CN113315215A - Main pump emergency power supply device based on super capacitor energy storage - Google Patents
Main pump emergency power supply device based on super capacitor energy storage Download PDFInfo
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- CN113315215A CN113315215A CN202110680530.5A CN202110680530A CN113315215A CN 113315215 A CN113315215 A CN 113315215A CN 202110680530 A CN202110680530 A CN 202110680530A CN 113315215 A CN113315215 A CN 113315215A
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- energy storage
- main pump
- power supply
- super capacitor
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Business, Economics & Management (AREA)
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- Inverter Devices (AREA)
Abstract
The invention relates to the technical field of super capacitors, in particular to a main pump emergency power supply device based on super capacitor energy storage, which comprises: the main controller module monitors a power grid supplying power to a main pump motor in real time through the electric quantity detection module, tracks the frequency, the phase and the amplitude of the grid voltage through a phase locking technology, and the isolating switch and the circuit breaker are in a closed state at the moment; when the main controller module monitors a grid power failure, the electric energy in the super capacitor energy storage module is converted into alternating current electric energy required by the main pump motor through the DC/DC power conversion module and the DC/AC power conversion module, the main pump motor is powered, and uninterrupted power supply is realized.
Description
Technical Field
The invention relates to the technical field of super capacitors, in particular to a main pump emergency power supply device based on super capacitor energy storage.
Background
The main pump motor emergency power supply widely adopted at present mainly adopts a flywheel energy storage mode and a battery energy storage mode. The flywheel energy storage mode is a traditional emergency power supply energy storage mode, and has the problems that a large flywheel is needed when an emergency power supply system wants to obtain large energy under the condition of low speed of an energy storage generator, and the heavy flywheel brings harm to a generator shaft system; in addition, the flywheel which is coaxial with the generator is used for storing energy, and when the generator is directly connected to a power grid in parallel, constant-frequency power supply cannot be guaranteed in principle. The storage battery is used as an energy storage system, and charging and discharging maintenance needs to be carried out regularly under the condition that the storage battery does not work for a long time, otherwise, the service life of the storage battery is influenced, and the system is also unfavorable in the aspect of long-term reliability.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a main pump emergency power supply device based on super-capacitor energy storage.
In order to achieve the purpose, the invention adopts the following technical scheme:
main pump emergency power supply unit based on super capacitor energy storage, emergency power supply unit includes: the system comprises a main controller module, an electric quantity detection module, a super capacitor energy storage module, a super capacitor CMS module, an isolating switch, a circuit breaker and a power conversion module;
the main controller module monitors a power grid supplying power to the main pump motor in real time through the electric quantity detection module, tracks the frequency, the phase and the amplitude of the voltage of the power grid through a phase-locking technology, and at the moment, the isolating switch and the circuit breaker are in a closed state;
the power conversion module consists of a DC/DC power conversion module, a DC/AC power conversion module and a DC bridge arm side support capacitor module, a plurality of half-bridge type DC/DC power conversion modules are connected in parallel for operation, and a uniform phase shifting mode is adopted when PWM control of a switching device is carried out between each half bridge;
when the main controller module monitors a grid power failure, the electric energy in the super capacitor energy storage module is converted into alternating current electric energy required by the main pump motor through the DC/DC power conversion module and the DC/AC power conversion module, the main pump motor is powered, and uninterrupted power supply is realized.
Preferably, the main controller module adopts a PAC or a PLC as a core unit to realize control of the entire apparatus.
Preferably, the super capacitor is used as an energy storage element to form a super capacitor energy storage module, and the super capacitor CMS module is configured to control the voltage and the SOC of the super capacitor energy storage module.
Preferably, the filter inductors of the DC/DC power converter and the DC/AC power converter both adopt a ring-shaped iron core structure, and adopt copper wires wound around coils.
Preferably, the sensors in each electric quantity detection module in the power conversion module perform detection of the sensors by a measured value comparison method, and the sensors with large differences are found and give an alarm.
Preferably, the main pump motor emergency power supply device adopts a system structure that super capacitors are used for energy storage, and the main pump motor emergency power supply device adopting the structure is in seamless connection with the power supply voltage of a power grid.
The invention has the beneficial effects that:
1. the super capacitor energy storage charging and discharging rapidity is utilized to supply power to the main pump motor when the power grid fails, so that the main pump motor can continue to operate within a certain time when the power grid fails.
2. The sudden stop of the main pump motor can be effectively avoided when the power grid fails, and the service life of the main pump motor is prolonged.
3. The motor of the main pump has time to complete the protection shutdown operation, and the reliability of the motor of the main pump is greatly improved.
In conclusion, the invention can be applied to the field of main pump motors with power supplied by a power grid, and has wide application prospect and higher popularization value.
