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DL/T 2022-2019: Operation code of SFC-based starting system for gas turbine generator unit
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Operation code of SFC-based starting system for gas turbine generator unit
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DL/T 2022-2019
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Basic data | Standard ID | DL/T 2022-2019 (DL/T2022-2019) | | Description (Translated English) | Operation 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 | 11,179 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Quoted Standard | GB/T 3797; GB/T 15135; DL/T 572 | | Issuing agency(ies) | National Energy Administration | | Summary | This standard specifies the operating conditions, operation, operation monitoring and inspection, operation and maintenance of the static variable frequency starting system of gas turbine generators. This standard applies to the static variable frequency starting system of gas turbine generators. | DL/T 2022-2019: Operation 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.
Operation guidelines 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
Operating procedures
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Terms and definitions...1
4 General...2
5 Operating conditions...2
6 Operation...3
7 Operation monitoring and inspection...4
8 Operation abnormality and troubleshooting principles...6
Appendix A (informative appendix) Main equipment of static variable frequency starting system...7
Appendix B (informative appendix) Spare parts and special tools for static frequency conversion starting system...8
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 Co., Ltd., State Grid Science and Technology Research Institute Chengdu Electric Power Technology Branch,
Shanghai Caojing Thermal Power Co., Ltd., Chinese People’s Liberation Army Artillery Air Defense Force Academy, Guangdong Datang International Zhaoqing Thermal Power Co., Ltd.
Company, Zhejiang Datang International Shaoxing Jiangbin Thermal Power Co., Ltd., Nanjing Nanrui Relay Electric Co., Ltd., Guodian Nanrui Technology Co., Ltd.
Division, Datang Thermal Power Technology Research Institute.
The main drafters of this standard. Chen Yanyun, Sheng Mingjun, Dai Shenhua, Shi Yang, Wu Long, Cao Zhiwei, Wang Dongyang, Zhang Jianzhong, Cai Wanli,
Jiang Jianming, Wu Kuayu, Zhong Lei, Guo Laijia, Xiong Hongtao, Wang Rui, Tang Wei, Shi Xiangjian, Hu Gang, Tian Longgang, 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).
Operating Regulations of Gas Turbine Generator Static Frequency Conversion Starting System
1 Scope
This standard specifies the operating conditions, operation, operation monitoring and inspection, operation and maintenance of the gas turbine generator static frequency conversion start system.
This standard applies to static frequency conversion starting systems of gas turbine generator sets.
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 document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 3797 electrical control equipment
GB/T 15135 Gas Turbine Vocabulary
DL/T 572 Power Transformer Operation Regulations
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 set 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.
3.6
Normal starting
The static variable frequency start system drives the gas turbine generator set from the cranking speed to the self-sustained speed and then exits the working process.
3.7
Crank starting
When the gas turbine generator set is inspected, washed, and purged, the static frequency conversion starting system drives the gas turbine generator set from the cranking speed
To purge speed, exit the working process after checking, washing and purging are completed.
3.8
Static frequency converter standby static frequency converter standby
Refers to the static variable frequency start system in the "input circuit breaker disconnected, variable frequency unit thyristor turned off, trigger pulse blocking, output switch
Auxiliary equipment such as disconnection and cooling unit outage", a state in which it cannot run immediately upon receiving a start command.
3.9
Static frequency converter hot standby
Refers to the static variable frequency start system in the "input circuit breaker disconnected, variable frequency unit thyristor turned off, trigger pulse blocking, output switch
Auxiliary equipment such as disconnection and cooling unit is running", the state can be run as soon as a start command is received.
4 General
4.1 Each power plant (station) shall, according to the performance and characteristics of the static variable frequency starting system adopted, formulate its own static variable frequency starting system
System operation procedures and static frequency conversion start system input/exit, isolation/recovery operation procedures.
4.2 The operating personnel are responsible for the operation of the static frequency conversion starting system, and conduct regular inspections and inspections of the static frequency conversion starting system equipment under their jurisdiction.
