CN105656050A - Intelligent energy storage and power distribution system - Google Patents

Intelligent energy storage and power distribution system Download PDF

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Publication number
CN105656050A
CN105656050A CN201610160882.7A CN201610160882A CN105656050A CN 105656050 A CN105656050 A CN 105656050A CN 201610160882 A CN201610160882 A CN 201610160882A CN 105656050 A CN105656050 A CN 105656050A
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CN
China
Prior art keywords
module
energy
charging
low
low pressure
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Pending
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CN201610160882.7A
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Chinese (zh)
Inventor
李澄宇
瞿苏寒
岳卫华
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Nanjing Fenghe Automation Technology Co Ltd
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Nanjing Fenghe Automation Technology Co Ltd
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Priority to CN201610160882.7A priority Critical patent/CN105656050A/en
Publication of CN105656050A publication Critical patent/CN105656050A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J7/0027
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/50The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
    • H02J2310/56The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
    • H02J2310/62The condition being non-electrical, e.g. temperature
    • H02J2310/64The condition being economic, e.g. tariff based load management

Abstract

The invention discloses an intelligent energy storage and power distribution system. The intelligent energy storage and power distribution system comprises a voltage reduction module, a charging module, an energy storage module, a data collecting module and a monitoring module. The voltage reduction module is connected with a high-voltage single bus and a low-voltage single bus. The charging module is connected with the low-voltage single bus and is used for providing charging voltage for equipment to be charged. The data collecting module is used for collecting the electrovalence of a power grid and the load information of the charging module and sending the electrovalence of the power grid and the load information of the charging module to the monitoring module. The monitoring module is used for sending an energy storage or energy release instruction to the energy storage module according to the electrovalence of the power grid and the load information of the charging module. The energy storage module is connected with the monitoring module and the low-voltage single bus and is used for storing energy or releasing energy according to the energy storage or energy release instruction sent by the monitoring module. The intelligent energy storage and power distribution system effectively solves the problem that it is difficult to charge private electric vehicles in residence communities or industrial parks.

Description

The energy storage of a kind of intelligence and power distribution system
Technical field
The present invention relates to charging plant technical field, particularly relate to the energy storage of a kind of intelligence and power distribution system.
Background technology
Electromobile through nearly ten years research and development and demonstrating running, tentatively possess industrialized development basis. Meanwhile, the problems such as charging Infrastructure wretched insufficiency, charging difficulty also highlight day by day, seriously constrain the development of ev industry. To this, national grid establishes special filling and changes power station, but not yet solves the private charging electric vehicle problem in residential quarters and industrial park.
Usually, what time need below consideration when residential quarters and industrial park construction charging facility: one, local distribution network receives ability limited. Specifically, for the ripe Residential areas of development, commercial zone, early stage power grid construction does not consider charging workload demand, and distribution apparatus of load level reaches capacity state substantially. Two, distribution network performance driving economy reduces. Specifically, charging load has obviously fluctuation, and the development of rapid nitriding makes the controllability of charging load reduce, it is very difficult to ensure that charging behavior occurred in the system loading low ebb phase. Therefore, the peak-valley difference of system may widen further because of the intervention of behavior of charging, thus reduces the utilising efficiency of distribution network power-supply unit. Three, the electrical network quality of power supply is influenced. Specifically, charging equipment of electric automobile is a kind of typical power electronics ac-dc conversion equipment, and the rectification mode of its inside is generally three-phase bridge rectification and pulse rectification. When charging plant works, rectifier cell can produce harmonic pollution, and quality of power supply impact is bigger. Four, land used resource in residential quarters is nervous.
On the basis considering above influence factor, the present invention provides the energy storage of a kind of intelligence and power distribution system, can effectively solve a charging difficult problem for power truck in residential quarters, industrial park.
Summary of the invention
It is an object of the invention to propose the energy storage of a kind of intelligence and power distribution system, effectively to solve a charging difficult problem for private power truck in residential quarters and industrial park.
