CN214707179U - Monitoring and safety control system for offshore wind power hydrogen production and energy storage system - Google Patents
Monitoring and safety control system for offshore wind power hydrogen production and energy storage system Download PDFInfo
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- CN214707179U CN214707179U CN202120989256.5U CN202120989256U CN214707179U CN 214707179 U CN214707179 U CN 214707179U CN 202120989256 U CN202120989256 U CN 202120989256U CN 214707179 U CN214707179 U CN 214707179U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/14—Energy storage units
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Abstract
The utility model relates to a marine wind power hydrogen production and energy storage system monitoring and safety control system, include: the system comprises a low-voltage bus, an energy management system, a monitoring system, an energy storage coordination controller, an energy storage system, a hydrogen production system, an offshore wind power system and an electric signal acquisition device; the energy storage system is respectively connected with the low-voltage bus, the energy management system, the monitoring system and the energy storage coordination controller, the hydrogen production system is respectively connected with the low-voltage bus and the energy storage coordination controller, and the energy storage coordination controller is respectively connected with the offshore wind power system, the energy management system, the monitoring system, the electric signal acquisition device and the grid-connected point. The utility model discloses a carry out data acquisition to each system and can realize energy management, dispatch and control to carry out the safety protection control, solve the influence of marine wind power randomness and volatility to hydrogen manufacturing system, applicable in the solution scheme that extensive marine wind power is incorporated into the power networks, the implementation is strong.
Description
Technical Field
The utility model relates to a new forms of energy electricity generation and hydrogen manufacturing field, more specifically say, relate to a marine wind power hydrogen manufacturing and energy storage system monitoring and safety control system.
Background
Offshore wind power is one of the most scaled potential renewable energy sources. The offshore wind power generation system can be developed for regions with long coastlines, wide sea areas and abundant offshore wind resources, and has huge scale. The vigorous development of sea wind power can promote the adjustment of energy structure and reduce environmental pollution.
With the rapid development of offshore wind power, the problem of consumption of offshore wind power is increasingly prominent, and when offshore wind power in local areas is intensively developed in a large scale until installed capacity accounts for a large proportion of a power grid, adverse effects can be caused on the power quality, frequency and voltage stability and safety of the power grid. The hydrogen production of the offshore wind power is realized through water electrolysis, and the problem of large-scale consumption of wind power resources can be solved.
Due to the fluctuation and randomness of offshore wind power, the output power (current) fluctuation of the offshore wind power brings a challenge to hydrogen production by water electrolysis. In order to ensure that the hydrogen production branch current does not fluctuate or fluctuates within an allowable range, increasing the electrical energy storage is a feasible solution. The electric energy storage has strong capability of tracking load change, high response speed and accurate control, has double effects of bidirectional regulation capability and smooth power, and is a key regulation power supply in the hydrogen production process.
The hydrogen production and energy storage system has a large amount of data to be acquired, processed, stored and displayed and is used for video tape protection control. The system data acquisition mainly comprises data of a hydrogen production system, an energy storage system, auxiliary equipment and the like, wherein the energy storage system comprises data such as battery states, energy storage converter (PCS) data and fault codes, the hydrogen production system comprises grid-connected data at the alternating current side of the hydrogen production device, hydrogen production quantity, electrolytic bath voltage, electrolytic bath current and the like, and other data mainly comprises grid-connected point voltage, current, power and the like.
The safety protection control system mainly comprises a hydrogen production subsystem safety protection, an energy storage subsystem safety protection and the like.
In the existing scheme, the problem of energy supply of a remote island microgrid is mainly solved, no specific scheme is provided for coefficient data acquisition and safety control, the scheme cannot be applied to a large-scale offshore wind power grid-connected consumption scheme, and the implementability is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a marine wind power hydrogen manufacturing and energy storage system monitoring and safety control system is provided.