Check if any abnormalities or failures are found, deal with them in time.
4.3 The operating personnel should timely understand and grasp the technical changes of the equipment, and timely modify the operating procedures and related
Operating procedures.
4.4 There should be detailed records of operations such as input/exit, isolation/recovery, etc. of the static frequency conversion starting system.
5 Operating conditions
5.1 Operating environment
According to the provisions of GB/T 3797, the operating environment of the static variable frequency starting system should meet.
a) The ambient air temperature does not exceed 40℃, and the average temperature within 24h does not exceed 35℃. The lower limit of ambient air temperature is 5℃;
b) The relative humidity of the air when the maximum temperature is 40℃ shall not exceed 50%. Allows a larger relative humidity at a lower temperature, for example
For example, the relative humidity is 90% at 20℃, but the degree of condensation should be controlled;
c) There should be no explosion hazard, no gases and dust that corrode metals and damage insulation;
d) In areas with an altitude higher than.2000m, considering the reduction of dielectric strength and the weakening of air cooling effect, the operating environment is determined by the user.
Environment requirements.
5.2 Main technical documents
The main technical documents include.
a) The technical specifications, operating instructions, user manuals of the static frequency conversion starting system and its equipment (see Appendix A and Appendix B for details),
Operation and maintenance procedures, as-built drawings, test reports and parameter setting calculations, etc.;
b) Related technical parameters of gas turbine generator set and excitation system;
c) User application flow diagram and final software description text;
d) Other technical documents provided by the manufacturer.
5.3 Excitation system
The excitation system should be able to operate reliably according to the design requirements, should be able to receive the control commands issued by the static frequency conversion starting system, and respond quickly.
5.4 Relay protection
During the static frequency conversion start of the gas turbine generator, the main protection should be switched on and off according to the requirements of Table 1, where "√" means protection input, "×"
It means protected withdrawal, "/" means that this standard does not require it.
6 Operation
6.1 Check before putting the static frequency conversion starting system into operation
6.1.1 It should be confirmed that relevant technical documents and spare parts are available before the first commissioning.
6.1.2 The equipment meets the specified performance and quality requirements after overhaul and debugging.
6.1.3 The signs of the equipment are complete, correct and clear, the switches, connecting pieces, and fuses are intact, and the wiring is correct.
6.1.4 All required power supplies are normal and reliable and can be put into operation as required.
6.1.5 All the protections of the static frequency conversion start system are normally put in, the outlet pressure plate is correctly put in and out, and the protection control panel has no alarm signal and no operation
The alarm signal is blocked.
6.1.6 The cooling system is in operation.
6.1.7 The temporary isolation measures of the static frequency conversion starting system have been lifted, all grounding wires and short-circuit wires on the electrical circuit have been removed, and all
The grounding switch has been opened, and the input circuit breaker and output switch are in the working position and in the off position.
6.1.8 The neutral grounding switch of the generator is in the off position.
6.1.9 The parameter setting and function setting of the static variable frequency starting system meet the unit starting requirements.
6.1.10 On-site safety facilities are complete and meet the conditions for safe operation.
6.1.11 The site environment meets the requirements for safe operation.
6.2 Normal operation of the static variable frequency start system
6.2.1 The operating principles for normal operation are as follows.
a) In the normal startup or high-disk startup mode of the unit, the static variable frequency startup system is in hot standby mode, select the "remote automatic" mode
Start the unit;
b) The static frequency conversion starting system is started for the first time after new installation or overhaul. It is advisable to adopt the “on-site manual” method to carry out the operation at different speeds.
debugging.