Intelligent energy storage according to the present invention and power distribution system, comprising: voltage reduction module, charging module, data acquisition module, monitoring module, energy-storage module;
Described voltage reduction module comprises first and second transformer; First and second transformer is all connected with high pressure list bus, low pressure list bus, for electrical network high pressure is changed into low pressure;
Described charging module is connected with low pressure list bus, for providing charging voltage for charging equipment;
Described data acquisition module is for gathering the electricity price of electrical network, the information on load of charging module, and send is to described monitoring module;
Described monitoring module sends energy storage or release and can indicate according to the electricity price of described electrical network, the information on load of charging module to described energy-storage module;
Described energy-storage module is connected with described low pressure list bus, described monitoring module, carries out energy storage for the energy storage instruction sent according to described monitoring module, or releases to indicate carry out releasing energy according to what described monitoring module sent.
Preferably, the load P being paddy valency and charging module when electrical network electricity price is less than the first load threshold value P1Time, described monitoring module sends energy storage instruction to described energy-storage module; The load P being paddy valency and charging module when electrical network electricity price is greater than the first load threshold value P1Time, described monitoring module sends to described energy-storage module and releases and can indicate; When the electricity price of electrical network is electrical network peak valency, described monitoring module sends to described energy-storage module and releases and can indicate.
Preferably, described data acquisition module is also for gathering the total load value P of the original electrical equipment of electrical network2, and send it to described monitoring module;
Described monitoring module is according to the total load value P of the original electrical equipment of electrical network received2, it is determined that the first load threshold value P1,
P1=P0-P2;
Wherein, P0For the maximum load value that can carry during electric power netting safe running.
Preferably, described energy-storage module comprises micro-processing unit, N number of energy-storage units, secondary battery state managing unit; Each energy-storage units comprises 1 bi-directional inverter, 1 secondary battery;
The energy storage instruction that described micro-processing unit sends according to described monitoring module and the battery status information that secondary battery state managing unit sends, send charging instruction to N number of bi-directional inverter; The battery status information that described micro-processing unit can indicate according to releasing of sending of described monitoring module and secondary battery state managing unit sends, sends electric discharge instruction to N number of bi-directional inverter; Secondary battery is carried out charge or discharge according to the charge or discharge instruction received by described bi-directional inverter; Described secondary battery state managing unit is for monitoring the battery status information of N number of secondary battery, and described battery status information is sent to described micro-processing unit; Wherein, N be more than or equal to 1 integer.
Preferably, described system also comprises high-tension switch cabinet, low-tension switch cabinet;
Described high pressure list bus is positioned at described high-tension switch cabinet, and described low pressure list bus is positioned at described low-tension switch cabinet;
Described high-tension switch cabinet also comprises high pressure input circuit, first, second high pressure feedline circuit; One end of described high pressure input circuit is connected with electrical network inlet wire cable, and the other end is connected with high pressure list bus; One end of first, second high pressure feedline circuit is connected with high pressure list bus, and the other end is connected with the high-tension side of first and second transformer;
Described low-tension switch cabinet also comprises first, second low pressure input circuit, low pressure feedline circuit; One end of first, second low pressure input circuit is corresponding with the low-tension side of first, second transformer to be connected, and the other end is connected with low pressure list bus; One end of low pressure feedline circuit is connected with low pressure list bus, and the other end is connected with described charging module, described energy-storage module.
Preferably, described charging module comprises low-tension distribution box, charging pile;
Described low-tension distribution box comprises: the miniature circuit breaker of breaker of plastic casing, multiple parallel connection; Wherein, one end of described breaker of plastic casing is connected with one end of described miniature circuit breaker, and the other end is connected with the low pressure feedline circuit in described low voltage switchgear by cable; The other end of described miniature circuit breaker is connected with described charging pile.
Preferably, first and second transformer is Covered transformer, and described high-tension switch cabinet is air isolation loading switch cabinet, and described low-tension switch cabinet is metal enclosed draw out switchgear cabinet.
