CN113422383A - System and method for processing excess electric energy of hydropower station - Google Patents
System and method for processing excess electric energy of hydropower station Download PDFInfo
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- CN113422383A CN113422383A CN202110494513.2A CN202110494513A CN113422383A CN 113422383 A CN113422383 A CN 113422383A CN 202110494513 A CN202110494513 A CN 202110494513A CN 113422383 A CN113422383 A CN 113422383A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a system and a method for processing excess electric energy of a hydropower station, wherein the system comprises the following steps: the system comprises a generator, a generator voltage bus, a main transformer, a second bus, a second transformer, a third bus, a rectifier and electrolytic hydrogen production equipment; the second bus is connected with the generator voltage bus through the main transformer, and an outgoing line of the second bus is connected with a power grid; the third bus is connected with the generator voltage bus through the second transformer, and the electrolytic hydrogen production equipment is connected with the third bus through the rectifier; converting the voltage output by the generator voltage bus into a usable voltage of the electrolytic hydrogen production equipment by using the second transformer; the rectifier is used for converting the alternating current output by the third bus into the direct current required by the electrolytic hydrogen production equipment; and consuming the surplus electric energy of the hydropower station by utilizing the load of the electrolytic hydrogen production equipment. The system and the method provided by the invention fully utilize the generated energy of the excessive water amount to produce hydrogen and oxygen at low cost.
Description
Technical Field
The invention relates to the technical field of power generation, in particular to a system and a method for processing surplus electric energy of a hydropower station.
Background
The output electric quantity of the power station is limited by the power consumption demand of users and the capacity of a power grid, and at the present time, in a rich water period, if the load of a power grid for a water power station is small, the water coming from a reservoir of the power station is large, the water consumption necessary for generating capacity is removed, when the surplus water quantity exceeds the reservoir capacity, the power station must abandon the water, and the water does not participate in power generation, so that the water resource is wasted.
In conclusion, it can be seen that how to fully utilize the generated energy of the excess water of the power station reservoir in the rich water period is a problem to be solved at present.
Disclosure of Invention
The invention aims to provide a system and a method for processing surplus electric energy of a hydropower station, which are used for solving the problem of water resource waste caused by the fact that the hydropower station cannot fully utilize the surplus water quantity of a reservoir in a rich water period in the prior art.
In order to solve the above technical problem, the present invention provides a system for processing surplus electric energy of a hydropower station, including: the system comprises a generator, a generator voltage bus, a main transformer, a second bus, a second transformer, a third bus, a rectifier and electrolytic hydrogen production equipment; the second bus is connected with the generator voltage bus through the main transformer, and an outgoing line of the second bus is connected with a power grid; the third bus is connected with the generator voltage bus through the second transformer, and the electrolytic hydrogen production equipment is connected with the third bus through the rectifier; the second transformer is used for converting the voltage output by the generator voltage bus into the available voltage of the electrolytic hydrogen production equipment; the rectifier is used for converting alternating current output by the third bus into direct current required by the electrolytic hydrogen production equipment; the electrolytic hydrogen production equipment is used for producing hydrogen by utilizing the surplus electric energy of the hydropower station.
Preferably, the method further comprises the following steps: and the isolating switch and the first circuit breaker are arranged between the generator voltage bus and the second transformer.
Preferably, the method further comprises the following steps: a second circuit breaker disposed between the second transformer and the third bus.
Preferably, the method further comprises the following steps: and the silicon controlled rectifier is arranged between the second transformer and the second circuit breaker.
Preferably, the rectifier is a silicon controlled rectifier and is used for adjusting the hydrogen production power of the electrolytic hydrogen production equipment in real time according to the excess electric quantity of the hydropower station.
Preferably, the electrolytic hydrogen production apparatus comprises: an electrolytic bath, a hydrogen/oxygen gas separator, a hydrogen/oxygen gas cooling liquid and a hydrogen/oxygen gas scrubber.
