Research on Application of Low Voltage Ride Through Technology of Auxiliary Equipment Inverter of Thermal Power Plant in Power Grid

Author(s):  
Zhixuan Zhang ◽  
Xinhong You ◽  
Huan Ma ◽  
Kang Zhao ◽  
Ning Zhou
2019 ◽  
Vol 112 ◽  
pp. 02005
Author(s):  
Oleksii Epik ◽  
Vitalii Zubenko

The article contains the first considerations of the problematic of Ukrainian grid balancing issues raised by a rapid increase of RES share in total electricity supply. The provision of balancing electricity with accent on biomass combined heat and power plants (CHP) usage is considered. Three technical concepts are proposed for engaging of existing and planned biomass CHP into balancing operation primary operating in baseload regimes, namely – greenfield biomass thermal power plant (TPP) and CHP working primary in baseload regimes and provide balancing electricity when needed (with and without steam accumulation). It is shown that there are no principle technical limitations for biomass CHP/TPP usage for grid balancing. The levelized cost of electricity (LCOE) of balancing electricity for proposed concepts are calculated and compared with the reference technology proposed by the national grid operator (gas-piston engines and/or gas turbine). According to the calculations performed the LCOE (EUR/MWh) of balancing electricity could be 77-88 EUR/MWh for biomass CHP primary operating in baseload and 216 EUR/MWh for greenfield biomass TPP against 206 EUR/MWh for gas-piston/gas-turbine for applied assumptions, prices and tariffs.


2013 ◽  
Vol 860-863 ◽  
pp. 1436-1440
Author(s):  
Qi Cheng ◽  
Li Zhang ◽  
Yin Jun Wu

In the thermal power plant, as an important auxiliary equipment of turbine, the condenser plays an important role in the normal operation of power plant. At present, the domestic operating unit has a large number of old condenses, which has low efficiency and emerging problems because of the increasing running time. Therefore, the transformation of old condenser becomes an important means to tap the potential of the old unit. In this paper, we transform one 300MW unit condenser with its tube layout, then through the numerical simulation and date analysis of the condenser before and after transformation to explore the possibility of modification.


2012 ◽  
Vol 58 (4) ◽  
pp. 351-356
Author(s):  
Mincho B. Hadjiski ◽  
Lyubka A. Doukovska ◽  
Stefan L. Kojnov

Abstract Present paper considers nonlinear trend analysis for diagnostics and predictive maintenance. The subject is a device from Maritsa East 2 thermal power plant a mill fan. The choice of the given power plant is not occasional. This is the largest thermal power plant on the Balkan Peninsula. Mill fans are main part of the fuel preparation in the coal fired power plants. The possibility to predict eventual damages or wear out without switching off the device is significant for providing faultless and reliable work avoiding the losses caused by planned maintenance. This paper addresses the needs of the Maritsa East 2 Complex aiming to improve the ecological parameters of the electro energy production process.


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