The communication and connection skills of the independent power supply system create better prospects for the power supply of the future. Hundreds of systems around the world have installed SMA's Sunny Island battery inverters to supply power to customers for a long time. The stackability of Sunny Island, that is, multiple Sunny Islands are connected to add power output, and users can adjust or expand the capacity according to the power needs of different systems.
Why use a communication bus? The ability to scale up simply and economically is the key point for all stand-alone power supply systems and any other power supply system that is far from the public grid. Of course, the connection between different devices and systems is also important. Sunny Island is a communication bus parallel system, which can connect various types of power generation equipment or loads to the same bus system. In this way, no matter whether the load is added or the power generation equipment is added, the system can be expanded at will.
Sunny Island operating principle: Sunny Island is connected with the battery pack, and the voltage and frequency of the communication terminal are controlled to form a communication power grid. All equipment in the off-grid system, including loads or power sources (e.g. Sunny Boy PV inverters), is connected to this communication bus. During periods of high power generation (e.g. when the daylight radiation is strong or the load consumes less), Sunny Island is able to charge the remaining power from the bus into the battery. During periods of high power consumption (e.g. at night or when the load consumes a lot of power), Sunny Island is able to invert the direct current stored in the battery into communication and feed it into the communication bus.
Flexibility: Virtually all generator sets can be connected to the Sunny Island stand-alone power supply system, including photovoltaic power generation systems with Sunny Boy inverters, wind turbines, hydroelectric generators and diesel generators with SMA Windy Boy inverters (which can be actively started when the battery pack capacity is low). Since the Sunny Island 4500 and 5048 can be operated in parallel, the independent power supply system composed of these devices can be gradually expanded into a large power plant system as needed. In order to ensure the safety of the system of large-scale power plants, Sunny Island can be installed in the main string format. Up to four devices, including the battery, can form a single unit. In order to ensure that the output data is at a specified level, several of these units can be operated in parallel. The advantage of this is that if a battery fails, it will not affect the overall operation of the system.
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Introduction to busbars in Wiener's electrical system
The bus bar is an intermediate link in the voltage distribution device at all levels, and its role is to gather, distribute and transmit electric energy. It is mainly used for the connection of the electrical main circuit between the power plant generator outlet line and the main transformer, the plant transformer and the distribution box, also known as the busbar.
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Introduction to the classification of busway - Wiener
According to the different uses of the bus duct, the bus groove is generally composed of the start bus slot, the straight bus slot (no partition jack and jack), the L-shaped straight (horizontal) curve bus, the Z-type straight (horizontal) offset bus, the T-shaped straight (horizontal) tee bus, the X-type straight (horizontal) cross-way bus, the variable ...
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Detailed explanation of Wiener DC bus
1. Three-phase AC power supply inlet
The power input of each inverter is connected in parallel on the same AC bus, and the power phase of the input end of each inverter is ensured. The circuit breaker QF is the incoming line protection device for each inverter. LR is an incoming reactor, when multiple inverters are operating in the same environment.
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Distribution cabinet bus connection method - Wiener
When users use the distribution cabinet, they must understand the circuit device of the busbar, and many users are not very well understood, so let's talk about the bus connection mode of the distribution cabinet.
The bus bar is used for the internal and external electrical appliances of the distribution cabinet.
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Introduction to the advantages of busway - Wiener
The advantage of the busway is that its structural design is simple, it is composed of metal plates, which can connect the circuits together, so as to achieve the safe and reliable transmission of electric energy. In addition, its structural design can effectively assist in reducing the occurrence of short circuits, reducing heat loss, and can effectively ensure the power ...
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What are the modules of the Wiener bus system?
The modulus of the bus system is 40mm, 60ram, 100/185mm; The bus cross-section is rectangular, double "T" (i.e., "H" shape) and three "T" (i.e., 'state') shapes; The bus system can be three-wire, four-wire or five-wire, or even seven-wire, of course, it should be determined according to the needs ...
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The application of Wiener bus system wiring technology in box transformer
The bus system is to directly connect the components to the bus, the bus does not need to be perforated, at this time, the bus is not only the conductor of the component, but also the support of the component, the current can reach 2500A, so that the box transformer function has the following progress:
1 ...
