TKDG Air-Core Reactor Empowers 12-Pulse Rectifier System: Harmonic Mitigation Solution for Rail Transit Traction Power Supply TKDG Air-Core Reactor Da Yawan 12-Pulse Rectifier System: Harmonic Mitigation Solution don Rail Transit Traction Power Supply

18yrs 500-1000 employees 108000m²+m² US$150,000,000+ China

Ⅰ. Ƙarfi na Amfani
A lokacin da mafi girman 12-pulse rectifier units ta yi a cikin substation daga hankali na subway, zai iya haɗa harmonics mai sauƙi kamar 11th da 13th. Wannan zai taimaka wajen ɗaukan ƙarfafin tsari na voltage na contact line (ta bayyana a 8.5%), wanda yake taimaka wajen ƙara alaƙar da ƙarfin jirgin ruwa da kuma ƙarfin cin kwaikwayo.

II. Ƙarfi na Gaba-gaban Bincike
Yara da TKDG-type outdoor epoxy-cast air-core reactors don samun ƙarfafin absorption da optimization na system daidai.

III. Tushen Mai Sauƙi

Design na Reactor Mai Sauƙi

Vertical Stacked Winding Structure: Design na spatial layout mai sauƙi ya ƙara tsawon space, amma yana taimaka wajen ƙara inganci da inductance accuracy, inda yana zaɓe abubuwan substation mai kyau.
120°C Continuous Operation Capability: Proses na vacuum casting da ake amfani da ita a kan epoxy resin ya ba da insulation mai sauƙi, wanda yake taimaka wajen yi ƙarfin daɗi a lokacin da ƙaramin hawa masu sauri. Safin bincike na 20 shekaru.

Mitigation na System-Level Harmonic

24-Pulse Rectification Collaborative Mitigation: Reactors da rectifier units sun fi shiga ƙarfin mitiga mai sauƙi:
▸ 12-pulse rectification → Yana haɗa harmonics 11th/13th/23rd/25th.
▸ Upgrade zuwa 24-pulse rectification → Yana ƙara harmonics 23rd/25th.
▸ TKDG Reactor → Yana haɗa harmonics 11th/13th mai sauƙi.

Key Performance Parameters

Indicator	Pre-Mitigation	Post-Mitigation	Improvement Rate
Contact Line Voltage THD	8.5%	2.1%	75.3%
Characteristic Harmonic Content Rate	>5%	<0.8%	>84%
Continuous Operation Temp. Rise (°C)	-	≤70 K	-

IV. Fa'idota na Implementation

Enhanced Power Supply Safety: Voltage THD ta ci gaba da/ko ci gaba da Standard National GB/T 14549-93 "Power Quality - Harmonics in Public Supply Network" (≤4%), wanda yake ƙara alaƙar da ƙarfin malamai na cin kwaikwayo.
Energy Efficiency Optimization: Harmonics currents da suka ƙara ƙara ƙasashen line. Energy efficiency ta ƙarfin daɗi a 3%-5%.
Space and Cost Advantages:
▸ Tsawon vertical structure ta ƙara 30% installation area.
▸ Design na natural cooling ta ƙara 45% operation da maintenance costs compared to forced-air cooling solutions.

V. Engineering Validation

Harmonic current 11th ta ƙara daga 312 A zuwa 58 A.
Harmonic current 13th ta ƙara daga 285 A zuwa 62 A.
Failure rate of capacitor banks da relay protection equipment ta ƙara zuwa zero.

Summary of Solution Advantages: Ya samu ƙaramin daɗi a kan ƙarfin daɗi na 12-pulse system zuwa ƙarfin daɗi na 24-pulse system, tare da ƙara harmonics mai sauƙi, tare da ƙara ƙarfin expansion retrofits.

07/25/2025

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