“Counter-regulation” has many functions:
1. Regulating navigation: For example, Gezhouba is the counter-regulation reservoir for the future Three Gorges Project. After the operation of the Three Gorges Project, the water flow from the power plant changed dramatically, which affected navigation in the section of the canyon dozens of kilometers below. With the Gezhouba Dam holding back the water, this section of the river has become a gentle channel. .
2. Counter-regulation of river flow: For example, the planned Xixiayuan Reservoir is downstream of Xiaolangdi Reservoir. When Xiaolangdi generates electricity, Xixiayuan Reservoir can hold part of the water. When Xiaolangdi stops generating electricity, Xixiayuan can continue to release water, and the streams downstream of the river can continue to have water.
3. Counter-regulation of electricity production capacity: each cenThe cascading electrical channel is jointly distributed according to the water storage situation and the electrical network load to fully exploit the capabilities of the equipment and reduce water abandonment.
Reverse power transmission is a period when a power plant is shut down during operation and planning. At this time, it is originally within the power supply range of the power plant and the self-consumption power of the power plant. The power plant is transmitted in reverse by the power grid.
How do hydroelectric power plants work?
Condensate - condensate pump - shaft plus - low plus - deaerator - feed water pump - high plus - economizer - steam drum - downspout - water cooling Wall—steam drum (steam separation -water)—superheater (ceiling, grate, low temperature, final stage superheaterl...) - high pressure steam turbine cylinder - high pressure cylinder exhaust - heater (grid, wall...) Don't wait any longer) - medium pressure steam turbine cylinder—steam turbine low pressure cylinder— condenser—condensate water
This is the main process of the boiler steam and water system
The details are as follows: < /strong>
1. Dams Most hydroelectric plants rely on dams to hold back water, forming a huge reservoir.
2. When the water inlet opens the dam gate, the water will pass through a water channel called a tunnel under the action of gravity, which will guide the water flow to the turbine. Water pressure increases as it flows through a stream.
3. The water flow from the hydraulic turbine impacts and rotates the huge blades of the hydraulic turbine, and the hydraulic turbine is connected to the generator above by a transmission shaft.mission. The most common turbine in hydroelectric power plants is the Francis turbine, which resembles a large plate with curved blades. According to data provided by the Foundation for Water and Energy Education (FWEE), the turbine can weigh up to 172 tons and rotate at a speed of 90 revolutions per minute.
4. When the generator's turbine blades rotate, a series of magnets in the generator also rotate together. Huge magnets spin through copper coils, moving electrons to create an alternating current.
5. The water present in the drive shaft reservoir that connects the turbine and the generator is considered stored energy. When the door is opened, the water flowing through the tunnel is converted into kinetic energy because it is in motion.
6. The amount of electrical energy that can be generated depends on several factors, two of which are the size of the water flow and theat the height of the water. Water height refers to the distance between the water surface and the turbine blades. The higher the water height and water flow, the more electrical energy is generated. The water height generally depends on the storage capacity of the tank.