Big room 500 kv series compensation station control and protection

Abstract: the large room 500 kv series compensation station control and protection of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: the north China power grid for the first time in the domestic power grid transmission line with series compensation technology, set series compensation equipment. Big room 500 kv series compensation station was introduced in detail the configuration of the control and protection system of the whole system, and the corresponding components and control relationships. Cast. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a big room 500 kv series compensation station control and protection of the article details. North China power grid for the first time in the domestic power grid transmission line with series compensation technology, set series compensation equipment. Big room 500 kv series compensation station was introduced in detail the configuration of the control and protection system of the whole system, and the corresponding components and control relationships. Since put into operation, the basic running well, effectively ensure the safe and stable operation of the power grid, to other grid series compensation technology provides the experience. 0 introduction supergrid power system with series compensation equipment, technology is quite mature abroad, but is less common in China. By the calculation, in the northeast & ndash; Networking, north China moved was 500 kv line & other; 0' Trend, the large room 500 kv line stability limit mva drop from 1579 to 1442 mva, and central China network, large room a 7% drop in the line stability limit; In order to overcome due to the negative impact of the network of north China power grid stability, large room wiring series compensation capacitor. North China electric power group company on the one hand, research personnel sent abroad grid series compensation system in the planning, construction, operation, as well as the equipment manufacture and operation performance of the various manufacturers; On the other hand layout research fixed series compensation and adjustable series compensation technology ( Including the TCSC) , at the beginning of the 500 kv line construction big room, already planning the possibility of a set series compensation, send out in togtoh power plant projects, arrangement of design units and scientific research departments in advance to be prepared for a lot of technology, the expert argumentation and review meeting for many times, think is in the middle of the line set series capacitor zui mature, reliable, simple technology, can fully meet the requirements of power system stability. In addition, the project construction period is short, and the north China and northeast power grid to realize network synchronization when put into production, suggest using mature and reliable technology and equipment, to ensure the project construction schedule. Arguably, the use of fixed series compensation technology. Domestic first series compensation project is in the activation of plant sent project, grand in at substation, set series compensation equipment, adopting Siemens equipment. The second is the big room 500 kv series compensation project, north China power grid for the first time use, set up in 500 kv line series compensation equipment is used for the first time in China. The global action, evaluation, a complete set of equipment with ABB products. One big room 500 kv series compensation station series equipment large room 500 kv series compensation station will be located in yu county, zhangjiakou is 127 kilometers from datong power plant, 161 km away from well change, each line set up a set of series compensation device, series compensation device rated current is 2100 a, each phase rated impedance is 28. 4 n, each group of three phase rated capacity of 375. 3 ( The MAO value) 。 Series compensation station for the unmanned and manned station, by north China power network scheduling, scheduling by zhangjiakou power supply company in remote control, monitoring station is set in south zhangzhuang 110 kv substation, operation and maintenance by zhangjiakou power supply company. Series compensation system by the bypass series isolating switch, isolating switch, capacitor Banks and damping loop, clearance, zinc oxide lightning arrester, the bypass switch, a fiber optic cable equipment and computer control system, remote transmission equipment, communication system, monitoring system and remote control system, etc. As shown in figure 1. 2 series compensation station protection equipment series compensation station configuration of each part two sets of identical protection equipment, redundant set, that is, A set of protection system ( MACH2 ( 一) ） Protection systems (a and B MACH2 ( B） ） 。 All the protection function performed by MACH2. Protection system of the acquisition by the series compensation platform of optical current transformer ( 'TA') And optical system to complete. Each TA has two independent measurement channel to transmit information protection system A and system B. Each system includes the protection equipment. 1 capacitor unbalance protection ( U1) Capacitor unbalance protection is through the connection of the capacitor bridge current measurements to monitor the running status of capacitor Banks. At the same time, the capacitor is blown fuse and condenser bushing flashover caused by unbalance current of capacitor Banks were also monitored. Protect three time setting and three paragraphs: alarm, low fixed value bypass, high fixed value bypass. Alarm and low fixed value bypass and unbalance current and capacitor current ( Line current) The relevant. High valued only related to the unbalance current circuit. Alarm and low fixed value is locked when bypass line in low current. In low fixed value bypass and high valued bypass activity are * atresia. 2 from the clouds fault protection ( ZL) If lightning arrester cell damage, the line current will flow through the arrester. Lightning arrester fault protection is the current through the arrester monitoring. Lightning arrester failure protection action, * atresia.

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