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Interactive sampling value transmission system and sampling value transmission method thereof

A transmission system and sampling value technology, applied in the direction of information technology support systems, electrical components, circuit devices, etc., can solve the problems of difficulty in guaranteeing delay, low synchronization accuracy, unfavorable data sharing, etc., to improve accuracy and reduce calculation load effect

Active Publication Date: 2011-07-20
NARI TECH CO LTD +1
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Problems solved by technology

However, this method requires the sampling value receiving circuit to have the function of hardware time stamping, and the synchronization accuracy is not high, currently only 10us, if there are switches and other devices in the sampling value transmission path, the delay will be difficult to guarantee, so it is not conducive to data sharing

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  • Interactive sampling value transmission system and sampling value transmission method thereof
  • Interactive sampling value transmission system and sampling value transmission method thereof
  • Interactive sampling value transmission system and sampling value transmission method thereof

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] 1. Basic principles

[0028] Sampled value transmission mechanisms such as figure 1 as shown, figure 1 A schematic diagram of communication between a bay layer IED and a merging unit is shown. During actual operation, one bay layer IED can receive sampled value data from multiple merging units, and one merging unit can also output sampled values ​​to multiple bay layer IEDs through different sampled value control blocks.

[0029] As a sampling value server, the merging unit of the process layer generally has one or more sampling value control blocks (SMVCB), and different intelligent IEDs of the interval layer serve as clients of sampling value services, which can be performed by configuring different sampling value control blocks of the merging unit. Associated to receive its sampled value.

[0030] Each bay layer IED implements the IEC61588 master clock ...

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Abstract

The invention discloses an interactive sampling value transmission system and a sampling value transmission method thereof. The interactive sampling value transmission system comprises IEDs (Intelligent Electronic Device) of spacing layers and merging units of process layers, and is characterized in that each merging unit is provided with one or a plurality of sampling value control blocks and defines a salve clock for each sampling value control block respectively, all the slave clocks are unrelated with each other, and each slave clock is communicated with each main clocks of the IED of each spacing layer; the IED of each spacing layer defines a GOOSE control block which internally comprises information related to sampling execution, sampling start time, number of sampling points and sampling interval; the GOOSE control blocks can transmit information to the merging units through GOOSE messages, after receiving sampling value control information of the corresponding IEDs, the merging units control sampling for electronics mutual inductors at a moment as required to obtain sampling values; and different IEDs of the spacing layers are associated with the different sampling value control blocks of the merging units for receiving the sampling values of the different sampling value control blocks. As signal lines between the process layers and the spacing layers are additionally arranged in the interactive sampling value transmission system, the applications, such as protection, monitoring and the like, to a transformer substation do not depend on external time setting, and the synchronous precision of sampling can reach a hundred-nanosecond grade.

Description

technical field [0001] The invention relates to an interactive sampling value transmission system based on IEC61588 and GOOSE and a sampling value transmission method thereof, belonging to the technical field of power system automation. Background technique [0002] With the promotion of the IEC61850 standard and the application of electronic transformers, intelligent electronic devices based on sampling values ​​have been gradually applied to various digital substations or smart substations. The electronic transformer in the process layer of the substation outputs digital signals reflecting current and voltage to the merging unit (MU), and the merging unit sends the sampling value data of the AC electrical quantity at a fixed sampling interval to the intelligent electronic device (IED) located in the bay layer. The digital communication mode of sampling values ​​is beneficial to information sharing, and the information capacity of the entire substation has been greatly impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02E60/723Y04S10/16Y02E60/00
Inventor 仇新宏周斌沈健黄国方赵安国
Owner NARI TECH CO LTD
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