figure 1 A part of the substation network 1 , which in turn may be part of the power network, is shown schematically. The substation network 1 includes a plurality of electronic devices 2 (hereinafter denoted by a first electronic device 2a and a second electronic device 2b ) and a plurality of relay devices 3 interconnecting the electronic devices 2a, 2b. The electronic devices 2a, 2b may be so-called Intelligent Electronic Devic...

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Abstract

The present disclosure relates to latency determination in a substation network. One aspect relates to a method being performed in a first electronic device of the substation network. Another aspect relates to a method being performed in a relay device of the substation network. Yet another aspect relates to a method being performed in a second electronic device of the substation network. Latency is determined using a precision time protocol, such as the IEEE 1588v2 protocol. However, no GPS based master clock timing is required. Instead at least one data value is included as payload in a message of the precision time protocol. The relay device adds a residence time duration and a link latency to the message. The message is then forwarded to the second electronic device. A corresponding first electronic device, relay device, and second electronic device as well as a computer program and computer program product are also provided.

Description

technical field [0001] The present disclosure relates generally to communication between substations, and in particular to latency determination in a network of substations. Background technique [0002] Substations are usually part of power generation, transmission and distribution systems. In general, a substation transforms voltage from high to low or vice versa, and / or performs any of several other functions associated with power generation, transmission, and distribution systems. Electricity can flow through several substations between the power plant and the consumer, and its voltage can be varied in several steps. [0003] Therefore, the substation has a function of supplying electric power to consumers, and includes a protection system that cuts off power supply to a location where a problem occurs immediately after a problem such as an electric leakage, a ground fault, or a device failure occurs. Such so-called line differential protection applications were until ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04L12/26
CPCH04L43/0852H04L43/106H04J3/0667Y04S40/00H04L43/18H04L43/50
Inventor L.特伊博姆
Owner HITACHI ENERGY SWITZERLAND AG