50/100/500KW Convenient Silent Diesel Generator Set 120V/400V

Coordinated control of battery energy storage and diesel generator in independent AC microgrid

In the independent AC microgrid system, the coordination control between the diesel generator and the battery energy storage is the key to ensure the stable operation of the system. Based on the fast response characteristic of battery energy storage, a coordinated control method of diesel generator and energy storage battery was proposed. When the diesel generator is used as the main power supply, the auxiliary power control signal is introduced into the traditional droop control of the energy storage system to prevent the system collapse caused by the diesel engine overcurrent for a long time and improve the system stability. Aiming at the short-time power outage problem when the main power supply in the microgrid changes from the energy storage system to the diesel generator or from the diesel generator to the energy storage system, a seamless switching control strategy of the two main power supplies of the diesel generator and the energy storage battery is proposed.

Modeling and operation simulation of Marine Diesel generator Set

The operation process of Marine diesel generator set is an important part of power plant operation. The number of diesel generators operating in parallel determines the capacity of a Marine power station. The stability of parallel operation is closely related to the stability of Marine power station. It is of great significance to establish a mathematical model which can accurately reflect the operation of diesel generator set for operation control, simulation and performance analysis of power station. The study of parallel operation of diesel generator sets involves the establishment of diesel generator model, parallel operation control model and electric load model. Although there are some different modeling methods for diesel generator model, most of them are limited to single model simulation. Taking diesel generator model as the core, the mathematical model of parallel operation of multiple diesel generator sets is established. Taking the "Yu-kun" ship power station as the reference object, the diesel generator model, power load model and parallel operation control system model are established respectively

The basic structure:

The basic structure of diesel generator is composed of diesel engine and generator. The diesel engine drives the generator to generate electricity.

The basic structure of diesel engine: cylinder, piston, cylinder head, inlet valve, exhaust valve, piston pin, connecting rod, crankshaft, bearing and flywheel components. Diesel generator diesel engine is generally single cylinder or multi cylinder four stroke diesel engine, I just talk about the basic principle of the work of single cylinder four stroke diesel engine: diesel engine starting is through manpower or other power to rotate the diesel crankshaft so that the piston in the top closed cylinder for up and down reciproCAT-parts-partsing motion. The piston completes four strokes in motion: the intake stroke, the compression stroke, the combustion and work (expansion) stroke and the exhaust stroke. When the piston moves from up to down, the inlet valve opens, and the fresh air filtered by the air filter enters the cylinder to complete the intake stroke. The piston moves upward from the bottom, the inlet and exhaust doors are closed, the air is compressed, the temperature and pressure increase, complete the compression process. When THE piston is about to reach the top, THE fuel INJECTOR will spray the filtered fuel into the combustion chamber in a mist and mix with the air of high temperature and pressure to burn on its own immediately. The high pressure will push the piston down to work, push the crankshaft to rotate and complete the work stroke. After the work stroke is finished, the piston moves up from the bottom, and the exhaust valve opens the exhaust to complete the exhaust stroke. The crankshaft rotates half a turn for each stroke. After several working cycles, the diesel engine gradually accelerates to work under the inertia of the flywheel.

Since establishment in 1985, Guangdong ALI Testing Equipment Co., Ltd, a wholly-owned subsidiary of GSKA Group has been providing a wide and complete range of products and services to the society. GSKA has now 16 offices, warehouses and service centres in China, with head office loCAT-partsed in Hong Kong. There are more than 100 employees in GSKA Group, and we are expanding into many industries with rapid expanding pace of China.

There are mainly 4 departments in GSKA Group, namely:

1) Construction and Mining equipment

GSKA has been cooperating with many international famous brands in China, such as Ingersoll-rand, Atlas Copco and Liebherr. Our products include concrete batching plants, concrete mixers, hydraulic crawler drills, pneumatic crawler drills, water well drills, air compressors, road compactors, breakers and various other equipment. We are major in several industries, such as hydro-electric power plants, cement quarries, coal mines and railway systems.

In order to provide a quick response to our customers, we have stocked over US$1.5 Million spare parts of Ingersoll-rand and Atlas Copco in our Chinese warehouse. Recently, we have exported small air compressors, pneumatic crawler drills, water well drills and drilling accessories and spare parts to overseas market.

2) Power Group

GSKA has been supplying CAT-parts and Broadcrown gensets for more than 15 years. Our major customers include Telecoms, Banks, Airports, Factories and many other sectors in the society. We are also doing assembly of gensets in China, under our brand name of "GSKA " with ratings from 1KVA to 2000KVA. The quality of "GSKA " genset has won a very good reputation from customers in China and overseas market.

We are also the specialists for genuine spare parts, such as CAT-parts, Perkins, FG Wilson, Cummins, , Volvo, etc.

Besides gensets, we also provide total solution on the power problems, such as Powerware - UPS, DC system and battery ,lightning equipment and many other electronic products.

3) Security and IT Group

GSKA acquired famous USA brand name Locktronix in 2004 and started manufacture electric locks in China. Since then, we have been exported products to the Middle East, South Asia and Africa. Our market is expanding each year and we are looking for more distributors in different countries to be our business partners. Besides electric locks and accessories, we have also developed our own access control system by our software team. The system includes smart card solution and also biometric access control, such as hand-key, fingerprint and facial recognition. Our EC-PAYROLL system has been widely used in many factories both in Hong Kong and mainland China.

After all, GSKA has an objective of "Always Provide the Best" and we shall consistently provide high quality products and reliable services to our worldwide customers. We are looking forward to making good business with our partners