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Source-grid-load-storage coordinated operation method considering large-scale offshore wind power integration

A technology for offshore wind power and operation methods, which is applied in wind power generation, energy storage, and single-grid parallel feeding arrangement, etc., can solve problems such as insufficient peak shaving capacity and abandoned wind, and achieve the effect of reducing operating costs.

Active Publication Date: 2021-05-07
NANCHANG UNIV
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Problems solved by technology

And on this basis, a source-grid-load-storage coordinated operation model is established that takes into account large-scale offshore wind power grid-connected, aiming at the lowest operating cost of the power system, to solve the problem of a large number of offshore wind power grid-connected due to insufficient peak-shaving capacity of the power system The case of massive wind curtailment

Method used

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  • Source-grid-load-storage coordinated operation method considering large-scale offshore wind power integration
  • Source-grid-load-storage coordinated operation method considering large-scale offshore wind power integration
  • Source-grid-load-storage coordinated operation method considering large-scale offshore wind power integration

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[0218] For this example, the power grid in this region includes 1 offshore wind farm, 3 thermal power units, 3 controllable and interruptible load users and 1 energy storage battery, and has also signed a connection line power receiving and transmission agreement with other local power grids . In order to reflect the trend of large-scale offshore wind power grid integration in the future, the installed capacity of the offshore wind farm is set at 60MW, which is 16% of the total installed capacity in the region, and the highest penetration rate to the load side can reach 20.41%. For the daily load curve of the day, see image 3 ; The wind curtailment penalty cost coefficient of the offshore wind farm is 0.6 yuan / kWh, and the actual output data of the day is the measured output of an offshore wind farm in the area, see Figure 4 ;Environmental cost coefficient E of thermal power unit i Take 20 yuan / t.

[0219] It is preset that the power grid in this area adopts the coordinat...

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Abstract

The invention provides a source-grid-load-storage coordinated operation method considering large-scale offshore wind power integration. The method comprises the steps of establishing a set of offshore wind power peak regulation characteristic index system suitable for power grid coordinated operation; providing the source-grid-load-storage coordinated operation method considering large-scale offshore wind power integration, and taking the lowest system operation cost as a target function; taking a certain actual power grid in Fujian province in China as an example, setting two scenes of source-grid-load-storage coordinated operation and source-grid-load coordinated operation in a certain scheduling day respectively; and comparing the total operation cost, fossil fuel consumption and offshore wind power consumption conditions of the system in the two scenes. According to the method, a set of offshore wind power peak regulation characteristic indexes is established, and the peak regulation characteristic of offshore wind power to a power system can be visually reflected; and the invention provides the source-grid-load-storage coordinated operation method considering large-scale offshore wind power integration, which can effectively reduce the operation cost of a power grid, reduce fossil fuel consumption and improve offshore wind power consumption.

Description

technical field [0001] The invention relates to a method for coordinated operation of source, network, load, and storage in consideration of large-scale offshore wind power grid connection, and belongs to the technical field of power system operation and control. Background technique [0002] In the future, offshore wind power will be integrated into the power system with rapid growth and high penetration. As a large coastal country, my country has a long coastline and a vast sea area, and has very rich marine wind energy resources. According to data, in the sea area under the jurisdiction of my country to the north of 15°N, the wind energy resource reserves at a height of 70m are 16.45 billion kW, and the technically exploitable capacity is 12.90 billion kW. It is 14.08 billion kW, and the technically developable area is about 2.39 million km 2 . [0003] As an unstable and uncontrollable power source, offshore wind power has prominent randomness and intermittency of outp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/46H02J3/32H02J13/00
CPCH02J3/38H02J3/466H02J3/32H02J13/00028H02J2300/28Y04S10/14Y04S10/123Y02E40/70Y02E60/00Y02E70/30Y02E10/76
Inventor 朱自伟郭毅成罗志将易锦桂朱海龙王凯
Owner NANCHANG UNIV
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