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A scheduling method for pumped storage units

A technology of pumped storage unit and dispatching method, which is applied in the direction of mechanical equipment, hydropower generation, engine components, etc. It can solve problems such as water level exceeding dams, flooding in the surrounding environment, failure to implement instructions, etc., to meet peak regulation and frequency regulation requirements and power plant safety , easy-to-execute effects

Active Publication Date: 2019-11-05
蒋钱
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing scheduling method is not designed for the characteristics of the pumped storage unit itself, nor does it take into account the impact of the actual water level on the operation of the pumped storage unit, which will lead to unrealizable instructions, such as requiring the pumped storage unit to generate electricity , but actually the pumped storage unit is unable to generate electricity due to lack of water resources, and there will be instructions that may cause surrounding floods, such as requiring the pumped storage unit to generate electricity, but in reality, the continuous power generation due to excessive water storage will lead to The water level exceeds the embankment causing flooding of the surrounding environment

Method used

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  • A scheduling method for pumped storage units

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Embodiment 1

[0011] See figure 1 .

[0012] A dispatching method for a pumped storage unit, the method comprising:

[0013] 1. Detect water level;

[0014] 2. Realize unit scheduling according to water level.

[0015] The water level refers to the water level of the reservoir. There are two reservoirs in the pumped storage power station, one is the upper reservoir and the other is the lower reservoir. A chiller usually includes multiple chillers with different rated capacities. A variety of methods are used to measure the water level to make the measurement results accurate, such as the upper computer water level monitoring system, hydraulic observation professional network, and manual on-site measurement.

Embodiment 2

[0017] A dispatching method for a pumped storage unit, the method comprising:

[0018] 1. Detect water level;

[0019] 1.1 Detect the water level of the upper reservoir to obtain the real-time value U of the water level of the upper reservoir;

[0020] 1.2 Detect the water level of the lower reservoir to obtain the real-time value L of the water level of the lower reservoir;

[0021] 2. Realize unit scheduling according to water level;

[0022] 2.1 Determine whether the real-time value U of the water level of the upper reservoir is between the preset UH1 and UL1, where UH1 is the primary warning water level of the high water level of the upper reservoir, and UL1 is the primary warning water level of the low water level of the upper reservoir. If so, according to the actual scheduling requirements Realize that the unit is running in the pumping condition or the power generation condition; if not, that is, U≥UH1 or U≤UL1, then judge whether the real-time value U of the upper r...

Embodiment 3

[0048] The difference from the second embodiment is that when implementing immediate shutdown of a unit that was originally in the pumping / power generation condition, it is necessary to select the unit with the largest rated capacity.

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Abstract

The invention discloses a scheduling method for a water-pumping and energy-storage unit. The scheduling method comprises the following steps of: I, detecting real-time water level of upper and lower reservoirs; and II, realizing regulation on a unit working condition according to real-time water level values, detected in step I, of the upper and lower reservoirs. The scheduling method for the water-pumping and energy-storage unit takes real-time water level conditions of the upper and lower reservoirs into consideration, compares acquired water level values of the upper and lower reservoirs with set different gear values of high and low water level, sets different scheduling strategies according to different compared results, can guarantee water level of the upper and lower reservoirs to be within reasonable level all the time, and realizes balance among peak-regulating frequency-regulating needs of an electric system, power plant safety, stable operation and a surrounding natural environment, so that a scheduling plan fits to a practical condition better, and is easy to implement.

Description

technical field [0001] The invention relates to a dispatching method of a pumped storage unit, in particular to a dispatching method of a pumped storage unit capable of realizing a balance between power supply and demand and natural environment stability. Background technique [0002] The pumped storage unit is the key to peak regulation and frequency regulation of the power system, and its safe and stable operation is extremely important. The output of ordinary generator sets is only limited by its rated output, and the degree of power demand of ordinary loads is only limited by its rated power. However, in the actual operation of the pumped storage unit, not only its rated output or power as a generator or load must be considered, but it is also affected by its own construction environment and restricted by the reservoir that makes its operation work. [0003] The existing scheduling method is not designed for the characteristics of the pumped storage unit itself, nor doe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B15/00F03B13/06
CPCF03B13/06F03B15/00Y02E10/20Y02E60/16
Inventor 马肃
Owner 蒋钱