DL/T 793.3-2019 English PDFUS$559.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. DL/T 793.3-2019: (Power plant reliability evaluation procedures - Part 3: Hydropower units) Status: Valid
Basic dataStandard ID: DL/T 793.3-2019 (DL/T793.3-2019)Description (Translated English): (Power plant reliability evaluation procedures - Part 3: Hydropower units) Sector / Industry: Electricity & Power Industry Standard (Recommended) Classification of Chinese Standard: F23 Word Count Estimation: 24,255 Date of Issue: 2019-06-04 Date of Implementation: 2019-10-01 Regulation (derived from): Natural Resources Department Announcement No. 7 of 2019 Issuing agency(ies): National Energy Administration DL/T 793.3-2019: (Power plant reliability evaluation procedures - Part 3: Hydropower units)---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.Reliability evaluation code for generating equipment-Part 3.Hydro-power units DL/T 996-2019 ICS 27.140 F 23 People's Republic of China Electric Power Industry Standard Reliability Evaluation Regulation of Power Generation Equipment Part 3.Hydropower unit 2019-06-04 released 2019-10-01 implementation Issued by National Energy Administration Table of contentsForeword...III 1 Scope...1 2 Terms and definitions...1 3 Unit status division and statistical time...5 4 Evaluation Index...5 5 Statistical Evaluation...10 6 Filing requirements...10 Appendix A (informative appendix) Chinese and English comparison of the reliability status of hydropower units...17 Appendix B (informative appendix) Chinese and English comparison of reliability index of hydropower unit...18 References...20ForewordThis standard is in accordance with GB/T 1.1-2009 "Guidelines for Standardization Part 1.Standard Structure and Compilation" Drafting of rules. This standard specifies the corresponding technical requirements and methods for the reliability statistics, analysis and evaluation of conventional hydropower units. DL/T 793 The "Regulations for Reliability Evaluation of Power Generation Equipment" is a series of standards, divided into seven parts, of which the published standards are. --Part 1.General rules; --Part 2.Coal-fired units; --Part 5.Gas turbine generator set. This standard is part 3 of DL/T 793. This standard is compiled in accordance with the relevant content of the "Reliability Evaluation Regulations for Power Generation Equipment Part 1.General Rules". Therefore, in this For general terms and evaluation indicators that are not defined or specified in the standard, and indicators that are not in Appendix A and Appendix B, please refer to Read "Reliability Evaluation Regulations for Power Generation Equipment Part 1.General Rules". This standard was proposed by the China Electricity Council. This standard is under the jurisdiction of the Power Industry Reliability Management Standardization Technical Committee. Drafting organizations of this standard. China Electricity Council, China Yangtze Power Co., Ltd., Huaneng Lancang River Hydropower Company limited by shares The main drafters of this standard. Xue Fuwen, Xie Qiuhua, Zhou Hong, Li Jianfeng, Yang Haixiang, Liu Haibo, Fu Lihua, Dai Feng Ming, Li Lihua, Xie Gang, Tang Xufeng, Weng Jianhua, Huang Jun The opinions or suggestions during the implementation of this standard are fed back to the Standardization Management Center of the China Electricity Council (Baiguang Road) Er Tiao No. 1, 100761). Reliability Evaluation Regulations of Power Generation Equipment Part 3.Hydropower Unit1 ScopeThis standard specifies statistical methods and evaluation indicators for the reliability of power generation equipment in hydropower stations. This standard applies to hydroelectric power generation equipment of hydropower enterprises, except for pumped storage units.2 Terms and definitions2.1 Reliability for generating equipment Refers to the ability of a device to complete a specified function under specified conditions and within a specified time interval. 2.2 Reliable capacity (DC) dependable capacity The maximum capacity that a generator set can reach in a given period due to external environmental constraints such as water head and water volume. 2.3 Available capacity (AC) available capacity The maximum capacity that the generator set can reach after considering the various restrictions of the equipment. 2.4 In use (ACT) active The equipment is in a state to be statistically evaluated. The use status is divided into available and unavailable. 2.4.1 Available (A) available The equipment is in a state capable of performing predetermined functions, regardless of whether it is running or not, and regardless of how much power it can provide. Available Status includes running and standby. a) Run (S) in service For equipment, it means that the generator or tuned camera is electrically connected to the power system for work (including trial operation), which can be full Output operation, planned or unplanned operation with reduced output; for auxiliary equipment, it means working for the unit. b) Reserve (R) reserve shutdown The device is available, but not running. c) Unit reduced output operation (IUND) in-service unit derated The unit cannot reach the state of reliable capacity operation (excluding normal output adjustment according to the load curve). Reduced output of the unit can be divided into operation For planned and unplanned reduction operations. 