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Hydropower station dam intelligent standby power supply system

A backup power supply and hydropower station technology, applied in the field of power systems, can solve problems such as poor stability and complex structure, achieve high stability and reliability, simplify circuit structure, and ensure stable work

Pending Publication Date: 2021-02-02
SICHUAN HUANENG BAOXINGHE HYDROPOWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of poor stability and complicated structure of the standby power supply system in the prior art, the invention discloses an intelligent backup power supply system for a hydropower dam. stable power supply, and its simple circuit structure not only reduces the hardware cost, but also can effectively improve the stability and reliability of the equipment, ensuring the stable power supply of the dam under extreme working conditions

Method used

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  • Hydropower station dam intelligent standby power supply system
  • Hydropower station dam intelligent standby power supply system
  • Hydropower station dam intelligent standby power supply system

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Embodiment approach 1

[0031] This embodiment, as the basic embodiment of the present invention, discloses an intelligent backup power system for a hydropower station dam. The specific structure is as follows: Figure 1 to Figure 3 As shown, it includes a controller 1 and two sets of standby power supply devices with the same structure, each set of standby power supply includes a transformer 3, the input terminal of the transformer 3 is connected to the power supply network, and its output terminal is connected with the control switch 4 through the control circuit on-off state. The power supply network of the dam is connected, and at the same time, one end of the transformer 3 connected to the power supply network of the dam also conducts the two sets of backup power supply devices through a parallel power supply branch, and a tie circuit breaker 2 is connected to the power supply branch of the road to control the two The on-off state between the backup power supply units; the control switch 4 adopts...

Embodiment approach 2

[0035] This embodiment, as another preferred embodiment of the present invention, discloses an intelligent backup power supply system for a hydropower dam on the basis of Embodiment 1. The specific structure is as follows figure 2 and image 3As shown, it includes a controller 1 and two sets of standby power supply devices with the same structure; the controller 1 includes a dual power supply module 12 and a PLC controller 13, wherein the dual power supply module 12 is connected with two power supply lines, one of which adopts UPS AC power supply, the other road is connected with 220V DC power supply; thereby guaranteeing the power supply stability to PLC, thereby realizing to supply power to PLC controller 13; Simultaneously, the input end of PLC controller 13 is also respectively connected with circuit breaker 2, the first through RS485 bus. The voltage detection device 5, the second voltage detection device 6, the third voltage detection device 8, the control valve 11 are ...

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Abstract

The invention discloses a hydropower station dam intelligent standby power supply system, and the system comprises two sets of standby power supply devices which are communicated with each other, wherein the standby power supply devices are connected through an interconnection circuit breaker, each standby power supply comprises a transformer, and a power supply of a mains supply network is converted into electric energy required by a dam power utilization system through the transformers. A control switch is arranged at the output end of the transformer, voltage measuring sensors are arrangedon the two sides of the control switch respectively, the output end of the transformer is further connected with a diesel generator in parallel, and the output end of the diesel generator is providedwith the voltage measuring sensors and the control switch. Dual backup of the standby power supply is realized through the two groups of standby power supplies and the diesel generator, so that the stability of the standby power supply is greatly improved; meanwhile, the control circuit comprises the voltage measurement sensor and the circuit control switch, so the circuit structure of the whole system is greatly simplified, the reliability and stability of operation are improved, and the fault of the power grid can be ensured.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to an intelligent standby power supply system for a hydropower station dam. Background technique [0002] The dam of the hydropower station is an important part of the hydropower station, and it has the functions of flood regulation and storage, flood control and disaster reduction. To achieve this function, it is necessary to set up control gates on the dam of the hydropower station. When floods come in the flood season, by adjusting the opening of the gates, it is possible to adjust flood peaks and prevent floods. When the flood situation is over, the water storage volume is blocked by closing the gate to improve the comprehensive utilization efficiency of water resources. Therefore, whether the dam gate can be opened and closed safely and reliably is directly related to whether the reservoir can be operated safely and economically; it is also related to the safety...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/08H02J9/04H02J13/00
CPCH02J9/04H02J9/08H02J13/00001H02J13/00002H02J13/00016H02J13/00022Y02B10/70Y02B70/30Y02B90/20Y04S20/12Y04S20/20Y04S20/248
Inventor 施德航郑俊
Owner SICHUAN HUANENG BAOXINGHE HYDROPOWER CO LTD
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