title: ÐÐ¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð´ÑÐ³Ð¾Ð³Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° Ð²ÑÑÐ¾ÐºÐ¾Ð²Ð¾Ð»ÑÑÐ½Ð¾Ð³Ð¾ ÑÐ»ÐµÐ³Ð°Ð·Ð¾Ð²Ð¾Ð³Ð¾ Ð²ÑÐºÐ»ÑÑÐ°ÑÐµÐ»Ñ ÐÐÐ¢-220 Ð½Ð° 220 ÐºÐ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Modernization of the Arc-Extinguishing Device Design of the High-Voltage SF6 Circuit Breaker VGT-220 at 220 kV
Creators: name: ÐÐ»Ð¸Ð¼ÐµÐ½ÑÐ¸Ð¹, ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÐ
Ð½ÑÐ»Ð¸ ÑÐ¾ÐºÐ°
ÐÐÐ¢-220
ÐÐ£
ÐÐ
ÐÐÐ
high voltage curcuit breaker
zeros of the current
VGT-220
arc extinguishing device
short circuit
transient recovery voltage

description: ÐÐ°Ð½Ð½Ð°Ñ ÐÐÐ  Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¼Ð¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð²ÑÑÐ¾ÐºÐ¾Ð²Ð¾Ð»ÑÑÐ½Ð¾Ð³Ð¾ ÑÐ»ÐµÐ³Ð°Ð·Ð¾Ð²Ð¾Ð³Ð¾ Ð²ÑÐºÐ»ÑÑÐ°ÑÐµÐ»Ñ ÐÐÐ¢-220. Ð Ð¸Ð¼ÐµÐ½Ð½Ð¾ Ð°Ð½Ð°Ð»Ð¸Ð·Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð² Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ Ð¾ÑÐºÐ»ÑÑÐ°ÑÑÐµÐ¹ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ ÐÐ. ÐÐ°Ð´Ð°ÑÐ¸, Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð½ÑÐµ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÐ½Ð°Ð»Ð¸Ð· Ð¾Ð±ÑÐ¸Ñ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð², ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð¸ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ð¹ ÐÐÐ¢-220. 2. Ð Ð°ÑÑÐµÑ Ð¸ ÐºÐ¾Ð½ÑÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÐÐÐ¢-220. 3. ÐÐ½Ð°Ð»Ð¸Ð· ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð² Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ Ð¾ÑÐºÐ»ÑÑÐ°ÑÑÐµÐ¹ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸. 4. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ ÑÐµÑÐ¸ (Ð»Ð¸Ð½Ð¸Ð¸) Ñ ÐÐ. 5. ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÐÐ£ ÐÐÐ¢-220 Ð² OpenFOAM. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ ÑÐ°ÑÑÐµÑ Ð¸ ÐºÐ¾Ð½ÑÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÐÐÐ¢-220. ÐÐ»Ñ Ð½Ð°ÑÐ°Ð»Ð° Ð¸ÑÑÐ»ÐµÐ´ÑÐµÑÑÑ Ð´ÑÐ³Ð¾Ð³Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾: â¢ Ð Ð°ÑÑÐµÑ Ð´Ð¸Ð°Ð¼ÐµÑÑÐ° ÑÐ¾Ð¿Ð»Ð° ÐÐ£ â¢ Ð Ð°ÑÑÐµÑ Ð³Ð°Ð·Ð¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð² ÑÐ¾Ð¿Ð»Ð¾Ð²Ð¾Ð¼ ÐºÐ°Ð½Ð°Ð»Ðµ â¢ Ð Ð°ÑÑÐµÑ Ð³ÐµÐ¾Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ°Ð·Ð¼ÐµÑÐ¾Ð² ÐÐ£ â¢ ÐÐ½Ð°Ð»Ð¸Ð· ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº ÐÐ£ ÐÑÐ¸ÑÐ¾Ð´Ð¸Ð¼ Ðº Ð²ÑÐ²Ð¾Ð´Ñ, ÑÑÐ¾ Ð¿Ð¾ÑÑÐµÐ½Ñ Ð¸Ð¼ÐµÐµÑ Ð´Ð¸Ð°Ð¼ÐµÑÑ 200 Ð¼Ð¼. ÐÐ°ÑÐµÐ¼ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÑÑ ÑÐ°ÑÑÐµÑ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°, ÑÐ¾ÑÑÐ¾ÑÑÐ¸Ð¹ Ð¸Ð· Ð°Ð½Ð°Ð»Ð¸Ð·Ð¾Ð² Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² ÐºÐ»Ð°Ð¿Ð°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¸ ÐºÐ¾Ð¾ÑÐ´Ð¸Ð½Ð°ÑÐ¸Ð¸ Ð²Ð½ÐµÑÐ½ÐµÐ¹ Ð¸Ð·Ð¾Ð»ÑÑÐ¸Ð¸. ÐÐ¾ÑÐ¾Ð¼ Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÑÑÑÑÑ ÑÐ¿Ð¾ÑÐ¾Ð±Ñ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ Ð¾ÑÐºÐ»ÑÑÐ°ÑÑÐµÐ¹ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸, Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÐ¾Ð½ÑÐ°ÐºÑÐ½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÑÑÑ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ðµ ÑÐµÑÐ¸ (Ð»Ð¸Ð½Ð¸Ð¸) Ñ ÐÐ. Ð Ð¿Ð¾ÑÐ»ÐµÐ´Ð½ÐµÐ¼ ÑÐ°ÑÑÑÐ¸ÑÑÐ²Ð°ÐµÑÑÑ ÐÐÐ Ð² ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÐ¸ÑÑÐ°ÑÐ¸ÑÑ. Ð¢Ð°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÐÐ£ ÐÐÐ¢-220 Ð² ÑÑÐµÐ´Ðµ OpenFOAM. Ð Ð¿ÐµÑÐ²ÑÑ Ð¾ÑÐµÑÐµÐ´Ñ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÑÑÑ Ð³ÐµÐ¾Ð¼ÐµÑÑÐ¸Ñ Ð¿ÑÐ¾ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐ¸. ÐÐ°ÑÐµÐ¼ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÑÑ ÑÐ°Ð¼Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÐ¹ ÐºÐ¾Ð´, ÑÑÑÐ¾Ð¸ÑÑÑ Ð³ÑÐ°ÑÐ¸Ðº Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¿Ð¾Ð»ÑÑÐ°ÐµÑÑÑ Ð¸ÑÐ¾Ð³Ð¾Ð²Ð°Ñ Ð³ÐµÐ¾Ð¼ÐµÑÑÐ¸Ñ ÐÐ£ ÐÐ. ÐÐ¼ÐµÐµÑÑÑ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² Ð¸ ÑÐ²Ð»ÐµÐ½Ð¸Ð¹, Ð½Ð°Ð±Ð»ÑÐ´Ð°ÐµÐ¼ÑÑ Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ñ. ÐÐ¾Ð»Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ ÑÐ°ÑÑÐµÑ ÐÐÐ¢-220 Ð¿Ð¾ÐºÐ°Ð·Ð°Ð»Ð¸ ÑÐµÐ»ÐµÑÐ¾Ð¾Ð±ÑÐ°Ð·Ð½Ð¾ÑÑÑ ÐµÐ³Ð¾ Ð¼Ð¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ð¸. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð² Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑ Ð½Ð°Ñ Ðº ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ, ÑÑÐ¾ Ð¿Ð¾ÑÑÐµÐ½Ñ ÐÐ£ Ð´Ð¾Ð»Ð¶ÐµÐ½ Ð¸Ð¼ÐµÑÑ Ð´Ð¸Ð°Ð¼ÐµÑÑ 200 Ð¼Ð¼, Ð¿Ð¾ÑÐºÐ¾Ð»ÑÐºÑ Ð¾Ð½ Ð¾Ð±ÐµÑÐ¿ÐµÑÐ¸Ð²Ð°ÐµÑ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÑ ÑÐºÐ¾ÑÐ¾ÑÑÑ Ð¸ ÑÑÐµÐ´Ð½ÐµÐµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ Ð¿ÐµÑÐµÐ¿Ð°Ð´Ð° Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ. Ð¢Ð°ÐºÐ¶Ðµ Ð´Ð»ÑÂ  Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ Ð¾ÑÐºÐ»ÑÑÐ°ÑÑÐµÐ¹ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ ÐÐ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»ÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐ½ÑÐ¸ÑÑÑÑÐµÐ¹ ÐµÐ¼ÐºÐ¾ÑÑÐ¸, ÐºÐ¾ÑÐ¾ÑÐ°Ñ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÐµÑ ÑÐ½Ð¸Ð·Ð¸ÑÑ ÑÐºÐ¾ÑÐ¾ÑÑÑ Ð½Ð°ÑÐ°ÑÑÐ°Ð½Ð¸Ñ ÐÐÐ Ð½Ð° 30% Ð¿ÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ð¸ ÐºÐ¾Ð½Ð´ÐµÐ½ÑÐ°ÑÐ¾ÑÐ°. ÐÐ°Ðº Ð¸ÑÐ¾Ð³, Ð¾ÑÐºÐ»ÑÑÐ°ÑÑÑÑ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ Ð¼Ð¾Ð¶Ð½Ð¾ Ð¿Ð¾Ð²ÑÑÐ¸ÑÑ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑÑÐ½ÑÐ¸ÑÑÑÑÐµÐ¹ ÐµÐ¼ÐºÐ¾ÑÑÐ¸, Ð° ÑÐ»ÑÑÑÐ¸ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ñ ÐÐ£ Ð¿ÑÑÐµÐ¼ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð´Ð¸Ð°Ð¼ÐµÑÑÐ° Ð¿Ð¾ÑÑÐ½Ñ.