Preferably, in described high-tension switch cabinet, described high pressure input circuit comprises: the first on-load switch, the first current transformer, the first thunder arrester, the first electrification display; Wherein, the first end of the first on-load switch is connected with high pressure list bus, and the 2nd end is connected with one end of the first current transformer, and the 3rd end is connected to the ground; The other end of the first current transformer is connected with the first thunder arrester, the first electrification display, electrical network inlet wire cable;
First, second high pressure feedline circuit includes: the 2nd on-load switch, grounding switch, the first fusible cut-out, the 2nd current transformer, the 2nd thunder arrester, the 2nd electrification display; Wherein, the first end of the 2nd on-load switch is connected with high pressure list bus, and the 2nd end is connected with one end of the first fusible cut-out, the 3rd end ground connection; The other end of the first fusible cut-out is connected with one end of grounding switch, the 2nd current transformer; The other end of the 2nd current transformer and the 2nd thunder arrester, the 2nd electrification display, first or the 2nd the high-tension side tie cable of transformer be connected.
Preferably, in described low-tension switch cabinet, first, second low pressure input circuit includes: the first isolating switch, the 3rd current transformer, Surge Protector, the 2nd fusible cut-out; One end of first isolating switch with first or the 2nd the low-tension side of transformer be connected, the other end is connected with the 3rd current transformer; The other end of the 3rd current transformer is connected respectively with one end, the low-voltage bus bar of the 2nd fusible cut-out; The other end of the 2nd fusible cut-out is connected with Surge Protector;
Low pressure feedline circuit comprises first to fourth low pressure feedline circuit; First to fourth low pressure feedline circuit includes multiple feeder line branch road; Described feeder line branch road comprises: the 2nd isolating switch, the 4th current transformer; One end of 2nd isolating switch is connected with low pressure list bus, and the other end is connected with one end of the 4th current transformer; The other end of the 4th current transformer is feeder line output terminal, and described feeder line output terminal is connected with charging module, energy-storage module;
Preferably, described system also comprises metering and billing module; Described metering and billing module is connected with charging module, for obtaining power consumption and the electricity cost of charging module in real time.
The intelligent energy storage of the present invention and power distribution system comprise: voltage reduction module, charging module, data acquisition module, monitoring module, energy-storage module. The present invention monitors module and sends energy storage or release and can indicate according to the electricity price of electrical network, the information on load of charging module to energy-storage module, by utilizing electricity price between peak and valley to reach maximum profit, and electrical network load can not only can be carried out peak load shifting.
Accompanying drawing explanation
By the embodiment part provided referring to accompanying drawing, the features and advantages of the present invention will become easier to understand, in the accompanying drawings:
Fig. 1 is the intelligent energy storage of the embodiment of the present invention and the structural representation of power distribution system;
Fig. 2 is that the monitoring module in the embodiment of the present invention is to the control principle schematic of energy-storage module;
Fig. 3 is the principle schematic determining the first load threshold value in the embodiment of the present invention;
Fig. 4 is the structural representation of the energy-storage module in the embodiment of the present invention;
Fig. 5 .1 is the internal electric connection diagram of terminal type high-tension switch cabinet in the invention process;
Fig. 5 .2 is the internal electric connection diagram of looped network type high-tension switch cabinet in the embodiment of the present invention;
Fig. 6 is the internal electric connection diagram of low-tension switch cabinet in the embodiment of the present invention;
Fig. 7 is the internal electric connection diagram of low-tension distribution box in the embodiment of the present invention;
L1, high pressure list bus; L2, low pressure list bus; 1, voltage reduction module; 101, the first transformer; 102, the 2nd transformer; 2, charging module; 3, energy-storage module; 4, data acquisition module; 5, module is monitored; 301, micro-processing unit; 302, energy-storage units; 303 store battery state managing unit; 3021, bi-directional inverter; 3022, secondary battery; 6, high-tension switch cabinet; 601, high pressure input circuit; 602, the first high pressure feedline circuit; 603, the 2nd high pressure feedline circuit; 604, third high pressure feedline circuit; 7, low-tension switch cabinet; 201, low-tension distribution box.
Embodiment
With reference to the accompanying drawings the illustrative embodiments of the present invention is described in detail. It is only for demonstration object to the description of illustrative embodiments, and it is never to the restriction of the present invention and application or usage.
