CN110896221A - Power management system - Google Patents
Power management system Download PDFInfo
- Publication number
- CN110896221A CN110896221A CN201911287465.9A CN201911287465A CN110896221A CN 110896221 A CN110896221 A CN 110896221A CN 201911287465 A CN201911287465 A CN 201911287465A CN 110896221 A CN110896221 A CN 110896221A
- Authority
- CN
- China
- Prior art keywords
- power
- module
- charging
- analysis
- energy storage
- 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.)
- Granted
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 64
- 238000012544 monitoring process Methods 0.000 claims abstract description 60
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 238000004458 analytical method Methods 0.000 claims description 71
- 238000010248 power generation Methods 0.000 claims description 51
- 230000005611 electricity Effects 0.000 claims description 23
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 6
- 238000007405 data analysis Methods 0.000 claims description 3
- 230000035772 mutation Effects 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000007619 statistical method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 4
- 238000003745 diagnosis Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
-
- 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
- Y04S10/126—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 electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
-
- 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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
-
- 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
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
-
- 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
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power management system, comprising: the system comprises a charging energy storage device, a regional power device and a monitoring and analyzing device. The invention has higher informatization degree and integration level, integrates the power management of vehicle charging and discharging and power exchanging modes and the power management and protection of a regional power network, and provides a more comprehensive monitoring and analyzing scheme.
Description
Technical Field
The invention relates to the field of power grids, in particular to a power management system.
Background
With the development of national economy of China, power resources are more and more widely applied to various industries, and in order to ensure that the power resources are more scientifically distributed and used, the power industry is continuously advanced with time, and the power management capability and the technical level are improved.
At present, most of power management systems are weak in integration capability and low in service and management informatization degree, and especially after a novel charging and discharging mode and a regional management mode appear, the existing power management systems cannot meet the functional requirements of new services.
Disclosure of Invention
In order to solve the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a power management system, comprising: the system comprises a charging energy storage device, a regional power device and a monitoring analysis device; wherein.
The charging energy storage device comprises a current transformation module, an energy storage charging and discharging module, a battery management module, a power generation access module, a comprehensive control module, a vehicle charging module, a vehicle battery replacement module and an electric energy monitoring module; wherein.
The converter module is used for controlling the bidirectional flow of electric energy of a power grid, a direct current bus and a microgrid alternating current bus, comprises a bidirectional converter and an inverter, and controls the flow direction of current through two control modes of external control and automatic control so as to realize grid-connected and off-grid operation; and adjusting the power generation power of the power supply side and the power consumption power of the load side, adjusting the active power and the reactive power, and performing uninterrupted power supply by using the energy storage battery.
The energy storage charging and discharging module comprises an energy storage charging and discharging machine and an energy storage battery, performs power regulation on a direct current bus, and performs peak clipping and valley filling on a power grid by combining with the current transformation module; the energy storage charging and discharging machine is used for charging and discharging the energy storage battery and stabilizing the voltage of the direct current bus.
The battery management module comprises an acquisition unit and a main control/display unit, and the monitored operation parameters comprise temperature, voltage of each battery and SOC value; and meanwhile, overvoltage, undervoltage and over-temperature protection of the energy storage battery are realized.
The power generation access module is accessed from a direct current bus of the converter module and comprises a photovoltaic sub-module and a wind electronic module, and the photovoltaic sub-module and the wind electronic module are configured with corresponding power grades according to the available area, the system load size and the power consumption requirement.
The comprehensive control module is used for monitoring and managing energy storage and grid connection, communicating, monitoring and managing an upper computer and devices (an energy storage charging and discharging machine, a bidirectional converter, an inverter, a photovoltaic converter and a wind power converter), and meanwhile, the comprehensive control module is used as a display unit of the running state of the devices, and a user can set the running parameters of the devices through the comprehensive control module.
The vehicle charging module is used for charging the power battery pack of the electric automobile and providing the running parameters and the diagnosis information of the charger.
The vehicle charging module is divided into a whole vehicle charging submodule and a sub-box charging submodule, and the whole vehicle charging submodule and the direct current charging pile jointly perform direct current charging on the electric vehicle; the alternating current charging pile carries out alternating current charging on the electric vehicle; the sub-box charging sub-module is used for charging the single-box battery, and the number of charging interfaces is set correspondingly according to different charging modes of the electric vehicle and the number of the local actual electric vehicles.