1) In-service planned derated operation (IPD) The unit was operated as planned with a reduced output during the set time period. 2) In-service unplanned derated operation (IUD) Unpredictable unit operation with reduced output. 2.4.2 Unavailable (U) unavailable The equipment is in a state of being unable to operate or unable to stand by for whatever reason. Unavailable status is divided into planned outage and unplanned Out of service. a) Planned outage (PO) planned outage The unit is out of operation according to the pre-planned state due to inspection, test or overhaul. The planned outage includes Class A planned maintenance outage (POA), Class B planned outage for maintenance (POB), Class C planned outage for maintenance (POC) and Class D planned outage for maintenance (POD). b) Unplanned outage (UO) 2.5 Inactive (IACT) inactive In accordance with the relevant national policies, the unit shall be stored out of service or out of service after long-term modification approved by the prescribed department. state. The time when the crew is in the disabled state does not participate in the statistical evaluation. 2.6 Gross maximum capacity (GMC) The maximum capacity that the unit can continuously carry in a given period. Generally, the rated capacity of the unit can be used. 2.7 Gross actual generation (GAG) gross actual generation The actual amount of electricity generated by the unit in a given period. 2.8 Gross maximum generation (GMG) gross maximum generation The amount of electricity generated by the unit continuously operating at the maximum gross capacity during a given period. 2.9 Unit derated capacity (UNDC) unit derated capacity The difference between the available capacity (AC) and the reliable capacity (DC) when the unit is in a reduced output state. 2.10 Probability of starting failure (PS) The probability that the unit cannot provide the load during all or part of the demand period. 2.11 Time term definition 2.11.1 Service hours (SH) service hours The number of hours the device has been in operation. 2.11.2 Reserve hours (RH) reserve shutdown hours The number of hours the device has been in standby state. 2.11.3 2.11.4 Unplanned outage hours (UOH) The number of hours the equipment was in a forced outage (UO1-3) or unplanned maintenance outage state (UO4), of which forced outage hours (FOH) Forced outage hours are divided into the following 3 categories. a) Category 1 unplanned outage hours (UOH1) immediate No1 unplanned outage hours The number of hours that the unit is in Category 1 unplanned outage; b) Type 2 unplanned outage hours (UOH2) delayed No2 unplanned outage hours The number of hours that the unit is in the category 2 unplanned outage state; c) Category 3 unplanned outage hours (UOH3) postponed No3 unplanned outage hours The number of hours the unit was in Category 3 unplanned outage The forced outage hours are expressed as. FOH=UOH1 UOH2 UOH3 (3) Type 4 unplanned outage hours (UOH4) deferred No.4 unplanned outage hours The number of hours that the unit was in Category 4 unplanned outage, including general maintenance outage time (BMOH) and delayed maintenance Repair outage time (EMOH), unplanned outage hours of category 4 (UOH4) are expressed as. 2.11.5 Period hours (PH) period hours The number of calendar hours the device is in use. 2.11.6 Available hours (AH) available hours The number of hours the device is available. Available hours is equal to the sum of operating hours and standby hours, expressed as 2.11.7 Unavailable hours (UH) The number of hours the device has been unavailable. Unavailable hours is equal to the sum of planned and unplanned outage hours or the difference between the hours during the statistical period and the available hours, expressed as 2.11.8 Unit year (UY) The number of hours in the statistical period of one device or the sum of the number of hours in the statistical period of multiple devices divided by the calendar hours of the year, namely For a device 2.11.9 Utilization hours (UTH) The actual gross output of the unit is converted to the number of operating hours when the nameplate capacity (NC) is converted. 2.11.10 Unit derated hours (UNDH) The number of hours that the unit is operating at reduced output, specifically including planned reduced output hours and unplanned reduced output hours. a) planned derated hours (PDH) planned derated hours The number of hours that the unit is in the planned state of reduced output operation. b) Unplanned derated hours (UDH) The number of hours the unit has been in an unplanned reduced output state. 