Along with the development of ev industry, charging Infrastructure seriously lacks, difficult problem of charging highlights day by day. Although national grid set up special filling and changes power station, but the problem that in residential quarters, industrial park, private power truck charging is difficult not yet solves.
In order to solve the problem of residential quarters, industrial park charging electric vehicle difficulty, the present invention provides the energy storage of a kind of intelligence and power distribution system, comprising: voltage reduction module, charging module, data acquisition module, monitoring module, energy-storage module. Wherein, voltage reduction module comprises first and second transformer, for electrical network high pressure is changed into electrical network low pressure; Charging module is used for as charging equipment provides charging voltage; Data acquisition module is for gathering the electricity price of electrical network, the information on load of charging module, and send is to monitoring module; Monitoring module is used for according to the electricity price of described electrical network, the information on load of charging module is to energy-storage module transmission energy storage or releases and can indicate; Energy-storage module is connected with described low pressure list bus, described monitoring module, carries out energy storage for the energy storage instruction sent according to described monitoring module, or releases to indicate carry out releasing energy according to what described monitoring module sent. The system of the present invention can on the basis not increasing existing grid power load, the balanced electricity consumption of electrical network can not only be improved, reduce electrical network load, improve utilization rate of electrical, interests maximumization can be realized according to electricity price between peak and valley simultaneously, efficiently solve the problem that in residential quarters, industrial park, private power truck charging is difficult.
Below in conjunction with accompanying drawing, the technical scheme of the embodiment of the present invention is described in detail. As seen from Figure 1, the intelligent energy storage in the embodiment of the present invention and power distribution system comprise: voltage reduction module 1, charging module 2, data acquisition module 4, monitoring module 5, energy-storage module 3. Preferably, in order to reach the object of sale of electricity, described system also needs to comprise the metering and billing module (not shown) being connected with charging module 2, to obtain the power consumption of charging module in real time and to calculate electricity cost.
Voltage reduction module 1 comprises the first transformer 101, the 2nd transformer 102. First transformer 101, the 2nd transformer 102 are all connected with high pressure list bus L1, low pressure list bus L2, for high pressure is changed into low pressure. In embodiments of the present invention, high pressure list bus L1 chooses the copper busbar of 10KV, and low pressure list bus L2 chooses the copper busbar of 0.4KV. By arranging first and second transformer of paired running in the embodiment of the present invention, it is possible to reduce the heat dissipation capacity of transformer, reduce Financial cost. For solving the problem of community land resources anxiety, Covered transformer can preferentially be chosen by first and second transformer. In the specific implementation, this Covered transformer can be arranged in outdoor hole according to field condition.
Charging module 2 is connected with low pressure list bus L2, for providing charging voltage for charging equipment. Preferably, charging module 2 comprises low-tension distribution box 201, charging pile. In the specific implementation, low-tension distribution box 201 can be set in the distribute position of Relatively centralized of charging pile, and make this low-tension distribution box 201 of the emanant access of charging pile. Interchangeable, it is possible to make charging pile chain type access low-tension distribution box 201. In embodiments of the present invention, the switch box of 380V selected by low-tension distribution box 201, and charging pile selects voltage 220V, electric current to be 16A or/and the alternating-current charging pile of 32A.
Fig. 7 shows the internal electric interface chart of a kind of low-tension distribution box. As can be seen from Fig. 7, low-tension distribution box 201 comprises: the miniature circuit breaker of breaker of plastic casing, multiple parallel connection. Wherein, one end of described miniature circuit breaker is connected with breaker of plastic casing, and the other end is connected with the low pressure feedline circuit in low-tension switch cabinet 7 cabinet by cable; The other end of described miniature circuit breaker is connected with charging pile. By arranging low-voltage circuit breaker in low-tension distribution box, the effect of open circuit protection, overload protection, control and isolation can be played.
Data acquisition module 4 is for gathering the electricity price of electrical network, the information on load of charging module, and send is to monitoring module 5. Monitoring module 5 sends energy storage to energy-storage module 3 and indicates according to the electricity price of described electrical network, the information on load of charging module or release and can indicate. Energy-storage module 3 and low pressure list bus L2, monitoring module 5 are connected, carry out energy storage for the energy storage instruction sent according to monitoring module 5, or releasing to indicate and carry out releasing energy according to monitoring module 5 transmission.
