Luận văn thạc sĩ Kỹ thuật điện: Định vị sự cố trên đường dây tải điện sử dụng phương pháp sóng chạy

CÔNG TRÌNH ĐƯỢC HOÀN THÀNH TẠI TRƯỜNG ĐẠI HỌC BÁCH KHOA –ĐHQG -HCM Cán bộ hướng dẫn khoa học : PGS.TS Nguyễn Văn Liêm Ghi rõ họ, tên, học hàm, học vị và chữ ký Cán bộ chấm nhận xét 1 : .

C+ѬѪ1* GIӞI THIӊU CHUNG

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C+ѬѪ1* TӘNG QUAN

GIӞI THIӊ8%ơ,72ẩ1ĈӎNH Vӎ SӴ CӔ

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TiӃt kiӋm thӡi gian và công sӭc: KLFyVӵFӕ QJҳQPҥFK [ҧ\UDWUrQÿѭӡQJGk\

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Cҧi thiӋQÿӝ tin cұy cung cҩSÿLӋn: ViӋc bҧo trì nhanh và hiӋu quҧ dүQÿӃn cҧi thiӋQÿӝ liên tөc cung cҩSÿLӋQFKRNKiFKKjQJ'RÿyÿLӅXQj\WăQJFѭӡng hiӋu quҧ tәng thӇ cӫDOѭӟLÿLӋn

Hӛ trӧ cho viӋc bҧo trì: Các sӵ cӕ ngҳn mҥch WUrQÿѭӡng dây truyӅn tҧLÿDSKҫn là sӵ cӕ thoáng qua, khi hӋ thӕng tӵ ÿӝQJÿyQJOҥi (F79 - Reclose) thì các sӵ cӕ này sӁ bӏ loҥi bӓ, hӋ thӕng hoàn toàn không bӏ ҧQKKѭӣng Tuy nhiên viӋc phân tích nhӳng sӵ cӕ này có thӇ JL~SFK~QJWD[iFÿӏQKÿѭӧc nhӳQJ³\ӃXÿLӇP´WUrQWәng thӇ ÿѭӡng dây truyӅn tҧLĈLӅu này sӁ hӛ trӧ cho viӋc bҧo trì ÿѭӡng dây FǊQJQKѭWUiQKQKӳng sӵ cӕ có thӇ xҧy ra lһp lҥLWURQJWѭѫQJODL

YӃu tӕ kinh tӃ: Tҩt cҧ nhӳng lӧLtFKÿmÿӅ cұp ӣ trên có thӇ ÿѭӧc xem xét ӣ khía cҥnh kinh tӃ ViӋc tiӃt kiӋm thӡi gian và công sӭc tìm kiӃPQѫL[ҧy ra sӵ cӕ OjPWăQJ ÿӝ tin cұy cung cҩSÿLӋn, góp phҫn giҧPFKLSKtYjWăQJOӧi nhuұn - ÿk\OjPӝt khái niӋm thiӃt yӃu trong thӏ WUѭӡng cҥQKWUDQK'RÿyWҫm quan trӑng cӫDÿӏnh vӏ sӵ cӕ trong hӋ thӕQJÿLӋn là hiӇn nhiên

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2.2.2 3KѭѫQJSKiSVӱGөQJPҥQJ1ѫURQ QKkQWҥR

&iFPҥQJ1ѫURQWURQJWKӡL JLDQJҫQÿk\ÿmÿѭӧFÿѭDYjRVӱGөQJFKRYLӋFÿӏQKYӏ VӵFӕ>8@YjFyêQJKƭDTXDQWUӑQJWӯNKL6REDMLFYj3DRVӱGөQJFiFPҥQJNѫURQÿӇGӵEiRWKӡLJLDQKRjQWҩWWKDRWiFFӫDRelay [9@0ҥQJ1ѫURQEҳWÿҫXÿѭӧFVӱGөQJUӝQJUmLQyLFKXQJWӯFXӕLQKӳQJQăP WiPPѭѫLYjWURQJVXӕWWKӡLJLDQQKӳQJQăPFKtQPѭѫLFӫDWKӃNӹ;;&yUҩWQKLӅXQKӳQJP{KuQKYjWKXұWWRiQPҥQJNѫURQÿm ÿѭӧFÿӅ[XҩWYjӭQJGөQJQKѭQJSKәELӃQQKҩWOjFiFPҥQJWUX\ӅQWKҷQJQKLӅXOӟSYӟL