The invention also provides a hydropower station surplus electric energy processing method, which comprises the following steps:
converting the voltage of the excess electric energy of the hydropower station output by a voltage bus of the generator into the available voltage of the electrolytic hydrogen production equipment through a transformer;
converting the alternating current output by the transformer into direct current required by the electrolytic hydrogen production equipment by using a rectifier;
and connecting the direct current output by the rectifier into an electrolytic cell of the electrolytic hydrogen production equipment, and electrolyzing the alkaline aqueous solution in the electrolytic cell into hydrogen and oxygen when the set value of the power distribution power of the power grid is lower than the actual power value of the unit.
Preferably, the converting the alternating current output by the transformer into the direct current required by the electrolytic hydrogen production equipment by using the rectifier comprises:
and adjusting the hydrogen production power of the electrolytic hydrogen production equipment in real time by using a silicon controlled rectifier according to the excess electric quantity of the hydropower station, and converting an alternating current point output by the transformer into direct current required by the electrolytic hydrogen production equipment.
Preferably, the step of connecting the direct current output by the rectifier to an electrolytic cell of the electrolytic hydrogen production equipment, and when the power distribution set value of the power grid is lower than the actual power output value of the unit, dissolving the alkaline water in the electrolytic cell into hydrogen and oxygen, and electrolyzing the hydrogen and oxygen into hydrogen and oxygen comprises the following steps:
inputting hydrogen obtained by electrolysis into a hydrogen-liquid separator, and separating the hydrogen from the alkali liquor under the action of gravity;
and (3) sequentially inputting the hydrogen output from the hydrogen separator into a hydrogen cooling liquid and a hydrogen washer for cooling and washing, and storing the obtained hydrogen in a storage tank for later use.
The system for processing the surplus electric energy of the hydropower station comprises a generator, a generator voltage bus, a main transformer, a second bus, a second transformer, a third bus, a rectifier and electrolytic hydrogen production equipment. The generator is connected with the generator voltage bus, the generator voltage bus is connected with the second bus through the main transformer, the outgoing line of the second bus is connected with the power grid, the third bus is connected with the generator voltage bus through the second transformer, and the electrolytic hydrogen production equipment is connected with the third bus through the rectifier. The hydropower station converts water energy in the reservoir into electric energy by using the generator, and the load is normally distributed to the Internet through the outgoing line of the second bus. When the power station reservoir has surplus incoming water, the voltage value output by the generator voltage bus is adjusted to be within the voltage range available for the electrolytic hydrogen production equipment through the transformer connected to the generator voltage bus, the alternating current output by the transformer is converted into the direct current required by the electrolytic hydrogen production equipment through the rectifier, and the direct current power supply output by the rectifier is connected to the electrolytic hydrogen production equipment to produce hydrogen. The system provided by the invention can fully utilize the generated energy of the surplus water of the reservoir of the hydropower station to realize low-cost hydrogen production and oxygen production, does not abandon water, and avoids the waste of water resources in a rich water period.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating an operation of a system for processing surplus electric energy of a hydropower station according to an embodiment of the present invention;
FIG. 2 is a flow chart of a first embodiment of a method for handling excess electrical energy of a hydroelectric power plant according to the present invention;
fig. 3 is a flowchart of a second embodiment of a method for processing surplus electric energy of a hydropower station according to the present invention.
Detailed Description
The core of the invention is to provide a system and a method for processing surplus electric energy of a hydropower station, which can make full use of the generated energy of the surplus water of a reservoir of the hydropower station to produce hydrogen and oxygen at low cost.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of an embodiment of a system for processing surplus electric energy of a hydropower station according to the present invention; the specific system may include: the system comprises a generator, a generator voltage bus, a main transformer, a second bus, a second transformer, a third bus, a rectifier and electrolytic hydrogen production equipment.