Concrete, as seen from Figure 2, when the electrical network electricity price monitoring module 5 reception is electric-net valley valency, it is by whether the load P judging charging module further is less than the first load threshold value P1. If the load P of charging module is less than the first load threshold value P1, monitoring module 5 sends energy storage instruction to energy-storage module 3; If the load P of charging module is greater than the first load threshold value P1Time, monitoring module 5 sends to energy-storage module 3 and releases and can indicate. When the electrical network electricity price monitoring module 5 reception is peak valency, it will send to energy-storage module 3 and release and can indicate. In the embodiment of the present invention, it is that valency accumulator system in season in peak is released energy, is paddy valency and P < P in electrical network electricity price in electrical network electricity price1Accumulator system energy storage in season, can not only utilize electricity price between peak and valley to generate profit maximumization, and can to the original electric power load " peak load shifting " of electrical network, reduction electrical network load, raising utilization rate of electrical; It is paddy valency and P > P in electrical network electricity price1Season, accumulator system released energy, and during effectively alleviating electric-net valley valency, a large amount of unordered charging behavior is on the impact of the original load of electrical network.
General, the first load threshold value P1For the constant being set in advance in monitoring module 5. Preferably, in embodiments of the present invention, the first load threshold value P1For can carry out the parameter adjusted according to operation of power networks situation. Fig. 3 gives in the embodiment of the present invention and determines P according to operation of power networks situation1Principle schematic. As shown in Figure 3, data acquisition module 4 gathers the total load value P of the original electrical equipment of electrical network2, and send it to monitoring module 5. Wherein, the total load of the original electrical equipment of electrical network refers to the total load value of user power utilization equipment in original power supply-distribution system in community or garden. Monitoring module 5 is according to the total load value P of the original electrical equipment of electrical network received2, it is determined that the first load threshold value P1,
P1=P0-P2;
Wherein, P0For the maximum load value that can carry during electric power netting safe running, its concrete value can be determined according to engineering practical situation. In the embodiment of the present invention, determine the first load threshold value by obtaining operation of power networks situation, it is to increase the control accuracy of monitoring module, is more conducive to being carried out " peak load shifting " by the original electric power load of electrical network.
In the embodiment of the present invention, the Inner Constitution of energy-storage module 3 as shown in Figure 4, comprising: micro-processing unit 301, N number of energy-storage units 302, secondary battery state managing unit 303. Wherein, N be more than or equal to 1 integer. Further, each energy-storage units comprises 1 bi-directional inverter, 3021,1 secondary battery 3022. In actual applications, total stored energy capacitance of energy-storage module, the number of energy-storage units can be determined according to requirement of engineering. Such as, total stored energy capacitance 2MWh of energy-storage module, the number N=4 of energy-storage units in the embodiment of the present invention, the rated output of each two-way current transformer is 50KW, and the specified energy storage of each secondary battery is 0.5MWh. Further, secondary battery can choose the deeper cavity nano cilicon fibre solid battery of excellent property, to meet user to demands such as battery long service life, deep discharge good cycle, temperature use range are wide.
In the energy-storage module 3 shown in Fig. 4, secondary battery state managing unit 303 is for monitoring the battery status information of N number of secondary battery 3022, and described battery status information is sent to micro-processing unit 301. Wherein, the battery status information of secondary battery comprises: temperature, voltage, charging and discharging currents, current battery energy storage. The battery status information that micro-processing unit 301 sends according to the energy storage instruction of monitoring module 5 transmission and secondary battery state managing unit 303, sends charging instruction to N number of bi-directional inverter 3021; Or, micro-processing unit 301 according to monitoring module 5 send release can indicate and secondary battery state managing unit 303 send battery status information, to N number of bi-directional inverter 3021 transmission discharge instruction. Secondary battery 3022 is carried out charge or discharge according to the charge or discharge instruction received by bi-directional inverter 3021. In the embodiment of the present invention, by arranging micro-processing unit in energy-storage module, it is achieved that to the intelligent control of energy-storage module discharge and recharge so that energy-storage module can safely and steadily run when unmanned on duty. In addition, the energy-storage module in the embodiment of the present invention also has active power factor correct functioning so that native system, without the need to increasing extra reactive-load compensation equipment and active filter apparatus, reduces Financial cost.