HVTH: Võ Sዣ Danh 9 FiFNKӕL[ӱOêWUXQJWkPOjNKӕLNѫURQSHUFHSWURQPjÿҥLGLӋQÿLӇQKuQKOjPҥQJ0/3

7yPWҳWOҥLQKuQFKXQJFiFJLҧLSKiSÿmÿѭӧFQJKLrQFӭXYjSKiWWULӇQNKiFELӋW QKDXNKiOӟQYӅêWѭӣQJWKXұWWRiQP{KuQKFӫDÿӕLWѭӧQJFǊQJQKѭ YӅÿӝFKtQK[iFYjNKҧQăQJiSGөQJFӫD FiFNӃWTXҧ7URQJÿySKҧLNӇWӟLWtQKWәQJTXiWFӫDFiFJLҧLSKiSNKiWKҩSFyQJKƭDOjPӝWJLҧLSKiSWKѭӡQJ ÿѭӧF JLӟLKҥQWURQJPӝWQKyPÿӕL tѭӧQJKҽSYtGөFiFJLӟLKҥQYӅFҩSÿLӋQiSVӱGөQJYӅÿӝSKӭFWҥSFӫDPҥQJÿLӋQYӅFiFÿӕLWѭӧQJQJXӗQWҧLWURQJKӋWKӕQJYӅWtQKWX\ӃQWtQKSKLWX\ӃQEmRKzDFӫDFiFSKҫQWӱFKRQrQUҩWNKyiSGөQJÿѭӧFJLҧLSKiSFӫDKӋWKӕQJQj\VDQJKӋWKӕQJNKiFKRһFWKұPFKtWURQJFQJPӝWKӋWKӕQJQKѭQJYӟLFiFSKҫQWӱWҧLNKiFQKDX

PHÁP SÓNG LAN TRUYӄN

Mễ TҦ %ơ,72ẩ1ĈӎNH Vӎ SӴ CӔ BҴNG SểNG LAN TRUYӄN [5]

7URQJWҩWFҧQKӳQJKLӋQWѭӧQJTXiÿӝ[ҧ\UDWURQJKӋWKӕQJÿLӋQÿһFWUѭQJQKҩWOj VyQJODQWUX\ӅQEӣLWKӡLJLDQGLӉQUDQJҳQQKҩWWӯYjL0LFURJLk\ÿӃQ0ilLJLk\+LӋQ WѭӧQJVyQJQj\OLrQTXDQÿӃQVӵODQWUX\ӅQFӫDVyQJÿLӋQWӯVLQKUDEӣLSӵFӕWUrQ ÿѭӡQJGk\WUX\ӅQWҧLSKyQJÿLӋQWURQJNKtTX\ӇQKRһFNKLFKX\ӇQFKӃÿӝKRҥWÿӝQJ WUrQOѭӟL.KLFyPӝWVӵFӕQJҳQPҥFKWUrQÿѭӡQJGk\WUX\ӅQWҧLVyQJÿLӋQWӯVӁFKҥ\

WKHRÿѭӡQJGk\KѭӟQJQJѭӧFOҥLYӅÿҫXÿѭӡQJGk\

Hình 3.1: 6yQJODQWUX\ӅQWӯÿLӇPVӵFӕ

0ӝWVyQJÿLӋQWӯFyWKӇÿѭӧFFKLDWKjQKVyQJÿLӋQiSNӃWKӧSYӟLFiFKLӋQWѭӧQJ[ҧ\

UDWURQJÿLӋQWUѭӡQJYjVyQJGzQJÿLӋQNӃWKӧSYӟLWӯWUѭӡQJ 7tQKQăQJTXDQWUӑQJ QKҩWFӫDVyQJÿLӋQWӯOjVӵFKX\ӇQÿӝQJFӫDÿLӋQiSYjGzQJÿLӋQYӟLPӝWWӕFÿӝFDR GӑFWKHRÿѭӡQJGk\9LӋFVӱGөQJFiFKLӋQWѭӧQJVyQJWURQJYLӋF[iFÿӏQKYӏWUtVӵFӕ ÿzLKӓLSKҧL[HP[pWQKLӅXYҩQÿӅOêWKX\ӃWFKҷQJKҥQQKѭ