Drawings
FIG. 1 is a block diagram of a main pump emergency power supply device based on super capacitor energy storage;
FIG. 2 is a block diagram of a master controller module of an embodiment;
fig. 3 is a block diagram of the structure of the CMS module of the super capacitor according to the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Main pump emergency power supply unit based on super capacitor energy storage, main pump emergency power supply unit based on super capacitor energy storage, emergency power supply unit includes: the system comprises a main controller module 1, an electric quantity detection module 2, a super capacitor energy storage module 6, a super capacitor CMS module 7, an isolating switch 8, a circuit breaker 9 and a power conversion module 10;
the main controller module 1 monitors a power grid supplying power to the main pump motor 11 in real time through the electric quantity detection module 2, tracks the frequency, the phase and the amplitude of the voltage of the power grid through a phase locking technology, and at the moment, the isolating switch 8 and the circuit breaker 9 are in a closed state;
the power conversion module 10 is composed of a DC/DC power conversion module 3, a DC/AC power conversion module 4 and a direct current bridge arm side support capacitor module 5, a plurality of half-bridge type DC/DC power conversion modules 3 are connected in parallel for operation, and a uniform phase shifting mode is adopted when PWM control of a switching device is carried out between half-bridges;
when the main controller module 1 monitors a grid power failure, the electric energy in the super capacitor energy storage module 6 is converted into alternating current electric energy required by the main pump motor 11 through the DC/DC power conversion module 3 and the DC/AC power conversion module 4, the main pump motor 11 is powered, and uninterrupted power supply is realized.
The super capacitor CMS module 7 is connected with the super capacitor energy storage module 6, and the super capacitor CMS module 7 is used for ensuring the safe and reliable operation of the super capacitor energy storage module 6 and prolonging the service life of an energy storage system. The function is realized mainly through the following technical approaches: detecting and balancing the voltage of each super capacitor and each energy storage unit, so that the super capacitors and the energy storage units work in a balanced manner within a normal working voltage range; detecting the temperature of each part of the energy storage system and controlling a ventilation fan to work so that the capacitor works in a proper temperature range; providing multi-stage early warning of voltage and temperature and overvoltage and overheating protection output; the capacity and the internal resistance monitoring and the hardware self-diagnosis capability of the capacitor are provided; the bus communication function is provided, so that the coordination work with an application system is facilitated; the remote monitoring capability is provided, and a user can conveniently and comprehensively know the state of the energy storage system in time.
The super capacitor energy storage module 6 is connected with the DC/DC power conversion module 3, and the DC/DC power conversion module 3 realizes the charging and discharging of the super capacitor energy storage module 6. The direct current bridge arm side supporting voltage module 5 is connected with the DC/DC power conversion module 3 and the DC/AC power conversion module 4, and smooth filtering of the direct current bus voltage is achieved. The DC/AC power conversion module 4 is connected to the main pump motor 11 through a circuit breaker 9 and a disconnector 8, and is capable of supplying electric power of a desired frequency and voltage to the main pump motor 11.
As shown in fig. 2, the main controller module 1 includes: the touch LCD module, analog input module, bus communication module, digital input module, digital output module. The related signal of the electric quantity detection module 2 is transmitted to the main controller module 1 through the analog quantity input module. The main controller module 1 is connected with the touch liquid crystal screen module through a VGA interface and an RS232 interface, and the touch liquid crystal screen module displays the working state of a system and provides a control function for the device. The main controller module 1 is in real-time communication with the super capacitor CMS module 7, the DC/DC power conversion module 3, the DC/AC power conversion module 4, the remote monitoring device and other devices through the bus communication module so as to cooperatively work. The PAC main controller module obtains a feedback signal of the circuit breaker 9 through the digital input module and controls the opening and closing of the circuit breaker 9 through the digital output module.
Fig. 3 is a block diagram of a super capacitor CMS module, which is composed of a parallel connection balancing unit, an AD sampling processing circuit, a balancing control processor, a temperature signal processing circuit, an optical coupling isolation communication module, and an isolation power supply. The AD sampling processing circuit performs differential sampling on the parallel connection voltage, converts the voltage difference between two ends of the parallel connection node into absolute voltage to the ground, sends the absolute voltage to an AD sampling chip after passing through a proportion link, a filtering link and an amplitude limiting protection link, and converts analog quantity into digital quantity for voltage dynamic balance control and related abnormity and fault detection. The main function of the super capacitor CMS module 7 is to make a charging judgment on the relevant parallel node and issue a charging command for the relevant parallel node. And the parallel joint balancing unit is started after receiving the command, and charges the corresponding parallel joint. When the voltage of the parallel joint rises to a preset value, the processor sends a charging stopping command, and the parallel joint balancing unit stops working.
The super capacitor CMS module 7 also has the function of monitoring the temperature of the energy storage unit. The temperature sensor outputs a voltage signal representing the temperature, and the voltage signal is sent to the balance control processor after the links of proportion adjustment, filtering and amplitude limiting protection of the temperature signal processing circuit. The processor converts the temperature analog signal into a digital signal, then monitors the temperature in real time according to the working state of the system, and sends a command of starting the fan when the temperature exceeds a preset value.
