State Grid Corporation of China

State Grid Anhui Electric Power Research Institute

State Grid Corporation of China (sgcc)

Suzhou Hd Electric Co., Ltd.

Anhui Electric Power Research Institute

State Power Economic Research Institute

Dengfeng Cheng

Wei Li

Rui Liu

Yi Guo

Jiaqing Zhang

Yubiao Huang

Fengju Shang

Yu Tian

Liufang Wang

Jia Xie

Sha Luo

Yifu Zhou

Minghao Fan

Yanguo Ke

Yong Huang

Jing Tan

Xiaodong Zhang

Pengcheng Yang

Shengli Song

Zhong Fu

Wen Su

Cuicui Wang

Wenhui Tong

Jingjing Dong

Yongkang Huang

Zinian Chen

Daowen Yang

Jiantao Ye

Disclosed are a fire extinguishing system and method for an ultra-high voltage (UHV) converter station, and a UHV converter station. The fire extinguishing system includes a spray fire extinguishing system and a fire monitor-based fire extinguishing system, where the spray fire extinguishing system includes a first fire pipe and a spray pipe; the fire monitor-based fire extinguishing system includes a second fire pipe and a fire monitor; one fire monitor is disposed right above a firewall on both sides of each converter transformer in the UHV converter station, and each fire monitor is connected to one second fire pipe; a spray pipe is disposed on the firewall on both sides of each converter transformer; and the fire monitor corresponding to each converter transformer, and an outlet of the spray pipe connected to the first fire pipe corresponding to each converter transformer face the converter transformer.

Fire extinguishing system and method for ultra-high voltage (UHV) converter station, and UHV converter station

The present disclosure provides an air mixer for a compressed air foam (CAF) fire-extinguishing system. A foam concentrate and compressed air are respectively transported by a liquid inlet pipe and an air inlet pipe. When the compressed air and the foam concentrate enter a straight pipe through a first tapered pipe, they reach an outlet end of the first tapered pipe through a path narrowing due to different cross-section diameters at two ends of the first tapered pipe, and there is a compression process. Under an action of a high-pressure airflow, the foam concentrate is fully mixed. The mixed foam concentrate reaches a porous plate of the straight pipe and can be mixed secondarily. When the foam concentrate is discharged by a second tapered pipe, a flow path widens and there is a release process.

Air mixer for compressed air foam fire-extinguishing system and fire-extinguishing system

An operation control method suitable for a fire extinguishing system of an extra-high voltage converter station is provided. The method includes: after an upper computer control system receives a sound-light alarm signal, an alarm position signal, and a switch position dividing signal, starting a spray range prediction analysis subsystem for a fixed fire monitor; determining, by the spray range prediction analysis subsystem for the fixed fire monitor based on an external wind direction and an external wind speed, whether a range of a fire monitor effectively covers an entire area of a converter transformer; and if yes, automatically presetting a first fire monitor to which a first compressed air foam generation subsystem belongs and a second fire monitor to which a second compressed air foam generation subsystem belongs; or if no, replacing a fire monitor with a mobile fire-fighting robot to extinguish a fire.

Operation control method suitable for fire extinguishing system of extra-high voltage converter station

A power frequency parameter simulation system for a power transmission line and a control method thereof, the system includes a simulation main circuit (), an interference power supply () and a procedure controller (). In the system, a power frequency parameter of a 10 to 100 kilometers of 500 kV power transmission line is simulated in a lumped parameter manner; and the control method includes the following steps of: a step to detect the automatically zeroing during starting up, a step to control the reduction of the length of a simulation line and a step to control a simulation interference voltage. A long-distance power transmission line is realized to be moved into a room and be tested by means of the power frequency parameter test system, so the various inconveniences of on-site measurement are avoided.

Power frequency parameter simulation system for a power transmission line and control method thereof

Growing community of inventors

Hefei, China

Dengfeng Cheng