The utility model provides a technical scheme that its technical problem adopted is: a monitoring and safety control system for an offshore wind power hydrogen production and energy storage system is constructed, and comprises: the system comprises a low-voltage bus, an energy management system, a monitoring system, an energy storage coordination controller, an energy storage system, a hydrogen production system, an offshore wind power system and an electric signal acquisition device;
the energy storage system is respectively connected with the low-voltage bus, the energy management system, the monitoring system and the energy storage coordination controller, the hydrogen production system is respectively connected with the low-voltage bus and the energy storage coordination controller, and the energy storage coordination controller is respectively connected with the offshore wind power system, the energy management system, the monitoring system, the electric signal acquisition device and a grid-connected point;
the energy management system and the monitoring system receive energy storage information of the energy storage system, hydrogen production information of the hydrogen production system, wind power information of the offshore wind power system and grid connection information of the grid connection point through the energy storage coordination controller; the energy storage coordination controller collects, processes and analyzes the data of the energy storage system, the data of the offshore wind power system, the data of the hydrogen production system and the data collected by the electric signal collecting device, and performs protection control on the energy storage system, the offshore wind power system and the hydrogen production system respectively.
The monitoring and safety control system for the offshore wind power hydrogen production and energy storage system of the utility model also comprises: switching devices and auxiliary equipment;
the switch device is connected with the energy storage coordination controller, and the auxiliary equipment is connected with the switch device and the low-voltage bus;
and the switching device is switched on or off according to the control of the energy storage coordination controller so as to control the work of the energy storage system, the hydrogen production system and the auxiliary equipment.
In the system for monitoring and controlling the hydrogen production and energy storage system of offshore wind power plant, the electric signal acquisition device comprises: the electric energy meter comprises a first sensor, a second sensor, a third sensor, a fourth sensor and an electric energy meter;
the switching device includes: the first switch, the second switch, the third switch, the fourth switch and the fifth switch;
the second end of the second switch is connected with the low-voltage bus, the control end of the second switch is connected with the energy storage coordination controller, the first end of the second switch sequentially passes through the first switch, the first sensor and the electric energy meter to reach a power grid, the control end of the first switch is connected with the energy storage coordination controller, and the signal output ends of the first sensor and the electric energy meter are connected with the energy storage coordination controller;
the first end of the second sensor is connected with the low-voltage bus, the second end of the second sensor is connected with the first end of the third switch, and the control end of the third switch and the signal output end of the second sensor are connected with the energy storage coordination controller;
the first end of the third sensor is connected with the low-voltage bus, the second end of the third sensor is connected with the first end of the fourth switch, the control end of the fourth switch and the signal output end of the third sensor are connected with the energy storage coordination controller, and the second end of the fourth switch is connected with the hydrogen production system;
the first end of the fourth sensor is connected with the low-voltage bus, the second end of the fourth sensor is connected with the first end of the fifth switch, the control end of the fifth switch and the signal output end of the fourth sensor are connected with the energy storage coordination controller, and the second end of the fifth switch is connected with the auxiliary equipment.
In the system for hydrogen production by offshore wind power and monitoring and safety control of energy storage system, the energy storage system comprises: the system comprises an energy storage converter, a battery management system and an energy storage battery;
the first end of the energy storage converter is connected with the second end of the third switch, the second end of the energy storage converter is connected with the first end of the battery management system, the third end of the energy storage converter is connected with the energy storage coordination controller, the second end of the battery management system is connected with the energy storage battery, and the data output end of the battery management system is connected with the energy management system and the monitoring system.
The monitoring and safety control system for the offshore wind power hydrogen production and energy storage system of the utility model also comprises: a fire protection system;
and the fire fighting system is connected with the battery management system through an RS485 communication line.
The monitoring and safety control system for the offshore wind power hydrogen production and energy storage system of the utility model also comprises: switching equipment;
the switching equipment is respectively connected with the energy management system, the energy storage coordination controller, the battery management system and the monitoring system and is used for finishing data interaction among the energy management system, the energy storage coordination controller, the battery management system and the monitoring system.
In the system for monitoring and controlling the hydrogen production and energy storage system of offshore wind power plant, the switching equipment comprises: a switch and a communication manager;
the switch is respectively communicated with the battery management system, the energy storage coordination controller and the monitoring system, and the switch is also communicated with the energy management system through the communication management machine.
