scholarly journals Load Rejection Performance Analysis of HPR1000 NPP in the UK Grid

2021 ◽  
Vol 2087 (1) ◽  
pp. 012067
Author(s):  
Qingliang Zhang ◽  
Hui Sun ◽  
Changchun Zhai ◽  
Xiaowei Chen
Keyword(s):  
Simulation Model ◽  
Full Range ◽  
Electrical Power ◽  
Electrical System ◽  
Electrical Power System ◽  
Turbine Generator ◽  
Main Work ◽  
Simulink Simulation ◽  
The Uk ◽  
Grid Operation

Abstract In this study, the full range of load rejection performance of HPR1000 NPP is evaluated against the UK Grid Code considering the primary loop, the secondary loop, and the electrical system. The main work of this paper includes three parts. Firstly, the UK grid operational requirements are introduced including frequency requirements, voltage requirements, power requirements, etc. The criteria and specific numerical requirements to be followed in the simulated steady-state and transient states are listed, and the simulation results should meet the grid operation requirements; Secondly, the Simulink simulation model of the whole system is built in detail, and the simulation model can be divided into NSSS, turbine generator, and electrical power system sections. The component modules of each part and their corresponding connection relationships of each part are shown and presented; Finally, a load rejection simulation is performed to demonstrate that the unit has the ability to regulate its active power output and frequency as required in the Grid Code.

scholarly journals Optimization technique for energy mass characteristics of the EPS of a geostationary spacecraft

2021 ◽  
Vol 24 (1) ◽  
pp. 83-90
Author(s):  
R. V. Kozlov ◽  
◽  
V. G. Bukreev ◽  
A. T. Lelekov ◽  
◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Simulation Model ◽  
Power Converters ◽  
Optimization Technique ◽  
Electrical Power ◽  
Specific Power ◽  
Positive Energy ◽  
Resonant Converters ◽  
Electrical Power System ◽  
Efficiency Estimation

This article determines a methodology to maximize a specific power of the electrical power system of a geostationary spacecraft, using the EPS simulation model. A typical (for GEO spacecraft) fully-regulated EPS structure is considered. The advantages of using the full bridge quasi-resonant converters with galvanic isolation are considered. The results of the energy efficiency estimation of power converters at various ranges of input voltages, as well as the criteria and conditions for calculating the positive energy budget of a GEO spacecraft are presented. The application of the EPS simulation model is shown and the results of optimization of the proposed EPS energy and mass characteristics for 6 and 13 kW payloads are described

Research on Synthesis Control Technology for Aircraft Electrical System

2012 ◽  
Vol 203 ◽  
pp. 202-206
Author(s):  
Hang Xu ◽  
Tao Zou
Keyword(s):  
Control System ◽  
Power Supply ◽  
Power Supply System ◽  
Fault Tolerant ◽  
Electrical Power ◽  
Supply System ◽  
Electromechanical System ◽  
Electrical System ◽  
Electrical Power System ◽  
Aircraft Flight

The airborne electromechanical system is essential to ensure the aircraft flight and it is most complex system in the aircraft, the aircraft intelligent power supply system and the aircraft electrical system synthesis control is the basis of airborne integrated electromechanical system. The paper gives up the hardware and software compositions and operation features of the aircraft electrical synthesis control system under based on the current situation of science and technology. It expounds the function and structure of PSP, ELMC and RT, the demands of BIT technique and fault tolerant design of electrical power system. It refers design scheme of electrical synthesis control system according to developing trends of aircraft electrical system.

Research of Intelligent Automotive Alternator Control System to Reduce the Fuel Consumption

2013 ◽  
Vol 321-324 ◽  
pp. 1578-1582
Author(s):  
Bing Li ◽  
Dian Ge Yang ◽  
Wei Wei Kong ◽  
Xiao Min Lian
Keyword(s):  
Control System ◽  
Power System ◽  
Fuel Consumption ◽  
Electrical Power ◽  
State Of Charge ◽  
Electrical System ◽  
Electrical Power System ◽  
Energy Regeneration ◽  
Automotive Alternator