The generator is used for converting water energy of the hydropower station into electric energy; the main transformer is used for converting the voltage output by the generator into high voltage and transmitting the high voltage to a power grid. And an isolating switch and a generator outlet circuit breaker are connected between the generator and the generator voltage bus. The second bus is connected with the generator voltage bus through the main transformer, and a circuit breaker, a grounding disconnecting link and an isolating switch are arranged between the main transformer and the second bus. The outgoing line of the second bus is connected with a power grid, and an isolating switch and a circuit breaker are arranged between the second bus and the outgoing line.
The third bus is connected with the generator voltage bus through the second transformer, and the electrolytic hydrogen production equipment is connected with the third bus through the rectifier; the second transformer is used for converting the voltage output by the generator voltage bus into the available voltage of the electrolytic hydrogen production equipment; the rectifier is used for converting alternating current output by the third bus into direct current required by the electrolytic hydrogen production equipment; the electrolytic hydrogen production equipment is used for producing hydrogen by utilizing the surplus electric energy of the hydropower station.
The electrolytic hydrogen production apparatus includes: an electrolytic bath, a hydrogen/oxygen gas separator, a hydrogen/oxygen gas cooling liquid and a hydrogen/oxygen gas scrubber.
In this embodiment, an isolation switch and a first breaker are further disposed between the second transformer and the generator motor bus. When the equipment connected to the third bus is overhauled and maintained, the isolating switch can be closed, and the influence on other electric equipment in the electric power system is avoided. The first circuit breaker is used for cutting off and switching on a load circuit and rapidly cutting off a fault circuit when the circuit fails, so that the safe operation of the power system is ensured.
In this embodiment, a second circuit breaker is disposed between the second transformer and the third bus, and is configured to break a connection circuit with the third bus when the second transformer fails. A third circuit breaker is also provided between the rectifier and the third bus for protecting the safe operation of the power equipment in the power system.
The hydropower station surplus electric energy processing system provided by the embodiment of the invention can also utilize the second transformer to adjust the hydrogen production efficiency of the electrolytic hydrogen production equipment according to the surplus electric quantity of the hydropower station, so as to ensure that the electrolytic hydrogen production equipment can effectively consume the generated energy of the surplus water of the hydropower station.
It should be noted that, in other embodiments provided by the present invention, the hydrogen production power of the electrolytic hydrogen production apparatus may also be adjusted in real time by using a silicon controlled rectifier according to the magnitude of the surplus electric quantity of the hydropower station. The silicon controlled rectifier can be installed between the second transformer and the circuit breaker, and the rectifier between the electrolytic hydrogen production equipment and the third circuit breaker can also be set as the silicon controlled rectifier, so that the functions of adjusting the hydrogen production frequency of the electrolytic hydrogen production equipment in real time and converting alternating current output by the third bus into direct current are realized.
According to the system for processing the surplus electric energy of the hydropower station, the hydropower station can generate power by increasing the generating load of the unit in a rich water period besides normally distributing load to generate power on the internet, and the hydrogen production power of the electrolytic hydrogen production equipment is adjusted by the power equipment connected with the voltage bus of the generator and the third bus to consume the generated energy of the surplus water of the reservoir of the hydropower station, so that the hydrogen production and the oxygen production with low cost are realized on the premise of ensuring that the electric quantity on the internet is not changed, and the system can be used by hospitals and new energy automobiles.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for processing surplus electric energy of a hydropower station according to a first embodiment of the present invention; the method provided by the embodiment of the invention is applied to the hydropower station surplus electric energy processing system provided by the embodiment, and the specific operation steps are as follows:
step S201: converting the voltage of the excess electric energy of the hydropower station output by a voltage bus of the generator into the available voltage of the electrolytic hydrogen production equipment through a transformer;
step S202: converting the alternating current output by the transformer into direct current required by the electrolytic hydrogen production equipment by using a rectifier;
step S203: and connecting the direct current output by the rectifier into an electrolytic cell of the electrolytic hydrogen production equipment, and electrolyzing the alkaline aqueous solution in the electrolytic cell into hydrogen and oxygen when the set value of the power distribution power of the power grid is lower than the actual power value of the unit.