In the system for hydrogen production by offshore wind power and monitoring and safety control of energy storage system, the energy storage system comprises: the safety protection of the battery management system, the safety protection of the energy storage converter and the safety protection of the container;
the safety protection of the battery management system comprises: the battery management system monitors battery information of the energy storage battery in real time and starts safety protection of half power limit, zero power limit and fault removal when the energy storage battery is in fault or abnormal;
the safety protection of the energy storage converter comprises the following steps: the energy storage converter monitors the working state of the energy storage converter and the states of the energy storage battery and the alternating current power grid in real time, stops working and outputs an alarm signal when a fault or an abnormality is monitored;
the safety protection of the container comprises the following steps: thermal management protection, safety monitoring and early warning protection, fire safety protection and fire extinguishing protection.
In the system for hydrogen production by offshore wind power and monitoring and safety control of energy storage system, the alarm information outputted by the energy storage converter comprises: any one or more of alternating current over/under voltage protection, alternating current over/under frequency protection, alternating current over current protection, negative sequence voltage protection, island detection protection, direct current over voltage protection, direct current under voltage protection, direct current side polarity reversal protection, direct current over current protection, insulation monitoring, drive protection, PT abnormity protection, auxiliary power supply protection, over temperature protection, communication fault protection and external interlocking protection.
Implement the utility model discloses a marine wind power hydrogen manufacturing and energy storage system monitoring and safety control system has following beneficial effect: the method comprises the following steps: the system comprises a low-voltage bus, an energy management system, a monitoring system, an energy storage coordination controller, an energy storage system, a hydrogen production system, an offshore wind power system and an electric signal acquisition device; the energy storage system is respectively connected with the low-voltage bus, the energy management system, the monitoring system and the energy storage coordination controller, the hydrogen production system is respectively connected with the low-voltage bus and the energy storage coordination controller, and the energy storage coordination controller is respectively connected with the offshore wind power system, the energy management system, the monitoring system, the electric signal acquisition device and the grid-connected point. The utility model discloses a carry out data acquisition to each system and can realize energy management, dispatch and control to carry out the safety protection control, solve the influence of marine wind power randomness and volatility to hydrogen manufacturing system, applicable in the solution scheme that extensive marine wind power is incorporated into the power networks, the implementation is strong.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a system block diagram of a monitoring and safety control system for an offshore wind power hydrogen production and energy storage system provided by an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a system block diagram of the monitoring and safety control system for the offshore wind power hydrogen production and energy storage system provided by the present invention. The control system adopts practical and reliable safety protection control measures through the collection and analysis of a large amount of data, can effectively solve the influence of the randomness and the volatility of the offshore wind power on the hydrogen production system 8, and is suitable for a large-scale offshore wind power grid-connected digestion scheme.
Specifically, as shown in fig. 1, the monitoring and safety control system for the offshore wind power hydrogen production and energy storage system comprises: the system comprises a low-voltage bus 17, an energy management system 1, a monitoring system 2, an energy storage coordination controller 4, an energy storage system, a hydrogen production system 8, an offshore wind power system 23 and an electric signal acquisition device.
The energy storage system is respectively connected with the low-voltage bus 17, the energy management system 1, the monitoring system 2 and the energy storage coordination controller 4, the hydrogen production system 8 is respectively connected with the low-voltage bus 17 and the energy storage coordination controller 4, and the energy storage coordination controller 4 is respectively connected with the offshore wind power system 23, the energy management system 1 and the monitoring system 2, and the electric signal acquisition device and the grid-connected point.
The energy management system 1 and the monitoring system 2 receive energy storage information of an energy storage system, hydrogen production information of a hydrogen production system 8, wind power information of an offshore wind power system 23 and grid-connected information of a grid-connected point through an energy storage coordination controller 4; the energy storage coordination controller 4 collects, processes and analyzes the data of the energy storage system, the data of the offshore wind power system 23, the data of the hydrogen production system 8 and the data collected by the electric signal collection device, and respectively performs protection control on the energy storage system, the offshore wind power system 23 and the hydrogen production system 8.
Further, as shown in fig. 1, the monitoring and safety control system for the offshore wind power hydrogen production and energy storage system further includes: switching means and auxiliary equipment 9. Wherein the switching device is connected with the energy storage coordination controller 4, and the auxiliary equipment 9 is connected with the switching device and the low-voltage bus 17. The switching device is switched on or off according to the control of the energy storage coordination controller 4 so as to control the work of the energy storage system, the hydrogen production system 8 and the auxiliary equipment 9.
