CN222654871U - A three-electricity control distribution system - Google Patents
A three-electricity control distribution system Download PDFInfo
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- CN222654871U CN222654871U CN202421318766.XU CN202421318766U CN222654871U CN 222654871 U CN222654871 U CN 222654871U CN 202421318766 U CN202421318766 U CN 202421318766U CN 222654871 U CN222654871 U CN 222654871U
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- 238000009826 distribution Methods 0.000 title claims abstract description 55
- 238000004146 energy storage Methods 0.000 claims abstract description 70
- 238000012546 transfer Methods 0.000 claims description 23
- 238000004891 communication Methods 0.000 claims description 16
- 230000001012 protector Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 abstract description 26
- 230000009977 dual effect Effects 0.000 abstract description 17
- 230000005611 electricity Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
本实用新型提供的一种三电控制配电系统包括第一双电源切换单元、第二双电源切换单元及其出线单元。在风光发电储能电源正常情况下，风光发电储能电源作为常规用电，市电电源和应急电源作为备用电；在风光发电储能电源不能提供负载所需的电能情况下，通过第一双电源切换单元、第二双电源切换单元由市电电源提供负载电源；进一步若市电电源无法提供电源的情况下，通过第二双电源切换单元由应急电源提供负载电源。本发明提供三电控制配电系统不仅大大地提高基于风光发电储能电源为主的负载端的配电系统供电可靠性，又能充分利用风光发电储能的经济性。
The utility model provides a three-electricity control distribution system including a first dual power switching unit, a second dual power switching unit and an output unit thereof. When the wind and solar power generation and energy storage power supplies are normal, the wind and solar power generation and energy storage power supplies are used as conventional electricity, and the mains power supply and the emergency power supply are used as backup electricity; when the wind and solar power generation and energy storage power supplies cannot provide the electric energy required by the load, the mains power supply provides the load power supply through the first dual power switching unit and the second dual power switching unit; further, if the mains power supply cannot provide power, the emergency power supply provides the load power supply through the second dual power switching unit. The three-electricity control distribution system provided by the present invention not only greatly improves the power supply reliability of the distribution system at the load end based on wind and solar power generation and energy storage power supplies, but also can make full use of the economy of wind and solar power generation and energy storage.
Description
Technical Field
The utility model belongs to the technical field of power distribution, relates to a three-electric control power distribution system, and in particular relates to a three-electric control power distribution system based on a wind-light power generation energy storage power supply, a mains supply and an emergency power supply.
Background
With the great development of new energy power generation industries mainly including wind power generation and photovoltaic power generation, the method not only drives economic growth and promotes energy transformation, but also plays a great role in reducing greenhouse gas emission and reducing atmospheric pollution and dyeing while providing clean power, but also has the characteristics of randomness, volatility and the like, and has influence on the safe and stable operation of an original power system, and the economical efficiency of the operation of the power system is obviously influenced.
In order to cope with wind power generation, photovoltaic power generation randomness and volatility, although an energy storage system mainly comprising lithium batteries is built at the power utilization end (namely, the load end), the lithium batteries are easy to generate fire, and are difficult to extinguish and control when the fire is generated, particularly, the inverter is generally used for about 10 years in service life, and when the inverter fails, the load end is switched to a mains supply power supply with low reliability, and if important loads which cannot be powered off exist in the load end, such as a data center, a fish tank, a wine cellar and the like, the reliability of power supply to a power distribution system based on the load end mainly comprising wind-light power generation energy storage power supply is greatly reduced.
Disclosure of Invention
In order to solve the problems, the utility model provides a three-electric control power distribution system based on a wind-light power generation energy storage power supply, a mains supply and an emergency power supply, which can not only provide reliable power supply for a load end, but also fully utilize the economy of wind-light power generation energy storage.
