CN103151799B - A kind of micro-capacitance sensor electric power system and control method - Google Patents
A kind of micro-capacitance sensor electric power system and control method Download PDFInfo
- Publication number
- CN103151799B CN103151799B CN201310109139.5A CN201310109139A CN103151799B CN 103151799 B CN103151799 B CN 103151799B CN 201310109139 A CN201310109139 A CN 201310109139A CN 103151799 B CN103151799 B CN 103151799B
- Authority
- CN
- China
- Prior art keywords
- circuit
- generator
- battery pack
- battery
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of micro-capacitance sensor electric power system and control method, described system comprises generator, rectification circuit, DC/DC circuit, charging circuit, battery cohort working mode control circuit, battery cohort, inverter circuit, distribution bus and controller, also comprises monitoring and protection and metering circuit I, monitoring and protection and metering circuit II, power factor compensation circuit and battery pack monitoring and protecting circuit; The present invention both can be operated in and net state, also can realize, from net power supply, effectively can realizing reliable continued power in conjunction with solar generator, stand-by generator and battery cohort.
Description
Technical field
The present invention relates to a kind of micro-capacitance sensor electric power system and control method.
Background technology
At present, energy-saving and emission-reduction have become the focus of social concerns, wherein solar energy and wind energy are owing to having resource abundance, clean, widely distributed feature, make its application more and more extensive, there are the following problems to utilize the electric power system of solar energy and wind energy in prior art: 1, do not contain and have the AC power that solar light-heat power-generation system, wind generator system, diesel power generation system and combustion gas Stirling electricity generation system etc. send and solve from net, grid-connected supply problem; 2, when employing solar energy Stirling engine or the generating of combustion type Stirling engine, when the energy inputting Stirling engine increases, if the energy of increase can not be transformed into power delivery smoothly to electrical network, then the rotating speed of Stirling engine can rise fast, causes systems generate electricity frequency unstable; 3, power supply that alternating current power-generating system sends all being become DC power supply through rectifying device is stored in storage battery, causes electric power system very large to the capacity requirement of storage battery, improves system cost; 4, the frequency of alternating current power-generating system power supply needs to control; 5, adopt the conversion of AC-DC-interchange, reduce system effectiveness; 6, the process of existing control of power supply system accumulator cell charging and discharging is complicated.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop one and both can be operated in and net state, also can realize, from net power supply, effectively can realizing micro-capacitance sensor electric power system and the control method of reliable continued power in conjunction with solar generator, stand-by generator and battery cohort.
Technological means of the present invention is as follows:
A kind of micro-capacitance sensor electric power system, comprising:
Generator;
Generator is connected, for being transformed to galvanic rectification circuit to generator output AC electricity by distribution bus;
Connect rectification circuit, for exporting to rectification circuit the DC/DC circuit that direct current carries out voltage transformation;
Connect DC/DC circuit and connect battery cohort by battery cohort working mode control circuit, for the charging circuit utilizing DC/DC circuit output direct current to charge to the battery pack being operated in charge mode;
Connection control device and battery cohort, for the battery cohort working mode control circuit of the state of charge setting battery pack mode of operation according to battery pack; Described battery pack mode of operation comprises charge mode, powering mode and standby mode;
The battery cohort with at least three battery pack be connected with battery cohort working mode control circuit;
Connect battery cohort by battery cohort working mode control circuit, the mode of operation for set battery cohort working mode control circuit is that to carry out inversion be the inverter circuit transferring to distribution bus after the alternating current of fixed frequency to the direct current of the battery pack output of powering mode;
Distribution bus; Described distribution bus connects electric power users and grid interface respectively, for provide under net state power load to electric power users and and net state under utilize grid interface to be switched on or switched off electrical network;
Connect rectification circuit respectively, DC/DC circuit, charging circuit, battery cohort working mode control circuit and inverter circuit, according to the charge mode setting signal control rectification circuit that battery cohort working mode control circuit sends over, rectification is carried out to the alternating current that distribution bus transmits, control DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, the direct voltage that control charging circuit utilizes DC/DC circuit to export charges to the battery pack being operated in charge mode, the powering mode setting signal sended over according to battery cohort working mode control circuit controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfers to the controller of distribution bus,
In addition, also comprise:
Connect generator, for monitoring generator operation state and protecting according to the generator abnormal operation monitored, and metering generator exports monitoring and protection and the metering circuit I of electricity; Connect electric power users or grid interface, for monitoring electrical network or power load is run and protects according to the electrical network monitored or power load abnormal operating condition, and the monitoring and protection of metering electrical network power consumption or power load change and metering circuit II;
Connect generator and controller, for the control signal according to controller, reactive power compensation is carried out to generator, generator power factor is adjusted to the power factor compensation circuit of set point;