Specifically, the energy management system 1 is mainly used for analyzing, managing and scheduling energy of the energy storage system, the hydrogen production system 8 and the offshore wind power system 23, and controlling and adjusting the energy storage system, the hydrogen production system 8 and the offshore wind power system 23 through the energy storage coordination controller 4. The monitoring system 2 monitors the energy storage system, the hydrogen production system 8, and the offshore wind power system 23.
Further, as shown in fig. 1, the monitoring and safety control system for the offshore wind power hydrogen production and energy storage system further includes: and the fire fighting system 10 is connected with the battery management system 6 through an RS485 communication line. Optionally, the fire fighting system 10 includes fire fighting equipment and an air conditioner.
Further, as shown in fig. 1, the monitoring and safety control system for the offshore wind power hydrogen production and energy storage system further includes: switching equipment; the switching equipment is respectively connected with the energy management system 1, the energy storage coordination controller 4, the battery management system 6 and the monitoring system 2, and is used for finishing data interaction among the energy management system 1, the energy storage coordination controller 4, the battery management system 6 and the monitoring system 2.
Specifically, as shown in fig. 1, the transfer device includes: a switch 3 and a communication manager 22. The switch 3 communicates with the battery management system 6, the energy storage coordination controller 4 and the monitoring system 2, respectively, and the switch 3 also communicates with the energy management system 1 through the communication manager 22. The switch 3 communicates and interacts data with the battery management system 6, the energy storage coordination controller 4, the monitoring system 2 and the communication manager 22 through network cables. The communication manager 22 communicates with the energy management system 1 through a network cable.
As shown in fig. 1, the electrical signal acquisition apparatus includes: a first sensor 18, a second sensor 19, a third sensor 20, a fourth sensor 21 and the electric energy meter 11. The switching device includes: a first switch 12, a second switch 13, a second sensor 14, a fourth switch 15 and a fifth switch 16.
The second end of the second switch 13 is connected with a low-voltage bus 17, the control end of the second switch 13 is connected with the energy storage coordination controller 4, the first end of the second switch 13 sequentially passes through the first switch 12, the first sensor 18 and the electric energy meter 11 to reach a power grid, the control end of the first switch 12 is connected with the energy storage coordination controller 4, and the signal output ends of the first sensor 18 and the electric energy meter 11 are connected with the energy storage coordination controller 4; a first end of a second sensor 19 is connected with the low-voltage bus 17, a second end of the second sensor 19 is connected with a first end of a second sensor 14, and a control end of the second sensor 14 and a signal output end of the second sensor 19 are connected with the energy storage coordination controller 4; the first end of the third sensor 20 is connected with the low-voltage bus 17, the second end of the third sensor 20 is connected with the first end of the fourth switch 15, the control end of the fourth switch 15 and the signal output end of the third sensor 20 are connected with the energy storage coordination controller 4, and the second end of the fourth switch 15 is connected with the hydrogen production system 8; a first end of the fourth sensor 21 is connected with the low-voltage bus 17, a second end of the fourth sensor 21 is connected with a first end of the fifth switch 16, a control end of the fifth switch 16 and a signal output end of the fourth sensor 21 are connected with the energy storage coordination controller 4, and a second end of the fifth switch 16 is connected with the auxiliary equipment 9.
The first switch 12 is an isolating switch to protect the device, and the second switch 13 is controlled to be on-off. When the power is on, the first switch 12 is closed firstly, and then the second switch 13 is closed; when the power is off, the second switch 13 is turned off first, and then the first switch 12 is turned off. As shown in fig. 1, when the power is turned on, electricity can be taken from the power grid to the energy storage system, the hydrogen production system 8 and the auxiliary equipment 9, and in addition, the energy storage system can also supply power to the power grid in the reverse direction. The second sensor 14 plays a role in on-off control so as to control the energy storage system to be connected to the low-voltage bus 17. The fourth switch 15 plays a role in on-off control so as to control the hydrogen production system 8 to be connected to the low-voltage bus 17. The fifth switch 16 is used for controlling on-off so as to control the auxiliary equipment 9 to be connected to the low-voltage bus 17. The grid-connected point is a connection point of a power grid and the offshore wind power hydrogen production and energy storage system monitoring and safety control system.