The vehicle battery replacement module is combined with the sub-box charging submodule for use, wherein the battery replacement equipment comprises an automatic battery replacement robot, manual semi-automatic battery replacement equipment and a stacker, and the one-time battery replacement time of the electric vehicle is 5-15 min.
The electric energy monitoring module monitors electric energy quality parameters of the inside and grid-connected side of the system, and the monitored operation parameters comprise harmonic waves, flicker, voltage fluctuation, frequency deviation and three-phase imbalance.
The regional power device comprises an electric energy management module, a fault protection module and a charging module.
The management modes of the power management module can be divided into the following modes.
(1) When the amount of electricity generated by the power generation equipment is balanced with the load of the user, the power required by the user is provided by the power generation equipment.
(2) When the electric quantity generated by the power generation equipment exceeds the load of a user, the exceeding electric quantity is supplied to regional public equipment such as a water pump, a street lamp and the like under the control of the electric energy management module and can be used for charging an electric automobile, and if residual electric quantity exceeding the application still exists, the residual electric quantity is stored in an energy storage battery so as to adjust the external load standby property of the whole region and serve as a backup power supply of the public equipment.
(3) When the electric quantity generated by the power generation equipment is not enough to meet the needs of users, the power distribution network and the power generation equipment supply power to the users in the region, and when the power generation equipment cannot output the electric quantity, the power distribution network and the energy storage power supply power to the users.
The energy storage battery is charged by power generation equipment, and the capacity of the energy storage battery is selected according to the load capacity and the load characteristic of the region and the energy characteristic of the power generation equipment; when the time that the power generation equipment can not provide the electric quantity exceeds a set threshold value, the energy storage battery can be charged by the power distribution network.
The fault protection module is used for carrying out fault protection on the power generation equipment and the energy storage battery and comprises a fault protection module and a fault protection module.
(1) Internal fault protection
When an internal fault occurs, the connection between the power generation equipment and the energy storage battery and the alternating current bus is cut off, and meanwhile, the action of the relay protection equipment is executed to cut off the fault.
(2) Islanding protection
When the power distribution network breaks down and cuts off the power supply to the area, an island protection action is executed, and the energy storage battery only reserves the standby power supply of the lighting equipment or the emergency public facilities.
And the charging module calculates the amount of money required to be paid by each household resident according to the power consumption of each household resident, the proportion of the electric energy generated by the power generation equipment and the electric energy provided by the power distribution network.
The monitoring and analyzing device comprises a power plant operation management module, an anti-electricity-stealing analysis module, a load analysis module, an electric quantity analysis module, a suspected power failure area monitoring module, a secondary network loss monitoring and analyzing module, an ordered electricity utilization decision module and a client side power supply quality monitoring module; wherein.
The power plant operation management is used for managing a power utilization by heat fixed electricity model, managing operation data, maintaining basic information of the power plant, counting comprehensive data of the power plant, counting data acquisition conditions, counting on-line conditions of a heat terminal and counting comprehensively by heat fixed electricity; and carrying out statistical analysis on comprehensive data of the power plant such as the power grid capacity, the generated energy, the power grid capacity, the on-line condition of the thermal terminal and the data acquisition condition, and maintaining the stable operation of the power plant.
The anti-electricity-stealing analysis module is used for performing anti-electricity-stealing comprehensive analysis, voltage loss and phase loss statistics, electric quantity differential analysis, user acquisition data analysis, magnetic field interference anomaly analysis, terminal electric quantity curve comparison analysis and power differential analysis; the abnormal electricity utilization phenomenon is tracked and processed by acquiring the electricity utilization abnormal detail of the power consumer.
The load analysis module is used for daily load analysis of a power supply unit, high-voltage client load collection, public area load collection, measuring point group load information, terminal group load display, load characteristic analysis, line curve data examination and inquiry, load data examination and inquiry, monitorable load examination and client group load collection;
the electric quantity analysis module is used for analyzing electricity consumption peak hours, electric energy peak valley, electric quantity mutation, electric energy same-proportion ring ratio, electric quantity and user electricity consumption trend.
The suspected power failure area monitoring module is used for monitoring a suspected power failure area in real time, checking and inquiring power failure information, checking and inquiring actual power failure information and detailed power failure information, displaying the number of key suspected power failure lines ending to a certain moment in each city in a map form, and providing detailed power failure information; the method comprises distribution transformer monitoring analysis, line loss analysis, multipoint user monitoring, important information push-out, fault flow tracking and data restoration.