Preferably, native system also comprises high-tension switch cabinet 6, low-tension switch cabinet 7. High pressure list bus L1 is positioned at high-tension switch cabinet 6, and low pressure list bus L2 is positioned at low-tension switch cabinet 7. From Fig. 5 .1, high-tension switch cabinet 6 also comprises high pressure input circuit 601, first high pressure feedline circuit 602, the 2nd high pressure feedline circuit 603. One end of high pressure input circuit 601 is connected with electrical network inlet wire cable, and the other end is connected with high pressure list bus L1; One end of first high pressure feedline circuit 602 is connected with high pressure list bus L1, and the other end is connected with the high-tension side of the first transformer; One end of 2nd high pressure feedline circuit 603 is connected with high pressure list bus L1, and the other end is connected with the high-tension side of the 2nd transformer. Low-tension switch cabinet 7 also comprises first, second low pressure input circuit, low pressure feedline circuit; One end of first, second low pressure input circuit is corresponding with the low-tension side of first, second transformer to be connected, and the other end is connected with low pressure list bus L2; One end of low pressure feedline circuit is connected with low pressure list bus L2, and the other end is connected with charging module 2, energy-storage module 3. Preferably, high-tension switch cabinet 6 is air isolation loading switch cabinet, and low-tension switch cabinet 7 is metal enclosed draw out switchgear cabinet.
Below in conjunction with Fig. 5 .1, Fig. 5 .2, Fig. 6, the internal electric connection of the high-tension switch cabinet 6 in the embodiment of the present invention, low-tension switch cabinet 7 is described in detail. Fig. 5 .1 gives the internal electric connection diagram of terminal type high-tension switch cabinet. From Fig. 5 .1, high pressure input circuit 601 comprises: the first on-load switch, the first current transformer, the first thunder arrester, the first electrification display. Wherein, the first end of the first on-load switch is connected with the high pressure list bus L1 in high-tension switch cabinet 6 cabinet, and the 2nd end is connected with one end of the first current transformer, and the 3rd end is connected to the ground; The other end of the first current transformer is connected with the first thunder arrester, the first electrification display, electrical network inlet wire cable. First high pressure feedline circuit 602, the 2nd high pressure feedline circuit 603 include: the 2nd on-load switch, grounding switch, the first fusible cut-out, the 2nd current transformer, the 2nd thunder arrester, the 2nd electrification display. Wherein, the first end of the 2nd on-load switch is connected with the high pressure list bus L1 in high-voltage switch cabinet, and the 2nd end is connected with one end of the first fusible cut-out, the 3rd end ground connection; The other end of the first fusible cut-out is connected with one end of grounding switch, the 2nd current transformer; The other end of the 2nd current transformer and the 2nd thunder arrester, the 2nd electrification display, first or the 2nd the high-tension side tie cable of transformer be connected. In the invention process, by arranging fusible cut-out in high pressure feedline circuit, it is possible to available protecting transformer.
Fig. 5 .2 gives the internal electric connection diagram of looped network type high-tension switch cabinet. Compared with Fig. 5 .1, looped network type high-tension switch cabinet also comprises third high pressure feedline circuit 604. Wherein, third high pressure feedline circuit 604 and the first high pressure feedline circuit, the 2nd high pressure feedline circuit have identical structure.