2.11.11 EUNDH equivalent unit derated hours The number of reduced output hours of the unit is converted into the number of outage hours calculated according to the gross maximum capacity (or NC-nameplate capacity). The equivalent outage hours can be calculated according to formula (12).3 Unit status3.1.Refer to Appendix A for the Chinese and English comparison of the status of power generation equipment and statistical time of hydropower stations, and see Figure 1 for the division of power generation unit status. Figure 1 State division diagram of generator set 3.2 The state division of auxiliary equipment is shown in Figure 2. Figure 2 The state division diagram of auxiliary equipment4 Evaluation Index4.1 Single machine evaluation index 4.1.1 Planned Outage Factor (POF) The planned outage coefficient is the percentage of the unit planned outage hours (POH) to the statistical period hours (PH), and its mathematical expression for. 4.1.2 Unplanned Outage Factor (UOF) The unplanned outage coefficient is the ratio of the unit unplanned outage hours (UOH) to the statistical period hours (PH), its mathematical table 4.1.3 Forced outage factor (FOF) The forced outage coefficient is the ratio of the unit's forced outage hours (FOH) to the statistical period hours (PH), and its mathematical expression for. 4.1.4 Availability factor (AF) The available coefficient is the ratio of the unit's available hours (AH) to the statistical period hours (PH). Its mathematical expression is. 100%PH 4.1.5 Operating factor (SF) The operating coefficient is the ratio of operating hours (SH) to statistical period hours (PH). Its mathematical expression is. 100%PH 4.1.6 Unit reduction output factor (UDF) The unit reduced output coefficient is the ratio of the unit reduced output equivalent outage hours (EUNDH) to the statistical period hours (PH). Its mathematical expression is. 4.1.7 Equivalent Availability Factor (EAF) The equivalent available coefficient is the difference between the unit available hours (AH) minus the unit reduced output equivalent outage hours (EUNDH) and the statistical period The percentage of the ratio of the hour (PH), its mathematical expression is. 4.1.8 Gross capacity factor (GCF) The gross capacity coefficient is the percentage of the actual gross power generation (GAG) of the unit and the hour (PH) of the statistical period multiplied by the product of the maximum gross capacity. Its mathematical expression is. 4.1.9 Utilization factor (UTF) The utilization factor is the ratio of unit utilization hours (UTH) to statistical period hours (PH), and its mathematical expression is. 4.1.10 Output coefficient (OF) The output coefficient is the ratio of the actual gross generating capacity (GAG) of the unit and the operating hours (SH) times the gross maximum capacity (GMC) product, or the unit utilization The percentage of the ratio of hours (UTH) to operating hours (SH), and its mathematical expression. 4.1.11 Forced outage rate (FOR) Forced outage rate is the sum of unit forced outage hours (FOH) and unit forced outage hours (FOH) plus operating hours (SH) The ratio percentage, its mathematical expression is. 4.1.12 Unplanned Outage Rate (UOR) Unplanned outage rate is the ratio of the sum of unplanned outage hours (UOH) and unplanned outage hours (UOH) plus operating hours (SH) Value percentage, its mathematical expression is. 4.1.13 Equivalent Forced Outage Rate (EFOR) The equivalent forced outage rate is the sum of the forced outage hours (FOH) plus the reduced output equivalent outage hours (EUNDH) and the forced outage hours Hour (FOH) plus the percentage of the ratio of the sum of running hours, the mathematical expression is. 4.1.14 Occurrence rate of forced outage (FOOR) (times/year) The forced outage occurrence rate is the ratio of the number of forced outages (FOT) to the available hours (AH), and its mathematical expression is. 4.1.15 Exposure Rate (EXR) The exposure rate is the same as the ratio of operating hours (SH) to available hours (AH), and its mathematical expression is. 4.1.16 Mean time between planned outages (MTTPO) (h) The average planned outage interval is the ratio of operating hours (SH) to the number of planned outages (POT), and its mathematical expression is. 4.1.17 Average time between unplanned outages (MTTUO) (h) The average unplanned outage interval is the ratio of operating hours (SH) to the number of unplanned outages (UOT), and its mathematical expression is. 4.1.18 Average planned outage hours (MPOD) (h) Average planned outage hours is the ratio of planned outage hours (POH) to planned outage times (POT), and its mathematical expression is. 4.1.19 Average unplanned outage hours (MUOD) (h) Average unplanned outage hours is the ratio of unplanned outage hours (UOH) to the number of unplanned outages (UOT), and its mathematical expression for. 4.1.20 Average Continuous Available Hours (CAH) (h) The average continuous available hours is the ratio of the available hours (AH) to the number of planned outages (POT) plus the number of unplanned outages (UOT) Value, whose mathematical expression is 4.1.21 Mean time between failures (MTBF or MTBFA) (h) For the unit, the ratio of available hours (AH) to the number of forced outages (FOT), the mathematical expression is. For the unit. FOT For auxiliary equipment, the ratio of operating hours (SH) to the number of