And the secondary network loss monitoring and analyzing module is used for maintaining a secondary network loss model and analyzing the secondary network loss, defining the secondary network loss model according to the topological relation of the variable power distribution network and the management unit and the two calibers of the parallel caliber and the master caliber, counting the secondary network loss rate of each city according to two statistical modes of daily and monthly, and monitoring the secondary network loss rate, the ring ratio network loss rate and the abnormal information of the power supply unit.
The ordered power utilization decision module is used for ordered power utilization management analysis and ordered power utilization business operation, monitoring the load balance condition in real time, monitoring the execution condition of the ordered power utilization scheme, analyzing the effect of the ordered power utilization scheme from the structural and industrial aspects, and generating an analysis report of the execution effect of the ordered power utilization scheme; the method comprises the steps of ordered power utilization index management, ordered power utilization scheme management, ordered power utilization task compilation, ordered power utilization task execution, ordered power utilization task release, ordered power utilization analysis, ordered power utilization information release and ordered power utilization comprehensive query.
The client side power supply quality monitoring module is used for client side power supply quality management analysis and client side power supply quality business analysis, and is used for displaying the index curve, the data distribution condition and the out-of-limit analysis information of the voltage qualification rate, the three-phase imbalance rate and the harmonic distortion rate of each month in one year in a graph form, and performing analysis display of different dimensions according to corresponding examination conditions.
The invention has higher informatization degree and integration level, integrates the power management of vehicle charging and discharging and power exchanging modes and the power management and protection of a regional power network, and provides a more comprehensive monitoring and analyzing scheme.
Drawings
Fig. 1 is a structural diagram of a power management system according to the present invention.
Detailed Description
As shown in fig. 1, a power management system of the present invention includes: the system comprises a charging energy storage device, a regional power device and a monitoring analysis device; wherein.
The charging energy storage device comprises a current transformation module, an energy storage charging and discharging module, a battery management module, a power generation access module, a comprehensive control module, a vehicle charging module, a vehicle battery replacement module and an electric energy monitoring module; wherein.
The converter module is used for controlling the bidirectional flow of electric energy of a power grid, a direct current bus and a microgrid alternating current bus, comprises a bidirectional converter and an inverter, and controls the flow direction of current through two control modes of external control and automatic control so as to realize grid-connected and off-grid operation; and adjusting the power generation power of the power supply side and the power consumption power of the load side, adjusting the active power and the reactive power, and performing uninterrupted power supply by using the energy storage battery.
The energy storage charging and discharging module comprises an energy storage charging and discharging machine and an energy storage battery, performs power regulation on a direct current bus, and performs peak clipping and valley filling on a power grid by combining with the current transformation module; the energy storage charging and discharging machine is used for charging and discharging the energy storage battery and stabilizing the voltage of the direct current bus.
The battery management module comprises an acquisition unit and a main control/display unit, and the monitored operation parameters comprise temperature, voltage of each battery and SOC value; and meanwhile, overvoltage, undervoltage and over-temperature protection of the energy storage battery are realized.
The power generation access module is accessed from a direct current bus of the converter module and comprises a photovoltaic sub-module and a wind electronic module, and the photovoltaic sub-module and the wind electronic module are configured with corresponding power grades according to the available area, the system load size and the power consumption requirement.
Typical new energy power generation includes photovoltaic power generation and wind power generation. Solar energy and wind energy are renewable energy sources and can be continuously utilized, and meanwhile, the photovoltaic system and the wind power system are connected to reduce the utilization of the traditional energy sources, so that the emission of polluted gas is reduced.
The comprehensive control module is used for monitoring and managing energy storage and grid connection, communicating, monitoring and managing an upper computer and devices (an energy storage charging and discharging machine, a bidirectional converter, an inverter, a photovoltaic converter and a wind power converter), and meanwhile, the comprehensive control module is used as a display unit of the running state of the devices, and a user can set the running parameters of the devices through the comprehensive control module.
The vehicle charging module is used for charging the power battery pack of the electric automobile and providing the running parameters and the diagnosis information of the charger.
