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Summary of Contents for BYD DESS-B08P03A-A
- Page 1 User Manual Distributed Energy Storage System DESS-B08P03A-A BYD COMPANY LIMITED NO.3009, BYD Road, Pingshan, Shenzhen, 518118, P.R.China Website: www.bydenergy.com Providing green, stable safe electric power. Build Your Dreams...
- Page 2 Distributed Energy Storage System Build Your Dreams Content 1 Brief Introduction ....................1 2 Installation ......................1 Component List ........................1 Recommended Cable Sizes ....................2 Installation Placement ......................3 Electrical Connection ......................4 3 Startup and Shutdown ..................5 System Startup ........................
- Page 3 Build Your Dreams Brief Introduction The distributed energy storage system (DESS) is designed and developed by BYD Auto Industry Company Limited, and can be widely used in residential and commercial applications. DESS is a power supply device with multiple working modes. It can operate in different working modes to suit a range of requirements.
- Page 4 Table2.2. The length of cables shall be determined based on the actual installation location and load requirements. Warning: Please use the cable sizes recommended by BYD. As a guide only. (DC, AC cables shall follow the local electrical standards) Table 2.2 Cable Specification (Recommended)
- Page 5 Distributed Energy Storage System Build Your Dreams Installation Placement The DESS cabinet shall be placed on a level surface and vertically installed. The correct placement of the system cabinet ensures the reliability and safety of the batteries. The DESS cabinet must also be installed in a weatherproof location.
- Page 6 Distributed Energy Storage System Build Your Dreams Electrical Connection AC-SI-L2 AC-INPUT-L AC OUTPUT-L AC-SI-L1 BIG LOAD EARTH Fig 2.3 Terminal block Table 2.3 Description of terminal block TERMINAL BLOCK DESCRIPTION AC-INPUT-L Grid input ( <15kw) AC-SI-L1 Big solar inverter input (3kW～10kW) BIGLOAD Big load input (<15kw) –...
- Page 7 Distributed Energy Storage System Build Your Dreams Startup and Shutdown DESS internal components and circuit protection. Isolation fuse QF Circuit Breaker MCB 1 Fig 3.1 Cabinet internal configuration...
- Page 8 Distributed Energy Storage System Build Your Dreams Circuit breakers Bypass rotary switch NORMAL BYPASS Fig 3.2 Rotary switch on left side of the cabinet AC-BIG-SI AC-SI AC-SI DISCONNECT BYPASS DISCONNECT GRID AC-OUTPUT AC-OUTPUT AC-INPUT DISCONNECT DISCONNECT BYPASS DISCONNECT Fig 3.3 Circuit breakers on left side of the cabinet...
- Page 9 2) If the DESS startup normally but stops working shortly thereafter that, check the external input load power is appropriately rated. Also check for possible short circuits, and ensure there is adequate battery capacity remaining. If the fault cannot be found or solved, please contact your local agent or BYD Company Limited.
- Page 10 Selecting the Bypass Function BYD DESS is designed with a bypass function. This function is designed to ensure that in the unlikely event of a fault with the DESS, that the unit can be bypassed. It also allows system maintenance to be conducted while still supplying essential house loads.
- Page 11 Distributed Energy Storage System Build Your Dreams Select the “System setting” icon on the main sub menu of advanced settings to enter into the system setting interface as shown in Fig 4.2. Fig 4.2 System setting interface Select the “Language” icon on the System setting interface to enter into the system language setting interface as shown in Fig 4.3.
- Page 12 Distributed Energy Storage System Build Your Dreams NOTE: Select the language setting shortcut button on the top left of the main page to enter the language setting page. Language setting shortcut button Fig 4.4 Language setting shortcut button Select the “Time Setting” icon on the System setting interface to enter into the time setting interface as shown in Fig 4.5.
- Page 13 Distributed Energy Storage System Build Your Dreams NOTE: Incorrect time setting will result in inaccurate recording of electricity usage/generation history, and abnormal operating times of inverter. Select the “Time Zone” iron on the System setting interface to enter into the time zone setting screen as shown in Fig 4.6.
- Page 14 Distributed Energy Storage System Build Your Dreams Working Modes Select the “Setting” iron of the control column on the touch screen to enter into the main interface of advanced settings as shown below: The arrow shows the current working mode Fig 5.1 Main interface of advanced settings Depending on the user’s power requirement there are four different working modes that are available.
