Heterogeneous energy complementary power generation scheduling method based on grid-source mutual feedback

A technology of energy complementarity and dispatching method, which is applied in the direction of energy storage, resources, and AC network load balancing, etc., which can solve problems such as high initial cost, unfavorable environmental protection, and many limiting conditions, and achieve reduced solution difficulty, stable power, and high-quality power Effect

Active Publication Date: 2020-05-19
SICHUAN UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The peak-shaving power supply should have the characteristics of flexible start-up and low cost. Existing studies have shown that traditional thermal power generation has these characteristics. The use of thermal power generation can reduce the curtailment of wind power and photovoltaic power generation. It is beneficial to environmental protection; the hybrid system including energy storage devices can temporarily store excess electricity and release it when needed to increase the consumption rate of wind and solar electricity. However, energy storage equipment usually has a high technical initial cost and many restrictions. It is more suitable for the integrated application of small-scale renewable energy. Pumped storage needs to consider geographical conditions and is more suitable for off-grid power generation systems. The interactive operation mode of cross-regional heterogeneous energy complementary power generation is a low-carbon environmental protection and resource integration and utilization method. The most worthy of research and promotion

Method used

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  • Heterogeneous energy complementary power generation scheduling method based on grid-source mutual feedback
  • Heterogeneous energy complementary power generation scheduling method based on grid-source mutual feedback
  • Heterogeneous energy complementary power generation scheduling method based on grid-source mutual feedback

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Embodiment 1

[0040] figure 1 It is a structural diagram of a heterogeneous energy complementary power generation scheduling method based on network source mutual feed of the present invention;

[0041] A method for scheduling heterogeneous energy complementary power generation based on network-source mutual feedback, comprising the following steps:

[0042] Step 1: Predict the power generation value of the cascade hydropower station and distributed photovoltaic power station and send it to the grid;

[0043] Step 2: The power grid inputs the power generation value of each power station and the grid-connected demand value of the power grid into the constructed heterogeneous energy complementary power generation dispatching model, and obtains the power generation plan value of the hydropower station and the distributed photovoltaic power station;

[0044] Step 3: According to the power generation plan value in step 2 and the actual operating status of each cascade reservoir in the hydropowe...

Embodiment 2

[0060] On the basis of Example 1, please refer to Figure 4 , the dispatching process proposed in this embodiment is mainly divided into two stages. The dispatching preparation stage is based on distributed photovoltaic power generation capacity prediction and reservoir runoff prediction, reporting the power generation capacity of each power station to the grid, and the grid side is based on the collected electricity load forecast curve , Coordinating and formulating the power generation plan of each power station; the distributed photovoltaic power station and cascade hydropower station determine the power generation plan according to the grid-connected capacity and storage water level detection. During the operation phase, the power supply side runs according to the power generation plan and reports to the power grid in real time. The power grid conducts system security checks, calculates power flow and system stability, and feeds back to the power station operation adjustmen...

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Abstract

The invention relates to the field of new energy grid connection. The invention aims to provide a heterogeneous energy complementary power generation scheduling method based on grid-source mutual feedback. The method considers both the power supply side and the power grid side, and construct a heterogeneous energy complementary power generation short-term optimization scheduling model based on grid-source mutual feedback; and two targets with the maximum power-load matching degree and the minimum clean electric energy abandoning quantity are decomposed into sub-models, thereby reducing the solving difficulty, and improving the calculation efficiency; and new energy is consumed as much as possible under the condition that the power supply and the load are highly matched, and the cascade water and electricity abandoning amount is reduced, thereby maximizing the utilization of clean energy, and providing stable high-quality electric quantity for a power grid.

Description

technical field [0001] The invention relates to the field of grid-connected power generation, in particular to a dispatching method for heterogeneous energy complementary power generation based on network source mutual feed. Background technique [0002] In order to limit greenhouse gas emissions and reduce environmental pollution, China has proposed a series of preferential policies to increase the proportion of clean energy, promote the development of renewable and clean energy, and accelerate the transformation of energy structure. These measures have driven the vigorous development of wind energy and solar energy industries. The proportion in China's power system is gradually increasing. But what is not optimistic is that new energy power generation has the characteristics of volatility, randomness, and intermittency, and the transmission planning of new energy bases lags behind the construction of the power grid, and the planning and allocation of transmission channels ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46H02J3/38H02J3/28G06Q10/06G06Q50/06
CPCH02J3/46H02J3/28G06Q10/06312G06Q50/06Y02E70/30Y04S10/50Y02E40/70Y02E10/56
Inventor 陈仕军张歆蒴马光文黄炜斌韩晓言王亮
Owner SICHUAN UNIV
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