6.2.2 The operation steps of remote automatic start mode are as follows.
a) Check that the static frequency conversion starting system meets the remote automatic starting conditions, and the control mode is in "remote automatic";
b) Check that the input circuit breaker and output switch of the static frequency conversion starting system are in the working position, and the control mode is in "remote";
c) Select the corresponding static variable frequency start system through the gas turbine control system, and issue the unit start command;
d) The monitoring static frequency conversion starting system operates normally according to the automatic process;
e) According to the start-up process, monitor whether the unit speed reaches the predetermined value;
f) After the static frequency conversion start system is started and exited, check that the input circuit breaker and output switch of the static frequency conversion start system are in
Disconnect position, monitor the static frequency conversion start system to return to the hot standby state.
6.2.3 The operation steps of on-site manual start mode are as follows.
a) Check that the static variable frequency start system meets the local manual start conditions, and the control mode is in "local manual";
b) Check that the input circuit breaker and output switch of the static frequency conversion starting system are in the working position;
c) Start the static variable frequency start system on site;
d) Monitor the output switch and input circuit breaker to close, and check the status of the static frequency conversion starting system;
e) Adjust and monitor the unit speed to a predetermined value according to the start-up process;
f) Exit the static frequency conversion starting system on the spot, disconnect the input circuit breaker and output switch, and monitor the static frequency conversion starting system to run to
Default state.
6.3 Isolation/recovery operation of static frequency conversion starting system
6.3.1 The operating principles of isolation/recovery are as follows.
a) The static frequency conversion starting system is in the cold standby state before isolation/recovery operation can be performed;
b) The maintenance and overhaul of the static frequency conversion starting system should be installed in accordance with the product maintenance requirements with grounding wires and short-circuit wires, and no electrical isolation
In the case of failure, maintenance and repair of the power unit is prohibited.
6.3.2 The isolation operation steps are as follows.
a) Confirm that the static variable frequency start system is in cold standby state;
b) The control mode of the input circuit breaker and output switch of the static frequency conversion starting system is placed in the "on-site" state;
c) The input circuit breaker of the static frequency conversion starting system is set to the inspection position;
d) The output switch of the static frequency conversion starting system is set to the inspection position;
e) Disconnect the control power supply and operation power supply of the input circuit breaker and output switch;
f) Disconnect the secondary side switch of the voltage transformer;
g) After verifying that there is no electricity, close the corresponding grounding switch or install a grounding wire.
6.3.3 The recovery steps are as follows.
a) Open the corresponding grounding switch and remove the grounding wire;
b) Close the secondary side switch of the voltage transformer;
c) Set the output switch to the working position, and close the control power and operating power of the output switch;
d) Set the input circuit breaker to the working position, and close the input circuit breaker control power and operating power;
e) Check that the static frequency conversion starting system is in cold standby state.
7 Operation monitoring and inspection
7.1 Operation monitoring
7.1.1 Operation status monitoring shall include.
a) The status of the input circuit breaker and output switch;
b) Alarm signal.
7.1.2 Monitoring of operating parameters shall include.
a) Input voltage, input current, output voltage, output current;
b) Output frequency, given frequency;
c) Transformer/reactor winding temperature;
d) The temperature of the cooling medium.
7.2 Run inspection
7.2.1 The operation inspection should be carried out according to the stipulated time, content and route. If the equipment is found to be abnormal, it should be recorded in time and dealt with according to relevant requirements.
7.2.2 The inspection should be combined with the current operating conditions to determine the key inspection locations and inspection contents.
7.2.3 Inspections should be strengthened in the following situations.
a) The equipment is newly put into operation or resumed operation after overhaul;
b) Abnormal changes in operating equipment parameters;
c) An abnormality is found after the static frequency conversion starting system fails to trip or during operation.
7.2.4 During the inspection process, the following aspects shall be inspected.
7.2.4.1 Environmental inspection includes.
a) Whether the temperature and humidity are normal;
b) Whether the air dust is too large;
c) Whether there are harmful gases and smoke.