The method for processing the surplus electric energy of the hydropower station provided by the embodiment utilizes the generated energy of the surplus water of the hydropower station in the rich water period, and adopts electrolytic hydrogen production equipment to produce hydrogen and oxygen at low cost, so that the waste of water resources is avoided.
Based on the above embodiment, in this embodiment, the hydrogen production power of the electrolytic hydrogen production equipment can be adjusted in real time by using the silicon controlled rectifier according to the magnitude of the surplus electric quantity of the hydropower station, so that the surplus electric quantity is consumed.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for processing surplus electric energy of a hydropower station according to a second embodiment of the present invention; the specific operation steps are as follows:
step S301: converting the voltage of the excess electric energy of the hydropower station output by a voltage bus of the generator into the available voltage of the electrolytic hydrogen production equipment through a transformer;
step S302: according to the magnitude of the surplus electric quantity of the hydropower station, the hydrogen production power of the electrolytic hydrogen production equipment is adjusted in real time by using a silicon controlled rectifier, and an alternating current point output by the transformer is converted into direct current required by the electrolytic hydrogen production equipment;
step S303: connecting the direct current output by the rectifier into an electrolytic cell of the electrolytic hydrogen production equipment, and electrolyzing the alkaline aqueous solution in the electrolytic cell into hydrogen and oxygen when the set value of the power distribution power of the power grid is lower than the actual power value of the unit;
step S304: inputting hydrogen obtained by electrolysis into a hydrogen-liquid separator, and separating the hydrogen from the alkali liquor under the action of gravity;
step S305: and (3) sequentially inputting the hydrogen output from the hydrogen separator into a hydrogen cooling liquid and a hydrogen washer for cooling and washing, and storing the obtained hydrogen in a storage tank for later use.
The oxygen generation process is the same as the hydrogen production process, the generated energy of the excess water of the hydropower station is connected into an electrolytic tank of the electrolytic hydrogen production equipment through a direct current power supply after voltage transformation arrangement, the alkaline aqueous solution is electrolyzed, and the obtained oxygen is sequentially input into gas processors such as an oxygen liquid separator, an oxygen cooling liquid, an oxygen scrubber and the like for processing and storing.
According to the method provided by the embodiment of the invention, the hydrogen production power of the electrolytic hydrogen production equipment can be adjusted in real time to consume the part of electric quantity by using the silicon controlled rectifier collator according to the electric quantity generated by the excess water quantity of the reservoir of the hydropower station, so that under the condition of ensuring that the electric quantity on the internet is not changed, water resources are more effectively utilized, hydrogen production and oxygen production with low cost are realized, and the method can be used by hospitals and new energy automobiles.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The system and the method for processing the surplus electric energy of the hydropower station provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A hydropower station surplus electric energy handling system, comprising:
the system comprises a generator, a generator voltage bus, a main transformer, a second bus, a second transformer, a third bus, a rectifier and electrolytic hydrogen production equipment;
the second bus is connected with the generator voltage bus through the main transformer, and an outgoing line of the second bus is connected with a power grid;
the third bus is connected with the generator voltage bus through the second transformer, and the electrolytic hydrogen production equipment is connected with the third bus through the rectifier;
the second transformer is used for converting the voltage output by the generator voltage bus into the available voltage of the electrolytic hydrogen production equipment;
the rectifier is used for converting alternating current output by the third bus into direct current required by the electrolytic hydrogen production equipment;
the electrolytic hydrogen production equipment is used for producing hydrogen by utilizing the surplus electric energy of the hydropower station.
2. The system of claim 1, further comprising: and the isolating switch and the first circuit breaker are arranged between the generator voltage bus and the second transformer.
3. The system of claim 2, further comprising: a second circuit breaker disposed between the second transformer and the third bus.
4. The system of claim 3, further comprising: and the silicon controlled rectifier is arranged between the second transformer and the second circuit breaker.
5. The system of claim 4, further comprising: a third circuit breaker disposed between the rectifier and the third bus bar.