The vehicle charging module is divided into a whole vehicle charging submodule and a sub-box charging submodule, and the whole vehicle charging submodule and the direct current charging pile jointly perform direct current charging on the electric vehicle; the alternating current charging pile carries out alternating current charging on the electric vehicle; the sub-box charging sub-module is used for charging the single-box battery, and the number of charging interfaces is set correspondingly according to different charging modes of the electric vehicle and the number of the local actual electric vehicles.
The vehicle battery replacement module is combined with the sub-box charging submodule for use, wherein the battery replacement equipment comprises an automatic battery replacement robot, manual semi-automatic battery replacement equipment and a stacker, and the primary battery replacement time of the electric vehicle is 5-15min
The electric energy monitoring module monitors electric energy quality parameters of the inside and grid-connected side of the system, and the monitored operation parameters comprise harmonic waves, flicker, voltage fluctuation, frequency deviation and three-phase imbalance.
The regional power device comprises an electric energy management module, a fault protection module and a charging module.
The distribution network provides voltage support and a primary source of energy in the area, with the energy generated by the power generation equipment as a secondary source of energy. In order to install a bidirectional electric energy meter at a connection point of a regional power device and a power distribution network, all energy generated by power generation equipment in a region must be guaranteed to be consumed in the region and not to flow back to the power distribution network, so that the requirement of grid connection and no network access is met.
The management modes of the power management module can be divided into the following modes.
(1) When the amount of electricity generated by the power generation equipment is balanced with the load of the user, the power required by the user is provided by the power generation equipment.
(2) When the electric quantity generated by the power generation equipment exceeds the load of a user, the exceeding electric quantity is supplied to regional public equipment such as a water pump, a street lamp and the like under the control of the electric energy management module and can be used for charging an electric automobile, and if residual electric quantity exceeding the application still exists, the residual electric quantity is stored in an energy storage battery so as to adjust the external load standby property of the whole region and serve as a backup power supply of the public equipment.
(3) When the electric quantity generated by the power generation equipment is not enough to meet the needs of users, the power distribution network and the power generation equipment supply power to the users in the region, and when the power generation equipment cannot output the electric quantity, the power distribution network and the energy storage power supply power to the users.
The energy storage battery is charged by power generation equipment, and the capacity of the energy storage battery is selected according to the load capacity and the load characteristic of the region and the energy characteristic of the power generation equipment; when the time that the power generation equipment can not provide the electric quantity exceeds a set threshold value, the energy storage battery can be charged by the power distribution network.
The electric energy management module can optimize the operating efficiency of the whole regional power system according to the regional load characteristics, so that the electric quantity of the power generation equipment is utilized to the maximum, enough capacity is ensured to meet the energy storage requirement, and waste caused by overlarge capacity cannot be obtained.
The fault protection module is used for carrying out fault protection on the power generation equipment and the energy storage battery and comprises a fault protection module and a fault protection module.
(1) Internal fault protection
When an internal fault occurs, the connection between the power generation equipment and the energy storage battery and the alternating current bus is cut off, and meanwhile, the action of the relay protection equipment is executed to cut off the fault.
(2) Islanding protection
When the power distribution network breaks down and cuts off the power supply to the area, an island protection action is executed, and the energy storage battery only reserves the standby power supply of the lighting equipment or the emergency public facilities.
And the charging module calculates the amount of money required to be paid by each household resident according to the power consumption of each household resident, the proportion of the electric energy generated by the power generation equipment and the electric energy provided by the power distribution network.
The monitoring and analyzing device comprises a power plant operation management module, an anti-electricity-stealing analysis module, a load analysis module, an electric quantity analysis module, a suspected power failure area monitoring module, a secondary network loss monitoring and analyzing module, an ordered electricity utilization decision module and a client side power supply quality monitoring module; wherein.
The power plant operation management is used for managing a power utilization by heat fixed electricity model, managing operation data, maintaining basic information of the power plant, counting comprehensive data of the power plant, counting data acquisition conditions, counting on-line conditions of a heat terminal and counting comprehensively by heat fixed electricity; and carrying out statistical analysis on comprehensive data of the power plant such as the power grid capacity, the generated energy, the power grid capacity, the on-line condition of the thermal terminal and the data acquisition condition, and maintaining the stable operation of the power plant.