description: This graduation thesis is dedicated to the modernization of the design of the high-voltage SF6 circuit breaker VGT-220. Specifically, it analyzes methods for enhancing the breaking capacity of high-voltage circuit breakers. The tasks accomplished during the research include: 1. Analysis of the general parameters, characteristics, and requirements of the VGT-220. 2. Calculation and design of the VGT-220. 3. Analysis of methods to increase breaking capacity. 4. Investigation of the interaction between the network (line) and the high-voltage circuit breaker. 5. Modeling of the arc-extinguishing device of the VGT-220 in OpenFOAM. The work involves the calculation and design of the VGT-220. Initially, the arc-extinguishing device is studied: â¢ Calculation of the nozzle diameter of the arc-extinguishing device â¢ Calculation of gas-dynamic processes in the nozzle channel â¢ Calculation of the geometric dimensions of the arc-extinguishing device â¢ Analysis of the characteristics of the arc-extinguishing device We conclude that the piston has a diameter of 200 mm. Then, the drive device is calculated, which includes analyses of the main parameters of the valve control system and the coordination of external insulation. Following this, methods to increase breaking capacity are analyzed, including an analysis of the contact system and an investigation of the interaction between the network (line) and high-voltage circuit breakers. Finally, the transient recovery voltage is calculated in various scenarios. Furthermore, the modeling of the arc-extinguishing device VGT-220 is conducted in the OpenFOAM environment. Initially, the geometry of the flow section is studied. Then, the modeling itself is carried out using software code, and a pressure graph is constructed. As a result, the final geometry of the arc-extinguishing device ofÂ  the high-voltage circuit breakers is obtained. The obtained results correspond to the phenomena observed in experiments. The comprehensive analysis and calculation of the VGT-220 have demonstrated the feasibility of its modernization. The research in this thesis leads to the conclusion that the piston of the arc-extinguishing device should have a diameter of 200 mm, as it ensures the necessary speed and average pressure drop. Additionally, to enhance the breaking capacity of high-voltage circuit breakers, the use of a shunt capacitor was analyzed, which allows reducing the rate of rise of the transient recovery voltage by 30% when using a capacitor. In conclusion, breaking capacity can be increased by using a shunt capacitor, and the design of the arc-extinguishing device can be improved by changing the piston diameter.