Connect battery cohort and controller, state of charge observation circuit and anti-overcharge, the anti-mistake with each battery pack put, anti-overvoltage, anti-under-voltage, anti-overheated, antioverloading, anti-reverse safety protective circuit the state of charge of each battery pack monitored is fed back to the battery pack monitoring and protecting circuit of controller;
Further, described generator comprises the solar generator and stand-by generator that are connected with controller respectively; Described stand-by generator is wind-driven generator, combustion type stirling generator and diesel engine generator at least one, the solar generator that the alternating current that controller transmits according to current line of radiation intensity Selection utilization distribution bus starts or stand-by generator generate electricity, and the fixed frequency according to inverter output AC electricity controls generator frequency; Described solar generator is solar energy Stirling generator or Bretton generator;
Further, described controller also connects monitoring and protection and metering circuit I respectively, power factor compensation circuit, monitoring and protection and metering circuit II and battery pack monitoring and protecting circuit, for judging whether generator power output that monitoring and protection and metering circuit I transmit is greater than the power consumption of electrical network that monitoring and protection and metering circuit II transmit or electric power users, and the battery pack setting an electricity deficiency by battery cohort working mode control circuit when being greater than power consumption from energy output under net state is operated in charge mode and controls rectification circuit and carries out rectification to the alternating current that distribution bus transmits, control DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, the direct voltage that control charging circuit utilizes DC/DC circuit to export charges to the battery pack being operated in charge mode, set by battery cohort working mode control circuit battery pack that an electricity is full of when being less than power consumption from energy output under net state to be operated in powering mode and to control inverter circuit and be the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfer to distribution bus, and control power factor compensation circuit carries out reactive power compensation to generator, generator power factor is adjusted to set point,
Further, and the battery capacity of battery pack under net state, can be reduced.
A control method for micro-capacitance sensor electric power system, comprises the steps:
S1: the state of charge of each battery pack of battery pack monitoring and protecting circuit Real-Time Monitoring battery cohort changes and is transferred to controller, controller sets by battery cohort working mode control circuit the battery pack that an electricity is full of and is operated in powering mode, powering mode setting signal is sent to controller by battery cohort working mode control circuit simultaneously, performs S2;
S2: controller controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and is transferred to generator by distribution bus, and described generator comprises solar generator and stand-by generator; Described stand-by generator is wind-driven generator, combustion type stirling generator and diesel engine generator at least one; Perform S3;
S3: the generator AC power utilizing distribution bus to transmit started selected by controller according to current direct solar radiation intensity, when direct solar radiation intensity reaches set point, selection solar generator generates electricity, when direct solar radiation intensity does not reach set point, selection stand-by generator generates electricity, and performs S4;
S4: the electrical power generators after startup is sent alternating current by distribution bus and utilizes grid interface to be transferred to electrical network or provide power load to electric power users, the energy output of monitoring and protection and metering circuit I real time measure generator is also transferred to controller, the power consumption of monitoring and protection and metering circuit II real time measure electrical network or electric power users is also transferred to controller, performs S5;
S5: controller judges when whether being greater than power consumption from energy output under net state, is perform S6, otherwise performs S7;
S6: the battery pack that controller sets an electricity deficiency by battery cohort working mode control circuit is operated in charge mode, simultaneously charge mode setting signal is sent to controller by battery cohort working mode control circuit, and controller controls that rectification circuit carries out rectification to the alternating current that distribution bus transmits, controls DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, control charging circuit utilizes DC/DC circuit to export direct voltage charges to the battery pack being operated in charge mode;
S7: controller sets by battery cohort working mode control circuit the battery pack that an electricity is full of and is operated in powering mode, simultaneously powering mode setting signal is sent to controller by battery pack working mode control circuit, and controller controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfers to distribution bus and supplement power consumption and be transferred to stand-by generator by distribution bus;
In addition, also have S8, controller controls power factor compensation circuit and carries out reactive power compensation to generator, and generator power factor is adjusted to set point;
In addition, also have S9, controller regulates by the output current of control DC/DC circuit the charging current being operated in the battery pack of charge mode;
In addition, also there is S10, battery pack monitoring and protecting circuit is according to the state of charge change of each battery pack of monitoring, and when occurring that any battery group overcharges, cross put, overvoltage, under-voltage, overheated, overload and reversal connection time, start that anti-overcharge, anti-mistake is put, anti-overvoltage, anti-under-voltage, anti-overheated, antioverloading and anti-reverse safety protective circuit;
In addition, also there is S11, under net state and described generator be solar energy Stirling generator or combustion type stirling generator time, battery cohort working mode control circuit sets battery pack that an electricity is full of and is operated in powering mode and keeps any instant battery cohort continuous transmission direct current to exporting the inverter circuit of fixed frequency to distribution bus.