Fig. 6 gives the internal electric connection diagram of low-tension switch cabinet. As seen from Figure 6, in low-tension switch cabinet 7, low pressure feedline circuit comprises first to fourth low pressure feedline circuit. Concrete, first, second low pressure input circuit includes: the first isolating switch, the 3rd current transformer, Surge Protector, the 2nd fusible cut-out; One end of first isolating switch with first or the 2nd step down side be connected, the other end is connected with the 3rd current transformer; The other end of the 3rd current transformer is connected respectively with one end, the low pressure list bus L2 of the 2nd fusible cut-out; The other end of the 2nd fusible cut-out is connected with Surge Protector. First to fourth low pressure feedline circuit includes multiple feeder line branch road; Described feeder line branch road comprises: the 2nd isolating switch, the 4th current transformer; One end of 2nd isolating switch is connected with the low pressure list bus L2 in cabinet, and the other end is connected with one end of the 4th current transformer; The other end of the 4th current transformer is feeder line output terminal, and described feeder line output terminal can be connected with low-tension distribution box or bi-directional inverter. Preferably, the first isolating switch is frame-type circuit breaker, and the 2nd isolating switch is mold cased circuit breaker; The 3rd isolating switch also it is in series with between current transformer and bi-directional inverter the 4th; 3rd isolating switch is mold cased circuit breaker. In the embodiment of the present invention, by arranging frame-type circuit breaker in input circuit, short circuit instantaneous, short circuit short time-delay, long time delay three section protection can not only be realized, and protection can be grounded; By arranging mold cased circuit breaker in feedline circuit, and secondary contact and warning switch are set, it is possible to realize low-tension side short circuit and overload protection.
Although with reference to illustrative embodiments, invention has been described, it is to be understood that, the embodiment that the present invention is not limited in literary composition to describe in detail and illustrate, when not deviateing claim book limited range, described illustrative embodiments can be made various change by those skilled in the art.

Claims (10)

1. an intelligent energy storage and power distribution system, it is characterised in that, described system comprises: voltage reduction module, charging module, data acquisition module, monitoring module, energy-storage module;
Described voltage reduction module comprises first and second transformer; First and second transformer is all connected with high pressure list bus, low pressure list bus, for electrical network high pressure is changed into low pressure;
Described charging module is connected with low pressure list bus, for providing charging voltage for charging equipment;
Described data acquisition module is for gathering the electricity price of electrical network, the information on load of charging module, and send is to described monitoring module;
Described monitoring module sends energy storage or release and can indicate according to the electricity price of described electrical network, the information on load of charging module to described energy-storage module;
Described energy-storage module is connected with described low pressure list bus, described monitoring module, carries out energy storage for the energy storage instruction sent according to described monitoring module, or releases to indicate carry out releasing energy according to what described monitoring module sent.
2. the system as claimed in claim 1, it is characterised in that, the load P being paddy valency and charging module when electrical network electricity price is less than the first load threshold value P1Time, described monitoring module sends energy storage instruction to described energy-storage module; The load P being paddy valency and charging module when electrical network electricity price is greater than the first load threshold value P1Time, described monitoring module sends to described energy-storage module and releases and can indicate;
When the electricity price of electrical network is electrical network peak valency, described monitoring module sends to described energy-storage module and releases and can indicate.
3. system as claimed in claim 2, it is characterised in that, described data acquisition module is also for gathering the total load value P of the original electrical equipment of electrical network2, and send it to described monitoring module;
Described monitoring module is according to the total load value P of the original electrical equipment of electrical network received2, it is determined that the first load threshold value P1,
P1=P0-P2;
Wherein, P0For the maximum load value that can carry during electric power netting safe running.
4. system as claimed in claim 3, it is characterised in that, described energy-storage module comprises micro-processing unit, N number of energy-storage units, secondary battery state managing unit; Each energy-storage units comprises 1 bi-directional inverter, 1 secondary battery;
The energy storage instruction that described micro-processing unit sends according to described monitoring module and the battery status information that secondary battery state managing unit sends, send charging instruction to N number of bi-directional inverter; The battery status information that described micro-processing unit can indicate according to releasing of sending of described monitoring module and secondary battery state managing unit sends, sends electric discharge instruction to N number of bi-directional inverter;
Secondary battery is carried out charge or discharge according to the charge or discharge instruction received by described bi-directional inverter;
Described secondary battery state managing unit is for monitoring the battery status information of N number of secondary battery, and described battery status information is sent to described micro-processing unit;
Wherein, N be more than or equal to 1 integer.
