Overview of the original state of hydropower station: impulse unit, installed capacity: 3 1600kw high-voltage 6.3kV brush generator units and 1 630kw brushless generator unit.
Potential safety hazard: the governor leaks oil, it is difficult to adjust the frequency in place at one time, and the unit may not be shut down due to voltage or power loss. The aging of the integrated protection screen has serious insufficient electrical protection, ranging from burning out the generator to accident damage to the main transformer and water turbine.
Low efficiency operation: problems such as backward governor, excitation screen, control panel, high and low voltage switchgear and grid connection cabinet lead to cumbersome and complex operation: the grid voltage cannot be automatically tracked before excitation grid connection, the constant power factor cannot automatically meet the grid assessment requirements after grid connection, the active power cannot be automatically adjusted according to the incoming water condition after grid connection, the water level needs to be monitored manually in real time to adjust the power, and the degree of automation is very low The number of personnel on duty is as high as 15, the time from single startup to grid connection is as slow as 4-6 minutes, the waste of water flow in the past is large, the optimal efficiency of power generation operation is not reached, and it is expected to be less than 5% - 10% of the designed power generation.



In this regard, the company makes a comprehensive intelligent technical transformation of the whole station
Supporting a complete set of one-stop production, installation, commissioning and services such as primary high voltage grid connection cabinet, intelligent automation panel, comprehensive protection and monitoring panel, transformer comprehensive protection panel, uninterrupted DC power supply panel, auxiliary power supply panel, microcomputer hydraulic governor, video monitoring, gate comprehensive control cabinet, reservoir water level optical fiber transmission equipment, remote supervision and monitoring cloud platform of Shenzhen Guodian automation equipment Co., Ltd, In the past, 3-5 companies completed the technical transformation together. Now only one unit of the company is required to complete all the technical transformation and upgrading, seamless and perfect connection of technology and communication, and high installation and commissioning efficiency!
Detailed configuration:
1. High voltage grid connection cabinet and Pt cabinet

2. Unit LCU intelligent control panel

3. Excitation panel of unit

4. Microcomputer hydraulic governor

5. DC power supply panel 100Ah and auxiliary power supply panel ensure the power supply of equipment

6. Transformer protection panel

7. Generator protection panel

8. Gate valve control panel (5.5kW motor)
9. Optical fiber transmission equipment for reservoir water level
10. Video monitoring equipment
11. Remote supervision software platform

[after transformation] through this upgrading and transformation, the objectives of fully automatic power generation operation in hydropower stations, improving equipment and property safety, promoting safe production and increasing power generation are mainly realized. The intelligent power generation mode of single machine and multi machine cooperation realizes that the whole station can automatically adjust the active power and reactive power of multiple units according to the water level and water inflow, always maintain high water level and high pressure power generation, and reasonably connect to the grid without impact from single startup to grid connection as fast as 40-80 seconds (originally 4-6 minutes). The comprehensive protection of the whole station is complete, the safety level is high, the labor intensity is reduced, the staff is saved by 80%, and the comprehensive evaluation indirectly improves the power generation benefit by 3% - 15%.