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Current market demand for alternative energy is stable growth, so for grid type configuration of distributed power supply, such as solar power and wind power equipment has made specific specification and test standard (for example, the IEEE 1547 / IEC 61000-3-15 / IEC 62116).This equipment manufacturers must be conducted in accordance with the specifications to test to show that equipment is in conformity with standards.

Series 61800, recycling type grid simulation power supply for constant voltage output, can be applied to general electric products (such as: electrical appliances product, switch mode power) test, the 61800 series of load power output, at the same time to pull a load over current set (OCP) composition among to protect 61800.As for the object under test will energy feedback to grid products (such as: solar power inverter, bi-directional charging and discharging machine), such as distributed power generation equipment, at the same time of output voltage, if detection to the output power of "power negative (-)," 61800 will be activated energy recovery mechanism, the inverter is inverse to fill current/negative power energy conversion to the ac grid.Not like a normal ac power can't afford to recharge energy object under test, series 61800 can be applied to the positive and negative voltage/current positive and negative direction of all four quadrants, and have energy recovery function, is enough to become a power grid simulation.

In addition to the distributed power supply test application, 61800 series recycling network simulation power can also be in line with the application in the smart grid and electric vehicles related testing applications, such as: electric test to grid (V2G), energy storage system (ESS) test.61800 series regenerative power grid simulation power supply is not limited to product development using RD stage, also can be applied to the product quality authentication and production stage.

61800 series models using full digital control technology, can be in the biggest phase voltage 300 v and the output of the 30 hz to 100 hz frequency range, providing maximum power.Not only pure AC voltage output, and AC + DC output mode to expand the application of DC bias component testing.In addition to provide party a root double peak continuous maximum output current, are suitable for making the input surge current test of the object under test.

In addition to the stable output voltage and frequency, the 61800 series provides powerful editing function model (STEP/PULSE/LIST), and can simulate various grid abnormal and disturbance state to meet the test requirements.STEP and STEP PULSE mode provided to single or continuous voltage changes.This feature is used to simulate the power interference, such as cycle instantaneous drop, flash, the voltage drop gradually and so on.Users can use the LIST mode to edit more complex test waveforms, contains 100 sequence can be set start and end the state of the, waveform component can contain AC and DC, almost all of the signal waveform can be composed of want.Using these models, the 61800 series can simulate all kinds of transient voltage drop, the interrupt and variation of waveform, at the same time as accord with IEC 61000-4-11 (certification test before) and 4-13-14 / - / - 4-4-28 regulations immunity test.

Function, the user can be used short (synthetic) in 50 hz or 60 hz, for basic frequency, 40 order harmonic component to set, forming periodic waveform distortion.Also provides INTERHAR function, which is used in the base frequency, set another non harmonic frequency components, the change of scanning from 0.01 Hz to 2400 Hz, can help to find resonance point at the input or the object under test anti-interference vulnerabilities.

61800 series models provide a front panel LCD display and keyboard, let users easy manual operation, or available through standard interfaces GPIB, RS - 232, USB and Ethernet interface to computer digital control.Chroma also provide instrument control drive, cooperate under the Labview software, for using the program of the control system integration.

61800 series recycling type grid simulation power provides a micro power grid harmonic distortion of voltage and frequency test need conditions, in accordance with the characteristics of the simulation grid.The most important, 61800 energy recovery function can be generated by the object under test electrical energy with efficient feedback to exchange network, can meet the demand of micro power grid test.61800 series of products of isolation design are included in the input terminal of ac power grid, and so to simulate the micro power grid of the object under test does not need to be installed and isolation device.

61800 series recycling network simulation power to comply with legal test applied to the grid type of distributed power generation equipment (for example, the IEEE 1547 / IEC 61000-3-15 / IEC 62116), the main test project is as follows:

• Grid Voltage abnormal Test (Voltage Abnormality Test)
• Grid Frequency of abnormal Test (Frequency Abnormality Test)
• The island Test (Anti - islanding Test)
• Low Voltage Through testing (Low Voltage Ride Through Test)
• Immunity Test (Immunity Test) voltage change Immunity Test (IEC 61000-4-11 / - 4-34)
• Limit tests (Limit Test) current harmonic and flicker Limit Test (IEC 61000-3-2-3-3) /

61800 series of energy recovery function provides an effective solution to save energy, such as: solar energy generated by the inverter, the tests by 61800 can be efficient feedback to the grid, so don't need another match consumed power resistance.(see below)

Abnormal situation occurs when the grid voltage (e.g., voltage drop), grid type Inverter output (PV makes) must maintain a right time, this time by the degree of voltage sags on (for example: the standard of BDEW, when the voltage drops to 15% of the normal voltage grid type Inverter must maintain normal output of 150 ms), in line with the low voltage across (LVRT) capability of PV makes besides must maintain a right output time requirements, must also be in accordance with the degree of voltage sags for reactive power.

61800 series regenerative power supply can fully meet low voltage power grid simulation through the test requirements, users can use the waveform compiling a LIST of series of functions model LVRT (low voltage across) test conditions, the output voltage of the series 61800 change reaction rate can be completely conform to the requirements of the LVRT test.At the same time in order to understand a photovoltaic inverter output current harmonic components of voltage for TRD (rated gross distortion), the influence of harmonic synthesis function of 61800 can simulate different harmonic power grid voltage to meet the test requirements.Another 61800 series of output frequency resolution is 0.01 Hz, comply with the requirement of BDEW according to frequency resolution.

61800 series regenerative power grid simulation can match 8000 test system and A800067 RLC load to comply with the IEEE 1547 / IEC 62116 test requirements for the island effect.

Chroma 61800 series recycling type grid simulation power can support external input analog signal function, allows user to input from the arbitrary signal generator output of ac and dc waveform and amplify the signal, this function can match the real-time digital simulator used In HIL (Hardware In Loop) simulation waveform and reduction of real power.From the external input analog signal to the voltage output delay time is about 100 mu of s.

61800 series of choose and buy new accessories features, such as B618000: function and energy recovery type ac load B618002:120 kva, 800 vLNXHV high pressure function, further expansion of 61800 series of products for testing application ability. Energy recovery function by CC rectifier type ac load patterns, CP rectifier, CR, CC phase advance (phase lead)/backward (lag) model and CP phase lead/lag behind and so on the many kinds of pattern. Rectifier model is mainly used in simulation of nonlinear rectifier load test, similar Chroma 63800 series ac load operation features, its working voltage and current in the first and third quadrant area.Support functions of CP and CC rectifier model, including current, power and CF for the parameter Settings.

Phase Angle setting range is 90 ~ 90 degrees, in accordance with phase lead/lag behind model simulations of the inductive and capacitive loads corresponding to voltage and current conditions.61800 of energy recovery type ac load function of current waveform in phase lead/lag mode for sine waveform (current, PF and phase Angle parameter Settings), when the phase Angle is set at 90.1 degrees to 180 degrees (90 ~ 180 degrees), 61800 will become a current source (current source).61800 of energy recovery type ac load function is mainly used for EVSE charging stations, hybrid inverter, PCS, UPS, micro power grid (micro - grid) related test application.

B618002 120 kva, 800 v_LNXHV accessories with two 61860 series connection of choose and buy up to 800 v_LNPhase voltage (1385 v_LL) output.Compared with general use step-up transformer high voltage mode, B618002 XHV choose accessories can provide better output voltage transient performance and characteristics, in accordance with photovoltaic Inverter used in high voltage (HV PV makes) test requirements (line voltage of 1000 v_LL).

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