GB/T 34133-2023Testing code for power conversion system of energy storage system (English PDF)

3.1 Terms and Definitions

The terms and definitions defined in GB/T 34120 and DL/T 2528 are applicable to this document.

3.2 Symbols

The following symbols are applicable to this document.

Pn. the rated power, expressed in kW or MW;

Un. the AC port rated voltage, expressed in V or kV;

Vdc_max. the maximum DC voltage of energy storage converter, expressed in V or kV.

4.3 The detection content of the energy storage converter shall include appearance, protection

degree, basic functions, electrical performance, safety performance, electromagnetic compatibility, auxiliary systems, marking and packaging, etc.

4.4 During the detection, test data and environmental conditions shall be recorded. After the detection is completed, a detection report shall be issued. The detection report shall include detection conditions, detection equipment, detection basis, detection process and detection conclusions, etc.

5.1 Environmental Conditions

Unless otherwise specified, the detection environment shall satisfy the following requirements.

5.2 Electrical Conditions

When directly connected to the public power grid, the power quality of the grid shall satisfy the following requirements.

6.1 Detection Instruments

The accuracy levels of voltage / current sensors, thermometers and hygrometers, sound level meters and data acquisition devices shall at least satisfy the requirements of Table 1.The detection instruments and meters shall satisfy the following requirements.

6.2 Power Grid Simulation Device

The power grid simulation device shall satisfy the following requirements.

6.3 Voltage Fault Generation Device

6.3.1 Low-voltage fault generation device

The low-voltage fault generation device should adopt a passive device. The device structure is shown in Figure 1.The device performance shall satisfy the following requirements.

6.3.2 High-voltage fault generation device

The high-voltage fault generation device should adopt a passive device. The device structure is shown in Figure 2.The device performance shall satisfy the following requirements.

6.3.3 Continuous fault generation device

The continuous fault generation device should adopt a passive device. The device structure is shown in Figure 3.The device performance shall satisfy the following requirements.

6.4 Battery Simulation Device

The battery simulation device shall satisfy the following requirements.

a) The output voltage deviation value is less than 0.1% of the maximum DC voltage of

6.5 AC Load

The AC load shall satisfy the following requirements.

6.6 Temperature Detection Equipment

The temperature detection equipment shall satisfy the following requirements.

6.7 Signal Generation and Collection Device

The signal generation and collection device shall satisfy the following requirements.

6.8 Temperature / Humidity Test Chamber

The temperature / humidity test chamber shall satisfy the requirements of GB/T 2424.6

6.9 Salt Mist Detection Equipment

The salt mist detection equipment shall satisfy the requirements of GB/T 2423.18.

6.10 Adjustable Resistor

The adjustable resistor shall satisfy the following requirements.

6.11 Electromagnetic Compatibility Detection Equipment

The electromagnetic compatibility detection equipment shall satisfy the requirements of GB/T 17626.2, GB/T 17626.3, GB/T 17626.4, GB/T 17626.5, GB/T 17626.6, GB/T 17626.8 and GB 4824.

6.12 Other Instruments and Equipment

Other instruments and equipment shall include access probes, xenon arc lamps, carbon arc lamps, insulation strength testers and touch current testers, etc., and shall satisfy the following requirements.

7.1 Appearance Inspection

The appearance inspection of the energy storage converter includes the following contents.

7.2 Protection Degree

The protection degree detection is carried out in accordance with the method specified in GB/T 4208.

8.1 Start and Stop

The start and stop detection shall be carried out in accordance with the following steps.

8.2 Alarm and Protection

8.2.1 Reverse polarity connection

The reverse polarity alarm and protection detection shall be carried out in accordance with the following steps.

8.2.2 AC incoming line phase sequence error

The alarm and protection detection of AC incoming line phase sequence error shall be carried out in accordance with the following steps.

8.2.3 DC voltage

8.2.3.1 DC overvoltage

The DC overvoltage alarm and protection detection shall be carried out in accordance with the following steps.

8.2.3.2 DC undervoltage

DC undervoltage alarm and protection detection shall be carried out in accordance with the following steps.

8.2.4 Overcurrent

8.2.4.1 AC port

The AC port overcurrent alarm and protection detection shall be carried out in accordance with the following steps.

8.2.4.2 DC port

The DC port overcurrent alarm and protection detection shall be carried out in accordance with the following steps.

8.2.5 Overtemperature

The overtemperature alarm and protection detection shall be carried out in accordance with the following steps.

8.2.6 Communication fault

The communication fault alarm and protection detection shall be carried out in accordance with the following steps.

8.3 Insulation Resistance Monitoring

The insulation resistance monitoring function detection shall be carried out in accordance with the following steps.

The communication and operation information monitoring function detection shall be carried out in accordance with the following steps.

a) In accordance with Figure 4, connect the detection circuit;

b) Connect the energy storage converter to the signal generation and collection device;

c) Connect switches Q1 and Q2 to start the energy storage converter;

d) Through the signal generation and collection device, issue start-stop commands to the energy storage converter;

e) Through the signal generation and collection device, issue a power control command of 20%Pn operation to the energy storage converter;

f) Record the start-stop and power control command response of the energy storage converter;

g) Through the signal generation and collection device, set the energy storage converter to operate at 30%Pn;

h) Check the voltage, current and power of the DC port, as well as the voltage, current, frequency and power of the AC port of the energy storage converter collected by the signal generation and collection device;

i) Check whether the energy storage converter is equipped with communication and operation information monitoring function.

9.1 Power Output Range

The power output range detection shall be carried out in accordance with the following steps.

9.2 Active Power Control

The active power control detection shall be carried out in accordance with the following steps.

9.3 Primary Frequency Modulation

Primary frequency modulation detection shall be carried out in accordance with the following steps.

9.4 Inertia Response

The inertia response detection shall be carried out in accordance with the following steps.

9.5 Reactive Power Control

9.5.1 Voltage / reactive power control

The voltage / reactive power control detection shall be carried out in accordance with the following steps.

9.5.2 Power factor control

The power factor control detection shall be carried out in accordance with the following steps.

9.5.3 Constant reactive power control

The constant reactive power control detection shall be carried out in accordance with the following steps.

9.5.4 Online switching of reactive power control mode

The reactive power control mode online switching detection shall be carried out in accordance with the following steps.

9.9 Voltage Ripple and Current Ripple

The voltage ripple and current ripple detection shall be carried out in accordance with the following steps.

9.10 Power Quality

9.10.1 Harmonic current

The harmonic current detection shall be carried out in accordance with the following steps. ......