CN112001555A - Method, device, system and medium for power generation plan examination of power plant - Google Patents

Method, device, system and medium for power generation plan examination of power plant Download PDF

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CN112001555A
CN112001555A CN202010872404.5A CN202010872404A CN112001555A CN 112001555 A CN112001555 A CN 112001555A CN 202010872404 A CN202010872404 A CN 202010872404A CN 112001555 A CN112001555 A CN 112001555A
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李智欢
刘淼
潘海平
肖应辉
陈诒亮
瞿运武
杨瑄
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Guangzhou Zhaohe Power Technology Co ltd
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Abstract

The invention discloses a method, a device, a system and a medium for power generation plan examination of a power plant, wherein the method comprises the following steps: acquiring power data of a power plant, and performing data cleaning on the power data; performing auxiliary examination optimization analysis on the cleaned power data to obtain the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the examination electric quantity and the examination-free electric quantity in the target time period, and calculating to obtain the actual examination electric quantity in the target time period according to the examination electric quantity and the examination-free nuclear power quantity; and respectively carrying out statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity and the actual examination electric quantity in the target time period and the plan electric quantity in the target time period in the issued power generation plan to obtain a power generation plan optimization curve and target information, and sending an alarm prompt if the actual examination electric quantity in the target time period exceeds an examination criterion. The invention can monitor and analyze the relevant data of the power plant in real time, maintain the safe and stable operation of the power system and ensure the quality of the electric energy.

Description

Method, device, system and medium for power generation plan examination of power plant
Technical Field
The invention relates to the technical field of power generation assessment management, in particular to a method, a device, a system and a medium for power generation plan assessment of a power plant.
Background
At present, the issuing and implementation of the fine rules for implementing the grid-connected operation management of the power plant in the southern region and the fine rules for implementing the auxiliary service management of the rest grid-connected power plants in the southern region (hereinafter, referred to as the two fine rules) enable a power grid company to further strengthen the assessment on the power plant.
According to the assessment standards of the two detailed rules, the power grid company settles the power plant in a monthly mode, and publishes assessment results. With the increase of the new edition assessment strength, assessment results not only influence the regional ranking of the power plant and the assessment of the scheduling mechanism on the operation level of the power plant, but also directly influence the economic benefit of the power plant and directly relate to the operation level of the power plant.
Research and analysis show that for a power plant, the following problems mainly exist in two detailed assessment related works matched with a power grid company due to high requirement of assessment standards, wide coverage, poor timeliness and lack of necessary technical support:
1) lack of effective monitoring means
The power plant lacks an effective means to monitor the operation data related to the auxiliary service assessment in real time, the auxiliary assessment process is a 'black box' in one month, the power plant cannot acquire the related information of unqualified assessment and the like in time, measures cannot be taken to correct the 'assessed' behavior in the first time, and the related economic loss cannot be recovered in time.
2) Assessment information acquisition delay
Because the assessment information is released according to the monthly degree, the information acquisition has long-time hysteresis, so that the tracing of the power plant to the previously-occurring 'assessed' event is difficult, the means for positioning the previously-occurring key event and related data are lacked, and the foundation for improving the production running level is lacked.
3) Problems in the assessment of data sources
At present, remote measurement data of an Energy Management System (EMS) is mostly adopted for assessment data, telecontrol data of a power plant is transmitted to a scheduling EMS System to pass through a long network transmission path, part of data has the conditions of noise interference, time delay and the like, assessment results have inaccurate factors, and the power plant lacks necessary means to collect relevant data and evidence so as to provide relevant complaints for assessment with errors.
4) Lack of data analysis tools
The analysis of the two detailed assessment conditions by the power plant only stays at the stage of empirical analysis, and is lack of intelligent tools for data storage, statistics and analysis, so that the two detailed assessment operations are difficult to be finely managed.