- Page 15 Distributed Energy Storage System Build Your Dreams Fig 5.2 Setup interface of matching load mode In the working mode of matching load, there are two parameters which can be modified by the user: PV/BATT Use Mode: Determines the usage type of batteries’ or PV energy, and there are two available parameters , the default is GMLP with the explanation as follows: GMLP (Grid-tie Match Load Priority): Matching the local load priority.
- Page 16 Distributed Energy Storage System Build Your Dreams the PV grid-tied inverter. When the battery capacity is full and there is still excess PV energy generated, the system will disconnect the PV grid-tied inverter until the battery capacity decreases to 80%, then the system will re-establish the connection. System Min SOC: Is the minimum SOC left when the grid is in normal operation to provide off-grid backup power supply when the grid is off or in failure.
- Page 17 Distributed Energy Storage System Build Your Dreams In the working mode of maximum storing energy, there is one parameter which can be modified by the user: PV/BATT Use Mode: Determines the usage type of batteries’ or PV energy, and there are three available parameters , the default is GSO with the explanation shown below: GSO: Maximum discharging power only on-grid.
- Page 18 Distributed Energy Storage System Build Your Dreams 5.3 Detailed Setup for Load Shifting Mode Load Shifting: In the Load Shifting mode the DESS is able to be programmed to enable a set charge period from the grid and a discharge period to the loads. Select “Load Shifting”...
- Page 19 Distributed Energy Storage System Build Your Dreams GMLO (Grid-tie Match Load Only): Matching the local load only. When the battery capacity is not full and higher than the min SOC, if the AC energy generated by the PV grid-tied inverter is higher than the power needed by the local loads and the system is in the discharging period, then the power that the local load needs is provided by the PV grid-tied inverter and the excess PV energy shall be converted into DC power to charge the battery bank (under the premise that the power of the local load is no more than the nominal...
- Page 20 Distributed Energy Storage System Build Your Dreams 5.4 Detailed Setup for Tariff Management Tariff Management: In Tariff Management working mode the DESS can be setup to provide up to three grid charge times and three discharge times to load. The existing grid tied inverter is connected to the system and is first used to supply the load and the excess to charge the battery bank.
- Page 21 Distributed Energy Storage System Build Your Dreams Select “Tariff Management” to enter into the detailed setup interface of Tariff Management mode. See Fig 5.5 and Fig 5.6. Fig 5.5 Setup interface 1 of tariff management mode Fig 5.6 Setup interface 2 of tariff management mode In the working mode of tariff management, the following parameters can be modified by the user: Max on-grid charge current: Represents the maximum battery charging current from the grid.
- Page 22 Distributed Energy Storage System Build Your Dreams Charge End Time1: Represents the end time point of battery charging from grid in the system charging period 1. Charge Start Time2: Represents the starting time point of battery charging from grid in the system charging period 2.
- Page 23 Distributed Energy Storage System Build Your Dreams Maintenance To ensure the successful and safe operation of the DESS, please follow the below information to maintain the DESS: NOTE: Maintenance must be performed by a suitably qualified and licensed person. 1. Regulars check the cabling of the DESS, especially the fans, input/output terminal and grounding wires.
- Page 24 Distributed Energy Storage System Build Your Dreams Fig 6.1 Main interface of advanced settings Select the “Maintenance” iron on the main interface of advanced settings to enter into the system maintenance interface as shown below: Fig 6.2 Maintenance interface Select the “Clear history accumulated power” button on the maintenance page, then “confirm”. All the accumulated energy information will be cleared.
- Page 25 Distributed Energy Storage System Build Your Dreams DESS Connection Topology NOTE: Circuit protection devices and ratings not shown. All cabling and protection must meet the appropriate standards.
- Page 26 Distributed Energy Storage System Build Your Dreams DESS Specifications Product Type DESS-B08P03A-A Continuous Power Rating AC Parameters Nominal AC Voltage 240Vac Max Output Current 13.1A /ac Nominal AC Frequency 50Hz Grid-tied <4% Off-grid <2% AC Transfer Switch Speed <20ms Max Invert Efficiency 93.7%...
- Page 27 Distributed Energy Storage System Build Your Dreams Build Your Dreams User Manual for DESS-B08P03A-A October, 2013 Designed by BYD Electric Power Research Institute, BYD Co., Ltd.
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