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DL/T 1107-2019: Basic specifications of automatic components for hydropower plant
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Basic specifications of automatic components for hydropower plant
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Basic data | Standard ID | DL/T 1107-2019 (DL/T1107-2019) | | Description (Translated English) | Basic specifications of automatic components for hydropower plant | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | P59 | | Classification of International Standard | 27.140 | | Word Count Estimation | 15,143 | | Date of Issue | 2019 | | Date of Implementation | 2019-10-01 | | Issuing agency(ies) | National Energy Administration | DL/T 1107-2019: Basic specifications of automatic components for hydropower plant---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.
Basic specifications of automatic components for hydropower plant
ICS 27.140
P 59
People's Republic of China Electric Power Industry Standard
Replace DL/T 1107-2009
Basic technical conditions for automation components in hydropower plants
Refractory materials for boilers in thermal power plants
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 Technical requirements...3
5 Test...8
6 Technical documents...9
7 Marking, packaging, transportation, storage...9
Foreword
This standard is based on the rules given in GB/T 1.1-2009 "Guidelines for Standardization Part 1.Standard Structure and Compilation".
DL/T 1107-2009 "Basic Technical Conditions of Automation Components for Hydropower Plants" shall be revised.
Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
The main contents of this standard revision to DL/T 1107-2009 include.
--Delete or modify the content of the scope.
--Delete, modify and increase the content of normative references.
--Deleted, modified and added terms and definitions.
--Deleted, modified and perfected the content of the relevant general provisions in the technical requirements.
--Infrared temperature measurement and detection instruments, pressure level gauges, float level gauges, ultrasonic level gauges, radar level gauges, and
Proximity switch, swing and key phase sensor, vibration sensor, magnetic flux density sensor, partial discharge sensor, shaft current monitoring
Technical requirements for devices and load monitoring components.
--Repair the technical requirements of temperature, pressure, liquid level, displacement, vibration and other monitoring components, adjustment components, and actuators
Revised and improved, and added standard references for corresponding clauses.
- Delete the content of corresponding clauses such as flow monitoring element, speed monitoring element and automatic water filter, and add standard reference.
--Chapter 5 "Quality Inspection" was revised to "Test". Delete "test method" in this chapter. Add "field test" and
"experiment report". And modify and improve the content of the chapter.
--Chapter 6 "Handover and Acceptance" was revised to "Technical Documents". Delete "6.1.1 and 6.1.3 Clause" in this chapter
-Delete the contents of "Transport" and "Storage" in Chapter 7 of the original standard, and add standard reference.
--Delete Appendix A and Appendix B of the original standard.
This standard was proposed by the China Electricity Council.
This standard is under the jurisdiction of the Electric Power Industry Hydropower Station Automation Standardization Technical Committee.
Drafting organizations of this standard. China Institute of Water Resources and Hydropower Research, Tianjin Water Conservancy and Electric Power Machinery Research Institute, China Three Gorges Corporation,
Chongqing Datang International Pengshui Hydropower Development Co., Ltd., Datang Guangxi Branch Guangxi Pingban Hydropower Development Co., Ltd., Shenzhen Ruidesen Industry
Industry Automation Equipment Co., Ltd.
The main drafters of this standard. Guo Jiang, Wang Xiaochen, Qiao Weibin, Jia Yanbo, Zhang Runshi, Kang Yonglin, Yu Zhiqiang, Yang Xiaosong, Li Zheng
Jia, Lai Fabin, Kong Dening, Ge Kai, Wei Jiwen, Qu Dong, Wang Yongmei
The opinions or suggestions during the implementation of this standard are fed back to the Standardization Center of China Electricity Council (Baiguang Road, Xuanwu District, Beijing)
Er Tiao No. 1, 100761).
The previous versions of the standard replaced by this standard are.
--DL/T 1107-2009.
Basic technical conditions for automation components in hydropower plants
1 Scope
This standard specifies the basic technical requirements for the structure, function, and performance of automation components (devices) in hydropower plants, and also specifies the corresponding test
Related requirements for inspection and marking, packaging, transportation and storage.
This standard is applicable to the configuration selection design and production of the units and auxiliary equipment of hydropower plants and the automation components used by the public equipment of the whole plant.
Product design and manufacturing.
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.