In summary, for a power plant, in the daily actual production process, an effective means for monitoring and analyzing relevant data in real time is lacked, so that it is difficult to meet two detailed rules for optimizing operation guidance, and the power generation performance index cannot be reasonably arranged in real time.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides a method, a device, a system and a medium for power generation plan examination of a power plant, which can monitor and analyze the relevant data of the power plant in real time, maintain the safe and stable operation of a power system and ensure the quality of electric energy.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a method for power plant generation schedule qualification, comprising the steps of:
1) acquiring power data of a power plant, and performing data cleaning on the power data;
2) performing auxiliary examination optimization analysis on the cleaned power data to obtain the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the examination electric quantity and the examination-free electric quantity in the target time period, and calculating to obtain the actual examination electric quantity in the target time period according to the examination electric quantity and the examination-free nuclear power quantity;
3) and respectively carrying out statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity and the actual examination electric quantity in the target time period and the plan electric quantity in the target time period in the issued power generation plan to obtain a power generation plan optimization curve and target information, and sending an alarm prompt if the actual examination electric quantity in the target time period exceeds an examination criterion.
Further, the step 2) specifically comprises the following steps:
2.1) calculating the integral electric quantity of the current assessment time interval, respectively comparing the integral electric quantity of the current assessment time interval with the planned electric quantity of the corresponding assessment time interval in the issued power generation plan to obtain the deviation electric quantity of the power generation plan time interval and the deviation rate of the electric quantity of the power generation plan time interval corresponding to the current assessment time interval, and if the deviation rate of the electric quantity of the power generation plan time interval exceeds the allowable positive deviation rate or negative deviation rate, taking the integral electric quantity of the current assessment time interval as the assessment electric quantity of the power generation plan time interval;
2.2) integrating the integral electric quantity of all the examination periods on the day up to the current examination period to obtain daily integral electric quantity, integrating the planned electric quantity of all the examination periods on the day up to the current examination period in the issued power generation plan to obtain daily planned electric quantity, comparing the daily integral electric quantity with the daily planned electric quantity to obtain daily deviation electric quantity and daily electric quantity deviation rate, and taking the daily integral electric quantity as the daily examination electric quantity of the power generation plan if the daily electric quantity deviation rate exceeds the allowable positive deviation rate or negative deviation rate;
2.3) integrating all daily integral electric quantity of the current month up to the current assessment period to obtain monthly integral electric quantity, integrating all daily planned electric quantity of the current month up to the current assessment period to obtain monthly planned electric quantity, comparing the monthly integral electric quantity with the monthly planned electric quantity to obtain monthly deviation electric quantity and monthly electric quantity deviation rate, and taking the monthly integral electric quantity as power generation planned monthly assessment electric quantity if the monthly electric quantity deviation rate exceeds an allowable positive deviation rate or negative deviation rate;
and 2.4) judging whether the integral electric quantity of the current examination period is the examination-free nuclear electric quantity, if so, marking the integral electric quantity of the current examination period as the examination-free electric quantity, integrating all examination-free electric quantities of the current day and all examination-free nuclear electric quantities of the current month up to the current examination period to obtain day generation plan examination-free electric quantity and month generation plan examination-free electric quantity, subtracting the day generation plan examination-free electric quantity from the day generation plan examination-free electric quantity to obtain actual generation plan day examination electric quantity, and subtracting the month generation plan examination-free electric quantity from the month generation plan examination electric quantity to obtain actual generation plan month examination electric quantity.
