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DL/T 2023-2019 English PDF

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DL/T 2023-2019: Field test code of SFC-based starting system for gas turbine generator unit
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DL/T 2023-2019	279	Add to Cart	3 days	Field test code of SFC-based starting system for gas turbine generator unit	Valid

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Basic data

Standard ID: DL/T 2023-2019 (DL/T2023-2019)
Description (Translated English): Field test code of SFC-based starting system for gas turbine generator unit
Sector / Industry: Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard: K56
Classification of International Standard: 27.100
Word Count Estimation: 12,154
Date of Issue: 2019-06-04
Date of Implementation: 2019-10-01
Quoted Standard: GB 50150; GB/T 15135; DL/T 596
Issuing agency(ies): National Energy Administration
Summary: This standard specifies the test items, test methods and test criteria for the field test of the static variable frequency starting system of gas turbine generators. This standard applies to the field test of the static variable frequency starting system of gas turbine generators.

DL/T 2023-2019: Field test code of SFC-based starting system for gas turbine generator unit

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Field test code of SFC-based starting system for gas turbine generator unit ICS 27.100 K 56 Record number. 63143-2018 People's Republic of China Electric Power Industry Standard Static frequency conversion starting system of gas turbine generator Field test procedures 2019-06-04 released 2019-10-01 implementation Issued by National Energy Administration

Foreword...II 1 Scope...3 2 Normative references...3 3 Terms and definitions...3 4 Basic regulations...4 5 Static test...4 6 Dynamic test...9 7 Test report...10

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation". Please note that some of the contents of this document may involve patents, and the issuing agency of this document is not responsible for identifying these patents. This standard was proposed by the China Electricity Council. This standard is under the jurisdiction of the Electric Power Industry Standardization Technical Committee (DL/T C09). Drafting organizations of this standard. East China Electric Power Test and Research Institute of China Datang Group Science and Technology Research Institute Co., Ltd., China Electric Power Research Institute Institute, North China Electric Power Research Institute, State Grid Shandong Electric Power Research Institute, State Grid Hubei Electric Power Research Institute, State Grid Hebei Electric Power Research Institute Research Institute, State Grid Zhejiang Electric Power Research Institute, State Grid Anhui Electric Power Research Institute, State Grid Science and Technology Research Institute Chengdu Electric Power Technology Branch, Shanghai Caojing Thermal Power Co., Ltd., Guangdong Datang International Zhaoqing Thermal Power Co., Ltd., Zhejiang Datang International Shaoxing Jiangbin Thermal Power Co., Ltd. Ren company, Chinese People’s Liberation Army Artillery Air Defense Academy, Nanjing Nanrui Relay Electric Co., Ltd., Guodian Nanrui Technology Co., Ltd. Division, Datang Thermal Power Technology Research Institute. The main drafters of this standard. Dai Shenhua, Sheng Mingjun, Chen Yanyun, Shi Yang, Wu Long, Cao Zhiwei, Wang Dongyang, Zhang Jianzhong, Cai Wanli, Jiang Jianming, Wu Kuayu, Zhong Lei, Guo Laijia, Xiong Hongtao, Wang Rui, Shi Xiangjian, Hu Gang, Zhang Junxiong, He Xiaowei, Hu Jing, Wang Jinsong. This standard is issued for the first time. The opinions or suggestions during the implementation of this standard are fed back to the Standardization Management Center of China Electricity Council (No. 2 Baiguang Road, Beijing) One, 100761). Field Test Regulations for Static Frequency Conversion Starting System of Gas Turbine Generator

1 Scope

This standard specifies the test items, test methods and test criteria for the field test of the gas turbine generator static frequency conversion starting system. This standard applies to the field test of the gas turbine generator static frequency conversion starting system.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 15135 Gas Turbine Vocabulary GB 50150 Electrical equipment installation engineering electrical equipment handover test standard DL/T 596 Preventive test procedures for electrical equipment

