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An off-grid wind-solar-storage multi-energy complementary electric, hot water and gas co-supply method

A technology of wind energy storage and combined heat and power supply, applied in wind power generation, photovoltaic power generation, electrical components, etc., can solve the problem of waste of clean energy and achieve the effect of avoiding waste

Active Publication Date: 2021-08-24
HARBIN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the currently used off-grid new energy multi-energy complementary integrated system, generally under the condition that the multi-energy complementary integrated system meets the load power consumption, the new energy power generation devices adopted such as wind turbines, photovoltaics, etc. are limited by wind and electricity. operation mode, or even take shutdown operation directly in extreme cases, so that a lot of clean energy is wasted

Method used

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  • An off-grid wind-solar-storage multi-energy complementary electric, hot water and gas co-supply method
  • An off-grid wind-solar-storage multi-energy complementary electric, hot water and gas co-supply method
  • An off-grid wind-solar-storage multi-energy complementary electric, hot water and gas co-supply method

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specific Embodiment approach 1

[0035] An off-grid wind-storage-storage multi-energy complementary electric, hot water and gas co-supply method, such as image 3 and Figure 4 shown, including the following steps:

[0036] Step a, the energy management system 6 receives a startup command;

[0037] Step b. Determine whether the SOC value of the energy storage lithium battery in the energy storage system 1-3 is less than 30%. If it is less than this value, the system will not start, and the photovoltaic module will charge the energy storage lithium battery through the optical storage integrated machine;

[0038] Step c. If the SOC of the energy storage lithium battery is ≥ 30%, define the discharge power of the energy storage lithium battery at time T as W battery , The power generated by the wind turbine is W wind , The power generation power of photovoltaic modules is W pv , Electric load system 2 power consumption W l ;

[0039] When W battery +W wind +W pv >W l When , the electrical load system 2...

specific Embodiment approach 2

[0060] An off-grid solar energy multi-energy complementary electric heating water gas cogeneration system, such as figure 1 As shown, it includes wind-solar-storage micro-grid subsystem 1, electric load system 2, hydrogen / oxygen production subsystem 3, fuel cell cogeneration system 4, power distribution system 5, energy management system 6, active filter APF7, the A switch 8, a second switch 9, a third switch 10, a fourth switch 11 and a fifth switch 12; the hydrogen / oxygen production subsystem 3 is connected to the first switch 8, and the first switch 8 is respectively connected to the power distribution system 5. The electric load system 2, the active filter APF7 and the second switch 9, the second switch 9 is respectively connected to the energy management system 6, the third switch 10, the fourth switch 11 and the fifth switch 12, the third The switch 10 and the fourth switch 11 are respectively connected to the wind-solar-storage micro-grid subsystem 1, and the fifth swit...

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Abstract

An off-grid wind-solar-storage multi-energy complementary electric-hot-water-gas co-supply method belongs to the field of new energy utilization; it includes the quantity management system receiving a startup command; judging whether the SOC value of the energy storage lithium battery in the energy storage system is less than 30%, and if it is less than the value, the system will not start, and the photovoltaic module will charge the energy storage lithium battery through the optical storage integrated machine; if the SOC of the energy storage lithium battery is ≥ 30%, when W battery +W wind +W pv >W l When W battery +W wind +W pv =W l When W battery +W wind +W pv <wWhen l, the electric load system operates with limited power for seawater desalination, and the hydrogen / oxygen subsystem does not work; the fuel cell combined heat and power system performs heat supply according to a specific heating method based on the hydrogen produced by the hydrogen / oxygen subsystem; effective It solves the technical problem of operating the new energy power generation system with limited wind and power under the condition of meeting the load and electricity consumption, and avoids a large amount of clean energy from being wasted.< / w

Description

technical field [0001] The invention belongs to the field of new energy utilization, and in particular relates to an off-grid wind-solar-storage multi-energy complementary electric-hot-water-gas co-supply method. Background technique [0002] China has a vast territory, and the vast southeast coastal areas are extremely rich in wind energy resources; at the same time, China also has abundant solar energy resources. On the other hand, the pollution problem caused by the extensive use of traditional fossil fuels has attracted widespread attention from the government and the public. With the decline of power generation costs and increasingly severe environmental issues, renewable energy such as wind and solar power is gradually increasing its share in the power sector. [0003] At present, there are mainly two types of new energy multi-energy complementary systems, off-grid and grid-connected. For the currently used off-grid new energy multi-energy complementary integrated sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/383H02J3/386H02J3/32Y02E10/56Y02E10/76Y02E60/36Y02E70/30
Inventor 张春伟陈松杨其国张秋鸿董爱华谢敏何一川石玉文由岫
Owner HARBIN ELECTRIC CO LTD