The anti-electricity-stealing analysis module is used for performing anti-electricity-stealing comprehensive analysis, voltage loss and phase loss statistics, electric quantity differential analysis, user acquisition data analysis, magnetic field interference anomaly analysis, terminal electric quantity curve comparison analysis and power differential analysis; the abnormal electricity utilization phenomenon is tracked and processed by acquiring the electricity utilization abnormal detail of the power consumer.
The load analysis module is used for daily load analysis of a power supply unit, high-voltage client load collection, public area load collection, measuring point group load information, terminal group load display, load characteristic analysis, line curve data examination and inquiry, load data examination and inquiry, monitorable load examination and client group load collection; therefore, the power load condition of each power supply unit can be monitored in time, and support is provided for effectively developing load control service.
The electric quantity analysis module is used for analyzing electricity consumption peak hours, electric energy peak valley, electric quantity mutation, electric energy same-proportion ring ratio, electric quantity and user electricity consumption trend; the power utilization condition of the power consumer is mastered in time, and the supervision of the power consumption of the power consumer is enhanced.
The suspected power failure area monitoring module is used for monitoring a suspected power failure area in real time, checking and inquiring power failure information, checking and inquiring actual power failure information and detailed power failure information, displaying the number of key suspected power failure lines ending to a certain moment in each city in a map form, and providing detailed power failure information; the method comprises distribution transformer monitoring analysis, line loss analysis, multipoint user monitoring, important information push-out, fault flow tracking and data restoration.
And the secondary network loss monitoring and analyzing module is used for maintaining a secondary network loss model and analyzing the secondary network loss, defining the secondary network loss model according to the topological relation of the variable power distribution network and the management unit and the two calibers of the parallel caliber and the master caliber, counting the secondary network loss rate of each city according to two statistical modes of daily and monthly, and monitoring the secondary network loss rate, the ring ratio network loss rate and the abnormal information of the power supply unit.
The ordered power utilization decision module is used for ordered power utilization management analysis and ordered power utilization business operation, monitoring the load balance condition in real time, monitoring the execution condition of the ordered power utilization scheme, analyzing the effect of the ordered power utilization scheme from the structural and industrial aspects, and generating an analysis report of the execution effect of the ordered power utilization scheme; the method comprises the steps of ordered power utilization index management, ordered power utilization scheme management, ordered power utilization task compilation, ordered power utilization task execution, ordered power utilization task release, ordered power utilization analysis, ordered power utilization information release and ordered power utilization comprehensive query.
The client side power supply quality monitoring module is used for client side power supply quality management analysis and client side power supply quality business analysis, and is used for displaying the index curve, the data distribution condition and the out-of-limit analysis information of the voltage qualification rate, the three-phase imbalance rate and the harmonic distortion rate of each month in one year in a graph form, and performing analysis display of different dimensions according to corresponding examination conditions.
The charging energy storage device, the regional power device and the monitoring analysis device can realize device functions through corresponding modules, the charging energy storage device, the regional power device and the monitoring analysis device and the modules are connected in a logic or electric mode, and specific functions of the modules can be realized by executing program codes stored in a memory through a physical processor.
The invention has higher informatization degree and integration level, integrates the power management of vehicle charging and discharging and power exchanging modes and the power management and protection of a regional power network, and provides a more comprehensive monitoring and analyzing scheme.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A power management system, comprising: the system comprises a charging energy storage device, a regional power device and a monitoring analysis device; wherein,
the charging energy storage device comprises a current transformation module, an energy storage charging and discharging module, a battery management module, a power generation access module, a comprehensive control module, a vehicle charging module, a vehicle battery replacement module and an electric energy monitoring module; wherein,
the converter module is used for controlling the bidirectional flow of electric energy of a power grid, a direct current bus and a microgrid alternating current bus, comprises a bidirectional converter and an inverter, and controls the flow direction of current through two control modes of external control and automatic control so as to realize grid-connected and off-grid operation; adjusting the power generation power at the power supply side and the power consumption power at the load side, adjusting the active power and the reactive power, and performing uninterrupted power supply by using an energy storage battery;