The definition and selection of GB/T 1048 pipe component nominal pressure
GB/T 4798.1 Environmental conditions for application of electrical and electronic products Part 1.Storage
GB/T 4798.2 Environmental conditions for application of electrical and electronic products Part 2.Transportation
GB/T 5465.2 Graphical symbols for electrical equipment Part 2.Graphical symbols
GB/T 6075.5 Measuring and evaluating mechanical vibration of machines on non-rotating parts Part 5 Hydroelectric power plants and pumping stations
GB/T 7551 load cell
GB/T 11348.5 Measurement and Evaluation of Radial Vibration of Rotating Machinery Shaft Part 5 Hydroelectric Power Plant and Pumping Station Unit
GB/T 12244 General requirements for pressure reducing valves
GB/T 12245 Pressure reducing valve performance test method
GB/T 12246 Pilot-operated pressure reducing valve
GB/T 13384 General technical conditions for packaging of mechanical and electrical products
GB/T 13927 Industrial valve pressure test
GB/T 14048.1 Low Voltage Switchgear and Control Equipment Part 1.General
GB/T 15479 Technical requirements and tests for insulation resistance and insulation strength of industrial automation instruments
GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test
GB/T 24923 Technical requirements for ordinary valve electric devices
DL/T 619 Hydropower plant automation components (devices) and their system operation, maintenance and overhaul test procedures
DL/T 664 Infrared Diagnosis Application Specification
DL/T 1197 Technical conditions for online monitoring system of hydro-generator unit status
DL/T Hydropower Plant Flow Measurement Device Technical Conditions
DL/T 1859 Technical conditions of rotational speed measuring device for hydropower plant
DL/T 1858 Technical conditions of automatic water filter in hydropower plant
JB/T 7352 Solenoid valve for industrial process control system
Technical conditions of JB/T 7376 pneumatic air pressure reducing valve
JB/T 10373 hydraulic electro-hydraulic directional valve and hydraulic directional valve
JB/T 10674 hydraulic control valve
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Automatic components (devices)
It refers to a device with a compact structure and a single function that can complete the functions of information acquisition, conversion, display, transmission, processing and execution.
Mainly include sensors, annunciators, and monitors for non-electric monitoring of temperature, pressure, liquid level, flow, speed, vibration, displacement, etc.
And monitoring devices, as well as automatic pressure reducing valves and filters used to adjust the parameters of the working medium, and the electric
Magnetic valve, electric valve, hydraulic operation valve, etc.
3.2
Transducer/sensor
A device or device that can feel the measured and convert it into a usable output signal according to a certain rule, usually composed of sensitive components and conversion components
composition.
Note 1.Sensing element refers to the part of the sensor that can directly feel or respond to the measurement.
Note 2.Transducing element (transducing element) refers to the sensor that can convert the sensed or response of the sensitive element into
The part of the electrical signal suitable for transmission or measurement.
Note 3.When the output is a specified standard signal, it is called a transmitter (transmitter).
Note 4.The slash symbol "/" in English words means that the words before and after it are common (the same below).
3.3
Annunciator
Refers to a device that specifically monitors whether the measured non-electricity change exceeds the limit. When the measured non-electricity change rises or falls to the set value, a switch is issued
3.4
Monitoring instrument
It refers to a long-term online running instrument that collects, processes, displays, and outputs signals from sensor signals. Signal output includes switch
Quantity, analog quantity and digital communication.
3.5
Monitoring device
Refers to measuring equipment composed of sensors and monitors.
3.6
Accuracy (precision, precision) accuracy
The degree of agreement between the measurement result and the measured true value.
3.7
Repeatability error
Refers to when the annunciator changes up or down under the specified working conditions, and the same signal point moves continuously in the same direction.
Inconsistency of monitored quantities.
3.8
Sensitivity
The ratio of the change of the output of the instrument to the corresponding change of the measured value.
3.9
Linearity
The degree to which the calibration curve is consistent with a specified straight line.
3.10
Return coefficient
It refers to the return value of the same contact of the annunciator divided by the action value.
3.11
Resolution
It refers to the minimum input change value that can produce an observable output change within the measurement range of the instrument.
3.12
Frequency response
It means that within the specified frequency range of the measured frequency, for the measured sinusoidal change applied to the sensor, the output and the measured vibration
The amplitude ratio and the difference between the output and the measured value change with frequency.