Specifically, as shown in fig. 1, the energy storage system includes: the system comprises an energy storage converter 7, a battery management system 6 and an energy storage battery 5.
The first end of the energy storage converter 7 is connected with the second end of the second sensor 14, the second end of the energy storage converter 7 is connected with the first end of the battery management system, the third end of the energy storage converter 7 is connected with the energy storage coordination controller 4, the second end of the battery management system is connected with the energy storage battery 5, and the data output end of the battery management system 6 is connected with the energy management system 1 and the monitoring system 2.
In some embodiments, the energy storage coordination controller 4 is connected to the first sensor 18, the second sensor 19, the third sensor 20, the fourth sensor 21 and the electric energy meter 11 via signal collection lines and collects electric signals. The energy storage coordination controller 4 is in data transmission with the exchanger 3 through a communication line (network cable), controls the energy storage converter 7 and the hydrogen production system 8 through an RS485 communication line, is connected with the offshore wind power system 23 through an optical cable, and is connected with fire-fighting equipment and an air conditioner through an RS485 communication line. The battery management system 6 is connected with the energy storage converter 7 through a CAN communication line, the other path is connected with the switch 3 through a network, and the communication rule is MODBUS.
Further, the energy storage coordination controller 4 is connected with the switch 3 through a network cable, and the communication specification is about an electric power 104 specification. The switch 3 is connected with the monitoring system 2 through a network cable, and the communication specification is about a power 104 specification. The switch 3 is connected with the communication management machine through a network cable, and the communication specification is about an electric power 104 specification. The communication management machine is connected with the energy management system 1 through a network cable, and the communication specification is about an electric power 104 specification.
The energy storage battery 5 is connected with the battery management system 6 through a power cable; the battery management system 6 is connected with the energy storage converter 7 through a power cable; the energy storage converter 7 is connected with the second sensor 14 through a power cable; the second sensor 14 is connected to the low voltage bus 17(380V) by a power cable, and the second sensor 19 is connected in series between the second sensor 14 and the low voltage bus 17.
The hydrogen production system 8 is connected with a fourth switch 15 through a power cable; the fourth switch 15 is connected with the low-voltage bus 17 through a power cable; the third sensor 20 is connected in series between the fourth switch 15 and the low voltage bus 17.
The auxiliary device 9 is connected with the fifth switch 16 through a power cable; the fifth switch 16 is connected with the low-voltage bus 17 through a power cable; a fourth sensor 21 is connected in series between the fifth switch 16 and the low voltage bus 17.
Further, in the embodiment of the present invention, the energy storage information of the energy storage system includes but is not limited to: the battery management system comprises a battery charging and discharging state, three-phase voltage at a PCS (Power System controller) alternating current side, three-phase current at the PCS alternating current side, frequency at the PCS alternating current side, active power at the PCS, reactive power at the PCS, voltage at the PCS direct current side, current at the PCS direct current side, IGBT (insulated Gate Bipolar transistor) temperature monitoring, single battery voltage, single battery temperature, a battery stack SOC (state of charge) value, average battery stack temperature, various fault codes (including single fault codes) of a storage battery, PCS fault codes, other information uploaded by the battery management system 6 and other information uploaded by a PCS converter.
Hydrogen production information for hydrogen production system 8 includes, but is not limited to: the system comprises a hydrogen production device AC side grid-connected voltage, a hydrogen production device AC side grid-connected current, a hydrogen production amount, an electrolytic cell pressure, an electrolytic cell temperature, an electrolytic cell voltage, an electrolytic cell current, a hydrogen production system 8 fault, a hydrogen tank pressure, a hydrogen production device system pressure display/adjustment, a water electrolysis hydrogen production device hydrogen side/oxygen side pressure difference display/adjustment, a hydrogen compressor air inlet pressure/exhaust pressure and a water electrolysis cell alkali liquor temperature display/adjustment.