Owing to have employed technique scheme, a kind of micro-capacitance sensor electric power system provided by the invention and control method, both can pass through by generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, monitoring and protection and metering circuit II and grid interface form and supply path under net state make this system works and net state, also can utilize by generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, monitoring and protection and metering circuit II and power load the supply path formed under net state realize this system from net power supply, avoid the problem that existing electric power system must adopt the conversion of AC-DC-interchange to cause system effectiveness to reduce, generator comprises solar generator and stand-by generator simultaneously, wherein stand-by generator is wind-driven generator, combustion type stirling generator and diesel engine generator at least one, efficiently utilize solar energy and wind energy, again can at solar generator, when wind-driven generator can not generate electricity, combustion type stirling generator or diesel engine generator is adopted to be the reliable continued power of micro-grid system, ensure that this system may be used for having electrical network covering area to make full use of solar energy, wind energy resources, also may be used for not having chlamydate outlying district at electrical network, away from the region such as island in continent, by solar energy resources, wind energy becomes electric energy, make full use of the natural resources and promote the well-being of mankind, additionally by by generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, rectification circuit, DC/DC circuit, charging circuit, battery cohort working mode control circuit and battery cohort form battery cohort charge path and realize the charging of battery cohort, utilize by battery cohort, battery cohort working mode control circuit, inverter circuit, the battery cohort supply path that distribution bus is formed makes full use of battery cohort, for distribution bus provides the alternating current of stabilized frequency, ensure that the stable operation of this system, the present invention is changed by the state of charge of each battery pack of battery pack monitoring and protecting circuit Real-Time Monitoring battery cohort and is transferred to controller, controller is by the mode of operation of battery cohort working mode control circuit setting battery cohort, the interlock circuit action on supply path or charge path is controlled with Time Controller, and battery pack monitoring and protecting circuit has anti-overcharge, anti-mistake is put, anti-overvoltage, anti-under-voltage, anti-overcharge, anti-mistake is put, anti-overheated, the battery pack monitoring and protecting circuit of antioverloading and anti-reverse etc. safety protective circuit, safe and reliable, process is simple, and regulate the charging current being operated in the battery pack of charge mode to avoid overcharging or charge less when being greater than the output current of power consumption Time Controller by control DC/DC circuit from energy output under net state, solve the problem of the process complexity of existing control of power supply system accumulator cell charging and discharging, in addition, power factor compensation circuit carries out reactive power compensation to generator, generator power factor is adjusted to set point, utilize battery cohort to power the AC power of the fixed frequency provided through inverter circuit simultaneously, the rotating speed of Stirling engine can be stablized, like this, when in this system solar generator adopt solar energy Stirling generator and combustion type stirling generator for subsequent use time, the drawback that Stirling engine rotary speed unstabilization is fixed can be overcome, simultaneously, the supply path of this system is unobstructed, ensure that the electric energy that generator sends can be smoothly through system introductory path arrival user or electrical network, also the effect maintaining system stable operation can be played, and controller controls generator frequency according to the fixed frequency of inverter output AC electricity, the frequency solving existing alternating current power-generating system power supply needs the problem controlled, the present invention can contain solar power system, wind generator system, combustion type Stirling electricity generation system and diesel power generation system, solve from net and grid-connected AC power supply problem, the energy output of generator utilizes grid interface to be directly incorporated into electrical network by distribution bus or directly provides power load to electric power users, if energy output is greater than power consumption under net state, then dump energy is supplied to the charging of battery cohort, avoid existing alternating current power-generating system sent power supply is all become DC power supply through rectifying device to be stored in storage battery, cause electric power system very large to the capacity requirement of storage battery, improve the problem of system cost, feature richness of the present invention, easy to use, be applicable to micro-grid system and extensively promote.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of system of the present invention;
Fig. 2 is the flow chart of control method of the present invention.
Embodiment
A kind of micro-capacitance sensor electric power system as shown in Figure 1, comprising: generator, generator is connected, for being transformed to galvanic rectification circuit to generator output AC electricity by distribution bus, connect rectification circuit, for exporting to rectification circuit the DC/DC circuit that direct current carries out voltage transformation, connect DC/DC circuit and connect battery cohort by battery cohort working mode control circuit, for the charging circuit utilizing DC/DC circuit output direct current to charge to the battery pack being operated in charge mode, connection control device and battery cohort, for the battery cohort working mode control circuit of the state of charge setting battery pack mode of operation according to battery pack, described battery pack mode of operation comprises charge mode, powering mode and standby mode, the battery cohort with at least three battery pack be connected with battery cohort working mode control circuit, connect battery cohort by battery cohort working mode control circuit, the mode of operation for set battery cohort working mode control circuit is that to carry out inversion be the inverter circuit transferring to distribution bus after the alternating current of fixed frequency to the direct current of the battery pack output of powering mode, distribution bus, described distribution bus connects electric power users and grid interface respectively, for provide under net state power load to electric power users and and net state under utilize grid interface to be switched on or switched off electrical network, connect rectification circuit respectively, DC/DC circuit, charging circuit, battery cohort working mode control circuit and inverter circuit, according to the charge mode setting signal control rectification circuit that battery cohort working mode control circuit sends over, rectification is carried out to the alternating current that distribution bus transmits, control DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, the direct voltage that control charging circuit utilizes DC/DC circuit to export charges to the battery pack being operated in charge mode, the powering mode setting signal sended over according to battery cohort working mode control circuit controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfers to the controller of distribution bus, in addition, also comprise: connect generator, for monitoring generator operation state and protecting according to the generator abnormal operation monitored, and metering generator exports monitoring and protection and the metering circuit I of electricity, connect electric power users or grid interface, for monitoring electrical network or power load is run and protects according to the electrical network monitored or power load abnormal operating condition, and the monitoring and protection of metering electrical network power consumption or power load change and metering circuit II, connect generator and controller, for the control signal according to controller, reactive power compensation is carried out to generator, generator power factor is adjusted to the power factor compensation circuit of set point, connect battery cohort and controller, state of charge observation circuit and anti-overcharge, the anti-mistake with each battery pack put, anti-overvoltage, anti-under-voltage, anti-overheated, antioverloading, anti-reverse safety protective circuit the state of charge of each battery pack monitored is fed back to the battery pack monitoring and protecting circuit of controller, further, described generator comprises the solar generator and stand-by generator that are connected with controller respectively, described stand-by generator is wind-driven generator, combustion type stirling generator and diesel engine generator at least one, the solar generator that the alternating current that controller transmits according to current line of radiation intensity Selection utilization distribution bus starts or stand-by generator generate electricity, and the fixed frequency according to inverter output AC electricity controls generator frequency, described solar generator is solar energy Stirling generator or Bretton generator, further, described controller also connects monitoring and protection and metering circuit I respectively, power factor compensation circuit, monitoring and protection and metering circuit II and battery pack monitoring and protecting circuit, for judging whether generator power output that monitoring and protection and metering circuit I transmit is greater than the power consumption of electrical network that monitoring and protection and metering circuit II transmit or electric power users, and the battery pack setting an electricity deficiency by battery cohort working mode control circuit when being greater than power consumption from energy output under net state is operated in charge mode and controls rectification circuit and carries out rectification to the alternating current that distribution bus transmits, control DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, the direct voltage that control charging circuit utilizes DC/DC circuit to export charges to the battery pack being operated in charge mode, set by battery cohort working mode control circuit battery pack that an electricity is full of when being less than power consumption from energy output under net state to be operated in powering mode and to control inverter circuit and be the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfer to distribution bus, and control power factor compensation circuit carries out reactive power compensation to generator, generator power factor is adjusted to set point, further, and the battery capacity of battery pack under net state, can be reduced.Described battery pack is batteries.
The control method of a kind of micro-capacitance sensor electric power system as shown in Figure 2, comprises the steps:
S1: the state of charge of each battery pack of battery pack monitoring and protecting circuit Real-Time Monitoring battery cohort changes and is transferred to controller, controller sets by battery cohort working mode control circuit the battery pack that an electricity is full of and is operated in powering mode, powering mode setting signal is sent to controller by battery cohort working mode control circuit simultaneously, performs S2;
S2: controller controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and is transferred to generator by distribution bus, and described generator comprises solar generator and stand-by generator; Described stand-by generator is wind-driven generator, combustion type stirling generator and diesel engine generator at least one; Perform S3;
S3: the generator AC power utilizing distribution bus to transmit started selected by controller according to current direct solar radiation intensity, when direct solar radiation intensity reaches set point, selection solar generator generates electricity, when direct solar radiation intensity does not reach set point, selection stand-by generator generates electricity, and performs S4;
S4: the electrical power generators after startup is sent alternating current by distribution bus and utilizes grid interface to be transferred to electrical network or provide power load to electric power users, the energy output of monitoring and protection and metering circuit I real time measure generator is also transferred to controller, the power consumption of monitoring and protection and metering circuit II real time measure electrical network or electric power users is also transferred to controller, performs S5;
S5: controller judges when whether being greater than power consumption from energy output under net state, is perform S6, otherwise performs S7;
S6: the battery pack that controller sets an electricity deficiency by battery cohort working mode control circuit is operated in charge mode, simultaneously charge mode setting signal is sent to controller by battery cohort working mode control circuit, and controller controls that rectification circuit carries out rectification to the alternating current that distribution bus transmits, controls DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, control charging circuit utilizes DC/DC circuit to export direct voltage charges to the battery pack being operated in charge mode;
S7: controller sets by battery cohort working mode control circuit the battery pack that an electricity is full of and is operated in powering mode, simultaneously powering mode setting signal is sent to controller by battery pack working mode control circuit, and controller controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfers to distribution bus and supplement power consumption and be transferred to stand-by generator by distribution bus;
In addition, also have S8, controller controls power factor compensation circuit and carries out reactive power compensation to generator, and generator power factor is adjusted to set point; Also have S9, controller regulates by the output current of control DC/DC circuit the charging current being operated in the battery pack of charge mode; Also there is S10, battery pack monitoring and protecting circuit is according to the state of charge change of each battery pack of monitoring, and when occurring that any battery group overcharges, cross put, overvoltage, under-voltage, overheated, overload and reversal connection time, start that anti-overcharge, anti-mistake is put, anti-overvoltage, anti-under-voltage, anti-overheated, antioverloading and anti-reverse safety protective circuit; Also there is S11, under net state and described generator be solar energy Stirling generator or combustion type stirling generator time, battery cohort working mode control circuit sets battery pack that an electricity is full of and is operated in powering mode and keeps any instant battery cohort continuous transmission direct current to exporting the inverter circuit of fixed frequency to distribution bus.