Further, the step 2.4) specifically comprises the following steps:
s1) judging whether the organic group is put into automatic power generation control in the current assessment period, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), otherwise, entering S2);
s2) judging whether the deviation electric quantity of the current assessment period is the deviation caused by the correct action of primary frequency modulation, if so, marking the integral electric quantity of the current assessment period as the assessment-free electric quantity and jumping to the step S11), otherwise, entering S3);
s3) judging whether the deviation electric quantity of the current assessment time interval is the deviation of the unit in the normal starting and stopping processes, if so, marking the integral electric quantity of the current assessment time interval as the assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S4);
s4) judging whether a system emergency situation occurs in the current assessment time period, if so, marking the integral electric quantity of the current assessment time period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S5);
s5) judging whether the unit deviates from the power generation plan curve due to unplanned shutdown in the current assessment period, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S6);
s6) judging whether the deviation electric quantity of the current check time interval is the plan electric quantity deviation caused by passing through the water turbine vibration area, if so, marking the integral electric quantity of the current check time interval as the check-free electric quantity and jumping to the step S11), otherwise, entering the step S7);
s7) judging whether the no-regulating hydroelectric generating set and the bulb tubular hydroelectric generating set are lower than 70% of rated water head in the current assessment period, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S8);
s8) judging that the variation rate of the power generation plan curve in the current assessment period exceeds the set regulation capacity, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), and if not, entering the step S9);
s9) judging whether the deviation electric quantity of the current check time interval is the deviation of the planned electric quantity caused by the gas turbine when the temperature control operation is reached, if so, marking the integral electric quantity of the current check time interval as the check-free electric quantity and jumping to the step S11), otherwise, entering the step S10);
s10) judging whether the time difference between the issuing plan and the executing change plan in the current assessment period is less than 30 minutes, if so, marking the integral electric quantity of the current assessment period as the non-assessment electric quantity and entering the next step, otherwise, entering the next step;
s11) respectively integrating all the non-examination electric quantity of the current day and all the non-examination electric quantity of the current month to obtain the non-examination electric quantity of the daily power generation plan and the non-examination electric quantity of the monthly power generation plan;
s12) subtracting the daily check electric quantity of the power generation plan from the daily check electric quantity of the daily power generation plan to obtain the daily check electric quantity of the actual power generation plan, subtracting the monthly check electric quantity of the power generation plan from the monthly check electric quantity of the power generation plan to obtain the monthly check electric quantity of the actual power generation plan, and skipping to the step 3).
The invention also provides a device for power generation plan examination of the power plant, which comprises the following components:
the processing module is used for acquiring power data of a power plant, cleaning the power data, performing auxiliary examination optimization analysis on the cleaned power data to obtain electric quantity deviation rate, deviation electric quantity, integral electric quantity, examination electric quantity and examination-free electric quantity in a target time period, calculating actual examination electric quantity in the target time period according to the examination electric quantity and the examination-free power quantity, performing statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the actual examination electric quantity in the target time period and planned electric quantity in the target time period in a transmitted power generation plan respectively to obtain a power generation plan optimization curve and target information, and sending an alarm prompt if the actual examination electric quantity in the target time period exceeds an examination criterion;
and the display module is used for displaying the power generation plan optimization curve and the target information.
The invention also provides a system for power generation plan examination of a power plant, which comprises at least two telecontrol hosts, at least two telecontrol switches, at least two security switches, an auxiliary examination front-end processor and an auxiliary examination background workstation, wherein the telecontrol hosts are connected with each other through the telecontrol switches respectively, the telecontrol hosts are connected with the auxiliary examination front-end processor through the corresponding security switches, and the auxiliary examination front-end processor is connected with the auxiliary examination background workstation, wherein:
the telemechanical host is used for realizing acquisition of power data of a corresponding power plant and uploading of control data;
the telecontrol switch is used for realizing communication between telecontrol hosts;
the security switch is used for realizing communication between the telecontrol host and the auxiliary examination front-end processor;
the auxiliary examination front-end processor is used for acquiring power data of the power plant, cleaning the power data and sending the power data to the auxiliary examination background workstation;
the auxiliary assessment background workstation is used for carrying out auxiliary assessment optimization analysis on the cleaned power data to obtain an electric quantity deviation rate, a deviation electric quantity, an integral electric quantity, an assessment electric quantity and an assessment-free electric quantity in a target time period, calculating to obtain an actual assessment electric quantity in the target time period according to the assessment electric quantity and the assessment-free nuclear power quantity, respectively carrying out statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the actual assessment electric quantity in the target time period and a plan electric quantity in the target time period in a issued power generation plan to obtain a power generation plan optimization curve and target information, displaying the power generation plan optimization curve and the target information, and sending an alarm prompt if the actual assessment electric quantity in the target time period exceeds an assessment.
The present invention also proposes a computer-readable storage medium having stored thereon a computer program programmed or configured to perform the above-described method for power plant generation plan qualification.
Compared with the prior art, the invention has the advantages that:
the method provided by the invention cleans the acquired power data, eliminates errors possibly occurring in subsequent calculation, then processes the power data after data cleaning in real time, generates information such as power deviation rate, deviation power, integral power, actual checking power and the like in a target time period, and further performs statistical analysis on the generated information to obtain a power generation plan optimization curve and target information, thereby realizing real-time acquisition and data storage, statistics and analysis of the information, and providing an auxiliary decision service for power generation enterprises, power grid management enterprises and power users.
