0.4KV-10KV Electrical Cabinet Care
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|Place of Origin:||China|
0.4KV-10KV Electrical Cabinet Care
I. High & Low voltage cabinets installation of power plant
2. 0.4KV low voltage switch cabinet installation of power plant
3. Installation of generator protection system, synchronization system, transformer protection, H.V. motor protection, circuit protection in a power plant.
II. Electrical configuration testing items of power plant
1. Vacuum Circuit Breaker insulation resistance measurement, each phase circuit resistance measurement and AC voltage withstand tests of 10KV H.V. switch cabinet.
2. DC resistance measurement of CT and PT, polarity test, ratio test, AC voltage withstand tests in 10KV H.V. switch cabinet.
3. AC voltage withstand tests for whole 10KV H.V. switch cabinet.
4. AC resonant test for 10KV H.V. electric Cable.
5. DC resistance measurement of generator stator and rotor.
6. Generator stator coil insulation resistance measurement and DC voltage withstand tests.
7. Generator rotor insulation resistance measurement.
8. Generator rotor AC impedance and power loss tests.
9. No-load characteristic test of generator
10. Generator checking phase sequence (fist checking phase and second checking phase separately).
11. Generator short circuit characteristic test.
12. Measurement of residual voltage of stator after automatic magnetic blow-out and switch opening of generator.
13. Generator shaft voltage measurement.
14. Generator simulate synchronization.
15. All of the second circuit checking, measuring, switch tripping & closing tests, protection fixed value setting, protecting the STG trip test and magnetic blow-out tripping test for steam turbine and generator.
III.Electrical problem troubleshooting in power plant
Problem Description: a coal mine`s 35KV H.T. switchgear OC protection tripped suddenly in He`nan Province, it caused sudden power lost of mine fan and endanger miner safety.
Auto-reclosing via switchgears` automatic reclosing function, through analysis, the reason is a set of 3000KW generator failure. Specific reason is: When the turbo-generator was running normally, exciting voltage lost suddenly, leading phase operation happened, the generator absorbed reactive power and lead to becoming motor running. Generator protection and power plant connecting line protection did not launch. After the generator absorbed a certain value of reactive power, the 35KV H.T. switchgear`s OC protection tripped.
Investigation: generator and power plant connecting line protection setting fixed value exceed the protection fixed value of 35KV switchgear side, it lead to nearby protection did not launch and override trip when generator failure.
Shandong Qingneng Power Co., Ltd.
1. Company Overview
Located in the Qingzhou city of Shandong province, QNP(QingNeng Power)has developed into the largest leading private manufacturer of steam turbines and generators in China, covering an area of 200,000 square meters with building area of 90,000 square meters.
We have subsidiaries in Indonesia and Beijing, as well as a branch office in Shanghai. QNP has been awarded with many honors, such as the
- NATIONAL HIGH-TECH ENTERPRISE,
- SHANDONG ENTERPRISE TECHNOLOGY CENTER,
- SHANDONG HIGH SPEED & HIGH EFFICIENCY STEAM TURBINE RESEARCH CENTER,
- MEASUREMENT GUARANTEE QUALIFIED ENTERPRISE.
In addition, it has earned certificates of CE, API and ISO9000.
2. Our Product & Service
QNP manufactures various steam turbines. At present, we mainly focus on the research and promotion of single layout and packaged steam turbines, as well as High speed & high efficiency steam turbines.
The Generator product includes two pole 50 hertz Generators and four pole 60 hertz Generators. The highest voltage can reach up to thirteen point eight kilovolts, and the layout can be either single tier or double tiers. The Generators can be provided with either a Static Excitation System or a Brushless Excitation System as required by the Customer.
The Electrical Control equipment consists of HV & LV switchgears, synchronization panels and a DC system, contributing to the integration of power generation, synchronization with grid and transmission of power.
Our power design institute can provide complete project solutions for customers from design, construction, procurement, and installation to commissioning of the power plant, shortening the project period and reducing the project cost for our customers.
