Verification of voltage/frequency requirement for emergency diesel generator in nuclear power plant using dynamic modeling

2014 ◽  
Author(s):  
Jin-Suk Hur ◽  
Myung- Sub Roh
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Dynamic Modeling ◽  
Nuclear Power ◽  
Diesel Generator ◽  
Voltage Frequency

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.

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.

Advancement of Lining Inspection Technology Inside Seawater Piping

2014 ◽  
Author(s):  
Yusuke Kono ◽  
Koji Okimura ◽  
Akio Minamiyama ◽  
Masaki Noda
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Preventive Maintenance ◽  
Nuclear Power ◽  
Visual Inspection ◽  
Diesel Generator ◽  
Initial State ◽  
Detection Technology ◽  
Seawater Corrosion

Seawater piping employed for cooling of emergency diesel generator and various components at Nuclear power plant, are internally lined for protection against seawater corrosion. (Fig. 1) However, the lining materials such as rubber or polyethylene tend to incur peel-off or crack due to aged deterioration occurred by the operation, resulting in corrosion of the piping. (Fig. 2) Internal piping integrity of seawater piping is usually performed by periodic visual inspection. But, for the 4B to 20B pipes it has been a challenge to detect the initial degradation because the inspector cannot get into the pipes. Pinhole detection technology that enables detection of microscopic damages and cracks is available to use as means to detect its initial state of degradation, which seems effective as preventive maintenance of the lining. Such being the case, we are developing Seawater Piping Inside Inspection Equipment applicable to the 4B to 20B sizes of pipes by evolving the conventional pinhole detection technology.

Sign in / Sign up

Export Citation Format

Share Document