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Remote signaling acquisition method for distribution automation terminal

A power distribution automation and terminal technology, applied in electrical components, circuit devices, etc., can solve problems such as low stability and reliability, and achieve the effect of ensuring safety, preventing input contact jitter, and improving safety.

Pending Publication Date: 2020-02-14
珠海菲森电力科技有限公司
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  • Abstract
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Problems solved by technology

[0010] The existing methods are difficult to fully meet the above requirements, and the stability and reliability are low

Method used

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  • Remote signaling acquisition method for distribution automation terminal

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Embodiment Construction

[0053] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0054] see figure 1 , a method for remote signal acquisition of a power distribution automation terminal in an embodiment of the present invention, characterized in that it includes the following steps:

[0055] Step 1, setting the remote signaling action threshold;

[0056] Since the conduction threshold of the light-emitting tube of the optocoupler U1 is 1.2V, when the voltage across R4 is lower than 1.2V, the optocoupler U1 must not start, and the current flowing through the light-emitting tube of the optocoupler U1 is zero. At this time, according to Kirchhoff's current law: the current flowing through R4 is consistent with the current flowing through R1.

[0057] When the remote signaling voltage V satisfies the following conditions:

[0058] V1>(1.2V*(R1+R2+R3+R4+R5) / R2)

[0059] Only the light-emitting tube of the photocoupler...

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Abstract

The invention discloses a remote signaling acquisition method for a distribution automation terminal. The remote signaling acquisition method for the distribution automation terminal is characterizedby comprising steps of step 1, setting a remote signaling action threshold value; 2, determining a scheme for resisting interference of a fast transient pulse train; and 3, determining an anti-surge interference scheme. Compared with a conventional remote signaling acquisition scheme, the remote signaling acquisition method is advantaged in that the remote signaling action threshold value is reasonably set, a remote signaling input loop adopts photoelectric isolation, software and hardware filtering measures are taken, and input contact jittering or strong electromagnetic field interference maloperation is prevented, and the capability of resisting the interference of the fast transient pulse train is realized. The method is advantaged in that SMD elements can be completely used, the method is very suitable for automatic production, safety, stability, reliability, timeliness and accuracy of remote signaling quantity collection of the distribution automation terminal are greatly improved, and thereby the technical level in the field of distribution network automation is improved.

Description

technical field [0001] The invention relates to the field of distribution automation intelligent terminals, in particular to a method for remote signal collection of distribution automation terminals. Background technique [0002] With the continuous progress of modern scientific development and the continuous improvement of the automation level of power distribution network, the electromagnetic environment of distribution substation is becoming more and more complex. The failure and misjudgment of remote signal quantity collection will bring serious consequences to the safe production of power grid. Therefore, the State Grid has put forward higher requirements for the security and reliability of the distribution network. [0003] In "GBT 35732-2017 Distribution Automation Intelligent Terminal Technical Specifications" and "Q / GDW11815-2018 Distribution Automation Terminal Technical Specifications", the following requirements are put forward for the collection of remote signa...

Claims

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Application Information

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IPC IPC(8): H02J13/00
Inventor 刘鹏飞王刚欧杰邓良基王建军
Owner 珠海菲森电力科技有限公司
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