In order to achieve the above purpose, the utility model provides a three-electric control power distribution system, which comprises a first dual-power switching unit, a second dual-power switching unit and an outlet unit thereof; the first dual power supply switching unit comprises a first dual power supply inlet circuit, a first dual power supply change-over switch and a first wire outlet thereof, the first dual power supply inlet circuit is a photovoltaic energy storage power supply inlet circuit and a mains supply inlet circuit respectively, the photovoltaic energy storage power supply inlet circuit comprises a photovoltaic energy storage power supply, a photovoltaic energy storage power supply circuit breaker and a photovoltaic energy storage power supply inlet connection circuit thereof, the mains supply inlet circuit comprises a mains supply, a mains supply circuit breaker and a mains supply inlet connection circuit thereof, the second dual power supply switching unit comprises a second dual power supply inlet circuit, a second dual power supply change-over switch and a second wire outlet thereof, the second dual power supply inlet circuit is a second wire inlet circuit and an emergency power supply inlet circuit respectively, the second wire inlet circuit is a second wire inlet connection circuit directly connected with the first wire outlet, the emergency power supply inlet circuit comprises an emergency power supply, an emergency power supply circuit breaker and an emergency power supply inlet connection circuit thereof, the wire outlet circuit comprises an outlet circuit and an outlet circuit connected with the emergency power supply circuit breaker, the outlet circuit comprises an outlet circuit, the outlet circuit is sequentially connected with an electric meter and an outlet circuit breaker, the UPS circuit comprises an outlet circuit, the UPS circuit is connected with a plurality of power distribution units in parallel connection with a power supply, the UPS circuit is connected with a power supply distribution unit, and a power supply management unit is connected with a load, the three-electricity control power distribution system is a low-voltage power distribution system.
Preferably, the first dual-power transfer switch and the second dual-power transfer switch are ATS automatic transfer switches or STS static transfer switches.
Preferably, the photovoltaic energy storage power circuit breaker or/and the mains power circuit breaker or/and the emergency power circuit breaker is/are automatic reclosing circuit breaker.
Preferably, the low voltage power distribution system is an AC220V or AC380V voltage class power distribution system.
Preferably, the outgoing line and outgoing line loop further comprises a surge protection unit, wherein the surge protection unit comprises a surge protection circuit breaker and a surge protector, and the surge protector is in grounding connection with the three-electric control power distribution system.
Preferably, the UPS power source unit further includes a 4G display screen, and the 4G display screen and the communication control manager are connected in parallel to an output end of the switching power source.
Preferably, the photovoltaic energy storage power supply is replaced by a wind power generation energy storage power supply or a wind-light power generation energy storage power supply.
Preferably, the emergency power supply is a generator set or a UPS uninterruptible power supply B or an EPS emergency power supply or another mains power supply independent of the mains power supply in the three-electric control power distribution system.
The utility model provides a three-electric control power distribution system which comprises a first double-power switching unit, a second double-power switching unit and an outlet unit thereof. Under the normal condition of the wind-light power generation energy storage power supply, the wind-light power generation energy storage power supply is used as conventional power consumption, and the mains supply and the emergency power supply are used as standby power. Under the condition that wind-light power generation energy storage power supply can not provide electric energy required by a load, the first dual-power switching unit and the second dual-power switching unit are used for providing the load power supply by the commercial power supply, under the condition that wind-light power generation energy storage power supply can not provide electric energy required by the load, and under the condition that the commercial power supply can not provide the power supply at the same time, the second dual-power switching unit is used for providing the load power supply by the emergency power supply, and when the three-electric control power distribution system detects that the wind-light power generation energy storage power supply or the commercial power supply is normal, the emergency power supply is stopped, the first dual-power switching unit is automatically switched to the photovoltaic energy storage power supply or the commercial power supply, and the second dual-power switching unit is automatically switched to the second incoming line loop load power supply. Therefore, the three-electric control power distribution system provided by the utility model not only greatly improves the power supply reliability of the power distribution system based on the load end mainly of the wind-light power generation energy storage power supply, but also can fully utilize the economy of wind-light power generation energy storage.
Drawings
Fig. 1 is a schematic diagram of the structural principle of a three-electric control power distribution system provided by the utility model;
FIG. 2 is a schematic diagram of the electrical wiring principle of the three-electric control power distribution system shown in FIG. 1;
fig. 3 is a schematic diagram of a secondary electrical connection principle of the UPS power source unit shown in fig. 1.