- 9ұQWӕFVyQJODQWUX\ӅQWURQJÿѭӡQJGk\

- 0{KuQKGzQJÿLӋQYӟLFiFWK{QJVӕUҧL - 6X\KDRVyQJYjELӃQGҥQJ

HVTH: Võ Sዣ Danh 11 ĈӝFKtQK[iFFӫDYLӋF[iFÿӏQKYӏWUtVӵFӕ EҵQJFiFKVӱGөQJVyQJWUX\ӅQSKөWKXӝF YjRYұQWӕFWUX\ӅQVyQJWURQJÿѭӡQJGk\9ұQWӕFQj\SKөWKXӝFYjRFiFWKDPVӕFӫD ÿѭӡQJGk\, EӏҧQKKѭӣQJEӣL VӵWKD\ÿәLFӫDQKLӋWÿӝP{LWUѭӡQJ{QKLӉPEӅPһWGk\

GүQ 9ұQWӕFWUX\ӅQVyQJFǊQJSKөWKXӝFYjRÿѭӡQJÿLFӫDVyQJÿLӋQWӯGRÿyQy ÿѭӧF[iFÿӏQKULrQJFKRWӯQJ ORҥL ÿѭӡQJGk\FKR ORҥL VӵFӕFKҥPÿҩWYjVӵFӕNK{QJ FKҥPÿҩW.KLFjLÿһWWKLӃWEӏÿӏQKYӏVӵFӕYұQWӕFWUX\ӅQsóng ÿѭӧF[iFÿӏQKWӯYLӋF WҥRUDFiFVyQJODQWUX\ӅQWUrQÿѭӡQJGk\EҵQJFiFKÿyQJ FҳWFiFWөÿLӋQKRһFPi\

FҳW ĈӏQKYӏYӏWUtEҵQJVyQJODQWUX\ӅQFKLDOjPORҥLFKtQK

- 0{KuQKÿҫX6ӱGөQJVyQJODQWUX\ӅQWҥPWKӡLGRÿLӇPVӵFӕSKiWUD

- 0{KuQKÿҫX6ӱGөQJWtQKLӋX[XQJSKiWUDWӯWKLӃWEӏVDXVӵFӕ

amp;iFWK{QJVӕWUX\ӅQVyQJ

.KL[pWÿѭӡQJGk\GjLӣFKӃÿӝWUX\ӅQVyQJVѫÿӗWK{QJVӕUҧLP{WҧTXiWUuQK tru\ӅQVóQJWUrQÿѭӡQJGk\WҧLÿLӋQ

Hình 3.2: 7K{QJVӕUҧLÿѭӡQJGk\GjL

HVTH: Võ Sዣ Danh 12 +ӋSKѭѫQJWUuQKYLSKkQELӇXGLӉQTXiWUuQKWUX\ӅQVóng WUrQÿѭӡQJGk\

7URQJÿy r 0 : ĈLӋQWUӣÿѫQYӏ FӫDPҥFKWUX\ӅQVyQJ WKHRÿѫQYӏFKLӅXGjL g 0 : ĈLӋQGүQUzÿѫQYӏ FӫDPҥFKWUX\ӅQVyQJ WKHRÿѫQYӏFKLӅXGjL

C 0 ĈLӋQGXQJ ÿӕLYӟLÿҩW WKHRÿѫQYӏFKLӅXGjL

L 0 ĈLӋQFҧP ÿѭӡQJGk\WKHRÿѫQYӏFKLӅXGjL

1ӃXÿѭӡQJGk\NK{QJWәQKDRr 0 = 0, g 0 = 0)

1JKLӋPWәQJTXiWFӫDKӋSKѭѫQJWUuQKWUrQGѭӟLGҥQJVyQJFKҥ\QKѭVDX

9ӟL OjWKjQKSKҫQVyQJWӟL OjWKjQKSKҫQVyQJSKҧQ[ҥ 7әQJWUӣVyQJ

9ӟL İ 0 : KҵQJVӕÿLӋQP{LFKkQNK{QJ İ r KҵQJVӕÿLӋQP{LFӫDP{LWUѭӡQJ (3.7)