5. system as claimed in claim 4, it is characterised in that, described system also comprises high-tension switch cabinet, low-tension switch cabinet;
Described high pressure list bus is positioned at described high-tension switch cabinet, and described low pressure list bus is positioned at described low-tension switch cabinet;
Described high-tension switch cabinet also comprises high pressure input circuit, first, second high pressure feedline circuit; One end of described high pressure input circuit is connected with electrical network inlet wire cable, and the other end is connected with high pressure list bus; One end of first, second high pressure feedline circuit is connected with high pressure list bus, and the other end is connected with the high-tension side of first and second transformer;
Described low-tension switch cabinet also comprises first, second low pressure input circuit, low pressure feedline circuit; One end of first, second low pressure input circuit is corresponding with the low-tension side of first, second transformer to be connected, and the other end is connected with low pressure list bus; One end of low pressure feedline circuit is connected with low pressure list bus, and the other end is connected with described charging module, described energy-storage module.
6. system as claimed in claim 5, it is characterised in that, described charging module comprises low-tension distribution box, charging pile;
Described low-tension distribution box comprises: the miniature circuit breaker of breaker of plastic casing, multiple parallel connection; Wherein, one end of described breaker of plastic casing is connected with one end of described miniature circuit breaker, and the other end is connected with the low pressure feedline circuit in described low voltage switchgear by cable; The other end of described miniature circuit breaker is connected with described charging pile.
7. system as claimed in claim 6, it is characterised in that, first and second transformer is Covered transformer, and described high-tension switch cabinet is air isolation loading switch cabinet, and described low-tension switch cabinet is metal enclosed draw out switchgear cabinet.
8. system as claimed in claim 5, it is characterised in that, in described high-tension switch cabinet, described high pressure input circuit comprises: the first on-load switch, the first current transformer, the first thunder arrester, the first electrification display; Wherein, the first end of the first on-load switch is connected with high pressure list bus, and the 2nd end is connected with one end of the first current transformer, and the 3rd end is connected to the ground; The other end of the first current transformer is connected with the first thunder arrester, the first electrification display, electrical network inlet wire cable;
First, second high pressure feedline circuit includes: the 2nd on-load switch, grounding switch, the first fusible cut-out, the 2nd current transformer, the 2nd thunder arrester, the 2nd electrification display; Wherein, the first end of the 2nd on-load switch is connected with high pressure list bus, and the 2nd end is connected with one end of the first fusible cut-out, the 3rd end ground connection; The other end of the first fusible cut-out is connected with one end of grounding switch, the 2nd current transformer; The other end of the 2nd current transformer and the 2nd thunder arrester, the 2nd electrification display, first or the 2nd the high-tension side tie cable of transformer be connected.
9. system as claimed in claim 5, it is characterised in that, in described low-tension switch cabinet, first, second low pressure input circuit includes: the first isolating switch, the 3rd current transformer, Surge Protector, the 2nd fusible cut-out; One end of first isolating switch with first or the 2nd the low-tension side of transformer be connected, the other end is connected with the 3rd current transformer; The other end of the 3rd current transformer is connected respectively with one end, the low-voltage bus bar of the 2nd fusible cut-out; The other end of the 2nd fusible cut-out is connected with Surge Protector;
Low pressure feedline circuit comprises first to fourth low pressure feedline circuit; First to fourth low pressure feedline circuit includes multiple feeder line branch road; Described feeder line branch road comprises: the 2nd isolating switch, the 4th current transformer; One end of 2nd isolating switch is connected with low pressure list bus, and the other end is connected with one end of the 4th current transformer; The other end of the 4th current transformer is feeder line output terminal, and described feeder line output terminal is connected with charging module, energy-storage module.
10. the system as claimed in claim 1, it is characterised in that, described system also comprises metering and billing module;
Described metering and billing module is connected with charging module, for obtaining power consumption and the electricity cost of charging module in real time.
CN201610160882.7A 2016-03-21 2016-03-21 Intelligent energy storage and power distribution system Pending CN105656050A (en)

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Application publication date: 20160608