Detailed Description
The following describes a three-electric control power distribution system taking an AC220V voltage class low-voltage power distribution system as an example in detail by referring to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the three-electric control power distribution system includes a first dual power switching unit, a second dual power switching unit, and an outlet unit thereof; the first dual-power switching unit comprises a first dual-power inlet circuit, a first dual-power change-over switch S4 and a first wire outlet thereof, the first dual-power inlet circuit is a photovoltaic energy storage power inlet circuit and a mains supply inlet circuit respectively, the photovoltaic energy storage power inlet circuit comprises a photovoltaic energy storage power supply, an automatic reclosing circuit breaker S1 and a photovoltaic energy storage power inlet connection circuit thereof, and the mains supply inlet circuit comprises a mains supply, an automatic reclosing circuit breaker S2 and a mains supply inlet connection circuit thereof; the second dual-power supply switching unit comprises a second dual-power supply inlet circuit, a second dual-power supply change-over switch S5 and a second outlet terminal thereof, the second dual-power supply inlet circuit is respectively a second inlet circuit and an emergency power supply inlet circuit, the second inlet circuit is a second inlet connection circuit directly connected with the first outlet terminal, the emergency power supply inlet circuit comprises an emergency power supply (generator set power supply), an automatic reclosing circuit breaker S3 and an emergency power supply inlet connection circuit thereof, the outlet unit comprises an outlet wire inlet circuit and an outlet wire outlet circuit connected with the outlet wire inlet circuit, the outlet wire inlet circuit comprises an electric meter PW1 and an outlet wire inlet connection circuit of an outlet wire circuit S6 which are sequentially connected with the second outlet wire terminal, the outlet wire outlet circuit comprises a UPS power supply unit, a plurality of load units and a surge protection unit which are respectively distributed in parallel, the UPS power supply unit comprises a UPS inlet circuit breaker S7, a UPS uninterrupted power supply A S, switch power supplies V1 and 4G display screens and a communication control manager S12, the 4G display screen S11 and the communication control manager S12 are connected in parallel to the output end of the switching power supply V1, the load unit comprises a load breaker S8 and a load, and the surge protection unit comprises a surge protection breaker S9 and a surge protector SK1.
The automatic reclosing circuit breaker (S1/S2/S3) detects and judges the voltage of the power supply side, automatically delays to open when the voltage of the power supply side is over-voltage, under-voltage or under-voltage, and automatically closes when the voltage of the power supply side is recovered to be normal. Meanwhile, the photovoltaic grid-connected circuit breaker has the functions of short-circuit protection, overload protection and isolation for an outgoing line of the photovoltaic grid-connected circuit breaker, such as CDBNE125,125, 125GQF series photovoltaic grid-connected circuit breaker.
The first and second dual-power transfer switches are ATS (Automatic TRANSFER SWITCHING equivalent) Automatic transfer switches, such as YRQ PC-125 type Automatic transfer switch. When the ATS automatic transfer switch works, the internal controller of the ATS automatic transfer switch continuously samples various voltage and current of the dual power supply in real time, calculates various effective voltage and current values, makes corresponding judgment processing according to preset voltage and current values, and sends an opening or closing instruction to an operating mechanism through a sequential driving circuit to realize switching between the dual power supplies of the ATS automatic transfer switch.
As shown in fig. 3, the communication control manager S12 is a relay control device adopting a standard Modbos-RTU protocol, and supports RS485/232 or network communication. The power supply device supports wide voltage power supply, has a multipath input and output control unit, and can be widely applied to various application scenes such as industrial production, agriculture, smart cities, office buildings and the like, for example, LH-10808,8DO+8DI isolation RS485+RS232.
The 4G display screen S11 is in communication connection with the communication control manager S12 through an RS485/232 interface and is used for displaying real-time power supply voltage, current, electricity consumption, IO states of various components of the three-electric control distribution system, switching of power supply by a double-power-supply change-over switch or fault occurrence, alarming names and fault phenomenon description, and the mobile phone APP synchronously receives and displays the signals through the 4G display screen, such as McgsTpc N series embedded integrated touch screens.
The intermediate relay KA1 is a relay with coil voltage of AC220V, the coil of the relay takes electricity from the inlet wire of the photovoltaic energy storage power supply, the photovoltaic energy storage power supply is powered, the KA1 coil is powered, the normally open contact of the relay is closed, and the communication control manager judges whether the energy storage is powered or not through DI input feedback of S12;
the intermediate relay KA2 is a relay with coil voltage of AC220V, the coil of the relay takes power from the incoming line of the mains supply, the mains supply is powered, the KA2 coil is powered, the normally open contact of the relay is closed, and the communication control manager judges whether the mains supply has power or not through DI input feedback of S12;
The intermediate relay KA3 is a relay with coil voltage of AC220V, the coil of the relay takes electricity from an emergency power supply inlet wire, the emergency power supply starts to generate electricity, the KA3 coil is powered, a normally open contact of the relay is closed, and the communication control manager judges whether the generator has electricity or not through DI input feedback of S12;
the intermediate relay KA8 is a relay with a coil voltage of DC24V, and when the communication control manager determines that the commercial power supply and the photovoltaic energy storage power supply are not powered by feedback signals of KA1 and KA2, the relay KA8 is controlled to power the coil, and a starting signal is sent to an emergency power supply (such as a generator set power supply) through a normally open contact of KA 8;
The intermediate relay KA9 is a relay with a coil voltage of DC24V, and when the communication control manager determines that one of the mains supply or the photovoltaic energy storage power supply is powered through feedback signals of KA1 and KA2, or both the mains supply and the photovoltaic energy storage power supply are powered, the relay KA9 is controlled to power the coil, and a stop signal is sent to an emergency power supply (such as a generator set power supply) through a normally open contact of KA 9.