Note. The frequency response should be based on a specified measured frequency range and a specified measured frequency..
3.13
Response time
It refers to the time interval from the initial value to the final stable value when the meter inputs a step value.
3.14
Stability
Under specified working conditions, the ability of instrument performance characteristics to remain unchanged within a specified time.
3.15
Liquid level change rate
Refers to the value of liquid level change per unit time.
3.16
Comprehensive error
Equal to the square root of the sum of the squares of the basic errors of the sensors and monitors that make up the device.
3.17
Measurement range
The interval determined by the two measured values within the allowable error limit.
Note. The highest and lowest values to be measured respectively become the "upper limit" and "lower limit" of the measurement range.
3.18
Span
The algebraic difference between the upper and lower limits of the measurement range.
4 Technical requirements
4.1 General regulations
4.1.1 The working conditions are as follows.
a) Altitude. ≤2000m.
b) Ambient temperature. 5℃～40℃.
c) Environmental relative humidity. ≤95%.
d) Environmental vibration conditions. 0.5Hz～8Hz displacement amplitude not more than 1.5mm; 8Hz～150Hz acceleration not more than 5m/s2.
e) Ambient magnetic field strength. ≤800A/m.
4.1.2 Components working in oil, gas and water systems should be able to work for a long time under the following medium conditions.
a) The water content of the oil is not more than 0.1%, and the particle size content of the oil is ≤ NAS9 level.
b) The dust content of the compressed air is not more than 0.1g/m3, the particle size is not more than 50μm, and the dew point is 10°C lower than the working environment temperature.
c) Water sand content (particle size not greater than 0.5mm) not greater than 30g/L, with a small amount of floating matter not greater than 5mm (filtered water from the main water supply)
The device and the main valve should adapt to worse medium conditions).
4.1.3 The components should be able to work normally under the following power supply conditions.
a) For DC rated voltages of 48V and below, the voltage variation range is 20% to -20%, and the ripple factor is less than 5%.
b) For DC rated voltages of 110V and 220V, the voltage variation range is 10% to -15%, and the ripple factor is less than 5%.
c) For AC rated voltage 220V, the voltage variation range is 10%～-15%, and the frequency is 50Hz±2.5Hz.
4.1.4 The monitoring components and solenoid valve should adopt DC power supply.
4.1.5 The components should have power supply, grounding and warning signs. The signs should meet the requirements of GB/T 5465.2.
4.1.6 The pressure-bearing parts of hydraulic (pneumatic) components shall be tested with 1.5 times the nominal pressure PN specified in GB/T 1048 as the test pressure.
In the compressive strength test, no abnormal phenomena such as leakage and cracks are allowed within the specified duration.
4.1.7 After the liquid (pneumatic) pressure components are assembled, a tightness test should be carried out, and no external leakage is allowed in each connecting part and the packing part. electric,
The leakage rate of the internal seal of hydraulic and hydraulic operation valves should meet the requirements of GB/T 13927.The internal seals of solenoid directional valves and solenoid air valves
The leakage rate should meet the requirements of JB/T 7352.
4.1.8 The main quality characteristic parameters of the monitoring components shall include.
a) Accuracy, linearity, sensitivity and resolution of static performance.
b) Frequency response of dynamic performance (vibration, water pressure pulsation monitoring element), response time (temperature, flow, pressure pulsation monitoring
element).
c) Stability.
4.1.9 The accuracy of the monitoring element is evaluated based on its basic error. Under actual test conditions, the working error is greater than the basic error specified by the product
In the event of a difference, if there are additional errors in the product regulations, the additional errors should be calculated based on the actual environment exceeding the reference condition value, and should be corrected according to the following formula
After evaluation.
4.1.10 The electrical performance requirements of the monitoring components are as follows.
The circuit of the instrument should be insulated from the earth, and the insulation resistance of the sensor should not be less than 5 MΩ, and the insulation resistance of the monitor is not grounded
Should not be less than 10 MΩ.