The present invention by generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, monitoring and protection and metering circuit II and grid interface form and net state under supply path, generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, monitoring and protection and metering circuit II and power load form the supply path under net state, generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, rectification circuit, DC/DC circuit, charging circuit, battery cohort working mode control circuit and battery cohort form battery cohort charge path, battery cohort, battery cohort working mode control circuit, inverter circuit, distribution bus form battery cohort supply path, before this micro-grid system work, have at least a Battery pack group electricity to be full state, have a Battery pack group to be in the discharge condition of the appropriate degree of depth, each battery pack has three kinds of mode of operations, is respectively charge mode, powering mode and standby mode, when direct solar radiation intensity (DNI) index meets the set point of power generation requirements, as setting DNI is greater than 200W/m
2time, selection solar generator generates electricity, if solar generator sends electricity and is not enough to meet power demands, then be operated in the temporary transient supplementary power of storage battery of powering mode, if simultaneously stand-by generator select wind-driven generator and wind-force reaches the set point meeting power generation requirements time, start wind turbine power generation, or start other stand-by generators as combustion type stirling generator or diesel engine generator generating, when direct solar radiation intensity (DNI) index does not meet the set point of power generation requirements, as setting DNI is less than 200W/m
2time, directly start stand-by generator as wind-driven generator, combustion type stirling generator or diesel engine generator generating, ensure that can motor-driven selection generator, and actual stand-by generator when using in system can in conjunction with geographical environment, weather conditions, demands etc. select wind-driven generator, combustion type stirling generator, diesel engine generator at least one, achieves with solar generator, wind-driven generators etc. utilize the generating equipment of clean energy resource for master, combustion type stirling generator, diesel engine generator and the energy storage of battery cohort are as electric energy supplement supply equipment when solar generator and wind-driven generator cisco unity malfunction, ensure that generator can 24 hours normal power supplies, this system can according to circumstances configure, if for grid-connected work, battery capacity can be reduced, lonely net pattern can be switched to when electrical grid failure, a kind of micro-capacitance sensor electric power system provided by the invention and control method, both can pass through by generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, monitoring and protection and metering circuit II and grid interface form and supply path under net state make this system works and net state, also can utilize by generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, monitoring and protection and metering circuit II and power load the supply path formed under net state realize this system from net power supply, avoid the problem that existing electric power system must adopt the conversion of AC-DC-interchange to cause system effectiveness to reduce, generator comprises solar generator and stand-by generator simultaneously, wherein stand-by generator comprises wind-driven generator, combustion type stirling generator and diesel engine generator at least one, efficiently utilize solar energy and wind energy, again can at solar generator, when wind-driven generator can not generate electricity, combustion type stirling generator or diesel engine generator is adopted to be the reliable continued power of micro-grid system, ensure that this system may be used for having electrical network covering area to make full use of solar energy, wind energy resources, also may be used for not having chlamydate outlying district at electrical network, away from the region such as island in continent, by solar energy resources, wind energy becomes electric energy, make full use of the natural resources and promote the well-being of mankind, additionally by by generator, monitoring and protection and metering circuit I, power factor compensation circuit, distribution bus, rectification circuit, DC/DC circuit, charging circuit, battery cohort working mode control circuit and battery cohort form battery cohort charge path and realize the charging of battery cohort, utilize by battery cohort, battery cohort working mode control circuit, inverter circuit, the battery cohort supply path that distribution bus is formed makes full use of battery cohort, for distribution bus provides the alternating current of stabilized frequency, ensure that the stable operation of this system, the present invention is changed by the state of charge of each battery pack of battery pack monitoring and protecting circuit Real-Time Monitoring battery cohort and is transferred to controller, controller is by the mode of operation of battery cohort working mode control circuit setting battery cohort, the interlock circuit action on supply path or charge path is controlled with Time Controller, and battery pack monitoring and protecting circuit has anti-overcharge, anti-mistake is put, anti-overvoltage, anti-under-voltage, anti-overcharge, anti-mistake is put, anti-overheated, the battery pack monitoring and protecting circuit of antioverloading and anti-reverse etc. safety protective circuit, safe and reliable, process is simple, and regulate the charging current being operated in the battery pack of charge mode to avoid overcharging or charge less when being greater than the output current of power consumption Time Controller by control DC/DC circuit from energy output under net state, charging process is once start simultaneously, in a charge cycle of battery pack, do not allow midway to stop charging, the batteries of charge mode, many groups can be configured according to system requirements, can ensure that every group storage battery all can be full of and not overcharge, solve the problem of the process complexity of existing control of power supply system accumulator cell charging and