Foreword: Review
Energy storage refers to the process of storing energy through a medium or equipment and releasing it when neededElectric energy storage。Among them:Lithium-ion batteriesThe development of electrochemical energy storage is the most rapid.
As a global leader in the field of electrical measurement, Hioki Hioki has energy conversion, energy storage PCS system, energy storage battery detection, etcProvide multi-scenario energy storage measurement solutionsto meet the needs of on-site testing such as large-scale energy storage current, high voltage, and safe use of batteries, and promote the innovative research and development of energy storage equipment and the improvement of energy storage safety and reliability.
Hiki's multi-scenario energy storage measurement solution
Test scheme for PCS converter for daily energy storage
"Check" for new energy conversion and grid connection
Energy storage converter, also known as bidirectional energy storage inverter PCS (power conversion system), is a device that realizes the two-way conversion of electric energy, which can not only convert the direct current of the battery into alternating current and transmit it to the power grid;It is also possible to rectify the alternating current of the power grid into direct current and charge the battery.
Energy storage PCS converter is the core key equipment of grid connection, and BIKI provides the overall measurement scheme of energy storage PCS converter in line with the national "GB T 34133-2017 Energy Storage Converter Testing Technical Regulations", covering the following multiple test items, to help customers easily and competently inspect energy conversion efficiency and power quality, and escort the stability of new energy grid-connected.
1. Hiki energy storage PCS measurement solutions and products
PCS Test Procedures – Power and Efficiency Testing
Hiki'sPower analyzer PW8001It is a flagship model with high precision and high bandwidth, with an accuracy of up to 001%rdg+0.02%Range, which not only measures 50 Hz to 60 Hz, but also has excellent measurement accuracy in frequency bandwidths such as DC and 50 kHz for accurate evaluation of power conversion efficiency.
It is used for rectifier efficiency detection, inverter efficiency detection, standby loss and no-load loss detection, power control detection, power factor detection, grid frequency and voltage adaptability testing, low voltage ride-through ability testing, anti-islanding protection performance testing and other test items. While ensuring the efficiency of power generation, it can measure the ability of current and voltage fluctuations to cause wind power or photovoltaic units to stop operating.
PW8001 has high sampling performance and anti-interference with a sampling rate of 18-bit, 15 MHz and anti-interference (CMRR) 110 dB 100 kHz.
IISafety testing - insulation withstand voltage testing
The safety test of the energy storage converter PCS includes: the method of applying the processing frequency withstand voltage verifies the ability of the complete set of equipment to withstand the temporary transition voltage and the integrity of the solid insulation;Clearance and creepage distance detection.
Hiki'sAutomatic insulation withstand voltage tester 3153It is a model that integrates AC DC withstand voltage and insulation test. It can be fully remotely controlled to implement withstand voltage test (AC DC5000V, 100mA) and insulation resistance test (DC50V 1200V, 9999M), with a basic accuracy of 4 rdg;And through the PWM control method, an accurate test voltage is generatedIt is suitable for insulation withstand voltage detection of energy storage converters and individual electronic devices.
Power quality testing
Power quality testing is related to the safety and reliability of new energy grid-connected power generation system, and is a very important inspection link. GB T 34133-2017 standard power detection, covering "current harmonic detection, voltage harmonic detection, current harmonic detection, voltage harmonic detection, flicker detection, three-phase unbalance detection, output voltage deviation detection, output frequency deviation detection, voltage dynamic transient value detection, power quality event recording" and other test items.
HiokiPower Quality Analyzer PQ3198It has certain advantages in power quality testing. It has the ability to accurately capture various power supply anomalies, conforms to international IEC61000 and GB high standards, has high precision, high frequency and width, and supports three-phase AC and DC dual system measurement, data synchronization and remote monitoring.
PQ3198 uses the free power quality analysis software PQ ONE, which can directly generate reports that meet national standards, helping users easily and accurately conduct power supply analysis and eliminate power failures.
Energy storage converter waveform analysis and analysis
Evaluation of input and output characteristics
Use HiokiStorage Recorder MR6000Record the short-circuit current waveform and data according to the GB standard, and record the protection action time of the energy storage converter. The MR6000 is an innovative model of memory recorder with an accuracy of 01%，0.3%，0.5%, Combined with the high-speed analog unit U8976, it can have the highest sampling speed for insulation measurement of 200ms s, and can be saved in real time to record the voltage and current waveforms of the energy storage converter for a long time.
It can easily record and analyze the charging and discharging conversion time detection, and off-grid switching detection, short circuit protection detection, reverse polarity protection detection, DC over-under-voltage protection detection, off-grid over-current protection detection and other test items.
Conclusion
The commitment to carbon neutrality has sounded the clarion call for the leapfrog development of new energy in China, and energy transformation and upgrading and the construction of a new power system are one of the core strategies of national development.
The country's 2021 "Guiding Opinions on Accelerating the Development of New Energy Storage" predicts that green energy storage will reach more than 30GW by 2025. The market demand for energy storage equipment represented by batteries is surging, and the development opportunities for energy storage are unprecedented.
Standing at the forefront of the world's measurement field, HIOKI has always worked with customers to actively promote the wider application of green clean energy and energy storage, and is committed to providing customers with advanced and reliable measurement solutions, boosting innovation, protecting energy safety, and helping to achieve the goal of carbon peak, carbon neutrality and carbon neutrality.