Drawings
FIG. 1 is a flow chart of a method according to an embodiment of the present invention.
FIG. 2 is a flow chart of auxiliary assessment in the embodiment of the present invention.
FIG. 3 is a flow chart of the power generation plan non-check judgment according to the embodiment of the present invention.
FIG. 4 is a system diagram according to an embodiment of the present invention.
FIG. 5 is a screenshot of monthly information of a power generation plan of an auxiliary assessment background workstation according to an embodiment of the invention.
FIG. 6 is a screenshot of daily information of a power generation plan of an auxiliary assessment background workstation according to an embodiment of the invention.
FIG. 7 is a screenshot of information of a discovery plan period of an auxiliary assessment background workstation according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific preferred embodiments of the description, without thereby limiting the scope of protection of the invention.
As shown in FIG. 1, the method for power plant generation schedule qualification of the present invention includes the steps of:
1) acquiring power data of a power plant, and performing data cleaning on the power data, wherein in this embodiment, the power plant may be a common power plant, such as a hydraulic power plant, a thermal power plant, or a nuclear power plant, and the power data in this embodiment includes power data of a power plant grid-connected generator set, including a plant load actual value, a unit load instruction feedback value, and also includes power data in a power generation plan issued, such as a plant active output target value unit load instruction target value;
2) performing auxiliary examination optimization analysis on the cleaned power data to obtain the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the examination electric quantity and the examination-free electric quantity in the target time period, and calculating to obtain the actual examination electric quantity in the target time period according to the examination electric quantity and the examination-free nuclear power quantity;
3) the method comprises the steps of respectively carrying out statistic analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity and the actual check electric quantity in a target time period and the plan electric quantity in the target time period in a issued power generation plan to obtain a power generation plan optimization curve and target information, and sending an alarm prompt if the actual check electric quantity in the target time period exceeds a check criterion.
In step 2) of this embodiment, the auxiliary examination optimization analysis is used to calculate examination electric quantity from a part of electric quantity that is deviated from the daily power generation scheduling plan curve by more than a certain amount, and examine the part of deviation electric quantity by synthesizing the examination-free electric quantity. In this embodiment, the target time period includes an assessment period, a current day and a current month including a plurality of assessment periods, and the setting criteria of the assessment periods specifically include:
the time of day (24 hours) was divided into 96 periods on average, each period being 15 minutes, with the starting point being "l (corresponding to time 00: 15)" and the ending point being "96 (corresponding to time 24: 00)".
As shown in fig. 2, the auxiliary assessment optimization analysis in step 2) of this embodiment specifically includes the following steps:
2.1) calculating the integral electric quantity of the current assessment period, comparing the integral electric quantity of the current assessment period with the planned electric quantity of the corresponding assessment period in a transmitted power generation plan to obtain the deviation electric quantity of the power generation plan period and the deviation rate of the electric quantity of the power generation plan period corresponding to the current assessment period, namely calculating the integral electric quantity aiming at the electric data within 15 minutes of the current assessment period, matching the planned electric quantity of the current assessment period in the power generation plan, comparing the integral electric quantity of the current assessment period with the planned electric quantity of the current assessment period to obtain the deviation electric quantity of the power generation plan period and the deviation rate of the electric quantity of the power generation plan period, and taking the integral electric quantity of the current assessment period as the assessment electric quantity of the power generation plan period if the deviation rate of the electric quantity of the power generation plan period exceeds the allowable positive deviation rate or:
2.1.1) according to the actual load value of the whole plant, calculating the integral electric quantity in each minute in the current assessment period, wherein the function expression is as follows:
Figure BDA0002651534110000061
in the above formula, Pi…Pi+59Respectively corresponding to each second in one minute;
2.1.2) the integral electric quantity in each minute is summarized to obtain the integral electric quantity of the current assessment time period, and the function expression is as follows:
Figure BDA0002651534110000062
in the above formula, WiThe integrated electric quantity in each minute in the current assessment period is obtained;
2.1.3) calculating the planned electric quantity of the current assessment time period in the power generation plan according to the active output target value of the whole plant, wherein the function expression is as follows:
Figure BDA0002651534110000063
