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CONTROLLING VOLTAGE AT TRIVANDRUM AND FLOW ON EDAMON-KAYATHAR

This article discusses the advantages, issues of concern, and possible solutions for controlling voltage at Trivandrum and flow on the Edamon-Kayathar line. It also explores the impact on the overall stability and transfer margin of the Kerala power system.

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CONTROLLING VOLTAGE AT TRIVANDRUM AND FLOW ON EDAMON-KAYATHAR

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  1. CONTROLLING VOLTAGE AT TRIVANDRUM AND FLOW ON EDAMON-KAYATHAR

  2. ADVANTAGES OF MADURAI-TRIVANDRUM LINE • ALTERNATE SUPPLY PATH TO TRIVANDRUM AREA • INCREASED STABILITY OF S.KERALA SYSTEM • DECREASED LOSSES • IMPROVED TRANSFER MARGIN – FACILITATING BETTER MERIT ORDER OPERATION AND ECONOMY

  3. THE ISSUES OF CONCERN • HIGH VOLTAGE AT TRIVANDRUM • TRIPPING OF ICT ON V/F AT NIGHT • RISK OF TRIPPING OF LINE • CONTINUED HIGH LOADING ON 220 KV EDAMON-KAYATHAR PREVENTING FURTHER DECREASE IN GENERATION IN KSEB SYSTEM

  4. CONTROLLING VOLTAGE AT TRIVANDRUM AND FLOW ON EDAMON-KAYATHAR

  5. POSSIBLE SOLUTIONS • TRIPPING 220 KV EDAMON KAYATHAR LINE • ADVANTAGES • FLOW INCREASES ON 400 KV MADURAI-TRIVANDRUM LINE • CONSTRAINTS OF DRAWAL BY KERALA ARE RELAXED • VOLTAGES AT 400 KV REDUCED • ISSUES/CONCERNS • INCREASED LOADING IN TN SYSTEM ESPECIALLY DURING WINDMILL GENERATION • HIGH LOADING ON 220 KV S/C TTPS-SIPCOT SECTION(16 KMS) • LINE TO BE BROUGHT BACK WHEN EVER POSSIBLE

  6. POSSIBLE SOLUTIONS • SPLIT BUS OPERATION AT 220 KV EDAMON STATION • ADVANTAGES • FLOW INCREASES ON 400 KV MADURAI-TRIVANDRUM LINE AND DECREASES ON 220 KV EDAMON-KAYATHAR LINE • CONSTRAINTS OF DRAWAL BY KERALA ARE RELAXED • VOLTAGES AT 400 KV REDUCED • ISSUES/CONCERNS • SPLIT BUS OPERATION RESULTS IN PROTECTION SYSTEM AND OPERATIONAL COMPLEXITIES • MAY HAVE TO BE RE-WORKED DEPENDING ON CHANGING SYSTEM CONDITIONS • ACTUAL SITE CONDITIONS REQUIRES TO BE EXAMINED

  7. 110 KV

  8. CONSTITUENTS TO REVERT BACK WITH FOLLOWING DETAILS • SINGLE LINE DIAGRAM OF EDAMON 220 KV STATION, 220/110 TRF LOADS • WINDMILL GENERATION IN TN, TYPICAL LOADING ON TTPS EVACUATION LINES • SCHEME HAS TO BE RE-WORKED IN CASE GENERATION PROFILE CHANGES • KAYAMKULAM IS ON BARS • LOW WINDMILL IN TN ETC

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