3 Terms and definitions

The following terms and definitions defined in GB/T 15135 apply to this standard. 3.1 Static frequency converter; SFC It is composed of a thyristor converter bridge, a DC smoothing reactor, a cooling system and a control and protection unit, and a device with variable frequency power output capability Prepared. 3.2 SFC-based starting system It is composed of static frequency converter, input circuit breaker, isolation transformer, filter (optional), output switch A system in which the generator is driven from the cranking speed to the self-sustaining speed. 3.3 Input circuit breaker It is configured on the input side of the static frequency converter, connected to the power supply of the static frequency conversion starting system and the circuit breaker of the isolation transformer. 3.4 Isolation transformer For the step-down transformer configured between the input circuit breaker and the static inverter, the low-voltage side winding can be single winding or different phases. Bit dual winding. 3.5 Output transfer switch Configured on the output side of the static inverter, a switch with switching function.

4 Basic regulations

4.1 Test items and cycle The field test includes handover test and regular test. For specific test items, see Table 1 and Table 2.The period of regular test is generally 1 to 3 years. 4.2 Test preparation 4.2.1 Before the test, a test program shall be formulated in accordance with the unit’s infrastructure or maintenance plan. The test program shall include the test purpose, test basis, and test strips. Parts, test items, test procedures, precautions, safety measures, time plan and organizational measures. 4.2.2 Prior to the test, each participating unit of the test shall refine the safety measures and prepare a safety isolation and emergency plan. 4.3 Test standards The equipment handover test of the static frequency conversion starting system shall be carried out according to GB 50150 covered by GB 50150.