discharging, in addition, power factor compensation circuit carries out reactive power compensation to generator, generator power factor is adjusted to set point, the usual value of set point of power factor is from perception 0.7 to capacitive 0.7, utilize battery cohort to power the AC power of the fixed frequency provided through inverter circuit simultaneously, the rotating speed of Stirling engine can be stablized, like this, when in this system solar generator adopt solar energy Stirling generator and combustion type stirling generator for subsequent use time, the drawback that Stirling engine rotary speed unstabilization is fixed can be overcome, simultaneously, the supply path of this system is unobstructed, ensure that the electric energy that generator sends can be smoothly through system introductory path arrival user or electrical network, also the effect maintaining system stable operation can be played, and controller controls generator frequency according to the fixed frequency of inverter output AC electricity, the frequency solving existing alternating current power-generating system power supply needs the problem controlled, the present invention can contain solar power system, wind generator system, combustion type Stirling electricity generation system and diesel power generation system, solve from net and grid-connected AC power supply problem, the energy output of generator utilizes grid interface to be directly incorporated into electrical network by distribution bus or directly provides power load to electric power users, if energy output is greater than power consumption under net state, then dump energy is supplied to the charging of battery cohort, avoid existing alternating current power-generating system sent power supply is all become DC power supply through rectifying device to be stored in storage battery, cause electric power system very large to the capacity requirement of storage battery, improve the problem of system cost, feature richness of the present invention, easy to use, be applicable to micro-grid system and extensively promote.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (9)
1. a micro-capacitance sensor electric power system, is characterized in that comprising:
Generator;
Generator is connected, for being transformed to galvanic rectification circuit to generator output AC electricity by distribution bus;
Connect rectification circuit, for exporting to rectification circuit the DC/DC circuit that direct current carries out voltage transformation;
Connect DC/DC circuit and connect battery cohort by battery cohort working mode control circuit, for the charging circuit utilizing DC/DC circuit output direct current to charge to the battery pack being operated in charge mode;
Connection control device and battery cohort, for the battery cohort working mode control circuit of the state of charge setting battery pack mode of operation according to battery pack; Described battery pack mode of operation comprises charge mode, powering mode and standby mode;
The battery cohort with at least three battery pack be connected with battery cohort working mode control circuit;
Connect battery cohort by battery cohort working mode control circuit, the mode of operation for set battery cohort working mode control circuit is that to carry out inversion be the inverter circuit transferring to distribution bus after the alternating current of fixed frequency to the direct current of the battery pack output of powering mode;
Distribution bus; Described distribution bus connects electric power users and grid interface respectively, for provide under net state power load to electric power users and and net state under utilize grid interface to be switched on or switched off electrical network;
Connect rectification circuit respectively, DC/DC circuit, charging circuit, battery cohort working mode control circuit and inverter circuit, according to the charge mode setting signal control rectification circuit that battery cohort working mode control circuit sends over, rectification is carried out to the alternating current that distribution bus transmits, control DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, the direct voltage that control charging circuit utilizes DC/DC circuit to export charges to the battery pack being operated in charge mode, the powering mode setting signal sended over according to battery cohort working mode control circuit controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfers to the controller of distribution bus,
Described generator comprises the solar generator and stand-by generator that are connected with controller respectively; Described stand-by generator is wind-driven generator, combustion type stirling generator and diesel engine generator at least one, the solar generator that the alternating current that controller transmits according to current line of radiation intensity Selection utilization distribution bus starts or stand-by generator generate electricity, and the fixed frequency according to inverter output AC electricity controls generator frequency; Described solar generator is solar energy Stirling generator or Bretton generator.
2. a kind of micro-capacitance sensor electric power system according to claim 1, characterized by further comprising:
Connect generator, for monitoring generator operation state and protecting according to the generator abnormal operation monitored, and metering generator exports monitoring and protection and the metering circuit I of electricity; Connect electric power users or grid interface, for monitoring electrical network or power load is run and protects according to the electrical network monitored or power load abnormal operating condition, and the monitoring and protection of metering electrical network power consumption or power load change and metering circuit II;
Connect generator and controller, for the control signal according to controller, reactive power compensation is carried out to generator, generator power factor is adjusted to the power factor compensation circuit of set point;
Connect battery cohort and controller, state of charge observation circuit and anti-overcharge, the anti-mistake with each battery pack put, anti-overvoltage, anti-under-voltage, anti-overheated, antioverloading, anti-reverse safety protective circuit the state of charge of each battery pack monitored is fed back to the battery pack monitoring and protecting circuit of controller.
