Xuchang KETOP Electrical Apparatus Testing and Research Institute

Xuchang, China

Xuchang KETOP Electrical Apparatus Testing and Research Institute

Xuchang, China
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He C.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Zhang R.,Xuchang KETOP Electrical Apparatus Testing and Research Institute
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2012

This paper introduces the organizations, test objects, participating companies, and the test environment of interoperability (IOP) test held by utility communication architecture (UCA) International User Group in Paris, France in March, 2011. The IOP test consists of 5 parts, namely, network infrastructure, SCL configuration system, client/server, GOOSE and sampled value testing. It summarizes the test items, IOP issues, and conclusions of each type of test. The IOP test proves that the first edition IEC 61850 has preferable IOP, but the SCL files and network configuration should be concerned in the engineering project implementation. Some of the IOP issues need to be revised in the new standard by IEC TC57. This IOP test has reference value to the engineering joint testing of smart substations in China. © 2012 State Grid Electric Power Research Institute Press.


He C.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Ren C.,Xuchang KETOP Electrical Apparatus Testing and Research Institute
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2012

The characteristics of total vector error (TVE) are analyzed by proceeding from its basic concept. The commonly used amplitude error index and phase error index are compared with the TVE index. The comparison results show that there exists a very intimate relationship between the TVE and the amplitude-phase errors, and the two of them each have their advantages and disadvantages in the static accuracy evaluation of the phasor measurement unit (PMU). So, it is recommended that appropriate evaluation indices be chosen according to the test results and the key contents in the test. The key points of PMU TVE testing are proposed. © 2012 State Grid Electric Power Research Institute Press.


Zhou P.-P.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Wang Z.-X.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Li Z.-Y.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Li S.-Y.,Xuchang Power Supply Company | Wang L.-J.,Xuchang KETOP Electrical Apparatus Testing and Research Institute
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2014

As the output stage of power system real-time simulation and relay protection testing, the current type power amplifier needs high precision and quick response. There are two kinds of manners to implement the current type power amplifier: linear power amplifier and PWM power amplifier. The PWM power amplifier gains widespread concern due to its high output efficiency. But compared to the linear power amplifier, it needs to resolve the complicated problem of filtering output and closed-loop control. The paper designs three closed-loop control methods applicable to the current type power amplifier, makes detailed numerical analysis and research, contrasts the different emphasis of the three control methods in low frequency accuracy, response speed and amplitude accuracy, and offers suggestion to the choice of three control methods.


Wang F.,GuiZhou Power Grid Co. | Zhang C.,GuiZhou Power Grid Co. | He C.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Chen Z.-G.,GuiZhou Power Grid Co.
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2013

In order to improve the communication efficiency and stability of protection relay fault information system (hereinafter referred to as PRFIS), based on the analysis of current situation of PRFIS, this paper puts forward a method of online communication message analysis for PRFIS, via monitoring of communication messages between master station and slave station, analyzing the error of messages, obtaining the reason that causes the error, and raising the way to correct the error. After a period of trial operation, it has been found that the online communication message analysis system can find and analyze some errors of PRFIS, accordingly it improves the communication quality of PRFIS.


Wang Z.-X.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Zhou P.-P.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Jia D.-F.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Zhuang L.-W.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Li S.-Y.,Xuchang Power Supply Company
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2013

In order to test the performance of control and protection of thyristor valve synthetic test circuit (STC), small step algorithm is put forward in the modeling process of the primary system of STC. This paper analyzes the operating principle of the STC, works out its requirements for the control and protection system, and sets up the STC primary system model with RTDS small step algorithm. This paper aims at the restrictions of small step algorithm in simulating the STC, especially in the low voltage simulation, and proposes 'equivalent simulation' by raising the converter transformer voltage, so the interaction process between voltage source and current source can be simulated correctly. The results of simulation test show that the model established with RTDS small step algorithm can imitate the valve's operating condition accurately. All the tests of the synthetic test circuit are conducted successfully in the simulation test environment, and reach a good trial effect.


Wang F.,GuiZhou Power Grid Co. | Zhang Z.-R.,GuiZhou Power Grid Co. | Ren C.-M.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Chen Z.-G.,GuiZhou Power Grid Co. | Zhang R.,Xuchang KETOP Electrical Apparatus Testing and Research Institute
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2012

At present, there are no mature test methods and mature test tools for relay protection fault information system substation, which brings difficulties for network access test. The automation test system for the development of relay protection fault information system substation is introduced. It combines the basic test case library with substation information to realize the automatic generation of test scheme, the automatic operation of test, and the automatic evaluation of test results. The running results of the site test are analyzed and summarized. The test result indicates that the test system completes a comprehensive test for relay protection fault information system substation, effectively solving the difficulties of network access testing.


Zhou P.-P.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Li S.-Y.,Xuchang Electrical Power Corporation | Li Z.-Y.,Xuchang KETOP Electrical Apparatus Testing and Research Institute | Wang W.,Xuchang KETOP Electrical Apparatus Testing and Research Institute
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2012

For the researchers in the field of power system protection, how to study the principles and develop the programs without the actual protection devices and at the same time reduce the development cost and shorten the development cost, the application of IEC 61850 standard has brought chances to this question. This paper elaborates on the new platform of four components: communication protocols and networking, real-time operating systems and network card drivers, RTDS real-time simulation, MATLAB/Simulink graphical modeling protection logic, thus forming the new digital simulation platform based on IEC61850 without the actual protection devices. The 110 kV line distance protection is taken for an example, which verifies that the new platform is real-time and correct.

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