5 Static test

5.1 Insulation resistance test The insulation resistance test requirements are as follows. a) Test conditions. The surface of the tested equipment should be clean and tidy, and the electrical circuit wiring of each equipment of the static frequency conversion starting system should be correct. b) Test method. Choose an insulation resistance tester suitable for the test voltage, see Table 3 for the test voltage. c) According to DL/T 596, the test criteria are shown in Table 3. 5.2 DC resistance test The DC resistance test requirements are as follows. a) Test conditions. The surface of the tested equipment should be clean and tidy, and the electrical circuit wiring of each equipment of the static frequency conversion starting system should be correct. b) Test method. Choose a suitable DC resistance tester. c) According to DL/T 596, the test criteria are shown in Table 4. 5.3 Network bridge and machine bridge test 5.3.1 Overvoltage protection test The requirements for the overvoltage protection test are as follows. a) Test conditions. the static frequency conversion starting equipment has been correctly installed and passed the acceptance, disconnect the thyristor overvoltage protection device and the static frequency conversion Start the connection of the equipment and prepare for the test wave recording. b) Test method. Apply test voltage in parallel on both sides of the thyristor overvoltage protection device, gradually increase the test voltage until the device operates, Test voltage curve at the moment of operation of the measuring device. c) Test criterion. the deviation of the operating voltage from the design value does not exceed 10% of the design value. 5.3.2 Small current test of bridge The requirements of the bridge low current test are as follows. a) Test conditions. The static frequency conversion starting equipment has been correctly installed and passed the acceptance test, disconnect the bridge and the isolation transformer, disconnect the network Bridge and machine bridge connection. b) Test method. Connect the three-phase voltage suitable for the test through a three-phase air circuit breaker at the input end of the network bridge, and connect an appropriate For resistive load, use an oscilloscope to observe the bridge output waveform. Start the static frequency conversion start system, gradually change the trigger angle, remember Record the corresponding output DC voltage value. The output DC voltage can be calculated according to the following formula. 5.4 Functional test of cooling device The functional test requirements of the cooling device are as follows. a) Test conditions. The static frequency conversion starting equipment has been correctly installed and passed the acceptance. b) Test method. Start the cooling device, check the auxiliary contacts and rotation direction of the cooling fan or cooling water pump. c) Test criterion. the state feedback of the auxiliary contact of the cooling fan or cooling water pump, the rotation direction of the cooling fan or cooling water pump is correct, the electric The machine is normal. 5.5 Static inverter control and protection unit test 5.5.1 Signal circuit transmission test The signal circuit transmission test requirements are as follows. a) Test conditions. The static frequency conversion starting system has been powered on, there is no abnormal alarm, there is no error in the related wiring, and the switching elements are in an open state. b) Test method. All operation, protection, limitation and signal circuits of the static frequency conversion starting system are tested according to the design logic. check. c) Test criteria. to ensure compliance with design logic and supply requirements. 5.5.2 Analog unit test The test requirements for analog units are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. Three-phase AC voltage source (output 0V~150V, 10Hz~55Hz, the error is not more than ±0.5%), three-phase AC current source (output 0V~10A, 10Hz~55Hz, the error is not big Within ±0.5%). Connect the three-phase AC voltage source and current source to the static frequency conversion starting equipment to simulate the grid-side voltage, grid-side current, Machine side voltage, machine side current. b) Test method. 1) Grid side voltage. change the output value of the input voltage source within the range of 0~120% of the rated voltage, set 5~10 test points, and record Record the displayed value of the static frequency conversion starting system, the deviation is less than 0.5%; 2) Grid side current. change the output value of the input current source within the range of 0~120% of the rated starting current, set 5~10 test points, Record the display value of the static frequency conversion starting system, the deviation is less than 0.5%; 3) Machine side voltage. change the output value of the input voltage source within the range of 0~120% of the rated voltage, set 5~10 test points, and record Record the display value of the static frequency conversion starting system, the deviation is less than 0.5%; the voltage remains at the rated value, in the range of 10Hz~50Hz Change the input voltage frequency within the enclosure, set 5~10 test points, record the display value of the static frequency conversion starting system, the voltage frequency Deviation is less than 0.1Hz; 4) Machine side current. Change the output value of the input current source within the range of 0~120% of the rated starting current, set 5~10 test points, Record the display value of the static frequency conversion starting system, the deviation is less than 0.5%; the current keeps the rated starting value unchanged, at 10Hz~50Hz Change the input current frequency within the range, set 5~10 test points, record the display value of the static frequency conversion starting system, the current frequency The rate deviation is less than 0.1 Hz. c) Test criteria. grid-side voltage amplitude deviation is less than 0.5%; grid-side current amplitude deviation is less than 0.5%; machine-side voltage amplitude deviation is small The frequency deviation is less than 0.5%, and the frequency deviation is less than 0.1 Hz; the machine-side current amplitude deviation is less than 0.5%, and the frequency deviation is less than 0.1 Hz. 5.5.3 Switch unit test The test requirements of the switch unit are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. b) Test method. Check the input and output signals of the static frequency conversion starting system one by one through the static frequency conversion system screen display or board instructions. c) Test criterion. The signal of the switch unit meets the design requirements. 