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 sun radiates strongly or when the load consumes less), Sunny Island is able to charge the remaining power from the bus into the battery. During periods of time when there is a lot of electricity consumption (such as at night or when the load consumes a lot of electricity), Sunny Island can convert the DC stored in the battery into communication and send it into the communication bus.
Flexibility: Virtually all generator sets can be connected to the Sunny Island independent power supply system, including photovoltaic power generation system with Sunny Boy inverter, wind turbine, hydro generator and diesel generator with SMA Windy Boy inverter (which can be actively started in the case of low battery capacity**). 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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Wiener enclosed busbar installation
Closed busway is a busbar system composed of metal plates (steel plates or aluminum plates) as protective shells, conductive strips, insulating materials and related accessories. It can be made into a piercing closing bus with spaced piercing junction boxes, or a feed-in closing bus without a junction box in the middle. ...
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Technical requirements for busway system – Wiener busbar
1. The conductor of the bus bar is a high conductivity TMY electrical hard copper bar rolled by T2 electrolytic copper, and the purity of copper must be ≥ 99.95%, and copper-aluminum alloy or other mixed alloy non-pure copper conductor materials shall not be used, and the copper plate is tin plated on the full length.
2. The raw material of the neutral wire and the phase wire in the bus system is the same.
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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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Ferromagnetic resonance occurs in the busbar system – Vernal
The ferromagnetic resonance of the bus system is divided into parallel ferromagnetic resonance and series ferromagnetic resonance. Parallel ferromagnetic resonance refers to the resonance of the ground capacitance of the bus system and the nonlinear inductance of the bus electromagnetic voltage transformer (primary neutral grounding) in the neutral point ungrounded system or small current grounding system.
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Wiener busway plug-in box wiring method
The bus duct bracket has to be firmly installed, and the bus duct should be correctly placed according to the segment sequence number, phase sequence, number, direction and device mark, and when the sections are connected, the adjacent section of the bus duct should be aligned, and the conductor and shell of the bus duct should not accept mechanical stress after the connection.
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What is the role of the busbar in the distribution box
Busbar refers to a product made of copper and aluminum materials with high conductivity to transmit electrical energy and have the ability to gather and distribute electricity. The main conductor used by the power station or substation to transport electrical energy. In the power system, the busbar in the distribution box connects the various current-carrying branch circuits in the distribution unit, ...
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Dense busbar installation – Wiener
1. Requirements for civil engineering before installation
1) The foundation, structure, reserved holes and embedded parts all meet the design requirements of electrical equipment.
2) After the construction of the roof and floor slab is completed, there shall be no leakage.
3) After the indoor ground construction is completed, mark the ground leveling line on the well wall.
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Characteristics of power system bus wiring mode
(1) Single bus wiring. Single bus wiring has the advantages of simple and clear, less equipment, less investment, convenient operation and expansion, but its reliability and activity are poor. When the bus or bus divider is faulty or overhauled, it is necessary to disconnect all power to the bus.
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Precautions for installation of Wiener busway
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Temperature rise requirements and safety of Wiener busway
With the rapid development of our economy and technology, the trend of urbanization is becoming more and more popular, and people's electricity consumption is also increasing. In this case, the busway has developed significantly, and the use of instead of cable has become the development trend of the times. Therefore, what are the requirements for the temperature rise of the busway and ...
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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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The technology of the main bus bar in the low-voltage open light cabinet - Winer
One of the characteristics of the Wiener low-voltage switchgear is the multi-functional busbar system. The bus bar is a conductor that connects large electrical equipment such as generators and transformers with various electrical devices. The role of the bus bar is to transmit electric energy with the, and the bus bar is the main equipment constituting the electrical wiring. ...
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Introduction to busbars, busway, and busbridges - Wiener
generatrix
In the field of electricity, the busbar can also be called the busbar, busbar, etc., which mostly refers to the busbar or power supply trunk in the high and low voltage cabinet, which is used to connect multiple electrical lines. The system will install various interface cards through the bus, and transmit various data to the devices connected to the interface cards.
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Uses and characteristics of busbar systems – Wienal
The bus system is a system with standardized bus distance, which is used in low-voltage power supply and distribution switchgear and control equipment, so that the bus can play the effect of conducting electricity and supporting electrical components.
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Introduction to Laminated Busbar System – Wiener
In the power system, the bus connects the various current-carrying branch circuits in the power distribution device together, and plays the role of collecting, distributing and transmitting electric energy; According to the appearance and structure, the bus bar is roughly divided into three categories: hard busbar, soft busbar and closed busbar.
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Advantages of installing cable trays with busway – Wiener
When it comes to cable tray installation, wiring is not very convenient. This phenomenon can be avoided by using busway. The 5 advantages of using busway in the cable tray device are as follows:
1. Convenient connection of bus duct: the so-called plug-in bus duct, fireproof bridge is the way it uses plugged in.
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Wiener's built-in current transformer
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Characteristics of the common box closed busbar - Wiener
The common box closed bus includes the non-phase isolated, common box closed bus, phase isolated common box closed bus and AC and DC excitation common box bus, which are used for current transmission between the generator lead wire below 100MW and the low-voltage side of the main transformer or between the low-voltage side of the transformer and the high-voltage distribution device of the unit of 75MW and above.
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Advantages of a shared DC bus system – Wienal
The shared DC bus system is the future development direction in the application of multi-drive motors, which makes reasonable use of the regenerative energy of the system together with better dynamic and static functions and speed regulation accuracy, eliminating a lot of braking units and braking resistors, and the energy efficiency ratio of the system has been greatly improved.
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The importance of busbar systems in low-voltage switchgear
One of the characteristics of low-voltage switchgear is the multi-functional busbar system.
The bus bar is a conductor that connects large electrical equipment such as generators and transformers with various electrical equipment. The role of the bus is to, sub-...
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