ȝ 0 : ÿӝWӯWKҭPFKkQNK{QJ

ȝ r ÿӝWӯWKҭPP{LWUѭӡQJ

7UX\ӅQVyQJJLӳDP{LWUѭӡQJ

*LҧVӱFyVyQJWӟLXt ODQWUX\ӅQWURQJP{LWUѭӡQJFyWәQJWUӣ=1ĈӃQÿLӇP$Qy FKX\ӇQVDQJP{LWUѭӡQJFyWәQJWUӣVyQJ=2.KLVyQJWUX\ӅQVDQJP{LWUѭӡQJPӟLWKu QyVӁ[XҩWKLӋQWKjQKSKҫQVyQJNK~F[ҥXk ÿӗQJWKӡLFyWKjQKSKҫQVyQJSKҧQ[ҥXp vӅ P{LWUѭӡQJFǊ

Hình 3.3: 4XiWUuQKWUX\ӅQVyQJJLӳDP{LWUѭӡQJ PhѭѫQJWUuQKÿLӅXNLӋQELrQWҥL$

6ӵSKҧQ[ҥQKLӅXOҫQFӫDVyQJ

Hình 3.5: 6ӵSKҧQ[ҥQKLӅXOҫQFӫDVyQJ

Dӵa vào FiFSKѭѫQJSKiSÿRÿӏnh vӏ sӵ cӕ bҵng sóng lan truyӅn có thӇ chia thành 5 loҥi khác nhau: Loҥi A, B, C, D, E HoҥWÿӝng cӫa mӛi loҥLÿӅu dӵa trên viӋc phân tích VyQJÿLӋn tӯ nhұQÿѭӧc khi có sӵ cӕ diӉn ra7URQJÿyFiFORҥL$'(ÿѭӧc sӱ dөng rӝng rãi.

3KѭѫQJSKiSNLӇX$

KѭѫQJSKiSNLӇX%

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7URQJÿy: lsuco: /jNKRҧQJFiFKÿӃQÿLӇPVӵFӕP. t 2 : 7KӡLJLDQVyQJSKҧQ[ҥWӯÿLӇPVӵFӕÿӃQWUҥP$V t 17KӡLJLDQ[XQJÿLWӯWUҥP$ÿӃQÿLӇPVӵFӕV v9ұQWӕFWUX\ӅQVyQJPV.

KѭѫQJSKiSNLӇX'

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7URQJÿy: lsuco: /jNKRҧQJFiFKÿӃQÿLӇPVӵFӕP. tA: 7KӡLJLDQVyQJSKҧQ[ҥÿҫXWLrQWӯÿLӇPVӵFӕÿӃQ$V tB7KӡLJLDQVyQJSKҧQ [ҥ ÿҫXWLrQWӯVӵFӕÿӃQWUҥPB (s) v9ұQWӕFWUX\ӅQVyQJPV.

3.3.5 3KѭѫQJSKiSNLӇX(

ĈӕLYӟLSKѭѫQJSKiSQj\VyQJWUX\ӅQÿѭӧFWҥRUDEӣLFKtQKFiFPi\FҳWӣWUrQ ÿѭӡQJGk\7ѭѫQJWӵQKѭNLӇXC, sӱGөQJPi\WҥR[XQJFiFPi\FҳWO~FQj\FyWKӇ ÿѭӧF[HPQKѭOjPi\WҥR[XQJULrQJELӋW

7URQJÿy: lsuco: /jNKRҧQJFiFKÿӃQÿLӇPVӵFӕP t2: 7KӡLJLDQVyQJSKҧQ[ҥWӯÿLӇPVӵFӕÿӃQWUҥP$V t17KӡLJLDQ[XQJWҥRUDÿӃQÿLӇPVӵFӕ (s) v9ұQWӕFWUX\ӅQVyQJPV

ĈѬӠNG DÂY 500KV TRÊN MATLAB

GIҦI QUYӂ7%ơ,72ẩ1ĈӎNH Vӎ Vӎ TRÍ BҴNG SểNG TRUYӄN

7URQJOXұQYăQQj\SKѭѫQJSKiSÿROѭӡQJVyQJNLӇX$VӁÿѭӧFVӱGөQJ %LӃQÿәL Clarke NӃWKӧS:DYHOHWGEÿѭӧFGQJÿӇÿӏQKYӏYӏWUtVӵFӕ