The UPS uninterrupted power supply A comprises a rectifier, a storage battery, an inverter and a static switch, and is used for providing uninterrupted power supply for the communication control manager S12 and the 4G display screen S11 through the switch power supply V1. When the system output power is normal, the UPS uninterrupted power supply A stabilizes the system output power and supplies the system output power to the communication control management machine S12 and the 4G display screen S11 for use, at the moment, the UPS uninterrupted power supply A charges a storage battery of the system output power relative to an alternating current voltage stabilizer, when the system output power is interrupted (accident power failure), the UPS uninterrupted power supply A continuously supplies the power of the storage battery to the communication control management machine S12 and the 4G display screen S11 through an inverter to maintain normal work and protect the load software and hardware of the system output power from damage, and the UPS uninterrupted power supply A also generally has the function of providing protection for overlarge voltage and low voltage.
And the outlet loop is provided with a surge protection unit, wherein the surge protector is grounded and connected with the three-electric control distribution system and is used for protecting load electrical equipment from high transient overvoltage.
The working principle is as follows:
1) Under normal conditions (i.e., the photovoltaic energy storage power supply operates normally and the output power of the photovoltaic energy storage power supply can meet the requirement of a load, for example, the equipment in the photovoltaic energy storage power supply operates normally and the output power of the equipment can meet the requirement of the load), the photovoltaic energy storage power supply is used as conventional power consumption, and the mains supply and the emergency power supply are used as standby power;
2) When the photovoltaic energy storage power supply cannot provide the electric energy required by the load (namely, the fault of the photovoltaic energy storage power supply or the electric energy output by the photovoltaic energy storage power supply cannot meet the requirement of the load, such as abnormal operation of equipment in the photovoltaic energy storage power supply, such as the fault of an inverter, or the output of the equipment does not meet the requirement of the load), the three-electric control distribution system automatically switches to the mains supply through the first double-power transfer switch S4 and continues to provide the load power supply through the second inlet wire loop by the second double-power transfer switch S5;
3) When the photovoltaic energy storage power supply cannot provide the electric energy required by the load (i.e. the photovoltaic energy storage power supply fails or the electric energy output by the photovoltaic energy storage power supply cannot meet the requirement of the load, for example, the equipment in the photovoltaic energy storage power supply operates abnormally, for example, the inverter fails, or the output of the photovoltaic energy storage power supply cannot meet the requirement of the load), and meanwhile, the three-electric control distribution system automatically switches to the emergency power supply to provide the load power through the second double-power-supply change-over switch S5, and meanwhile, the automatic reclosing circuit breaker S1 and the automatic reclosing circuit breaker S2 are interlocked, and any one of the circuit breakers is not allowed to close. When the three-electric control distribution system detects that the photovoltaic energy storage power supply or the commercial power supply is normal, the interlocking of the automatic reclosing circuit breaker S1 or the automatic reclosing circuit breaker S2 is released, the emergency power supply is stopped, the first double-power transfer switch S4 is automatically switched to the photovoltaic energy storage power supply or the commercial power supply, and the second double-power transfer switch S5 is switched to the second incoming line loop load for power supply.
The first and second dual-power transfer switches described in the present invention may also be STS (Static Transfer Switch) static transfer switches.
The emergency power supply is a generator set or a UPS uninterruptible power supply B or an EPS emergency power supply or another mains power supply independent of the mains power supply in the three-electric control power distribution system.
The automatic reclosing circuit breakers S1, S2 and S3 can be conventional circuit breakers without automatic reclosing function, so that the reliability of load power supply of the three-electric control power distribution system can be reduced.
