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A common terminal and method for in-situ acquisition and control with port sampling rate independently configurable

A common terminal and sampling rate technology, applied in the direction of program control, computer control, general control system, etc., can solve problems such as resampling of protection devices, incorrect actions, and abnormalities of merging units, so as to improve operational reliability and simplify Engineering design, the effect of simplifying software design

Active Publication Date: 2019-05-31
NARI TECH CO LTD +1
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  • Abstract
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  • Claims
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Problems solved by technology

The problem of this sampling synchronization mechanism is: 1) the protection device must re-sample, which increases the processing capacity requirements of the device; 2) when the GPS / BDS time synchronization is lost or unstable, the sampling time of the merging unit is easily affected and the Anomalies may affect the performance of the protection and control devices, and even cause the protection and control equipment to exit or operate incorrectly, thereby threatening the safe operation of the power system

Method used

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  • A common terminal and method for in-situ acquisition and control with port sampling rate independently configurable
  • A common terminal and method for in-situ acquisition and control with port sampling rate independently configurable
  • A common terminal and method for in-situ acquisition and control with port sampling rate independently configurable

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Embodiment Construction

[0054] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0055] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0056] An in-situ acquisition and control public terminal whose port sampling rate can be independently configured includes an ADC sampling module, a microprocessor chip, an FPGA chip and a control signal output port; the data transmission end of the ADC sampling module and the microprocessor chip Be respectively connected with the data transmission end of FPGA chip; Described microprocessor chip is also connected with control signal output port; The input port of described ADC samplin...

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Abstract

The invention discloses an in-place acquisition and control public terminal with the port sampling rate being independently configured and a method. Mutually independent decoupling sampled values are provided for different types of protection control devices, each set of sampling circuits perform synchronous sampling according to a respectively independent sampling rate, and each set of sampled values are sent and shared through a corresponding network port. Sampling interruption and synchronization among different acquisition and control public terminals are realized through integral second equal interval equalization control and time-keeping based on homologous synchronization messages, dependency for an external block does not exist, and the sampling is ensured to be stable and reliable.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and relates to an on-site installation of electric secondary equipment, in particular to an on-site collection and control public terminal and method with independently configurable port sampling rates. Background technique [0002] With the continuous development of the application of computer and microelectronics technology in the power industry, and the improvement of the manufacturing level of power secondary equipment, the power secondary equipment of substations has gradually developed from the centralized installation in the control room to the local installation of outdoor primary equipment. . The power secondary equipment installed on site includes relay protection, measurement and control, merging unit and intelligent terminal. These devices use optical fiber ring network for communication. The status information of the primary and secondary equipment of the substation is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 郑玉平周华良吴通华吴海姜雷胡国戴魏
Owner NARI TECH CO LTD
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