報告書番号

T90044

タイトル（和文）

電圧安定運用のための実用的解析プログラムの開発－系統電圧シミュレーション解析プログラム－

タイトル（英文）

PRACTICAL PROGRAM FOR COMPUTING VOLTAGE STABILITY IN BULK POWER SYSTEMS -DEVELOPMENT OF LONG-TERM SYSTEM- VOLTAGE SIMULATION PROGRAM-

概要 （図表や脚注は「報告書全文」に掲載しております）

近年の電力系統は電力設備の立地難などから電源の遠隔化と偏在化や送電線の重潮流化の趨勢が顕著になってきており，電力系統の安定運用のために従来にも増して高度な技術が必要となっている。なかでも最近，電圧不安定現象は広く注目を集め，この現象の物理的因果関係や進行過程を詳細に把握する実用的な解析システムの開発は電圧安定運用のため焦眉の急となっている。このため，電圧不安定現象を解析するプログラムに関して，電力系統の設備計画や運用計画など実用面からのニーズを主眼において，既開発の系統電圧シミュレーション解析プログラムの機能を拡充するとともに，計算処理過程におけるマンマシン性にも優れた実用性の高い解析プログラムの開発を行った。

概要 （英文）

TODAY S BULK POWER SYSTEMS REQUIRE MORE-AND-MORE SOPHISTICATED OPERATION TECHNIQUES BECAUSE OF HEAVIER LOADS ON LONGER TRANSMISSION LINES FROM LARGER AND MORE DISTANT POWER GENERATING SITES. IN PARTICULAR RUNCH ATTENTION HAS BEEN PAID TO THE VOLTAGE-INSTABILITY PHENOMENON IN THE RECENT YEARS. A PROGRAM TO ANALYZE THE CAUSAL RELATIONSHIP AND CASCADING PROCESS OF THE PHENOMENON IS AN ESSENTIAL TOOLFOR STABLE SYSTEM-VOLTAGE OPERATION. THIS STUDY ESTABLISHES A PRACTICAL SIMULATION PROGRAM WHICH ANALYZES THE LONG-TERM BEHAVIOR OF BUS VOLTAGES AFTER A DISTURBANCE SUCH AS A RAPID LOAD INCREASE AND TRANSMISSION LINE/GENERATOR TRIP; THE PROGRAM TAKES INTO CONSIDERATION THE ACTION OFVARIOUS VOLTAGE-REGULATING EQUIPMENT SYSTEM,ON THE BASIS OF TIME-DOMAIN SIMULATION FROM SEVERAL SECONDS TO 30 OR 45 MINITES. THE MAIN FEATURES OF THE NEWLY-DEVELOPED PROGRAM ARE AS FOLLOWS: (1)LONG-TERM SIMULATION AND HIGH-SPEED SOLUTION GENERATORS AND THEIR CONTROL SYSTEMS (AVR ANDGOV) ARE REPRESENTED BY ALGEBRAIC EQUATIONS BY DISREGARDING SHORT TIMECONSTANTS,AND ARE INCORPORATED INTO A JACOBIAN MATRIX OF LOAD-FLOW CALCULATIONS FOR LONG-TERM AND HIGH-SPEED SIMULATION OF SYSTEM VOLTAGES. (2)PRACTICAL ANALYSIS UNDER ACTUAL OPERATION CONDITION. THE PROGRAM INCLUDES ANALYTICAL MODELS OF ALL THE VOLTAGE-REGULATING DEVICES IN JAPAN SBULK POWER SYSTEM,AS WELL AS CENTRAL CONTROL FUNCTIONS SUCH AS AUTOMATIC GENERATION CONTROL AND CENTRAL VOLTAGE CONTROL SYSTEMS. DYNAMIC LOADCHARACTERISTICS CAUSED BY CASCADING OF ON-LOAD TAP CHANGERS IN LOAD-SUPPLY SUBSYSTEMS CAN ALSO BE SIMULATED FOR PRACTICAL ANALYSIS UNDER ACTUAL OPERATION CONDITIONS. (3)EASY INPUT/OUTPUT INTERFACE TO INPUT DATA EASILY, THE PROGRAM INPUT FORM IS ON THE SARVE BASIS AS THE FORMAT COMMONLY USED WITH EXISTING CRIEPI POWER-SYSTEM ANALYTICAL TOOLS. TO ASSESS OUTPUT DATA EFFICIENTLY,ALL THE SIMULATION RESULTS,SUCH AS P-V CURVES,BEHAVIORS OF BUS VOLTAGES,OUTPUTS OF VOLTAGE-REGULATING DEVICES,AND VOLTAGE-STABILITY INDICES CAN BE

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