The super capacitor CMS module 7 and the main controller module 1 realize information exchange through an isolation CAN communication module, and the balance control processor transmits parallel joint voltage, energy storage unit state, temperature value and the like to the main controller. The main controller downloads information such as commands and total current. The capacity and the internal resistance of the parallel connection super capacitor are identified in the balance control processor, and the identification result is uploaded to the main controller.
The input power of the super capacitor CMS module 7 is external 24V dc, and is directly used as the input power of the parallel-joint balancing unit and the power supply of the fan. The isolation of internal power supply and external input power is realized through the isolation power supply, and voltage conversion is realized. The output of the isolation power supply is a path of 15V, a path of 3.3V and a path of 5V, and the 15V power supply is used for the AD processing circuit. And one path of 3.3V is used for a balance control processor, an isolation CAN communication module and a temperature signal processing circuit. And one path of 5V is used for the AD processing circuit and the temperature signal processing circuit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. Main pump emergency power supply unit based on super capacitor energy storage, its characterized in that, emergency power supply unit includes: the system comprises a main controller module, an electric quantity detection module, a super capacitor energy storage module, a super capacitor CMS module, an isolating switch, a circuit breaker and a power conversion module;
the main controller module monitors a power grid supplying power to the main pump motor in real time through the electric quantity detection module, tracks the frequency, the phase and the amplitude of the voltage of the power grid through a phase-locking technology, and at the moment, the isolating switch and the circuit breaker are in a closed state;
the power conversion module consists of a DC/DC power conversion module, a DC/AC power conversion module and a DC bridge arm side support capacitor module, a plurality of half-bridge type DC/DC power conversion modules are connected in parallel for operation, and a uniform phase shifting mode is adopted when PWM control of a switching device is carried out between each half bridge;
when the main controller module monitors a grid power failure, the electric energy in the super capacitor energy storage module is converted into alternating current electric energy required by the main pump motor through the DC/DC power conversion module and the DC/AC power conversion module, the main pump motor is powered, and uninterrupted power supply is realized.
2. The supercapacitor energy storage based main pump emergency power supply device according to claim 1, wherein the main controller module adopts a PAC or a PLC as a core unit to realize the control of the whole device.
3. The supercapacitor energy storage based main pump emergency power supply device according to claim 1, wherein the supercapacitor is used as an energy storage element to form a supercapacitor energy storage module, and the supercapacitor CMS module is configured to control the voltage and SOC of the supercapacitor energy storage module.
4. The supercapacitor energy storage based main pump emergency power supply device according to claim 1, wherein the filter inductors of the DC/DC power converter and the DC/AC power converter are of a ring-type core structure, and are wound with copper wires.
5. The supercapacitor energy storage based main pump emergency power supply device according to claim 1, wherein sensors in each electric quantity detection module in the power conversion module perform detection of the sensors by a measured value comparison method, and the sensors with large differences are found and give an alarm.
6. The supercapacitor energy storage based main pump emergency power supply device according to claim 1, wherein the main pump motor emergency power supply device adopts a system structure for energy storage by a supercapacitor, and the main pump motor emergency power supply device adopting the structure is in seamless connection with a power supply voltage of a power grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110680530.5A CN113315215A (en) | 2021-06-18 | 2021-06-18 | Main pump emergency power supply device based on super capacitor energy storage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110680530.5A CN113315215A (en) | 2021-06-18 | 2021-06-18 | Main pump emergency power supply device based on super capacitor energy storage |
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| CN113315215A true CN113315215A (en) | 2021-08-27 |
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| CN202110680530.5A Pending CN113315215A (en) | 2021-06-18 | 2021-06-18 | Main pump emergency power supply device based on super capacitor energy storage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116088487A (en) * | 2023-04-11 | 2023-05-09 | 湖南长长电泵科技有限公司 | Emergency monitoring device for water pump controller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647342A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Novel uninterrupted power supply method and uninterrupted power source system |
| CN203734372U (en) * | 2013-12-23 | 2014-07-23 | 武汉众宇动力系统科技有限公司 | Fuel cell standby power supply system |
| CN105610358A (en) * | 2014-10-31 | 2016-05-25 | Ge延巴赫两合无限公司 | Power plant |
| CN107834696A (en) * | 2017-11-10 | 2018-03-23 | 中广核研究院有限公司 | A kind of reactor coolant pump electric supply installation and its application process |
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2021
- 2021-06-18 CN CN202110680530.5A patent/CN113315215A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647342A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Novel uninterrupted power supply method and uninterrupted power source system |
| CN203734372U (en) * | 2013-12-23 | 2014-07-23 | 武汉众宇动力系统科技有限公司 | Fuel cell standby power supply system |
| CN105610358A (en) * | 2014-10-31 | 2016-05-25 | Ge延巴赫两合无限公司 | Power plant |
| CN107834696A (en) * | 2017-11-10 | 2018-03-23 | 中广核研究院有限公司 | A kind of reactor coolant pump electric supply installation and its application process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116088487A (en) * | 2023-04-11 | 2023-05-09 | 湖南长长电泵科技有限公司 | Emergency monitoring device for water pump controller |
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Application publication date: 20210827 |