in the above formula, PkIs the total plant active power output target value, P, of the current assessment periodk-1The target value of the whole-plant active power output in the last examination period is obtained;
2.1.4) calculating the deviation electric quantity of the power generation planning time interval corresponding to the current assessment time interval, wherein the function expression is as follows:
Figure BDA0002651534110000064
in the above formula, the first and second carbon atoms are,
Figure BDA0002651534110000065
the planned electric quantity for the current examination period,
Figure BDA0002651534110000066
the integral electric quantity of the current assessment period is obtained;
2.1.5) subtracting the deviation electric quantity of the primary frequency modulation correct action electric quantity from the deviation electric quantity of the power generation plan time period corresponding to the current assessment time period, and then calculating the power generation plan time period electric quantity deviation rate corresponding to the current assessment time period, wherein the function expression is as follows:
Figure BDA0002651534110000067
Figure BDA0002651534110000068
in the formula (5), the reaction mixture is,
Figure BDA0002651534110000069
the deviation electric quantity of the power generation planning time interval corresponding to the current assessment time interval is shown in an equation (6),
Figure BDA00026515341100000610
the integral electric quantity of the current assessment period is obtained;
as shown in the content in the first step flow of fig. 2, the integrated electric quantity and the planned electric quantity in the assessment period are obtained through the calculation from the step 2.1.1) to the step 2.1.5), and the deviation electric quantity of the power generation planning period and the electric quantity deviation ratio of the power generation planning period corresponding to the assessment period are obtained, as shown in the content in the second step flow of fig. 2, whether the integrated electric quantity in the assessment period is the assessment electric quantity is judged next;
2.1.6) if the deviation rate of the electric quantity of the power generation planning time interval corresponding to the current assessment time interval exceeds the allowable positive deviation rate or negative deviation rate, taking the integrated electric quantity of the current assessment time interval as the assessment electric quantity of the power generation planning time interval corresponding to the current assessment time interval;
2.2) integrating the integral electric quantity of all the examination periods on the day up to the current examination period to obtain the daily integral electric quantity, integrating the planned electric quantity of all the examination periods on the day up to the current examination period in the issued power generation plan to obtain the daily planned electric quantity, namely adding all the integral electric quantity integrals corresponding to all the examination periods up to the current examination period in 96 examination periods on the day to obtain the daily integral electric quantity, simultaneously adding all the corresponding planned electric quantity integrals to obtain the daily planned electric quantity, if the current examination period is the 48 th examination period, the daily integral electric quantity is the result obtained by adding all the integral electric quantity integrals corresponding to 48 examination periods from the starting point to the current examination period, and meanwhile, the daily planned electric quantity is the result obtained by adding all the planned electric quantity integrals corresponding to 48 examination periods from the starting point to the current examination period, after the daily integral electric quantity and the daily planned electric quantity are obtained, comparing the daily integral electric quantity with the daily planned electric quantity according to the expressions (4) to (6) in the step 2.1) to obtain a current day deviation electric quantity and a current day electric quantity deviation rate, and taking the daily integral electric quantity as a power generation planning daily check electric quantity if the current day electric quantity deviation rate exceeds an allowable positive deviation rate or a negative deviation rate;
2.3) integrating all daily integral electric quantity of the month up to the current examination period to obtain monthly integral electric quantity, integrating all daily integral electric quantity of the month up to the current examination period to obtain monthly planned electric quantity, namely adding daily integral electric quantity of the month up to the previous day and daily integral electric quantity of the day up to the current examination period obtained in the step 2.2) to obtain monthly integral electric quantity according to all electric data of the month up to the current examination period, adding daily integral electric quantity of the month up to the previous day and daily integral electric quantity of the day up to the current examination period obtained in the step 2.2) to obtain monthly planned electric quantity, and comparing the monthly integral electric quantity with the monthly planned electric quantity according to the expressions (4) to (6) in the step 2.1) to obtain monthly deviation electric quantity and monthly deviation rate, if the monthly electric quantity deviation rate exceeds the allowable positive deviation rate or negative deviation rate, the monthly integrated electric quantity is used as the monthly checking electric quantity of the power generation plan;
