Electromagnetic Interference In Substation Research Articles

Research on Performance of Anti-metal RFID in Field Test of Type and 500kV Substation

With the rapid increase of power equipment and increasing the size of the stock, the traditional means of maintenance of operation and maintenance can not meet the new needs of modern operation and maintenance, the urgent need to improve the level of power transmission equipment and power transmission equipment, intelligent perception of lean management level. RFID tags have been widely used in all parts of the state grid system, the performance difference showed against the anti-metal UHF RFID tags in different environment, this paper analyzes the different specifications of the anti-metal UHF RFID tag performance in the laboratory environment type test and the substation environment. Through laboratory environment simulation test and substation field environment test, research the frequency range and interference intensity of field electromagnetic interference in Substation, to get the main reasons that affect the performance of the anti-metal UHF RFID tags. It has certain value on research the interference mechanism of substation anti-metal UHF RFID tags and anti-metal UHF RFID tags application promotion.

A Surface Strain Monitoring Technique for Slope of Mountainous Area Substation Based on FBG Sensor

Geological structure health in mountainous area substation is complex, and the climate is changeable, it is easy to appear the geological disasters like landslide and subsidence in substation, Aiming at the strong electromagnetic interference in substation and other factors, to monitor of slope surface strain of mountainous area substation with FBG strain sensor, in order to reflect the stability of the slope. Combined with the actual situation of slope of Yunnan 220kV mountainous area substation, the surface type FBG strian sensors are installed on the surface of upstream and downstream slope of mountainous area substation, the lower reaches of the substation, the serial network forms a quasi distributed optical fiber sensing network. they form a quasi-distributed optical fiber sensing network through the serial networking methods.When the slope surface occurs deformation due to the soil sliding, it will drive the FBG strain sensor and transfer the equal strain to the FBG strain sensor. By measuring the center wavelength shift of the FBG strian sensor, the strian value of slope surface at each point can be reflected. The monitoring results show that, the period from May 9th to June 6th, the maximum strain of upstream slope is 171uɛ, it appears at the location of marked as US4 FBG strain sensor, the maximum strain of downstream slope is 112uɛ,it appears at the location of marked as DS1 FBG strain sensor.

Substation Electromagnetic Interference, Part I: Characterization and Description of the Transient EMI Problem

Substation Electromagnetic Interference, Part I: Characterization and Description of the Transient EMI Problem

Substation Electromagnetic Interference, Part II: Susceptibility Testing and EMI Simulation in High Voltage Laboratories

Substation Electromagnetic Interference, Part II: Susceptibility Testing and EMI Simulation in High Voltage Laboratories

Substation Electromagnetic Interference Part 1: Characterization and Description of the Transient EMI Problem

The problem of electromagnetic interference with automation and control equipiment in power substations is defined in detail. Instrumentation techniques for measuring electric and Tmagnetic fields are reviewed and actual field data is presented. Several approaches to equipment protection and susceptibility testing are presented from the utility perspective. Examples of transient EHI and conducted interference are included and recommendations are miade as to equipment hardening and design techniques.

Substation Electromagnetic Interference Part 2: Susceptibility Testing and EMI Simulation in High Voltage Laboratories

Susceptibility testing techniques for conducted and radiated interference are presented in detail. Withstand levels and test procedures are described. The relationship between substation transients and those generated in high voltage laboratories is discussed with data presented. The problem of instrumentation in these laboratories is presented with quantitative comparisons to substation EilI levels. A qualitative evaluation of those transients which Cdn be generated in thie typical laboratory is included. The use of interference sinmulators is also discussed.