Intelligent substation sampled value network data switching method and device

A technology for smart substations and data exchange, applied in data exchange networks, circuit devices, power network operating system integration, etc., can solve the problems of power consumption and heat dissipation that plague the development of protection devices, affect the construction layout of substations, etc., to avoid delays Uncertainty, cost reduction effect

Active Publication Date: 2014-03-12
长园深瑞继保自动化有限公司
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Problems solved by technology

[0005] Since the protection device adopts a point-to-point data transmission method, the protection device needs to be equipped with a large number of optical fiber channels, and the power consumption and heat dissipation problems caused by it plague the development of the protection device.
In addition, a large number of optical cables on site also affected the construction layout in the substation

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  • Intelligent substation sampled value network data switching method and device
  • Intelligent substation sampled value network data switching method and device
  • Intelligent substation sampled value network data switching method and device

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] The smart substation sampling value network data exchange method of the present invention is applied to smart substations based on IEC61850 communication, such as figure 2 shown, including the following steps:

[0026] 1. After receiving the exchange information SV data (data) of the primary transformer collected by the bay level merging unit MU, the data exchange device first checks that the message type is an SV message, and verifies the 6-byte target at the beginning of the message. Whether the address is consistent with the address of the corresponding channel, and then extract the application identification (APPID) in the IEC61850 protocol contained in the message, whether it is consistent with the APPID of the corresponding channel preset in the data exchange device, and finally pass the cyclic redundancy check After the code CR...

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Abstract

The invention discloses an intelligent substation sampled value network data switching method and device and aims to solve the technical problems of reducing protector cost and avoiding delay uncertainty in network data packets. The method includes the steps: a bay level merging unit acquires alternating current information of a primary transformer; a data switching device forwards the formation in sequence by means of synchronous time division multiplexing. According to the device, a voltage merging unit and the bay level merging unit are connected with a protector through the data switching device; the data switching device is a field programmable gate array. Compared to the prior art, the intelligent substation sampled value network data switching method and device has the advantages that data frames of input channels are arranged in a certain sequence when forwarded, the passages have totally same time slice timeslots, fewer fiber-optic interfaces are used, field fiber arrangement is simplified, the protector cost is reduced, the problem of delay uncertainty in network data packets is avoided, and the method and device is applicable to situations with low network throughput and fixed data frame size.

Description

technical field [0001] The invention relates to a method and a device for data exchange of an intelligent substation, in particular to a method and a device for data transmission of a sampling value SV network. Background technique [0002] In industrial control, industrial Ethernet switches are being widely used. The current industrial Ethernet switches, like ordinary Ethernet switches, use Statistical Time Division Multiplexing (STDM). free time slot. That is, a time slot is allocated to a user only when there is data to be sent; when the user suspends sending data, no time slot is allocated to it. The free time slots of the circuit can be used for data transmission of other users. Statistical time division multiplexing is also called asynchronous time division multiplexing. Therefore, this kind of time division multiplexing is easy to cause delay uncertainty in data packet forwarding when dealing with sudden large-scale data transmission. And this delay uncertainty i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H04L12/70H04L1/00
CPCY02E60/723Y04S10/16Y02B70/30Y02E60/00Y04S20/20
Inventor 徐成斌
Owner 长园深瑞继保自动化有限公司
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