in the embodiment, through the calculation from the step 2.1) to the step 2.3), besides the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity and the assessment electric quantity in the current assessment period can be obtained in real time, the real-time change data of the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity and the assessment electric quantity in the current day and month can be obtained according to the change of the assessment period, so that more precise monitoring and analysis data are provided for assessment work, and the electricity generation performance indexes are reasonably arranged in real time;
2.4) judging whether the integral electric quantity of the current examination period is the non-examination nuclear electric quantity, if so, marking the integral electric quantity of the current examination period as the non-examination nuclear electric quantity, integrating all the non-examination electric quantity of the current day and all the non-examination nuclear electric quantity of the current month up to the current examination period to obtain the non-examination electric quantity of the daily power generation plan and the non-examination electric quantity of the monthly power generation plan, subtracting the daily examination electric quantity of the daily power generation plan from the non-examination electric quantity of the daily power generation plan to obtain the daily examination electric quantity of the actual power generation plan, subtracting the monthly examination electric quantity of the power generation plan from the non-examination electric quantity of the monthly power generation plan to obtain the monthly examination electric quantity of the actual power, under special conditions, when the electric quantity deviation rate of the power generation planning time interval corresponding to the assessment time interval exceeds the allowable positive deviation rate or negative deviation rate, the integrated electric quantity in the assessment period is not assessed, and therefore, as shown in fig. 3, the step 2.4) in this embodiment specifically includes the following steps:
s1) judging whether there is a set to be put into Automatic power Generation Control in the current assessment period, if yes, marking the integrated power of the current assessment period as the assessment-free power, and jumping to step S11, otherwise, entering S2).
S2) judging whether the deviation electric quantity of the power generation plan time interval corresponding to the current assessment time interval is the deviation caused by the correct action of primary frequency modulation, if so, marking the integral electric quantity of the current assessment time interval as the assessment-free electric quantity and jumping to the step S11), otherwise, entering S3);
s3), judging whether the deviation electric quantity of the power generation plan time interval corresponding to the current assessment time interval is the deviation electric quantity of the unit in the normal starting and stopping processes, if yes, marking the integral electric quantity of the current assessment time interval as the assessment-free electric quantity, and jumping to the step S11), otherwise, entering the step S4), in this embodiment, the normal starting and stopping process of the unit is defined as follows:
the normal shutdown process of the unit: the time point when the unit output is reduced to 90% of the minimum stable combustion output is A, and the time delay a (minutes) before shutdown is considered, wherein the (A-a) is the starting time point A0 of the shutdown process; the time point when the unit output reduction force is reduced to 10% of the minimum stable combustion output is the end time point B of the shutdown process, and the section A0B is the shutdown process of the unit;
the normal starting process of the unit: the time point when the set output is 10% higher than the minimum stable combustion output is the starting time point C, the time point when the set output is 90% higher than the minimum stable combustion output is D, the delay D (minutes) after starting is considered, the (D + D) is the starting termination time point D0, and the CD0 section is the starting process of the set;
for hydroelectric generating units, a-d-15 minutes; for a thermal power plant unit, a-d-60 minutes;
s4) judging whether a system emergency situation occurs in the current assessment time period, if so, marking the integral electric quantity of the current assessment time period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S5);
s5) judging whether the unit deviates from a power generation plan curve due to unplanned shutdown in the current assessment period, if so, marking the integral electric quantity of the current assessment period as the non-assessment electric quantity, and jumping to the step S11), otherwise, entering the step S6), in the embodiment, if the upper limit of the whole plant is less than the total output of the startup unit, the deviation electric quantity in one hour is logged into the power generation plan for assessment, if the difference between the rated capacity and the upper limit is partially included in the non-assessment after one hour is exceeded, and the time is out of the range of the starting time point of the non-assessment (only including the temporary shutdown), the power generation plan of the later time is not assessed, if the upper limit of the whole plant sent by the power plant is lower than the plan, and the actual total output of the unit is less than the upper limit of the whole plant, the actual output and the difference of the;
s6) judging whether the deviation electric quantity of the current check time interval is the plan electric quantity deviation caused by passing through the water turbine vibration area, if so, marking the integral electric quantity of the current check time interval as the check-free electric quantity and jumping to the step S11), otherwise, entering the step S7);