6. The system of claim 1, wherein the rectifier is a silicon controlled rectifier for adjusting the hydrogen production power of the electrolytic hydrogen production facility in real time according to the excess capacity of the hydropower station.
7. The system of claim 1, wherein the electrolytic hydrogen production apparatus comprises: an electrolytic bath, a hydrogen/oxygen gas separator, a hydrogen/oxygen gas cooling liquid and a hydrogen/oxygen gas scrubber.
8. A method for processing surplus electric energy of a hydropower station is characterized by comprising the following steps:
converting the voltage of the excess electric energy of the hydropower station output by a voltage bus of the generator into the available voltage of the electrolytic hydrogen production equipment through a transformer;
converting the alternating current output by the transformer into direct current required by the electrolytic hydrogen production equipment by using a rectifier;
and connecting the direct current output by the rectifier into an electrolytic cell of the electrolytic hydrogen production equipment, and electrolyzing the alkaline aqueous solution in the electrolytic cell into hydrogen and oxygen when the set value of the power distribution power of the power grid is lower than the actual power value of the unit.
9. The method of claim 8, wherein converting the ac power output from the transformer to the dc power required by the electrolytic hydrogen plant using a rectifier comprises:
and adjusting the hydrogen production power of the electrolytic hydrogen production equipment in real time by using a silicon controlled rectifier according to the excess electric quantity of the hydropower station, and converting an alternating current point output by the transformer into direct current required by the electrolytic hydrogen production equipment.
10. The method of claim 9, wherein said connecting the dc power output from said rectifier to the electrolyzer of said electrolytic hydrogen plant, and when the grid distribution power setpoint is lower than the unit power actual value, said dissolving the alkaline water in said electrolyzer into hydrogen and oxygen comprises:
inputting hydrogen obtained by electrolysis into a hydrogen-liquid separator, and separating the hydrogen from the alkali liquor under the action of gravity;
and (3) sequentially inputting the hydrogen output from the hydrogen separator into a hydrogen cooling liquid and a hydrogen washer for cooling and washing, and storing the obtained hydrogen in a storage tank for later use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110494513.2A CN113422383A (en) | 2021-05-07 | 2021-05-07 | System and method for processing excess electric energy of hydropower station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110494513.2A CN113422383A (en) | 2021-05-07 | 2021-05-07 | System and method for processing excess electric energy of hydropower station |
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| CN113422383A true CN113422383A (en) | 2021-09-21 |
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| CN202110494513.2A Pending CN113422383A (en) | 2021-05-07 | 2021-05-07 | System and method for processing excess electric energy of hydropower station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116047988A (en) * | 2023-03-31 | 2023-05-02 | 成都大汇物联科技有限公司 | Hydropower station remote control system, method and terminal based on Internet of things |
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| CN110601192A (en) * | 2019-09-30 | 2019-12-20 | 长江勘测规划设计研究有限责任公司 | Hydroelectric power station hydroelectric power generation and hydrogen production energy storage system |
| CN111219284A (en) * | 2018-11-25 | 2020-06-02 | 李德宏 | Seawater power generation and hydrogen production power station built on offshore reef |
| CN112332455A (en) * | 2020-11-19 | 2021-02-05 | 西安热工研究院有限公司 | Hydropower station black start system and method with double-voltage-level wiring |
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2021
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| CN111219284A (en) * | 2018-11-25 | 2020-06-02 | 李德宏 | Seawater power generation and hydrogen production power station built on offshore reef |
| CN110518607A (en) * | 2019-09-30 | 2019-11-29 | 长江勘测规划设计研究有限责任公司 | A kind of power station is from consumption hydrogen electricity supply station service electrical system and method |
| CN110601192A (en) * | 2019-09-30 | 2019-12-20 | 长江勘测规划设计研究有限责任公司 | Hydroelectric power station hydroelectric power generation and hydrogen production energy storage system |
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| CN116047988A (en) * | 2023-03-31 | 2023-05-02 | 成都大汇物联科技有限公司 | Hydropower station remote control system, method and terminal based on Internet of things |
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