the energy storage charging and discharging module comprises an energy storage charging and discharging machine and an energy storage battery, performs power regulation on a direct current bus, and performs peak clipping and valley filling on a power grid by combining with the current transformation module; the energy storage charging and discharging machine is used for charging and discharging the energy storage battery and stabilizing the voltage of the direct current bus;
the battery management module comprises an acquisition unit and a main control/display unit, and the monitored operation parameters comprise temperature, voltage of each battery and SOC value; meanwhile, overvoltage, undervoltage and over-temperature protection of the energy storage battery are realized;
the power generation access module is accessed from a direct current bus of the converter module and comprises a photovoltaic sub-module and a wind electronic module, and the photovoltaic sub-module and the wind electronic module are configured with corresponding power grades according to the available area, the system load size and the power consumption requirement;
the comprehensive control module is used for monitoring and managing energy storage and grid connection, communicating, monitoring and managing an upper computer and each device (an energy storage charging and discharging machine, a bidirectional converter, an inverter, a photovoltaic converter and a wind power converter), and meanwhile, the comprehensive control module is used as a display unit of the running state of each device, and a user can set the running parameters of each device through the comprehensive control module;
the vehicle charging module is used for charging a power battery pack of the electric automobile and providing operating parameters and diagnostic information of a charger;
the vehicle charging module is divided into a whole vehicle charging submodule and a sub-box charging submodule, and the whole vehicle charging submodule and the direct current charging pile jointly perform direct current charging on the electric vehicle; the alternating current charging pile carries out alternating current charging on the electric vehicle; the sub-box charging submodule is used for charging the single-box battery, and the corresponding number of charging interfaces is set according to different charging modes of the electric vehicle and the number of local actual electric vehicles;
the vehicle battery replacement module is combined with the sub-box charging submodule for use, wherein the battery replacement equipment comprises an automatic battery replacement robot, manual semi-automatic battery replacement equipment and a stacker, and the primary battery replacement time of the electric vehicle is 5-15 min;
the electric energy monitoring module monitors electric energy quality parameters inside the system and on a grid-connected side, and the monitored operation parameters comprise harmonic waves, flicker, voltage fluctuation, frequency deviation and three-phase imbalance;
the regional power device comprises an electric energy management module, a fault protection module and a charging module;
the management modes of the electric energy management module can be divided into the following modes:
(1) when the electric quantity generated by the power generation equipment is balanced with the load of the user, the electric energy required by the user is provided by the power generation equipment;
(2) when the electric quantity generated by the power generation equipment exceeds the load of a user, the exceeding electric quantity is supplied to regional public equipment such as a water pump, a street lamp and the like under the control of the electric energy management module and can be used for charging an electric automobile, and if the remaining electric quantity exceeding the applications still exists, the remaining electric quantity is stored in an energy storage battery so as to adjust the external load standby property of the whole region and serve as a standby power supply of the public equipment;
(3) when the electric quantity generated by the power generation equipment is not enough to meet the requirement of a user, the power distribution network and the power generation equipment supply power to the user simultaneously in the area, and when the power generation equipment cannot output the electric quantity, the power distribution network and the energy storage power supply power to the user;
the energy storage battery is charged by power generation equipment, and the capacity of the energy storage battery is selected according to the load capacity and the load characteristic of the region and the energy characteristic of the power generation equipment; when the time that the power generation equipment cannot provide electric quantity exceeds a set threshold value, the energy storage battery can be charged by the power distribution network;
the fault protection module is used for carrying out fault protection on the power generation equipment and the energy storage battery, and comprises:
(1) internal fault protection
When an internal fault occurs, the connection between the power generation equipment and the energy storage battery and the alternating current bus is cut off, and meanwhile, the action of the relay protection equipment is executed to cut off the fault;
(2) islanding protection
When the power distribution network breaks down and cuts off the power supply to the area, an island protection action is executed, and the energy storage battery only reserves the standby power supply of the lighting equipment or the emergency public facility;