7.2.4.2 The inspection of the control cabinet includes.
a) Whether the cabinet door is closed and locked;
b) Whether there is abnormal noise, discharge sound, burnt smell, etc.;
c) Whether the meters, signals and indicator lights are normal;
d) Whether the power supply is turned on and the control method is correct;
e) Whether the control and protection device has abnormal alarm;
f) Whether the air inlet filter and air outlet are blocked.
7.2.4.3 The patrol inspection of rectifier cabinet, inverter cabinet and DC reactor cabinet includes.
a) Whether the cabinet door is closed and locked;
b) Whether there is abnormal noise, abnormal vibration, discharge sound, burnt smell, etc.;
c) When the cooling system is air-cooled, check whether the fan is operating normally and whether the air inlet filter and air outlet are blocked;
d) When the cooling system adopts water cooling, check whether the temperature, water pressure, flow rate and conductivity of the deionized water of the cooling system meet the operating requirements.
7.2.4.4 The patrol inspection of the isolation transformer shall be carried out in accordance with the relevant regulations of DL/T 572.
7.3 Operation and maintenance
7.3.1 The dust accumulation on the filter screen of the static frequency conversion starting system should be removed regularly, and the filter screen should be replaced if necessary.
7.3.2 When water cooling is used, the cooling water temperature, pressure, conductivity, and flow rate should be regularly monitored to meet the specified requirements.
7.3.3 During the shutdown period of the static frequency conversion starting system, regular inspections shall be carried out as required.
7.4 Notes
7.4.1 During operation, the interlocking and opening of the cabinet door shall not be released at will.
7.4.2 Except for emergency faults, the input circuit breaker shall not be disconnected to stop the static variable frequency start system during operation.
7.4.3 Regularly analyze the operation of the static frequency conversion start system, including the start success rate, trend changes of operating parameters and cause analysis.
8 Operation abnormality and troubleshooting principles
When the static frequency conversion starting system sends out an abnormal alarm or fault signal, the operator should judge the signal type and take corresponding measures in time.
If it is a fault that can cause damage to the generator and the static variable frequency starting system, measures should be taken to stop the static variable frequency starting system. If it is different
Always alarm, the static frequency conversion starting system can continue to run, the fault content and cause should be found out, and the static frequency conversion starting system should be checked after the stop
deal with.
When any of the following situations occurs, the static frequency conversion starting system should immediately exit operation.
a) The temperature of the device or equipment has risen significantly, and after measures are taken, it still exceeds the allowable value specified in the design;
b) Overheating of circuit breaker contacts, diverter switch contacts and primary circuit connections exceeds the allowable value specified by the manufacturer;
c) The cooling system fails and cannot be recovered in a short time.
Appendix A
(Informative appendix)
Main equipment of static frequency conversion starting system
The main equipment of the static frequency conversion starting system includes.
a) Each panel screen cabinet of the static frequency conversion starting system;
b) Transformers, mutual inductors, reactors, circuit breakers, and transfer switches;
c) Power devices;
d) AC and DC busbars or cables;
e) Cooling system;
f) Connect the relevant secondary circuit of the static frequency conversion starting system;
g) Various AC and DC power supplies used in static variable frequency starting systems;
h) Various measuring instruments and indicator lights of the static frequency conversion starting system.
Appendix B
(Informative appendix)
Spare parts and special tools for static frequency conversion starting system
In accordance with the actual situation of the unit and the principle of ensuring the long-term safe and stable operation of the static frequency conversion starting system, a reserve of spare parts
quota. The quota should not be less than 10%. The spare parts of the static frequency conversion starting system mainly include.
a) Power devices, fast fuses, pulse transformer components, and resistance-capacitance protection components in power converters;
b) The main functional module board and power module of the control protection unit;
c) Software CD related to the control and protection unit;
d) The wearing parts of the cooling system;
e) Opening and closing coils of circuit breakers and transfer switches, main and auxiliary contacts, etc.;
f) Special spare parts provided by the manufacturer of the static frequency conversion starting system;
g) Various debugging, simulation test equipment and special tools for static frequency conversion starting system.
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