A power communication relay protection service delay control method, system and relay protection equipment

A technology of relay protection and control method, which is applied in the field of micro-grid, can solve the problems of not being able to meet the delay requirements of relay protection equipment, and achieve the effect of realizing physical isolation and reducing the risk of blocking and delay increase

Active Publication Date: 2021-12-14
INFORMATION & COMM BRANCH OF STATE GRID JIANGSU ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the power service data is very large and causes network congestion and link disconnection, the existing delay compensation method is not enough to meet the delay requirements of relay protection equipment

Method used

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  • A power communication relay protection service delay control method, system and relay protection equipment
  • A power communication relay protection service delay control method, system and relay protection equipment
  • A power communication relay protection service delay control method, system and relay protection equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] In the example of the present invention, a power communication service delay control method based on the integration of FlexE technology and ring network architecture is provided, and the relay protection device can know the relay status of the message on the other side according to the received message. The protection device starts to flow through the total path delay of all switch devices in the FlexE network slice. The relay protection device adjusts the sampling time based on the total path delay to ensure the simultaneous measurement of the two relay protection devices.

[0059] The specific implementation content is as follows, and the overall process is as follows: Image 6 As shown, the specific implementation flow chart is as follows image 3 Shown:

[0060] Step 1. The 1588 clock source uses the IEEE-1588 protocol to make the FlexE switch in the transmission ring network of the relay protection device and the relay protection device realize clock synchronizat...

Embodiment 2

[0102] Based on the same inventive concept as in Embodiment 1, a protective relay device of the present invention includes:

[0103] The clock synchronization module is used to synchronize the clock of itself with each relay protection device and FlexE switch in the transmission ring network;

[0104] The receiving data module is used to receive the sampling data message sent by the opposite relay protection device through the FlexE slicing network, and the sampling data message includes sampling value, frame time stamp and delay accumulation;

[0105] The data analysis module is used to analyze the sampling data message to obtain the sampling value and the delay accumulation, where the delay accumulation time value is the accumulation of the difference between the frame time stamps of the two adjacent communication parties on the transmission path, which is used as the relay protection device from the opposite end total path delay;

[0106] The synchronous collection module ...

Embodiment 3

[0109] Based on the same inventive concept as in Embodiment 1, a power communication relay protection service delay control system of the present invention includes: a first relay protection device, a second relay protection device, and a FlexE slice network;

[0110] The first relay protection device and the second relay protection device are connected through the FlexE slice network to form a transmission ring network; and each relay protection device and the FlexE switch in the transmission ring network maintain clock synchronization;

[0111] The first relay protection device is configured to send a sampled data message to the FlexE slice network, where the sampled data message includes a sampled value, a frame time stamp, and a delay accumulation;

[0112] The second relay protection device is used to receive the sampled data message transmitted through the FlexE slicing network, analyze the sampled data message to obtain the sampled value and the accumulated delay, where...

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PUM

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Abstract

The invention discloses a delay control method and system for power communication relay protection services and relay protection equipment. Each relay protection equipment is connected through a FlexE slice network formed by a plurality of FlexE switches to form a transmission ring network. The relay protection device and the FlexE switch perform clock synchronization; the relay protection device receives the sampling data message sent by the peer relay protection device through the FlexE slicing network, analyzes and obtains the sampling value and delay accumulation, and the delay accumulation time value is the time value on the transmission path The accumulation of the difference between the frame time stamps of the two adjacent communication parties is used as the total path delay from the opposite end to the relay protection device; the relay protection device obtains the sampling value synchronously collected with the opposite end according to the total path delay. The invention measures the total path delay of the FlexE slicing network between two relay protection devices, adjusts the sampling time accordingly, and ensures the synchronous measurement of the two relay protection devices.

Description

technical field [0001] The invention belongs to the field of micro-grid technology, and in particular relates to a method for controlling the time delay of power communication relay protection services under a FlexE (Flexible Ethernet, Flexible Ethernet) bearer architecture, and also relates to a time delay control method for power communication relay protection services under a FlexE bearer architecture. It also relates to a relay protection device. Background technique [0002] The power system is a power production and consumption system composed of power generation, power transformation, power transmission, power distribution, and power consumption. As power supply covers all aspects of social production and life, the safety and reliability of the power grid is crucial. As the first line of defense in the power system, relay protection can quickly detect the fault state, realize rapid and automatic fault isolation, effectively guarantee the safety of the power grid, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04J3/08H04L12/42
CPCH04J3/0667H04J3/0682H04J3/085H04L12/422
Inventor 李伟戴勇汪大洋江凇沈盟魏英达徐勇贾平李沛吴细老蒋春霞柳旭
Owner INFORMATION & COMM BRANCH OF STATE GRID JIANGSU ELECTRIC POWER
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