the charging module calculates the amount of money required to be paid by each household resident according to the power consumption of each household resident, the proportion of the electric energy generated by the power generation equipment to the electric energy provided by the power distribution network;
the monitoring and analyzing device comprises a power plant operation management module, an anti-electricity-stealing analysis module, a load analysis module, an electric quantity analysis module, a suspected power failure area monitoring module, a secondary network loss monitoring and analyzing module, an ordered electricity utilization decision module and a client side power supply quality monitoring module; wherein,
the power plant operation management is used for managing a power utilization by heat fixed electricity model, managing operation data, maintaining basic information of the power plant, counting comprehensive data of the power plant, counting data acquisition conditions, counting on-line conditions of a heat terminal and counting comprehensively by heat fixed electricity; the comprehensive data of the power plant on-line electric quantity, the generated energy, the power consumption, the on-line condition of the thermal terminal and the data acquisition condition are subjected to statistical analysis, and the stable operation of the power plant is maintained;
the anti-electricity-stealing analysis module is used for performing anti-electricity-stealing comprehensive analysis, voltage loss and phase loss statistics, electric quantity differential analysis, user acquisition data analysis, magnetic field interference anomaly analysis, terminal electric quantity curve comparison analysis and power differential analysis; tracking and processing abnormal electricity utilization phenomena by acquiring electricity utilization abnormal details of power consumers;
the load analysis module is used for daily load analysis of a power supply unit, high-voltage client load collection, public area load collection, measuring point group load information, terminal group load display, load characteristic analysis, line curve data examination and inquiry, load data examination and inquiry, monitorable load examination and client group load collection;
the electric quantity analysis module is used for analyzing electricity consumption peak hours, electric energy peak valley, electric quantity mutation, electric energy same-proportion ring ratio, electric quantity and user electricity consumption trend;
the suspected power failure area monitoring module is used for monitoring a suspected power failure area in real time, checking and inquiring power failure information, checking and inquiring actual power failure information and detailed power failure information, displaying the number of key suspected power failure lines ending to a certain moment in each city in a map form, and providing detailed power failure information; the method comprises the steps of distribution transformer monitoring analysis, line loss analysis, multipoint user monitoring, important information push-out, fault flow tracking and data restoration;
the secondary network loss monitoring and analyzing module is used for maintaining a secondary network loss model and analyzing the secondary network loss, defining the secondary network loss model according to the topological relation of the variable power distribution network and a management unit and according to the merging surface caliber and the mother caliber, counting the secondary network loss rate of each city according to two statistical modes of daily and monthly, and monitoring the secondary network loss rate, the ring ratio network loss rate and abnormal information of a power supply unit;
the ordered power utilization decision module is used for ordered power utilization management analysis and ordered power utilization business operation, monitoring the load balance condition in real time, monitoring the execution condition of the ordered power utilization scheme, analyzing the effect of the ordered power utilization scheme from the structural and industrial aspects, and generating an analysis report of the execution effect of the ordered power utilization scheme; the method comprises the steps of ordered power utilization index management, ordered power utilization scheme management, ordered power utilization task compilation, ordered power utilization task execution, ordered power utilization task release, ordered power utilization analysis, ordered power utilization information release and ordered power utilization comprehensive query;
the client side power supply quality monitoring module is used for client side power supply quality management analysis and client side power supply quality business analysis, and is used for displaying the index curve, the data distribution condition and the out-of-limit analysis information of the voltage qualification rate, the three-phase imbalance rate and the harmonic distortion rate of each month in one year in a graph form, and performing analysis display of different dimensions according to corresponding examination conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287465.9A CN110896221B (en) | 2019-12-14 | 2019-12-14 | Power management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287465.9A CN110896221B (en) | 2019-12-14 | 2019-12-14 | Power management system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110896221A true CN110896221A (en) | 2020-03-20 |
| CN110896221B CN110896221B (en) | 2022-04-26 |
Family
