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In-situ protection sampled data self-adaptive synchronization method and in-situ protection sub-machines

A technology of sampling data and sampling synchronization, applied in electrical components, time-division multiplexing systems, multiplexing communications, etc., can solve the problems of inability to act quickly, inconsistent action time, and low security

Inactive Publication Date: 2019-03-15
XUJI GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an adaptive synchronization method for in-situ protection sampling data and in-situ protection sub-machines to solve the problem that each in-situ protection sub-machine cannot achieve data sampling synchronization, resulting in inconsistent action time and thus causing the protection to fail to act quickly , a less secure issue

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  • In-situ protection sampled data self-adaptive synchronization method and in-situ protection sub-machines

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Embodiment Construction

[0020] In-situ protection sub-machine embodiment

[0021] This embodiment provides an in-situ protection sub-machine. Generally speaking, the in-situ protection system, that is, the in-situ ring network is composed of multiple in-situ protection sub-machines with the same function, and the in-situ protection sub-machines here are the in-situ protection provided by this embodiment. handset. Since the functions of all in-situ protection sub-machines are the same, the structure and function of any in-situ protection sub-machine will be described below.

[0022] The in-situ protection sub-machine includes FPGA and CPU. These two devices have their own functions. Through mutual cooperation, the data sampling function of the in-situ protection sub-machine is realized.

[0023] First, the in-situ protection sub-machine needs to determine the data sampling method according to whether the external GPS second pulse signal is normal. In this embodiment, when the in-situ protection sub-...

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Abstract

The invention relates to an in-situ protection sampled data self-adaptive synchronization method and in-situ protection sub-machines. The method comprises the following steps: a GPS pulse per second (PPS) signal is firstly detected, and then whether the GPS PPS signal is normal is judged; when the GPS PPS signal is normal, each in-situ protection sub-machine performs sampling synchronization by adopting a synchronous sampling way, namely, each in-situ protection sub-machine begins data sampling when a set GPS PPS arrives; when the GPS PPS signal is abnormal, various in-situ protection sub-machines perform sampling synchronization by adopting an asynchronous sampling way, namely, various in-situ protection sub-machines firstly perform sampling according to corresponding set sampling frequency, and then perform sampling synchronization according to a data synchronization frame sent by a certain in-situ protection sub-machine after the sampling is finished. Therefore, the data sampling synchronization of various in-situ protection sub-machines can be realized through the method, and the sampling delay of the in-situ protection sub-machine is reduced, and the action time of the stationdomain protection is accelerated.

Description

technical field [0001] The invention relates to an adaptive synchronization method for in-situ protection sampling data and an in-situ protection sub-machine, and belongs to the technical field of in-situ protection data sampling synchronization. Background technique [0002] In-situ protection technology is a new technology in the field of power system relay protection. It adopts no protection design and integrates protection functions, merging units and intelligent terminal functions. The in-situ busbar protection adopts the distributed non-master mode, and the busbar protection is composed of multiple in-situ protection sub-machines with the same function. When a short-circuit fault occurs in the system, the data sampling time of each in-situ protection sub-machine is inconsistent, and data sampling synchronization cannot be achieved, which leads to inconsistent action time, which affects the fault information management of the dispatching system, and more importantly, is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0635
Inventor 李旭李文正方正汤洋黄继东倪传坤李宝伟邓茂军何涛田纪军
Owner XUJI GRP