The Effect of Time Synchronization Error in LAN-Based Digital Substation

In this paper, the effect of time synchronization error on protection algorithms are studied for the usage of the LAN-based collaborative protection. In order to derive the effect of time synchronization, this paper proposes a substation model which is constructed with IEEE 1588 Precision Time Protocol (PTP) supported intelligent electronic devices. The proposed model is used as an example of a target platform to study the effect of time synchronization error with two typical substation protection algorithms, i.e., current differential-based substation protection and distance protection algorithms. From the analyzed and the simulated results, it was well observed that time synchronization error is a significant error-causing factor for both protection algorithms, resulting in erroneous detection of faults and erroneous estimation of fault distances, respectively. The results of research performed in this paper are expected to provide a good guide for constructing the future LAN-based digital power substation with precise time synchronization.

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LXI Precision Time Protocol Applied Research

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.330.561 ◽

2013 ◽

Vol 330 ◽

pp. 561-564 ◽

Cited By ~ 1

Author(s):

Ming Li ◽

Chun Ping Wang ◽

Zhi Qiang Wang

Keyword(s):

Real Time ◽

Applied Research ◽

Time Synchronization ◽

Local Area Network ◽

Local Area ◽

Test System ◽

Area Network ◽

Automatic Test System ◽

Precision Time ◽

Precise Time

In order to meet the real-time demands of some equipment networked test, the time synchronization techniques of ATS based traditional instrument buses are compared with the techniques of LXI ATS. Accordingly，the necessity of LXI ATS time synchronization technique study is put forward. The sorts of time synchronization techniques based on Local Area Network are analyzed. In addition, some methods which could improve the level of LXI data real-time communications are presented. Afterwards, technique realizations of PTP are studied in detail. Local Area Network techniques and IEEE 1588 Precise Time Protocol are adopted in the LXI Automatic Test System which designed in the paper, and the level of time synchronization precision in the system is improved.

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LXI Precision Time Protocol Applied Research

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.772.432 ◽

2013 ◽

Vol 772 ◽

pp. 432-435

Author(s):

Ming Li ◽

Chun Ping Wang ◽

Zhi Qiang Wang

Keyword(s):

Real Time ◽

Applied Research ◽

Time Synchronization ◽

Local Area Network ◽

Local Area ◽

Test System ◽

Area Network ◽

Automatic Test System ◽

Precision Time ◽

Precise Time

In order to meet the real-time demands of some equipment networked test, the time synchronization techniques of ATS based traditional instrument buses are compared with the techniques of LXI ATS. Accordingly,the necessity of LXI ATS time synchronization technique study is put forward. The sorts of time synchronization techniques based on Local Area Network are analyzed. In addition, some methods which could improve the level of LXI data real-time communications are presented. Afterwards, technique realizations of PTP are studied in detail. Local Area Network techniques and IEEE 1588 Precise Time Protocol are adopted in the LXI Automatic Test System which designed in the paper, and the level of time synchronization precision in the system is improved.

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Hardware-based solution of precise time synchronization for Networked Control System

2011 International Conference on Electronics, Communications and Control (ICECC) ◽

10.1109/icecc.2011.6067829 ◽

2011 ◽

Cited By ~ 1

Author(s):

Wenjun Huang ◽

Yuan Jin ◽

Weimin Wang ◽

Yiming Shi ◽

Yun Zhou

Keyword(s):

Control System ◽

Time Synchronization ◽

Networked Control System ◽

Networked Control ◽

Precise Time

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Virtual Digital Substation Test System and Interoperability Assessments

Energies ◽

10.3390/en14082337 ◽

2021 ◽

Vol 14 (8) ◽

pp. 2337

Author(s):

Linwei Chen ◽

Haiyu Li ◽

Thomas Charton ◽

Ray Zhang

Keyword(s):

Test System ◽

Communication Services ◽

Iec 61850 ◽

Analysis Tools ◽

Information Models ◽

Digital Substation ◽

Interoperability Testing ◽

Automation And Control ◽

And Control ◽

Intelligent Electronic Devices

Interoperability testing and analysis tools provide a means for achieving and assuring the integrity of multivendor intelligent electronic devices (IEDs) data exchanges. However, the testing and analysis are very time consuming and error prone, and these problems worsen when a substation becomes large and complex during the engineering process, commission, replacement, maintenance, and extension. To address this challenge, this paper presents a virtual digital substation test system (VDSTS) with interoperability analysis tools for assessing and identifying the engineering challenges for the multiple-vendors digital substation. This VDSTS consists of three parts: (i) A virtual digital substation modelling for generating real-time digital substation primary plant operation and fault conditions, (ii) a standard IEC 61850-based substation protection, automation, and control (PAC) system architecture with multivendor IEDs and bay solutions, and (iii) multivendor Substation Configuration description Language (SCL) tools and in-house built data visualisation tool. The study focuses on the interoperability testing of sampled values (SV), generic object-oriented substation events (GOOSE), and manufacturing message specification (MMS) communication services, as defined in IEC 61850. The main issues identified are compatibility issues of SCL tools, protocol implementation issues, different information models, and application limitations. The outcomes will help utilities to reduce the risks associated with the general rollout of digital substations.

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