ID=69788548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911287465.9A Active CN110896221B (en) | 2019-12-14 | 2019-12-14 | Power management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110896221B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751340A (en) * | 2020-12-31 | 2021-05-04 | 江苏南高智能装备创新中心有限公司 | Power grid power supply scheduling method and device based on big data analysis |
| CN114113870A (en) * | 2022-01-28 | 2022-03-01 | 西安德纳检验检测有限公司 | New energy station power grid adaptability detection method, device and system |
| CN115189384A (en) * | 2022-06-23 | 2022-10-14 | 深圳市鸿嘉利新能源有限公司 | Microgrid energy storage charging and discharging management method based on V2G |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509162A (en) * | 2011-11-18 | 2012-06-20 | 深圳市科陆电子科技股份有限公司 | Intelligent resident electricity utilization management method and management system |
| CN102916442A (en) * | 2012-10-17 | 2013-02-06 | 北京科诺伟业科技有限公司 | Building photovoltaic grid-connected system |
| EP2806520A1 (en) * | 2013-05-22 | 2014-11-26 | Vito NV | Power supply network control system and method |
| CN110071579A (en) * | 2019-06-05 | 2019-07-30 | 国网北京市电力公司 | Power grid power supply based on ubiquitous electric power Internet of Things ensures and intelligent managing and control system |
-
2019
- 2019-12-14 CN CN201911287465.9A patent/CN110896221B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509162A (en) * | 2011-11-18 | 2012-06-20 | 深圳市科陆电子科技股份有限公司 | Intelligent resident electricity utilization management method and management system |
| CN102916442A (en) * | 2012-10-17 | 2013-02-06 | 北京科诺伟业科技有限公司 | Building photovoltaic grid-connected system |
| EP2806520A1 (en) * | 2013-05-22 | 2014-11-26 | Vito NV | Power supply network control system and method |
| CN110071579A (en) * | 2019-06-05 | 2019-07-30 | 国网北京市电力公司 | Power grid power supply based on ubiquitous electric power Internet of Things ensures and intelligent managing and control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751340A (en) * | 2020-12-31 | 2021-05-04 | 江苏南高智能装备创新中心有限公司 | Power grid power supply scheduling method and device based on big data analysis |
| CN114113870A (en) * | 2022-01-28 | 2022-03-01 | 西安德纳检验检测有限公司 | New energy station power grid adaptability detection method, device and system |
| CN114113870B (en) * | 2022-01-28 | 2022-04-26 | 西安德纳检验检测有限公司 | New energy station power grid adaptability detection method, device and system |
| CN115189384A (en) * | 2022-06-23 | 2022-10-14 | 深圳市鸿嘉利新能源有限公司 | Microgrid energy storage charging and discharging management method based on V2G |
| CN115189384B (en) * | 2022-06-23 | 2024-04-30 | 深圳市鸿嘉利新能源有限公司 | V2G-based micro-grid energy storage charge and discharge management method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110896221B (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103337869B (en) | A kind of method of novel battery energy-storage system and function integration design thereof | |
| CN110896221B (en) | Power management system | |
| Zhang et al. | Emerging smart grid technology for mitigating global warming | |
| CN112821381A (en) | Automatic power generation control method and system for distributed power supply in micro-grid | |
| Amir et al. | Integration of EVs aggregator with microgrid and impact of V2G power on peak regulation | |
| Falvo et al. | D-STATCOM with energy storage system for application in Smart Micro-Grids | |
| Machado et al. | Multi-source distributed energy resources management system based on pattern search optimal solution using nonlinearized power flow constraints | |
| Linhao et al. | Reliability evaluation of microgrid considering electric vehicles and demand response | |
| Eidiani | Integration of renewable energy sources | |
| Yang et al. | Review of vehicle to grid integration to support power grid security | |
| Xv et al. | Day-ahead scheduling with renewable generation considering shared energy storage | |
| WO2014018884A1 (en) | Methods and systems for managing distributed energy resources | |
| CN114784789B (en) | Iron tower basic station new forms of energy storage teletransmission electrical power generating system | |
| JP2019134632A (en) | Power supply method, information processing program, and power supply apparatus | |
| Pérez et al. | Frequency regulation of a weak microgrid through a distribution management system | |
| Begovic et al. | Harmonic distortion in microgrids and distribution systems with photovoltaic generators | |
| Kumar et al. | A Critical Review of Distributed Generations Planning in Distribution Networks for Improved System Performances | |
| John et al. | FACTS devices with battery-based energy storage-extending the reach of traditional grid stability systems | |
| Zhu et al. | Study on the optimal configuration strategy of photovoltaic and energy storage in distribution network | |
| Yi et al. | Research on the regulation technology of the PV-storage based on the real-time interaction of source and load | |
| Chao-Tsung et al. | Design and Construction of Microgrid in Small Factories | |
| Ton | Smart grid program at the US Doe | |
| Umoh | Hosting capacity assessment of electric vehicle charging in residential low voltage distribution networks | |
| Yu et al. | Comprehensive Benefit Evaluation of Distributed Photovoltaic Power Generation System with DC Interconnection Based on Benefit-Cost Ratio | |
| Gao et al. | Optimal Planning of Distribution Network Considering Reliability Demand Response |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220411 Address after: No. 40, zone 1, No. 5 Industrial Zone, Shangfen community, Minzhi street, Longhua District, Shenzhen, Guangdong 518000 Applicant after: Shenzhen Huadian intelligent Limited by Share Ltd. Address before: Sunshine Garden, 70 Huitang Road, Changle District, Fuzhou City, Fujian Province Applicant before: Li Yao |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |