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Voltage interactive synchronous sampling method

A technology of synchronous sampling and voltage, applied in the direction of measuring current/voltage, electrical components, measuring electrical variables, etc., can solve problems such as clock synchronization, and achieve the effect of fewer nodes, low timing requirements, and simple system architecture

Active Publication Date: 2020-04-03
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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Problems solved by technology

[0009] The purpose of the present invention is to provide a voltage interactive synchronous sampling method, which solves the technical problem that the local modules in the HSR ring of the high-voltage side bus voltage and the local modules in the HSR rings of the middle and low voltage sides need clock synchronization

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Embodiment Construction

[0037] Such as Figure 1-Figure 2 A voltage interactive synchronous sampling method shown includes the following steps:

[0038] Step 1: The bus voltage on-site module of each section of the bus in the substation and each switch on-site module realize the bus voltage acquisition through the HSR ring network, and each bus voltage acquisition on-site module outputs a separate cascade network port, which is used to communicate with each interval voltage on-site The ground module realizes point-to-point communication;

[0039] The interval voltage local module can receive the switch information sent by the bus voltage local module through the cascading port, including the switch information of the bus tie switch, and can realize the voltage parallel function of the double bus through the switch information of the switch.

[0040] The interval voltage on-site module can also receive the on-site switching module in the local HSR ring network, including the switching value informati...

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Abstract

The invention discloses a voltage interactive synchronous sampling method, and belongs to the electric power technology field. The method comprises the following step of measuring the channel time delay between a bus voltage local module and an interval voltage local module and the internal sampling time delay of the bus voltage local module, solves the technical problem that the high-voltage sidebus voltage HSR in-loop local module and the spaced HSR in-loop local modules at the middle-voltage side and the low-voltage side need the clock synchronization, and is simple in system architecture,less in HSR in-loop nodes, high in communication efficiency and low in clock synchronization requirement. The synchronization does not depend on an external reference clock source, and the reliability is high.

Description

technical field [0001] The invention belongs to the technical field of substation measurement and control communication technology, and in particular relates to a voltage interactive synchronous sampling method. Background technique [0002] In the HSR ring network, since the local modules in each HSR ring network perform synchronous sampling based on their respective synchronous clocks, the analog and switching data sent by the bus voltage module to the local module of the bay voltage, and the voltage of each bay The internal sampling standards of the in-place module are inconsistent, the data between the two is not synchronized, and the data cannot be used directly. [0003] In order to ensure data synchronization, it can be implemented through the following existing technologies: [0004] Existing technology 1) Connect the bus voltage local module and each interval voltage local module to form an HSR ring network, and the HSR ring network realizes the clock synchronizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25H04J3/06
CPCG01R19/2509H04J3/0667H04J3/0682
Inventor 杨凌辉邹晓峰
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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