3. a kind of micro-capacitance sensor electric power system according to claim 2, it is characterized in that described controller also connects monitoring and protection and metering circuit I respectively, power factor compensation circuit, monitoring and protection and metering circuit II and battery pack monitoring and protecting circuit, for judging whether generator power output that monitoring and protection and metering circuit I transmit is greater than the power consumption of electrical network that monitoring and protection and metering circuit II transmit or electric power users, and the battery pack setting an electricity deficiency by battery cohort working mode control circuit when being greater than power consumption from energy output under net state is operated in charge mode and controls rectification circuit and carries out rectification to the alternating current that distribution bus transmits, control DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, the direct voltage that control charging circuit utilizes DC/DC circuit to export charges to the battery pack being operated in charge mode, set by battery cohort working mode control circuit battery pack that an electricity is full of when being less than power consumption from energy output under net state to be operated in powering mode and to control inverter circuit and be the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfer to distribution bus, and control power factor compensation circuit carries out reactive power compensation to generator, generator power factor is adjusted to set point.
4. a kind of micro-capacitance sensor electric power system according to claim 1, is characterized in that and reduce the battery capacity of battery pack under net state.
5. a control method for micro-capacitance sensor electric power system, is characterized in that comprising the steps:
S1: the state of charge of each battery pack of battery pack monitoring and protecting circuit Real-Time Monitoring battery cohort changes and is transferred to controller, controller sets by battery cohort working mode control circuit the battery pack that an electricity is full of and is operated in powering mode, powering mode setting signal is sent to controller by battery cohort working mode control circuit simultaneously, performs S2;
S2: controller controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and is transferred to generator by distribution bus, and described generator comprises solar generator and stand-by generator; Described stand-by generator is wind-driven generator, combustion type stirling generator and diesel engine generator at least one; Perform S3;
S3: the generator AC power utilizing distribution bus to transmit started selected by controller according to current direct solar radiation intensity, when direct solar radiation intensity reaches set point, selection solar generator generates electricity, when direct solar radiation intensity does not reach set point, selection stand-by generator generates electricity, and performs S4;
S4: the electrical power generators after startup is sent alternating current by distribution bus and utilizes grid interface to be transferred to electrical network or provide power load to electric power users, the energy output of monitoring and protection and metering circuit I real time measure generator is also transferred to controller, the power consumption of monitoring and protection and metering circuit II real time measure electrical network or electric power users is also transferred to controller, performs S5;
S5: controller judges when whether being greater than power consumption from energy output under net state, is perform S6, otherwise performs S7;
S6: the battery pack that controller sets an electricity deficiency by battery cohort working mode control circuit is operated in charge mode, simultaneously charge mode setting signal is sent to controller by battery cohort working mode control circuit, and controller controls that rectification circuit carries out rectification to the alternating current that distribution bus transmits, controls DC/DC circuit carries out voltage transformation to the direct current that rectification circuit exports, control charging circuit utilizes DC/DC circuit to export direct voltage charges to the battery pack being operated in charge mode;
S7: controller sets by battery cohort working mode control circuit the battery pack that an electricity is full of and is operated in powering mode, simultaneously powering mode setting signal is sent to controller by battery pack working mode control circuit, and controller controls inverter circuit and is the alternating current of fixed frequency to the DC inverter that the battery pack being operated in powering mode exports and transfers to distribution bus and supplement power consumption and be transferred to stand-by generator by distribution bus.
6. the control method of a kind of micro-capacitance sensor electric power system according to claim 5, is characterized in that also having S8, and controller controls power factor compensation circuit and carries out reactive power compensation to generator, and generator power factor is adjusted to set point.
7. the control method of a kind of micro-capacitance sensor electric power system according to claim 5, is characterized in that also having S9, and controller regulates by the output current of control DC/DC circuit the charging current being operated in the battery pack of charge mode.
8. the control method of a kind of micro-capacitance sensor electric power system according to claim 5; it is characterized in that also there is S10; battery pack monitoring and protecting circuit is according to the state of charge change of each battery pack of monitoring; and when occurring that any battery group overcharges, cross put, overvoltage, under-voltage, overheated, overload and reversal connection time, start that anti-overcharge, anti-mistake is put, anti-overvoltage, anti-under-voltage, anti-overheated, antioverloading and anti-reverse safety protective circuit.