QNP is collaborating with world class suppliers of Gas Turbines to introduce advanced Gas Turbine technology, promoting Combined Cycle Power Projects with higher Plant efficiency.
With strong manufacturing and machining capacities, main parts and key components of our products are made by CNC machines. More than 400 types of advanced equipment with high accuracy, strong reliability and advanced machining processes are available with QNP, such as the Mitsubishi Planer five sides machining center, the Italy horizontal slotting machine, the 10 meters CNC heavy duty horizontal lathe, the 8 meters vertical lathe, the 6 meters CNC grinding machine, the CNC gantry milling and drilling machine, the CNC gantry wrapping machine and the winding machine for generators. The components are standardized and modularized with enhanced universality and compatibility.
Our state of the art quality test center consists of a physics lab, a chemistry lab, a chemical analysis lab, a precision measurements lab and a metrology lab. The high speed dynamic balancing test machine can test rotors at speeds up to 15000 rpm. The Steam Turbine trial platform can do load tests and performance verification tests. Other instruments such as our German direct-reading spectrometer, tri-linear coordinate measuring instrument, and our speed test platform provide reliable assurance of product quality.
3. Project Cooperate With Us
- QNP, in cooperation with the Chinese Academy of Sciences (CAS) has adapted it's evaporative cooling technology for cooling of distributed energy Generators, which has reduced the size of Generators significantly.
- In collaboration with Sea Water Desalination Institute of State Oceanic Administration, QNP has formed a technical team to carry out research on the key technologies of power generation and sea water desalination.
- QNP has set up a training mechanism for senior managers with Tsing Hua University and Peking University, as well as technical trainings with Xi`an Jiaotong University, the Huazhong University of Science and Technology, and Shandong University in multiple fields.
- The rapid development of QNP has captured the attention of the Fortune Global 500 companies, such as the M AN Group from Germany, and Mitsubishi Heavy Industries from Japan. These companies and numerous others have worked with QNP for technical exchanges.
- QNP has also gotten strong support from central and local government. Top government officials at all levels have visited QNP many times and given high ratings on QNP`s development.
4. Sales & After Sales
The market share of QNP is growing steadily and rapidly. Our agents and products have a presence in many countries and regions all over the world such as the U.S.A, Canada, Brazil, Argentina, Russia, Australia, Serbia, India, Indonesia, Pakistan, the Philippines, Thailand, Cambodia, Vietnam, Iran, Myanmar, as well as Sudan, Morocco and Algeria in Africa.
QNP has a skilled and experienced After Sales team geared up for fast response and superior services to our customers at any time. Our Long distance monitoring center is equipped to monitor, diagnose, serve and manage the units delivered. QNP also provides technical training to our customers at regular intervals.
QNP regards continuous learning ability as one of the company`s core competitiveness and provides regular training to employees to enhance their comprehensive abilities and skills.
The structure of our management is the basic solution for our development. The Basic Law of QNP and other related regulations have been established to change the management style from [rule of man" to [rule of law". This has laid a solid foundation for further development of QNP.
Reviving national industry is our task. Becoming a first-class power equipment manufacturer of the Global economy and energy conservation is our objective.
Thinking freely, working seriously!
Passion is the endless source of creation!
Passion creates the future!
This is QNP
- Company Name: Shandong Qingneng Power Co., Ltd.
- Representative: GUO WEI
- Product/Service: Steam Turbines , Generators , Turnkey Project , Steam Turbine Care , Turbomachinery , Steam Plant Services
- Capital (Million US $): 100，200，000RMB
- Year Established: 2000
- Total Annual Sales Volume (Million US $): Above US$100 Million
- Export Percentage: 11% - 20%
- Total Annual Purchase Volume (Million US $): Above US$100 Million
- No. of Production Lines: 8
- No. of R&D Staff: 31 -40 People
- No. of QC Staff: 5 -10 People
- OEM Services Provided: yes
- Factory Size (Sq.meters): Above 100,000 square meters
- Factory Location: No.3011 Haidai North Road,Qingzhou City, Shandong Province, China
- Contact Person: Ms. Sarah
- Tel: 86-536-3526005
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