Wind power information for the offshore wind power system 23 includes, but is not limited to: the voltage on the alternating current side of the offshore wind power system 23, the current on the alternating current side of the offshore wind power system 23, the frequency on the alternating current side of the offshore wind power system 23 and the power on the alternating current side of the offshore wind power system 23.
The information of the point-of-presence includes, but is not limited to: grid-connected point three-phase voltage, grid-connected point three-phase current, grid-connected point power, grid-connected point and grid-connected point electric energy consumption.
The electrical signal collected by the electrical signal collecting device includes but is not limited to: voltage, current, power, etc.
In the embodiment of the utility model provides an in, energy storage system includes: the safety protection of the battery management system 6, the safety protection of the energy storage converter 7 and the safety protection of the container.
The safety protection of the battery management system 6 includes: the battery management system 6 monitors the battery information of the energy storage battery 5 in real time and starts the safety protection of half power limit-zero power limit-fault removal when the energy storage battery 5 has a fault or is abnormal; the safety protection of the energy storage converter 7 comprises: the energy storage converter 7 monitors the working state of the converter and the states of the energy storage battery 5 and the alternating current power grid in real time, stops working and outputs an alarm signal when a fault or an abnormality is monitored; the safety protection of the container comprises the following steps: thermal management protection, safety monitoring and early warning protection, fire safety protection and fire extinguishing protection.
In the embodiment of the utility model, the safety protection of the battery management system 6 has a three-level protection architecture, that is, when the battery is over-charged and over-discharged, the temperature is abnormal, and the like, the output power is reduced by half firstly, and the monitoring is continued; when the power is in a half-power state and is still abnormal, reducing the output power to zero; when the power is zero and the power is still abnormal, the switch is cut off to directly remove the fault. Furthermore, the battery management system 6 also has a communication abnormality protection function, that is, when the communication between the battery management system 6 and the energy storage converter 7 is abnormal, the battery management system 6 automatically enters a protection state, so that the fault cannot be further expanded, and the occurrence of a hazard accident is prevented.
The embodiment of the utility model provides an in, but energy storage converter 7 real-time detection self operating condition and energy storage battery 5 and alternating current network's state, when detecting trouble and unusual, energy storage converter 7 stop work to send alarm signal.
Optionally, the alarm information output by the energy storage converter 7 includes but is not limited to: any one or more of alternating current over/under voltage protection, alternating current over/under frequency protection, alternating current over current protection, negative sequence voltage protection, island detection protection, direct current over voltage protection, direct current under voltage protection, direct current side polarity reversal protection, direct current over current protection, insulation monitoring, drive protection, PT abnormity protection, auxiliary power supply protection, over temperature protection, communication fault protection and external interlocking protection.
In the embodiment of the utility model provides an in, the safety protection of container includes but not limited to: thermal management safety protection, safety monitoring and early warning safety protection and fire extinguishing treatment safety protection.
Wherein, in the thermal management safety protection, the highest point and the lowest point of the temperature in the battery cluster can be collected. The heat dissipation power of the air conditioner is greater than the total heat generation power of the battery cells in the container energy storage system under normal charge-discharge circulation, and meanwhile, the cooling dead zone in the container can be eliminated, so that the phenomenon that a single battery cell or a plurality of battery cells are aged and damaged due to overhigh local temperature is prevented.
In safety monitoring and early warning safety protection, when different types of energy storage batteries 5 are out of control due to heat, the surface temperatures of the energy storage batteries have different heating trends and critical absolute values, appropriate heating rates and absolute temperature values are set as temperature early warning thresholds, multi-stage early warning is set according to the danger degree, and coupling gas early warning is performed corresponding to different acousto-optic signals; sending out an early warning signal before the battery is out of control due to heat, and reserving safe time for escape of people; the early warning signals of the detector are transmitted to the monitoring system 2 in a centralized way to judge the threshold value, when the dangerous condition is judged, the early warning signals are transmitted to the monitoring system 2, and the acousto-optic early warning signals are sent out. A matched gas detection (carbon monoxide, hydrogen and the like) system linked with the fire fighting system 10. Detectors include, but are not limited to, smoke detectors, fire detectors, and temperature detectors, among others.