9. the control method of a kind of micro-capacitance sensor electric power system according to claim 5, it is characterized in that also there is S11, under net state and described generator be solar energy Stirling generator or combustion type stirling generator time, battery cohort working mode control circuit sets battery pack that an electricity is full of and is operated in powering mode and keeps any instant battery cohort continuous transmission direct current to exporting the inverter circuit of fixed frequency to distribution bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109139.5A CN103151799B (en) | 2013-03-30 | 2013-03-30 | A kind of micro-capacitance sensor electric power system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109139.5A CN103151799B (en) | 2013-03-30 | 2013-03-30 | A kind of micro-capacitance sensor electric power system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103151799A CN103151799A (en) | 2013-06-12 |
| CN103151799B true CN103151799B (en) | 2015-08-12 |
Family
ID=48549730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310109139.5A Expired - Fee Related CN103151799B (en) | 2013-03-30 | 2013-03-30 | A kind of micro-capacitance sensor electric power system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103151799B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560544B (en) | 2013-11-22 | 2015-05-27 | 国家电网公司 | System for starting large-scale power load in micro grid |
| CN104993478B (en) * | 2015-06-30 | 2017-06-23 | 华南理工大学 | A kind of off-grid operation control method suitable for user side micro-capacitance sensor |
| CN105429162A (en) * | 2015-12-28 | 2016-03-23 | 上海电力学院 | Wind power stabilizing method for three-battery topological structure-based battery energy storage systems |
| CN108616150A (en) * | 2018-03-30 | 2018-10-02 | 珠海银隆电器有限公司 | A kind of photovoltaic energy storage system intelligent power supply, storing up electricity method |
| CN110671271A (en) * | 2018-07-02 | 2020-01-10 | 赫普科技发展（北京）有限公司 | Complementary coupling power generation system and method |
| CN110676868A (en) * | 2018-07-02 | 2020-01-10 | 赫普科技发展（北京）有限公司 | Wind, light and gas complementary coupling power generation system and method |
| CN110957720B (en) * | 2019-11-15 | 2021-10-29 | 国网浙江省电力有限公司嘉兴供电公司 | Power supply system and method for stable power supply |
| CN115940295B (en) * | 2023-02-21 | 2023-06-13 | 国网山东省电力公司乳山市供电公司 | Electric energy monitoring control system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201623500U (en) * | 2010-01-22 | 2010-11-03 | 广东天富风光潮发电设备有限公司 | Small shunt-connected wind power generation system with storage battery |
| CN102237691A (en) * | 2011-07-06 | 2011-11-09 | 东北大学 | Wind energy and solar energy grid-connected generation system and control method thereof |
| CN102527569A (en) * | 2012-01-11 | 2012-07-04 | 陕西科技大学 | Music fountain system based on wind-light complementation |
| CN203151117U (en) * | 2013-03-30 | 2013-08-21 | 大连宏海新能源发展有限公司 | Micro grid power supply system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0919066A (en) * | 1995-06-27 | 1997-01-17 | Japan Storage Battery Co Ltd | Dispersion type power supply |
-
2013
- 2013-03-30 CN CN201310109139.5A patent/CN103151799B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201623500U (en) * | 2010-01-22 | 2010-11-03 | 广东天富风光潮发电设备有限公司 | Small shunt-connected wind power generation system with storage battery |
| CN102237691A (en) * | 2011-07-06 | 2011-11-09 | 东北大学 | Wind energy and solar energy grid-connected generation system and control method thereof |
| CN102527569A (en) * | 2012-01-11 | 2012-07-04 | 陕西科技大学 | Music fountain system based on wind-light complementation |
| CN203151117U (en) * | 2013-03-30 | 2013-08-21 | 大连宏海新能源发展有限公司 | Micro grid power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103151799A (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103151799B (en) | A kind of micro-capacitance sensor electric power system and control method | |
| CN103595138B (en) | A kind of smart micro-grid system | |
| CN103647274B (en) | A kind of for can the energy control method of grid-connected and micro-grid system from network operation | |
| Ambia et al. | Centralized power control strategy for AC-DC hybrid micro-grid system using multi-converter scheme | |
| CN102510089B (en) | Wind-solar storage micro-grid system | |
| CN102882237B (en) | Intelligent energy storage machine and operating method thereof | |
| CN102412594B (en) | Control Method of Microgrid System | |
| CN204669070U (en) | Wind featuring complementation of solar energy and fuel energy intelligent power generation control system | |
| Jia et al. | Architecture design for new AC-DC hybrid micro-grid | |
| CN102324753B (en) | Energy storage control method of battery energy storage system | |
| CN203850910U (en) | Electrical vehicle power supply device based on direct-current microgrid | |
| WO2019075879A1 (en) | Running mode conversion method for alternating-current/direct-current hybrid microgrid | |
| CN108347067A (en) | A kind of microgrid framework and control method containing battery energy storage and generator | |
| CN110707747A (en) | Household photovoltaic micro-grid energy management system containing coal-to-electricity equipment | |
| CN102097975A (en) | Complementary solar power generation system | |
| CN102496961A (en) | Direct-current-bus-based wind-solar independent power grid system | |
| CN202405799U (en) | Independent wind-power grid system based on direct current bus | |
| CN203895992U (en) | Light, wind and oil mixing power generation system of isolated network | |
| CN103956961B (en) | A kind of control method of lonely net light wind oil hybrid power system | |
| CN207082890U (en) | A kind of more logical groups mould assembly photovoltaic energy storage management systems | |
| CN203151117U (en) | Micro grid power supply system | |
| CN211018290U (en) | Coupling energy supply system for gas triple supply and wind-solar storage complementary power generation | |
| CN110829492B (en) | Combined energy supply method based on grid-connected energy storage and island triple co-generation | |
| CN208158135U (en) | A kind of microgrid framework containing battery energy storage and generator | |
| CN220107589U (en) | Energy storage grid-connected power generation system based on asynchronous diesel generator set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 |