4.1.11 The requirements of the monitor are as follows.
a) The monitor display should be clear.
b) The switch signal should be a snap-action switch.
c) For analog signal, DC4mA～20mA should be selected, and the maximum load resistance is >550Ω.
d) The digital communication interface should be RS232 or RS485.
e) With power-off memory and automatic parameter protection functions.
f) The monitor should have a self-checking function, and the output signal should not cause any problems at the moment of power-on and power-off, and when the instrument circuit (including sensors) fails
Misoperation.
g) The dielectric strength should meet the requirements of GB/T 15479.
h) The monitor should be able to withstand the radiated electromagnetic field interference from the power supply, signal source, control port and the surrounding environment, and the equipment itself
The electromagnetic interference should be reduced to a minimum, and it can pass the second level electrical fast transient test specified in GB/T 17626.4.
4.2 Temperature monitoring components
4.2.1 The temperature measuring resistor should be a product with the graduation number Pt100, and meet the following requirements.
a) The accuracy level should be A level.
b) The three-wire system should be used for lead-out.
c) Double resistance structure should be adopted, and the two resistance lead wires should be led out separately, and the lead wires should be able to resist electromagnetic interference.
d) The lead wire of the temperature measuring resistor of the bearing bush should be led out of the oil tank without a joint, which has oil-proof performance. The lead wire should be a mesh shielded cable.
e) The temperature measuring element should have good thermal conductivity, and the thermal response time of the probe should be ≤60s.
f) The temperature measuring resistor and lead wires should be able to ensure their insulation performance at high temperatures, and the maximum operating temperature for the stator position should be ≥150℃.
The maximum operating temperature for other locations should be ≥100℃.
4.2.2 The requirements for digital temperature monitors are as follows.
a) There should be at least two pairs of adjustable switch output signals.
b) There should be a pair of monitor failure alarm points output.
c) Repeated action error of alarm point. ±1.0% FS.
d) Basic error. ±0.5% FS.
4.2.3 The requirements of the multi-channel temperature inspection instrument are as follows.
a) The upper and lower limit alarms can be unified.
b) There is a disconnection alarm for the input circuit.
c) Automatic inspection and manual inspection can be switched freely.
d) There should be a digital communication interface.
e) The display time can be adjusted.
f) The repeated action error of the alarm point is not more than 1.5 times the basic error.
g) Basic error. ±0.5% FS.
4.2.4 Infrared temperature measurement and detection equipment should meet the requirements of DL/T 664.
4.3 Pressure monitoring components
4.3.1 The pressure (differential pressure) switch requirements are as follows.
a) The switch contact should be a snap-action micro switch.
b) The set point should be able to be set and locked.
c) The return coefficient should be between 0.9 and 1.1, and the difference between the reset value and the set value should not exceed 10% of the range.
d) Repeated action error. ±1.5% FS.
f) Action life. >10 0000 times.
4.3.2 The electrical contact pressure gauge requirements are as follows.
a) It should be filled with liquid and damped.
b) For contacts that send signals when rising, the return coefficient should not be less than 0.9; for contacts that send signals when falling, the return coefficient should not
It is greater than 1.1, and the difference between the reset value and the set value should not be greater than 10% of the range.
c) Repeated action error of the same contact. ±1.5% FS.
4.3.3 Pressure (differential pressure) sensor requirements are as follows.
a) The instantaneous overpressure resistance should be more than 2.5 times the rated pressure, and a damper should be equipped.
b) The differential pressure sensor should be equipped with a three-valve group.
c) Accuracy. ±0.25%FS.
4.3.4 The requirements for pressure pulsation sensors are as follows.
a) The response frequency of the sensor is not less than 5 times the measured frequency.
b) The maximum working pressure should not be greater than 1/2 of the full scale.
4.4 Flow monitoring components
It shall meet the requirements of DL/T "Technical Conditions of Flow Measurement Devices for Hydropower Plants".
4.5 Liquid level monitoring components
4.5.1 The mean time between failures of the liquid level monitoring element is 25,000 hours.
4.5.2 The requirements for mechanical level indicator are as follows.
a) An annunciator with self-holding function. After the liquid level rises and falls to a certain position, the signal remains unchanged when the liquid level returns.
b) The oil level of the pressure oil tank should be indirectly indicated by a magnetic flap or a magnetic float, and the deviation. ±5mm.
c) Repeated action error. ±5mm.
4.5.3 The requirements for pressure level gauges are as follows.
a) Resolution. 0.2cm.
b) Allowable error. ±1cm when the measuring range is ≤10m; ±0.1%FS when the measuring range is >10m.