The three-electric control distribution system can also be used for AC380V and other low-voltage level systems, and corresponding automatic reclosing circuit breakers, double-power transfer switches and outgoing line and incoming line circuit breakers can be selected as equipment with corresponding voltage levels.
The photovoltaic energy storage power supply can also be a wind power generation energy storage power supply, a wind-light generation energy storage power supply and other new energy generation energy storage power supplies.
The utility model is characterized in that a first double-power switching unit, a second double-power switching unit and an outlet unit thereof are adopted for a power distribution system based on a load end of a wind-light power generation energy storage power supply, and the power distribution system is powered by a mains supply and an emergency power supply respectively under the condition that the wind-light power generation energy storage power supply cannot provide electric energy required by the load, and the protection scope of the utility model is described in the claims.
Claims (10)
1. A three-electric control distribution system is characterized by comprising a first double-power switching unit, a second double-power switching unit and an outgoing line unit, wherein the first double-power switching unit comprises a first double-power incoming line loop, a first double-power change-over switch and a first incoming line loop thereof, the first double-power incoming line loop is a photovoltaic energy storage power incoming line loop and a mains supply incoming line loop respectively, the photovoltaic energy storage power incoming line loop comprises a photovoltaic energy storage power source, a photovoltaic energy storage power circuit breaker and a photovoltaic energy storage power incoming line connecting line thereof, the mains supply incoming line loop comprises a mains supply, a mains supply circuit breaker and a mains supply incoming line connecting line thereof, the second double-power switching unit comprises a second double-power incoming line loop, a second double-power change-over switch and a second outgoing line thereof, the second double-power incoming line loop is a second incoming line loop and an emergency power incoming line loop, the emergency power incoming loop is a second incoming line connecting line directly connected with a first outgoing line end, the emergency power incoming line loop comprises an electric meter, the emergency power circuit breaker and an emergency power incoming line connecting line breaker thereof, the outgoing line loop comprises an outgoing line, the outgoing line unit comprises an outgoing line loop and an outgoing line distributor, the UPS and an outgoing line unit comprises an outgoing line distributor, the UPS and the UPS is connected with an outgoing line in turn-off control unit in turn-on a load, the three-electricity control power distribution system is a low-voltage power distribution system.
2. The three-electric control power distribution system of claim 1, wherein the first dual-power transfer switch and the second dual-power transfer switch are ATS automatic transfer switches or STS static transfer switches.
3. The three-electric controlled power distribution system of claim 2, wherein the photovoltaic energy storage power circuit breaker or/and the mains power circuit breaker or/and emergency power circuit breaker is a recloser circuit breaker.
4. The three-electric control power distribution system of claim 3, wherein the low voltage power distribution system is an AC220V or AC380V voltage class power distribution system.
5. The three-electric controlled power distribution system of claim 1 or 2 or 3 or 4, wherein the outgoing line circuit further comprises a surge protection unit comprising a surge protection circuit breaker and a surge protector, wherein the surge protector is connected to the three-electric controlled power distribution system ground.
6. The three-electric control power distribution system according to claim 5, wherein the UPS power source unit further comprises a 4G display screen, and the 4G display screen and the communication control manager are connected in parallel to an output end of the switching power source.
7. The three-electric control power distribution system according to claim 1 or 2 or 3 or 4 or 6, characterized in that the photovoltaic energy storage power source is replaced by a wind power energy storage power source or a wind power energy storage power source.
8. A three-electric controlled power distribution system according to claim 1 or 2 or 3 or 4 or 6, characterized in that the emergency power source is a generator set or UPS uninterruptible power supply B or EPS emergency power source or another mains power source independent of the mains power source in the three-electric controlled power distribution system.
9. The three-electric control power distribution system of claim 5, wherein the photovoltaic energy storage power source is replaced with a wind power energy storage power source or a wind-solar power energy storage power source.
10. A three-electric control power distribution system according to claim 5, characterized in that the emergency power source is a generator set or a UPS uninterruptible power supply B or an EPS emergency power source or another mains power source independent of the mains power source in the three-electric control power distribution system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202421318766.XU CN222654871U (en) | 2024-06-11 | 2024-06-11 | A three-electricity control distribution system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202421318766.XU CN222654871U (en) | 2024-06-11 | 2024-06-11 | A three-electricity control distribution system |
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| CN222654871U true CN222654871U (en) | 2025-03-21 |
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| CN202421318766.XU Active CN222654871U (en) | 2024-06-11 | 2024-06-11 | A three-electricity control distribution system |
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