The amount and the power of the electrical appliances on cars are increasing, and the fuel consumption produced by the electrical system is getting larger. To design an automotive electrical power system with higher efficiency is a very practical requirement. In this paper, we proposed an automotive intelligent alternator control system. In this system, we divided the battery states to different partitions by state of charge, and designed an intelligent alternator control system to work in different mode according to the battery partition and the vehicle state. With this system we can realize the braking energy regeneration for traditional cars and reduced the fuel consumption. We carried out the experiment with a car, and the results indicated that with this system, the fuel consumption can be reduced by about 2-3%.

scholarly journals Modelling and simulation of house load operation of HPR1000 NPP

2021 ◽  
Vol 2087 (1) ◽  
pp. 012010
Author(s):  
Xiaowei Chen ◽  
Hui Sun ◽  
Changchun Zhai ◽  
Qingliang Zhang
Keyword(s):  
Power Systems ◽  
Nuclear Power ◽  
Electrical Power ◽  
Simulation Modelling ◽  
Electrical Power System ◽  
Electrical Power Systems ◽  
Acceptance Criteria ◽  
Primary Loop ◽  
Main Work ◽  
Secondary Loop

Abstract In this paper, the house load operation of the unit is evaluated, taking the third-generation Nuclear Power Plant (NPP) HPR1000 as an example, considering the primary loop, the secondary loop and the entire on-site electrical power systems. The main work of this study is as following: Firstly, acceptance criteria and specific numerical requirements are set out; the simulation result should meet the relevant criteria. Secondly, the Simulink simulation model of the entire system is built in detail, which can be divided into primary loop, secondary loop and on-site electrical power system parts, with emphasis on the simulation modelling of the turbine generator unit. The component models of each part and their corresponding connection relationships of each part are shown and given. Finally, a house load operation simulation is performed, and the result is compared with the acceptance criteria to verify that whether the generator has the ability to transfer to house load operation as designed.

scholarly journals Protection and Specification of Clutches to be Used With Gas Turbine Generators

1980 ◽  
Author(s):  
K. H. Burns ◽  
R. P. Kearsey
Keyword(s):  
Gas Turbine ◽  
Electrical Power ◽  
Use Of Self ◽  
Electrical System ◽  
Spinning Reserve ◽  
Turbine Generator ◽  
Power Generators ◽  
Turbine Generators ◽  
Power Turbine ◽  
Electrical Generator

The use of self-actuating clutches in gas tubine driven electrical power generators is examined, in relation to operation of the clutch during fault conditions. Clutches are employed in the main shaft between the power turbine and the electrical generator, to enable the unit to operate as a synchronous compensator. Five particular fault conditions are identified which could cause overstressing of the clutch. Protection is not universally provided to protect the clutch under all five conditions, and methods of providing protection are suggested. Analysis of the fault conditions is developed to identify the differential acceleration requirement for the clutch. The analysis is extended to demonstrate the limited capability of a gas turbine generator, when operating as a synchronous compensator, to provide spinning reserve capacity for an electrical system.

scholarly journals A new T-circuit model of wind turbine generator for power system steady state studies

2021 ◽  
Vol 10 (2) ◽  
pp. 550-558
Author(s):  
Rudy Gianto ◽  
Kho Hie Khwee
Keyword(s):  
Steady State ◽  
Power System ◽  
Electrical Power ◽  
Mathematical Formulation ◽  
Load Flow ◽  
Induction Generator ◽  
Electrical Power System ◽  
Turbine Generator ◽  
New Model ◽  
Mathematical Operations

Modeling of wind power plant (WPP) is a crucial issue in power system studies. In this paper, a new model of WPP for steady state (i.e. load flow) studies is proposed. Similar to the previous T-circuit based models, it is also developed based on equivalent T-circuit of the WPP induction generator. However, unlike in the previous models, the mathematical formulation of the new model is shorter and less complicated. Moreover, the derivation of the model in the present work is also much simpler. Only minimal mathematical operations are required in the process. Furthermore, the rotor voltage value of the WPP induction generator is readily available as an output of the proposed new model. This rotor voltage value can be used as a basis to calculate the induction generator slip. Validity of the new method is tested on a representative 9-bus electrical power system installed with WPP. Comparative studies between the proposed method (new model) and other method (previous model) are also presented

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