On March 16, 2026, the Standards for Determining Major Power Accident Hazards and Regulations on Supervision and Administration of Hazard Management were reviewed and approved at the 29th executive meeting of the National Energy Administration and will officially take effect on July 1, 2026.

Article 5 of the new regulations clearly defines the safety red lines for grid connection: wind farms, photovoltaic power stations, and electrochemical energy-storage power stations connected to grids at 220 kV or above will be directly classified as having major power safety hazards if they do not possess Low Voltage Ride Through (LVRT) and High Voltage Ride Through (HVRT) capabilities, have not completed grid-connection tests required by national standards, or have not commissioned their power control systems in accordance with dispatching requirements.

Failure to meet ride-through capability requirements and inadequate grid-connection performance can easily cause grid disturbances, generating-unit disconnections, or even system instability. The new policy further tightens, at the national regulatory level, compliance requirements for renewable energy grid-connection testing and operation & maintenance. Power stations across the industry need to conduct self-inspections and corrective actions in advance and strengthen their testing capabilities.

To meet the mandatory assessment requirements of the new regulations for grid-connection performance, transient waveforms, and comprehensive power-quality testing, HIOKI provides an integrated hardware and software solution featuring core test equipment for renewable energy grid connection, with outstanding hardware advantages:

1. Ultra-high measurement accuracy for precise power measurement across the full frequency range from DC to high frequencies, ensuring accurate and reliable conversion-efficiency evaluation;
2. High sampling rates and strong electromagnetic interference immunity for complete capture of inverter switching dynamics and grid transient waveforms;
3. Flexible expansion of up to 8 channels, supporting synchronous measurement at multiple test points and meeting multi-level test-point requirements at power stations;
4. Safe high-voltage measurement up to 1500 V, suitable for high-voltage grid-connection conditions in photovoltaic and energy-storage applications;
5. Built-in functions including harmonic, flicker, and loss analysis, together with comprehensive interfaces and stable, traceable data;
6. Native compatibility with the full range of Chinese national standards for renewable energy grid connection, covering the entire LVRT/HVRT testing process.

CN056 is HIOKI’s low-voltage ride-through analysis software specifically developed for photovoltaic, wind power, and other renewable energy equipment. It can be used together with power analyzers such as the PW8001 and PW6001. The software accurately evaluates inverter LVRT performance, supports customized standard parameter settings, and enables a single instrument to simultaneously perform pre-ride-through evaluation, efficiency testing, and comprehensive harmonic testing. It is widely applicable to product certification, R&D validation, on-site grid-connection testing, and other scenarios.

With the PW8001 Power Analyzer + CN056 Analysis Software solution, users can comprehensively cover all assessment items required by the new regulations, including low-voltage ride-through, voltage control, dynamic reactive power support, and grid-connection test verification. The solution helps power stations conduct hazard self-inspections, grid-connection performance retesting, and parameter optimization in advance, while retaining traceable test data and compliance reports. It supports regulatory inspections, dispatching documentation, and long-term operation and maintenance monitoring, helping prevent major safety hazards at the source.