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Hybrid hydropower and photovoltaic coordination control method

A technology of coordinated control and coordinated control system, applied in the direction of electrical components, AC network load balancing, reducing/preventing power oscillation, etc., can solve problems such as poor adjustment accuracy, slow adjustment speed of water and light output power, and large power fluctuations, etc., to achieve The effects of stabilizing output fluctuations, improving consumption levels, and reducing shocks

Active Publication Date: 2022-06-28
阿坝水电开发有限公司
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Problems solved by technology

It aims to solve many problems in the joint operation and coordinated control of hybrid hydropower stations and photovoltaics, such as slow power adjustment speed, poor adjustment accuracy, and large power fluctuations, to improve the stability and smoothness of hybrid hydropower station power transmission. The quality of the sent power reduces the impact of large-scale access to new energy sources such as photovoltaics on the power grid, and at the same time improves the economic benefits of power generation companies

Method used

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  • Hybrid hydropower and photovoltaic coordination control method
  • Hybrid hydropower and photovoltaic coordination control method
  • Hybrid hydropower and photovoltaic coordination control method

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Embodiment Construction

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0024] The present invention takes a hybrid hydropower station that is transformed into a full-power constant-frequency reversible pump-turbine unit from a conventional hydro-generator set of a hydropower station, and is formed together with the original conventional hydro-generator set as an example: the upper reservoir of the hydropower station has a certain adjustment storage capacity, Originally, there were 3 conventional hydro-generator units installed, of which one conventional hydro-generator unit was transformed into a full-power constant-frequency reversible pump-turbine unit after adding a full-power converter; a full-power constant-frequency reversible water pump The water-tu...

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Abstract

The invention discloses a hybrid hydropower and photovoltaic coordination control method, comprising a water-light-storage coordination control system which is composed of a data acquisition unit, a data storage unit, a coordination control unit, an optimization scheduling unit and a telecontrol communication unit. The method comprises the following steps: adjusting the power of a conventional hydroelectric generating set, a full-power variable-speed pumped storage unit and a photovoltaic inverter; coordination control among conventional hydropower, variable-speed pumped storage and photovoltaic is achieved, photovoltaic output fluctuation is stabilized, meanwhile, a power generation water head of the hybrid hydropower station is raised, and all hydropower generating units can be maintained to operate in a high-efficiency area. Under the condition that photovoltaic output priority is guaranteed, stability and reliability of water-light-storage combined operation output power are achieved, the absorption level of new energy is improved, meanwhile, impact of new energy access on a regional power grid is reduced, and the method has extremely high application and popularization value.

Description

technical field [0001] The invention relates to the technical field of power generation, in particular to a coordinated control method of hybrid hydropower and photovoltaics. Background technique [0002] Due to the randomness, volatility and intermittency of renewable energy such as wind and photovoltaics, large-scale renewable energy will have a great impact on the stability of the power system and power supply quality after large-scale renewable energy is connected to the grid; at the same time, a high proportion of new energy The grid-connected operation will replace the synchronous generator set with large mechanical inertia and strong anti-interference ability, resulting in a significant reduction in the equivalent inertia of the system, a reduction in the inertia of the system, a decrease in the frequency regulation capability, and an increase in the risk of frequency exceeding the limit. The hydroelectric generating unit has flexible start-up, fast response speed, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/46H02J3/24H02J3/32
CPCH02J3/38H02J3/46H02J3/24H02J3/32H02J2300/24Y02E10/56
Inventor 卢彦林杨炳全邓小华鲜喜敏孟帮杰胡炎温洪林李世杰李庆云杨书
Owner 阿坝水电开发有限公司
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