Analysis of Mobile Diesel Generator Operation to cope with Extended Loss of all AC Power in Nuclear Power Plant

2018 ◽  
Author(s):  
Ji-Kyung Park ◽  
Jae-Do Lee ◽  
Hong-Seok Jang ◽  
Hyun-Shin Park
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Diesel Generator ◽  
Generator Operation ◽  
Ac Power

Diesel Generator Equipment Diagnostics of Nuclear Power Plant Using Deterministic and Stochastic Methods

2016 ◽  
Vol 20 (3) ◽  
pp. 74-79
Author(s):  
E.A. Abidova ◽  
L.S. Hegay ◽  
A.V. Chernov ◽  
V.A. Bulava ◽  
O.Yu. Pugachyova ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Stochastic Methods ◽  
Diesel Generator

Dynamic Simulation Studies of Performed Additional Tests During FAT for Emergency Diesel Generators at Nuclear Power Plant

2016 ◽  
Author(s):  
Salah K. Kanaan ◽  
Amer Omanovic
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Electric Circuit ◽  
Diesel Generator ◽  
Safety Regulations ◽  
Auxiliary Power ◽  
Current Voltage ◽  
Measurement Results ◽  
Generator Sets

In 2004, a decision was made to perform a modernization and a new power uprate of unit 2 at Oskarshamn nuclear power plant in Sweden. Among the most important reasons for this decision were new safety regulations from Swedish Radiation Safety Authority and ageing of important components. A project was established and became the largest nuclear power modernization in the world. The modernization led to the need of analysing the auxiliary power system to ensure that it could supply the unit after the uprate, given tolerances on current, voltage and frequency. During the process of developing models for the diesel generator sets, it turned out that the suppliers could not deliver enough satisfactory material for modelling the diesel engines, the speed controllers and the magnetization systems. Therefore, Oskarshamn nuclear power plant with the help of the manufacturers of the diesel generator sets carried out additional measurements in order to collect data for modelling. Based on electric circuit diagrams provided by the manufacturers, block diagrams of the magnetization systems were made. For the speed controllers, no information was available at all so it was assumed that the controller was of PI-type. The parameters of the magnetization systems and the speed controllers were then tuned using the measurement results. Finally, a comparison between simulated results and the measurement results were made, showing good agreement. This is especially true in the most commonly used operating interval of the diesel generator sets.

The Necessity of Independent Configuration of the DC Power Supply System Used for Power Supply and Auxiliary Power Supply in Nuclear Power Plant

2018 ◽  
Author(s):  
Zhang Zhichao
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Power System ◽  
Power Supply ◽  
Nuclear Power ◽  
Power Supply System ◽  
Power Source ◽  
Dc Power ◽  
Auxiliary Power ◽  
Ac Power

At present, in the typical design of China’s nuclear power plant, main generation system is connected to the power grid by 500 kV system. 500 kV system as a priority power source, 220kV system as an auxiliary power source. Independent operation of 500kV and 220kV system, improved the reliability of power supply of nuclear power plant. However, the DC 220V power system used to control the 500kV and 220kV system in the switch station of partial nuclear power project is not independently configured, and the design form of one set of DC system is used in the transformer station. In recent years, there are many accidents that AC power enters into the DC power system, resulted in the loss of power source in the transformer station. The loss of external power source in the whole plant is very significant. In this paper, the influence of AC power entering into DC power system on relay protection device is analyzed, the measures to prevent the AC power into DC power system are discussed, the necessity of independent configuration of DC control power system for the 500kV priority power system and 220kV auxiliary power supply system is analyzed.

scholarly journals A Method of Parsing Based on Improving the Electricity Behavior and Regulating Excitation System of the Diesel Generating Set in the Nuclear Power Plant

2017 ◽  
Vol 1 (1) ◽  
pp. 32
Author(s):  
Meng Wang
Keyword(s):  
Neural Network ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Element Model ◽  
Test Plan ◽  
Diesel Generator ◽  
Generator Unit ◽  
Neural Network Theory ◽  
Matter Element Model

This paper introduces an applicable test plan for emergency diesel generator in nuclear power plant. It advances improvement approaches with problems found during field commissioning test and its trouble-shooting processes. The method is based on the integration of complementary through, the extension theory of matter-element model and neural network theory combine to overcome a neural network to learn shelters, and other defects. The purpose of this paper is to provide the better running and commissioning experience for the similar emergency generator unit.

Sign in / Sign up

Export Citation Format

Share Document