unplanned outages (UOT), the mathematical expression is. For auxiliary equipment. UOT 4.1.22 Mean start interval hours (MTTS) (h) The average start interval hour is the ratio of operating hours (SH) to successful start times (SST), and its mathematical expression is. 4.1.23 Start-up reliability (SR) The startup reliability is the ratio of the number of successful startups (SST) and the number of successful startups (SST) plus the number of startup failures (UST) Value percentage, its mathematical expression is. 4.1.24 Start-up failure rate (PS) The startup failure rate is the ratio of the number of startup failures (UST) and the number of startup failures (UST) plus the sum of startup successes (SST) Value percentage, its mathematical expression is. 4.1.25 Mean Time to Repair Auxiliary Equipment Failure (MTBR) (h) The average repair time of auxiliary equipment failure is the ratio of the cumulative repair time (ΣRPH) to the number of unplanned outages (UOT). The learning expression is. 4.1.26 Failure rate of auxiliary equipment (λ) times/year The failure degree of auxiliary equipment is the ratio of the number of calendar hours (CH) of the current year to the mean hours of failure-free operation (MTBFA), its mathematical table The expression is. 4.1.27 Repair rate of auxiliary equipment (μ) times/year The repair rate of auxiliary rib equipment is the ratio of the number of calendar hours (CH) in the current year to the mean time to repair (MTBR) of auxiliary equipment failures. The mathematical expression is. 4.1.28 Maintenance Cost (RC) The cost of one-time maintenance of a unit (including material costs, equipment costs, accessories costs, labor costs, etc.). 4.2 Weighted average evaluation index of multiple units 4.2.1 Weighted average planned outage factor (WPOF) The weighted average planned outage factor is the product of the gross maximum capacity (GMC) of multiple units and the planned outage hours (POH) divided by multiple units The percentage of the product of the gross maximum capacity (GMC) of the unit and the statistical hour (PH), its mathematical expression is. 4.2.2 Weighted average unplanned outage factor (WUOF) The weighted average unplanned outage factor is the product of the gross maximum capacity (GMC) of multiple units and the unplanned outage hours (UOH) divided by more The percentage of the product of gross maximum capacity (GMC) and statistical hour (PH) of a unit, its mathematical expression is. 4.2.3 Weighted average availability factor (WAF) The weighted average available factor is the product of the gross maximum capacity (GMC) of multiple units and the available hours (AH) divided by the gross maximum of multiple units. The percentage of the product of large capacity (GMC) and statistical hours (PH), its mathematical expression is. 4.2.4 Weighted average operating factor (WSF) The weighted average operating coefficient is the product of the gross maximum capacity (GMC) and operating hours (SH) of multiple units divided by the gross maximum of multiple units The percentage of the product of large capacity (GMC) and statistical hours (PH), its mathematical expression is. 4.2.5 Weighted average utilization factor (WUTF) The weighted average utilization factor is the product of the gross maximum capacity (GMC) and utilization hours (UTH) of multiple units divided by the gross maximum of multiple units. The percentage of the product of large capacity (GMC) and statistical hours (PH), its mathematical expression is 4.2.6 Weighted average output factor (WOF) The weighted average output coefficient is the actual gross capacity (GAG) of multiple units divided by the maximum gross capacity (GMC) of multiple units and the operation The percentage of the product of hours (SH), or the product of the gross maximum capacity (GMC) and utilization hours (UTH) of multiple units divided by the product of multiple units The percentage of the product of the group's gross maximum capacity (GMC) and operating hours (SH), and its mathematical expression is. 4.2.7 Weighted average unit reduction output factor (WUDF) Is the product of the gross maximum capacity (GMC) of multiple units and the equivalent outage hours (EUNDH) of reduced output divided by the gross maximum capacity of multiple units The percentage of the product of capacity (GMC) and statistical hours (PH), its mathematical expression is. 4.2.8 Weighted average equivalent availability factor (WEAF) The difference between the gross maximum capacity (GMC) and available hours (AH) of multiple units minus the equivalent outage hours (EUNDH) R The product is divided by the percentage of the product of the gross maximum capacity (GMC) of multiple units and the statistical hour (PH). The mathematical expression is.......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of DL/T 793.3-2019_English be delivered?Answer: Upon your order, we will start to translate DL/T 793.3-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of DL/T 793.3-2019_English with my colleagues?Answer: Yes. The purchased PDF of DL/T 793.3-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. |