In the safety protection of fire extinguishing treatment, the energy storage battery 5 still can continuously generate heat after open fire is extinguished, and if effective cooling or fire extinguishing measures are not carried out, re-combustion can occur. According to the battery reburning characteristics, the battery is extinguished by using the perfluorohexanone or the heptafluoropropane, so that the surface temperature of the battery is effectively reduced, and the battery reburning is prevented. Wherein, can adopt the manual mode to put out a fire when putting out a fire and handle, perhaps adopt automatic mode to put out a fire.
The embodiment of the utility model provides an in, still be equipped with fire-fighting equipment in the container, wherein, fire-fighting equipment combines together with the early warning, adopts the fire control probe that can effectively report to the police, prevents the wrong report and misses and report. When setting up, can arrange the position and the interval of probe according to container volume and the quantity of the incasement battery.
It should be noted that, in the embodiment of the present invention, the monitoring and safety control system for the offshore wind power hydrogen production and energy storage system in fig. 1 is integrated in the container except for the offshore wind power system 23, the hydrogen production system 8, the auxiliary device 9, and the power grid.
The embodiment of the utility model provides an in, millisecond level quick response can be realized to data acquisition's upload and subordinate. Further, the utility model discloses ingenious hydrogen manufacturing system 8 and energy storage system parallel operation can be through energy storage system's regulatory effect, and the current waveform of level and smooth oxygen deficiency system improves hydrogen manufacturing system 8's efficiency, still can prolong oxygen deficiency system's life-span. Specifically, when the electric energy generated by the offshore wind power is used for providing the electric energy for the hydrogen production system 8 to produce hydrogen, due to the characteristics of the offshore wind power (large and small sea wind), when the sea wind is small or even has no wind, the electric energy can be provided for the hydrogen production system 8 through the energy storage system, and when the sea wind is too large, the redundant electric energy can be absorbed through the energy storage system, so that the purpose of smoothing the current waveform of the hydrogen production system 8 is achieved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and 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.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and implement the present invention accordingly, which can not limit the protection scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides an offshore wind power hydrogen production and energy storage system monitoring and safety control system which characterized in that includes: the system comprises a low-voltage bus, an energy management system, a monitoring system, an energy storage coordination controller, an energy storage system, a hydrogen production system, an offshore wind power system and an electric signal acquisition device;
the energy storage system is respectively connected with the low-voltage bus, the energy management system, the monitoring system and the energy storage coordination controller, the hydrogen production system is respectively connected with the low-voltage bus and the energy storage coordination controller, and the energy storage coordination controller is respectively connected with the offshore wind power system, the energy management system, the monitoring system, the electric signal acquisition device and a grid-connected point;
the energy management system and the monitoring system receive energy storage information of the energy storage system, hydrogen production information of the hydrogen production system, wind power information of the offshore wind power system and grid connection information of the grid connection point through the energy storage coordination controller; the energy storage coordination controller collects, processes and analyzes the data of the energy storage system, the data of the offshore wind power system, the data of the hydrogen production system and the data collected by the electric signal collecting device, and performs protection control on the energy storage system, the offshore wind power system and the hydrogen production system respectively.
2. The offshore wind power hydrogen production and energy storage system monitoring and safety control system of claim 1, further comprising: switching devices and auxiliary equipment;
the switch device is connected with the energy storage coordination controller, and the auxiliary equipment is connected with the switch device and the low-voltage bus;
and the switching device is switched on or off according to the control of the energy storage coordination controller so as to control the work of the energy storage system, the hydrogen production system and the auxiliary equipment.