4.5.4 The requirements for float level gauges are as follows.
a) Resolution. 1cm.
b) The liquid level change rate is not less than 40cm/min.
c) Allowable error. ±2cm when the measuring range is ≤10m; ±0.2%FS when the measuring range is >10m.
d) The top-mounted float level gauge is used to measure the upper guide, lower guide, thrust and water guide oil level, and anti-wave tube should be equipped.
4.5.5 The requirements for ultrasonic level gauges are as follows.
a) Resolution. 0.5cm when the measuring range is ≤40m; 1cm when the measuring range is >40m.
b) Allowable error. when the measuring range is ≤40m, ±3cm; when the measuring range is >40m, ±0.3%FS.
4.5.6 The requirements for radar level gauges are as follows.
a) Resolution. ±5mm.
b) Allowable error. ±1cm.
c) Mean time between failures. 50000 hours.
4.5.7 The requirements for liquid level monitoring devices are as follows.
a) With more than 2 pairs of adjustable switch signal outputs and at least 1 pair of analog output.
b) There is a liquid level value display.
c) There is a digital communication interface.
d) Comprehensive error. ±1.5% FS.
4.6 Displacement monitoring components
4.6.1 The travel switch requirements are as follows.
a) Water-proof structure should be adopted, and quick-acting type should be used.
b) For directly driven switches, there should be an overtravel of not less than 2mm after contact action.
c) For directly driven switches, the required operating force should not affect the actions of the monitored parts.
d) The normally open and normally closed contacts of the magnetic memory switch should be clearly marked.
e) The life of the micro switch should be no less than 1×106 times when the on-off is not less than 0.15A DC inductive load.
4.6.2 The requirements for displacement sensors are as follows.
a) The rope type displacement sensor should adopt a multi-turn absolute encoder. If an incremental encoder is used, a power failure should be provided in the secondary instrument.
memory function.
b) The angular displacement sensor should be a single-turn absolute encoder.
c) The signal output line of the magnetostrictive displacement sensor should be shielded.
d) Basic error. ±0.5% FS.
4.6.3 The requirements of the monitoring device for the axial displacement of the main shaft are as follows.
a) It shall have adjustable alarm point output with lock.
b) Resolution. 0.1mm.
c) Comprehensive error. ±1mm.
4.6.4 The requirements for proximity switches are as follows.
a) Inductive proximity switches (also called eddy current proximity switches) and capacitive proximity switches with lower environmental requirements should be selected;
The photoelectric proximity switch can be used in the environment with good environmental conditions and no dust pollution.
b) It should have DC three-wire output.
c) The lead wires should be shielded.
4.7 Speed monitoring components
4.7.1 The rotational speed measuring device should comply with DL/T 1859.
4.7.2 The requirements for mechanical hydraulic over-speed protection devices are as follows.
a) Composed of mounting ring, centrifugal fly pendulum, release, reversing valve and accessories.
b) Action repeat error should not exceed ±3% of rated speed.
c) There should be no less than 2 pairs of alarm point outputs.
d) The reversing valve should be self-maintained and reset manually.
e) The over-speed protection action value of the unit should be set before leaving the factory.
4.8 Vibration monitoring components
4.8.1 Swing and key phase sensors should comply with DL/T 1197.
4.8.2 The vibration sensor should comply with DL/T 1197.
4.8.3 Function of vibration monitoring device.
a) Display the amplitude of frequency vibration.
b) The amplitude should adopt the peak-peak value of the vibration displacement, in mm or um.
c) Two-level values of over-limit alarm and shutdown can be set, the alarm state should be displayed, and the corresponding relay output should be provided.
d) Over-limit alarm and shutdown signals have a delay function, the delay time can be set, and the signal can be locked or not locked.
e) There should be no false alarms during normal startup and shutdown of the unit.
f) There should be analog output.
g) It should have a data communication interface.
4.8.4 The main technical requirements of the vibration monitoring device are.
a) The frequency range and range should meet the requirements specified in GB/T 6075.5 and GB/T 11348.5.
b) Comprehensive error. ±2.5% FS.
c) The repeated action error of the alarm point is not more than ±1.5% of the set value.
d) It should have the ability to resist 0.01T ...
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