JP5775641B2 - オンライン電気回路の定数測定による電力設備状態の監視システム及び方法 - Google Patents
オンライン電気回路の定数測定による電力設備状態の監視システム及び方法 Download PDFInfo
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- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
- G01R27/32—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
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- G01R31/2836—Fault-finding or characterising
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
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- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Description
前記演算部24は、デジタル信号処理器(Digital Signal Processor)で具現されることができる。例えば、前記演算部はTMS320F28335で具現できる。
εα=2Ar/cosβ−ε−αをAi=[εαsinβ+ε−αsinβ]/2に代入すれば、数15のように表される。
Claims (6)
- 変流器(CT)及び電圧変成器(PT)によって測定される電力設備の電流及び電圧を時間同期信号に同期させてデジタル信号に変換するA/D(analog/digital)変換部と、前記A/D変換部に前記時間同期信号を提供するGPS(Global Positioning System)モジュールと、前記A/D変換部から出力される信号をイーサネット(登録商標)を介して伝送する通信モジュールとを含む測定装置と、
前記通信モジュールを介して送信される計測データを受け取るための入力部と、前記入力部を介して入力される計測データを用いて測定対象の設備に対する線路定数を算出する演算部と、前記算出された線路定数を所定の通信規格によって伝送する通信部と、前記入力部と演算部と通信部との動作を制御しつつ前記算出された線路定数の大きさや増減率が既に設定された基準値を外れるかどうかによって電力設備の異常有無を判断した上でアラーム、状態通知メッセージまたはトリップ信号を出力して電力設備を監視制御する監視制御部とを備える電力設備状態監視装置と、
前記電力設備状態監視装置から提供される線路定数を用いて電力設備の状態を予測するHMI(Human Machine Interface)とを含み、
前記測定対象は、短距離設備、中距離設備、および長距離設備を含み、
前記線路定数は、抵抗、インダクタンス、静電容量、および漏れコンダクタンスを含み、
前記演算部は、
前記測定対象が短距離送電線路または中小容量の電力設備の場合、前記漏れコンダクタンスと静電容量を除いて、直列要素である抵抗およびインダクタンスからなる等価回路を用いて、前記線路定数のうち抵抗およびインダクタンスを計算し、
前記測定対象が中距離送電線路または大容量の電力設備の場合、前記漏れコンダクタンスを除いて、直列要素である抵抗およびインダクタンスと並列要素である静電容量からなる等価回路を用いて、且つ、4端子線路定数の計算によって前記線路定数を演算し、
前記測定対象が長距離送電線路または百万KVA級以上の超大容量の電力設備の場合、π型等価回路を用いて、且つ、4端子線路定数の計算によって前記線路定数を演算することを特徴とする線路定数を用いた電力設備状態監視システム。 - 前記通信規格は、デジタル変電所で使用するIEC61850及びIEC61970のような通信プロトコルであることを特徴とする請求項1に記載の線路定数を用いた電力設備状態監視システム。
- 前記演算部は、前記計測データに対する零相分を算出して前記計測データから前記算出された零相分を差し引いて除去することを特徴とする請求項1に記載の線路定数を用いた電力設備状態監視システム。
- 外部入力によって測定時間の設定及び測定対象設備を選択する段階と、
前記選択された測定対象設備で計測された電流及び電圧データを受け取る段階と、
前記入力された電流及び電圧データにタグ付き時間情報を参照して前記設定された測定時間にあたる電流及び電圧データを抽出する段階と、
前記抽出された電流及び電圧データから零相分を除去する段階と、
前記零相分が除去された電流及び電圧データを用いて前記選択された測定対象に対する線路定数を算出する段階と、
前記算出された線路定数の大きさや増減率が、既に設定された基準値を外れるかどうかによって電力設備の異常有無を判断してアラーム、状態通知メッセージまたはトリップ信号を出力する段階とを含み、
前記測定対象は、短距離設備、中距離設備、および長距離設備を含み、
前記線路定数は、抵抗、インダクタンス、静電容量、および漏れコンダクタンスを含み、
線路定数の算出段階は、
前記測定対象が短距離送電線路または中小容量の電力設備の場合、前記漏れコンダクタンスと静電容量を除いて、直列要素である抵抗およびインダクタンスからなる等価回路を用いて、前記線路定数のうち抵抗およびインダクタンスを計算し、
前記測定対象が中距離送電線路または大容量の電力設備の場合、前記漏れコンダクタンスを除いて、直列要素である抵抗およびインダクタンスと並列要素である静電容量からなる等価回路を用いて、且つ、4端子線路定数の計算によって前記線路定数を演算し、
前記測定対象が長距離送電線路または百万KVA級以上の超大容量の電力設備の場合、π型等価回路を用いて、且つ、4端子線路定数の計算によって前記線路定数を演算することを特徴とする線路定数測定による電力設備のオンライン状態監視方法。 - 前記時間情報は、前記電流及び電圧データの計測時、GPSの受信によって受信されることを特徴とする請求項4に記載の線路定数測定による電力設備のオンライン状態監視方法。
- 前記線路定数の算出段階は、前記測定対象が長距離送電線路または百万KVA級以上の超大容量の電力設備の場合、π型等価回路に変換して4端子定数の計算及び減衰定数、位相定数を計算し、その計算された4端子定数及び減衰定数、位相定数を用いて長距離設備の線路定数を演算することを特徴とする請求項4に記載の線路定数測定による電力設備オンライン状態監視方法。
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KR1020110094725A KR101171027B1 (ko) | 2011-09-20 | 2011-09-20 | 온라인 전기회로 정수 측정에 의한 전력설비 상태감시 시스템 및 방법 |
KR10-2011-0094725 | 2011-09-20 | ||
PCT/KR2012/007475 WO2013042925A1 (ko) | 2011-09-20 | 2012-09-19 | 온라인 전기회로 정수 측정에 의한 전력설비 상태감시 시스템 및 방법 |
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JP2011033588A (ja) * | 2009-08-05 | 2011-02-17 | Toshiba Corp | 事故点標定方法およびそのシステム |
KR20110025488A (ko) * | 2009-09-04 | 2011-03-10 | 현대중공업 주식회사 | 전력데이터 전송용 통신장치 |
CA2774517C (en) * | 2009-09-18 | 2015-01-27 | Schweitzer Engineering Laboratories, Inc. | Electrical power system phase and ground protection using an adaptive quadrilateral characteristic |
US8792217B2 (en) * | 2010-09-15 | 2014-07-29 | Schweitzer Engineering Laboratories Inc | Systems and methods for protection of components in electrical power delivery systems |
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2011
- 2011-09-20 KR KR1020110094725A patent/KR101171027B1/ko active IP Right Grant
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2012
- 2012-09-19 JP JP2014528307A patent/JP5775641B2/ja not_active Expired - Fee Related
- 2012-09-19 WO PCT/KR2012/007475 patent/WO2013042925A1/ko active Application Filing
- 2012-09-19 EP EP12834402.5A patent/EP2765430A4/en not_active Withdrawn
- 2012-09-19 US US14/346,176 patent/US20140327448A1/en not_active Abandoned
- 2012-09-19 CN CN201280045336.9A patent/CN103814300B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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CN103814300B (zh) | 2015-11-25 |
EP2765430A4 (en) | 2015-09-09 |
KR101171027B1 (ko) | 2012-08-08 |
EP2765430A1 (en) | 2014-08-13 |
US20140327448A1 (en) | 2014-11-06 |
JP2014532388A (ja) | 2014-12-04 |
WO2013042925A1 (ko) | 2013-03-28 |
CN103814300A (zh) | 2014-05-21 |
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