Hình 4.1 Mô hình tính toán

4.1.1 BLӃQÿәLClarke ĈѭӡQJGk\WUX\ӅQWҧLEDSKDFyVӵWѭѫQJKӛ ÿLӋQWӯJLӳDFiFSKDGk\GүQ%ҵQJFiFKVӱGөQJFiFSKpSSKkQWtFKPRGHFiFÿLӋQiSYjGzQJÿLӋQWѭѫQJKӛÿѭӧFNKDLWULӇQWKjQKPӝWWұSFiFPRGHÿLӋQiSYjGzQJÿLӋQPӟLYjFyWKӇÿѭӧF[ӱOêWѭѫQJWӵQKѭ ÿѭӡQJGk\EDSKDÿѫQ7tQKLӋXEDSKDÿѭӧFELӃQÿәLWKjQKFiFWKjQKSKҫQSKѭѫQJWKӭFÿӝFOұSTXDPDWUұQ&ODUNH&өWKӇELӃQÿәL&ODUNe chúng ta FyWKӇ[HPWURQJ[12]

9ӟLL s ĈLӋQFҧPWӵWKkQ

L m /jÿLӋQFҧPWѭѫQJKӛ

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9ӟLS, Q OjFiFPDWUұQELӃQÿәLU p , I p JLiWUӏSKDU m , I m OjJLiWUӏSKѭѫQJWKӭFÿӝFOұS 0DWUұQS FӫD SKpSELӃQÿәLÿѭӧFFKREӣL.

3KpSELӃQÿәLClarke ELӃQÿәLWtQKLӋXEDSKDWKjQKFiFSKѭѫQJWKӭFÿӝFOұSWK{QJTXD mDWUұQFӫDSKpSELӃQÿәL

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W Đ ã ă á â ạ ¦ Ӣÿk\KӋVӕFRJLmQ vjKӋVӕFKX\ӇQGӏFKFӫD4.8ÿѭӧFWKD\WKӃEҵQJG0 mNĲ0d0 m, m YjQOjFiFVӕQJX\rQ

%LӃQÿәL:DYHOHWUӡLUҥFVӁSKkQJLҧLWtQKLӋXÿҫXYjRWKjQKFiFKӋVӕ[ҩS[Ӎ (approximationYjKӋVӕFKi WLӃWdetailEұF [14]+ӋVӕ[ҩS[ӍEұFVӁOҥLÿѭӧF[Hm OjWtQKLӋXÿҫXYjRÿѭӧF SKkQWKjQKFiFKӋVӕ[ҩS[ӍYjFKLWLӃWEұFYjFӭWKӃWLӃS WөF+ӋVӕFKLWLӃWWҥLFiFEұFÿѭӧFJӑLOjKӋVӕELӃQÿәL:DYHOHW:DYHOHW7UDQVIRUP Coefficients ± WTC)

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Hình 4.3: &ҩXWU~FFiFEѭӟFOLrQWLӃSSKkQWtFKPӝWWtQKLӋXEDQÿҫX

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HVTH: Võ Sዣ Danh 28 Hình 4.5: ӃWTXҧSKkQWtFKWtQKLӋXWXҫQKRjQWKHRKӑ:DYHOHW'DXEHFKLHVEұF

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Hình 4.7&ҩXWU~FKӋWKӕQJP{SKӓQJ

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HVTH: Võ Sዣ Danh 34 *LҧVӱFyQJҳQPҥFKSKDFKҥPÿҩWӣNKRҧQJFiFK.PWtQKWӯÿҫXÿѭӡQJ

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Vӎ TRÍ SӴ CӔ

TӘNG QUAN Vӄ RELAY SEL

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Tiêu đề	Định vị sự cố trên đường dây tải điện sử dụng phương pháp sóng chạy
Tác giả	Võ Sỹ Danh
Người hướng dẫn	PGS.TS Nguyễn Văn Liêm
Trường học	Đại học Quốc gia Tp. HCM
Chuyên ngành	Kỹ thuật điện
Thể loại	Luận văn thạc sĩ
Năm xuất bản	2011
Thành phố	Tp. Hồ Chí Minh

Định dạng
Số trang	88
Dung lượng	1,74 MB