5.5.4 Protection function test 5.5.4.1 Overcurrent protection test on the bridge side The requirements for the bridge side overcurrent protection test are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. Three-phase AC current source (output 0V~10A, no error Greater than ±0.5%). b) Test method. 1) At the bridge side current sampling input terminal of the static inverter control and protection unit, the bridge side current at the time of simulation start is passed, which is larger Corresponds to 1.05 times of the fixed value of overcurrent protection on the bridge side, so that the overcurrent protection on the bridge side is activated, and the corresponding protection action is recorded. Make time. 2) At the bridge side current sampling input terminal of the static inverter control and protection unit, the bridge side current at the time of simulation start is passed, which is larger Corresponding to 0.95 times of the fixed value of the bridge-side over-current protection, the bridge-side over-current protection should not operate. c) Test criterion. The action value and action time are consistent with the settings, and the overcurrent protection action signal on the bridge side is correctly issued. 5.5.4.2 Overvoltage protection test on the bridge side The requirements for the bridge side overvoltage protection test are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. Three-phase AC voltage source (output 0V~150V, error Not more than ±0.5%). b) Test method. 1) The bridge-side voltage sampling input terminal of the static inverter control and protection unit is connected to the bridge-side voltage at the time of analog start, which is greater than Corresponds to 1.05 times of the fixed value of overvoltage protection on the bridge side, so that the overvoltage protection on the bridge side is activated, and the corresponding protection action is recorded. Make time. 2) The bridge-side voltage sampling input terminal of the static inverter control and protection unit is connected to the bridge-side voltage at the time of simulation start, which is greater than Corresponding to 0.95 times of the fixed value of overvoltage protection on the bridge side, the overvoltage protection on the bridge side should not operate. c) Test criterion. the action value and action time are consistent with the settings, and the overvoltage protection action signal on the bridge side is correctly issued. 5.5.4.3 Low voltage protection test on the bridge side The requirements for the low-voltage protection test on the bridge side are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. Three-phase AC voltage source (output 0V~150V, error Not more than ±0.5%). b) Test method. 1) The bridge-side voltage sampling input terminal of the static inverter control and protection unit is connected to the bridge-side voltage at the time of analog start, which is greater than Corresponds to 0.95 times of the fixed value of the low-voltage protection on the bridge side, enabling the low-voltage protection on the bridge side to act, and record the corresponding protection action Make time. 2) The bridge-side voltage sampling input terminal of the static inverter control and protection unit is connected to the bridge-side voltage at the time of simulation start, which is greater than Corresponds to 1.05 times of the fixed value of the low-voltage protection on the bridge side, and the low-voltage protection on the bridge side should not operate. c) Test criteria. the action value and action time are consistent with the settings, and the low-voltage protection action signal on the bridge side is correctly issued. 5.5.4.4 Engine bridge side overcurrent protection test The requirements for the over-current protection test on the bridge side are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. Three-phase AC current source (output 0V~10A, no error Greater than ±0.5%). b) Test method. 1) At the bridge side current sampling input terminal of the static inverter control and protection unit, the bridge side current at the time of simulation start is passed, which is larger Corresponds to 1.05 times of the fixed value of overcurrent protection on the bridge side, so that the overcurrent protection on the bridge side is activated, and the corresponding protection action is recorded. Make time. 2) The bridge-side current sampling input terminal of the static inverter control and protection unit is connected to the bridge-side current at the time of simulation start, which is larger Corresponding to 0.95 times of the fixed value of over-current protection on the bridge side, the over-current protection on the bridge side should not operate. c) Test criterion. the action value and action time are consistent with the settings, and the overcurrent protection action signal on the bridge side is correctly issued. 5.5.4.5 Overvoltage protection test on the bridge side The requirements for the overvoltage protection test on the bridge side are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. Three-phase AC voltage source (output 0V~150V, 10Hz~55Hz, the error is not more than ±0.5%). b) Test method. 1) The bridge-side voltage sampling input terminal of the static inverter control and protection unit is connected to the bridge-side voltage at the time of analog start. Corresponds to 1.05 times of the fixed value of overvoltage protection on the bridge side, so that the overvoltage protection on the bridge side is activated, and the corresponding protection action is recorded. Make time. 2) The bridge-side voltage sampling input terminal of the static inverter control and protection unit is connected to the bridge-side voltage at the time of analog start, which is larger Corresponds to 0.95 times of the fixed value of overvoltage protection on the bridge side, and the bridge overvoltage protection should not operate. c) Test criterion. The action value and action time are consistent with the settings, and the overvoltage protection action signal on the bridge side is correctly issued. 5.5.4.6 V/Hz protection test on the bridge side V/Hz protection test requirements on the bridge side are as follows. a) Test conditions. The static frequency conversion starting system has been powered on and there is no abnormal alarm. Three-phase AC voltage source (output 0V~150V, 10Hz~55Hz, the error is not more than ±0.5%). b) Test method. 1) At the bridge side voltage sampling input terminal of the static inverter control and protection unit, the bridge side voltage at the time of analog start is passed, and its frequency Choose 3~6 points randomly between 10Hz ......

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