3. The offshore wind power hydrogen production and energy storage system monitoring and safety control system of claim 2, wherein the electrical signal acquisition device comprises: the electric energy meter comprises a first sensor, a second sensor, a third sensor, a fourth sensor and an electric energy meter;
the switching device includes: the first switch, the second switch, the third switch, the fourth switch and the fifth switch;
the second end of the second switch is connected with the low-voltage bus, the control end of the second switch is connected with the energy storage coordination controller, the first end of the second switch sequentially passes through the first switch, the first sensor and the electric energy meter to reach a power grid, the control end of the first switch is connected with the energy storage coordination controller, and the signal output ends of the first sensor and the electric energy meter are connected with the energy storage coordination controller;
the first end of the second sensor is connected with the low-voltage bus, the second end of the second sensor is connected with the first end of the third switch, and the control end of the third switch and the signal output end of the second sensor are connected with the energy storage coordination controller;
the first end of the third sensor is connected with the low-voltage bus, the second end of the third sensor is connected with the first end of the fourth switch, the control end of the fourth switch and the signal output end of the third sensor are connected with the energy storage coordination controller, and the second end of the fourth switch is connected with the hydrogen production system;
the first end of the fourth sensor is connected with the low-voltage bus, the second end of the fourth sensor is connected with the first end of the fifth switch, the control end of the fifth switch and the signal output end of the fourth sensor are connected with the energy storage coordination controller, and the second end of the fifth switch is connected with the auxiliary equipment.
4. The offshore wind power hydrogen production and energy storage system monitoring and safety control system of claim 3, wherein the energy storage system comprises: the system comprises an energy storage converter, a battery management system and an energy storage battery;
the first end of the energy storage converter is connected with the second end of the third switch, the second end of the energy storage converter is connected with the first end of the battery management system, the third end of the energy storage converter is connected with the energy storage coordination controller, the second end of the battery management system is connected with the energy storage battery, and the data output end of the battery management system is connected with the energy management system and the monitoring system.
5. The offshore wind power hydrogen production and energy storage system monitoring and safety control system of claim 4, further comprising: a fire protection system;
and the fire fighting system is connected with the battery management system through an RS485 communication line.
6. The offshore wind power hydrogen production and energy storage system monitoring and safety control system of claim 4, further comprising: switching equipment;
the switching equipment is respectively connected with the energy management system, the energy storage coordination controller, the battery management system and the monitoring system and is used for finishing data interaction among the energy management system, the energy storage coordination controller, the battery management system and the monitoring system.
7. The offshore wind power hydrogen production and energy storage system monitoring and safety control system of claim 6, wherein the transfer equipment comprises: a switch and a communication manager;
the switch is respectively communicated with the battery management system, the energy storage coordination controller and the monitoring system, and the switch is also communicated with the energy management system through the communication management machine.
8. The offshore wind power hydrogen production and energy storage system monitoring and safety control system of claim 4, wherein the energy storage system comprises: the safety protection of the battery management system, the safety protection of the energy storage converter and the safety protection of the container;
the safety protection of the battery management system comprises: the battery management system monitors battery information of the energy storage battery in real time and starts safety protection of half power limit, zero power limit and fault removal when the energy storage battery is in fault or abnormal;
the safety protection of the energy storage converter comprises the following steps: the energy storage converter monitors the working state of the energy storage converter and the states of the energy storage battery and the alternating current power grid in real time, stops working and outputs an alarm signal when a fault or an abnormality is monitored;
the safety protection of the container comprises the following steps: thermal management protection, safety monitoring and early warning protection, fire safety protection and fire extinguishing protection.
9. The offshore wind power hydrogen production and energy storage system monitoring and safety control system according to claim 8, wherein the alarm information output by the energy storage converter comprises: any one or more of alternating current over/under voltage protection, alternating current over/under frequency protection, alternating current over current protection, negative sequence voltage protection, island detection protection, direct current over voltage protection, direct current under voltage protection, direct current side polarity reversal protection, direct current over current protection, insulation monitoring, drive protection, PT abnormity protection, auxiliary power supply protection, over temperature protection, communication fault protection and external interlocking protection.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115079607A (en) * | 2022-06-21 | 2022-09-20 | 烟台东德实业有限公司 | Active safety control system and method |
| CN115622114A (en) * | 2022-09-01 | 2023-01-17 | 国网浙江省电力有限公司杭州供电公司 | Flexible scheduling system and method for multi-energy coupling comprehensive energy system |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115079607A (en) * | 2022-06-21 | 2022-09-20 | 烟台东德实业有限公司 | Active safety control system and method |
| CN115622114A (en) * | 2022-09-01 | 2023-01-17 | 国网浙江省电力有限公司杭州供电公司 | Flexible scheduling system and method for multi-energy coupling comprehensive energy system |
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