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NH-Fuse Type Disconnector Instructions for Use
When switching on and off components, you should pay attention to the following:
–In accordance with VDE-0105-100, only operation by electrical professionals or persons with electrical knowledge is allowed (operation without electricity, closing, disconnecting, and replacing fuses ...).
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Low-voltage cabinet for capacitance compensation – Wienal
Capacitor compensation is indispensable in low-voltage cabinets, so what is the effect of capacitor compensation. The meaning of this is that it acts as a capacitor. Let's take a look at the principle of capacitor compensation first, when the capacitor is compensated, the capacitor and the load are connected in parallel, and the capacitor is like a bin. When the load increases, the power supply has internal resistance, so that ...
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The difference between busway and busbar - Vernal
The busway and busbar are actually closed one after the other, and the other is not closed.
Closing the busbar is referred to as the busway, which means that the busway is the vest that closes the busbar, and the closing busway and the busbar refer to the same thing.
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Fuse selection method - Wiener busbar
1. Select the model of the fuse according to the circuit requirements and device conditions. Circuits with small capacity are semi-enclosed or enclosed without fillers; The selection of large short-circuit current has a packing closed type; Semiconductor component maintenance selection of quick fuses.
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Advantages and disadvantages of bus full differential protection
Thorough differential maintenance of the bus is to connect the current transformer of all the connecting elements on the bus to the differential circuit according to the same name phase and polarity, the characteristics and transformation ratio of the current transformer should be the same, if the transformation ratio can not be together, the compensation converter can be used to compensate, satisfactory ΣI=0.
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Dense busway with high insulation – Wienal
The dense busway is made of structure, with high mechanical strength, good sealing, fast heat generation, good shielding function and anti-chimney effect.
The conductor is constructed to overcome edge discharge and acute angle damage to the insulation.
Insulation selection extrusion ...
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Closed busway essentials – Wiener
Before the closed busway device, it should be ensured that the electrical shaft, the transformer and distribution room, the decoration project of the place through which the busway passes, and the heating and ventilation project are all completed to ensure that the closed busway is not polluted. The reserved holes and embedded parts of the floor and wall should be embedded and reserved according to the position required by the design.
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Wiener looks at the busway drawing method
First, in the CAD system drawing, it is a plan of the bus duct, and two parallel polylines can indicate the bus duct.
2. The busway includes the following parts:
1. Feeder busbar, which is used to transmit electricity
2. Plug-in busbar with plug-in interface above, ...
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A new product has been added to the world of CrossBoard® systems
A new addition to the world of CrossBoard® systems: the MOTUS® hybrid motor starter with IO-Link interface is a new networking feature in the MOTUS® IO-Link family that enables continuous communication between the control and device levels. Control the delivery of instructions, control the parameters ...
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Busbar system reverse operation – Wiener
(1) For the charging of the spare bus, when there is a bus tie circuit breaker, the bus tie circuit breaker should be used to charge the spare bus. At this time, the maintenance device of the bus tie circuit breaker should be fully invested, and the relevant maintenance value and time limit should be changed to a small size, so that when there is a problem with the bus, the bus tie circuit breaker can be quickly tripped, cut off...
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Wiener busbar system PT disconnection treatment
The judgment of PT three-phase voltage loss (symmetrical disconnection) is fundamentally the same for each manufacturer, and it is judged according to the three-phase no voltage and the current of the line. The same is true for PT asymmetrical wire breakage. After analyzing the characteristics of PT wire breaking, the specific judgment of PT asymmetric wire breaking of different manufacturers ...
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The difference between metal busbar and closed busbar - EVOC
The nature is different
Busbar: It is a common path on which multiple devices are connected in the form of side-by-side branches.
Busway: It is a closed metal equipment composed of copper and aluminum busbars.
Different uses
Mother...
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Advantages of Wiener aluminum busway
1. Reliable insulation method
There is an insulating layer on the conductive row, and there is a certain air yard between the phase and the phase, and there is an insulating pad block limited by DMC data between the conductive row and the shell, triple insulation, to ensure that the insulation of the bus duct is full of certainty, especially in the humid environment.
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