s7) judging whether the no-regulating hydroelectric generating set and the bulb tubular hydroelectric generating set are lower than 70% of rated water head in the current assessment period, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S8);
s8), judging that the variation rate of the power generation plan curve in the current assessment period exceeds the unit regulation capacity, if yes, marking the integral electric quantity of the current assessment period as the assessment-free electric quantity, and jumping to step S11), otherwise, entering step S9), in this embodiment, if the difference between the power generation plan at the time i and the power generation plan at the time i +1 is greater than the climbing capacity for 15 minutes, the power generation plan in the interval is automatically considered-free, and the function expression is as follows:
Figure BDA0002651534110000091
in the formula (7), PiAnd Pi+1The power generation plans at the i moment and the power generation plans at the i +1 moment respectively, namely the difference value of the planned electric quantity respectively corresponding to the current check time period and the adjacent last check time period, the different generator sets have different climbing capacities, the standard regulation rate of the coal-fired unit is 1.5%/min of the rated capacity, and the standard regulation rate of the circulating fluidized bed unit is the rated capacityThe standard regulation rate of the gas and oil-fired unit is 3%/min of rated capacity, the standard regulation rate of the conventional hydroelectric generating set is 20%/min of rated capacity, and the standard regulation rates of other types of units are regulated according to the standard regulation rate specified by a grid-connected dispatching protocol;
s9) judging whether the deviation electric quantity of the current check time interval is the deviation of the planned electric quantity caused by the gas turbine when the temperature control operation is reached, if so, marking the integral electric quantity of the current check time interval as the check-free electric quantity and jumping to the step S11), otherwise, entering the step S10);
s10) judging whether the time difference between the issuing plan and the executing change plan in the current assessment period is less than 30 minutes, if so, marking the integral electric quantity of the current assessment period as the non-assessment electric quantity and entering the next step, otherwise, entering the next step;
s11) respectively integrating all the non-examination electric quantity of the current day and all the non-examination electric quantity of the current month to obtain the non-examination electric quantity of the daily power generation plan and the non-examination electric quantity of the monthly power generation plan;
s12) subtracting the daily check electric quantity of the power generation plan from the daily check electric quantity of the daily power generation plan to obtain the daily check electric quantity of the actual power generation plan, subtracting the monthly check electric quantity of the power generation plan from the monthly check electric quantity of the power generation plan to obtain the monthly check electric quantity of the actual power generation plan, and skipping to the step 3).
The invention also provides a device for power generation plan examination of the power plant, which comprises the following components:
the processing module is used for acquiring power data of a power plant, cleaning the power data, performing auxiliary examination optimization analysis on the cleaned power data to obtain electric quantity deviation rate, deviation electric quantity, integral electric quantity, examination electric quantity and examination-free electric quantity in a target time period, calculating actual examination electric quantity in the target time period according to the examination electric quantity and the examination-free power quantity, performing statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the actual examination electric quantity in the target time period and planned electric quantity in the target time period in a transmitted power generation plan respectively to obtain a power generation plan optimization curve and target information, and sending an alarm prompt if the actual examination electric quantity in the target time period exceeds an examination criterion;
and the display module is used for displaying the power generation plan optimization curve and the target information.
As shown in fig. 4, the present invention further provides a system for power generation plan evaluation of a power plant, including at least two telecontrol hosts, at least two telecontrol switches, at least two security switches, an auxiliary evaluation front-end processor and an auxiliary evaluation background workstation, where the telecontrol hosts are connected to each other through the telecontrol switches, the telecontrol hosts are connected to the auxiliary evaluation front-end processor through the corresponding security switches, and the auxiliary evaluation front-end processor is connected to the auxiliary evaluation background workstation, where:
the telemechanical host is used for realizing acquisition of power data of a corresponding power plant and uploading of control data;
the telecontrol switch is used for realizing communication between telecontrol hosts;
the security switch is used for realizing communication between the telecontrol host and the auxiliary examination front-end processor;
the auxiliary examination front-end processor is used for acquiring power data of a power plant, cleaning the power data and sending the power data to the auxiliary examination background workstation, the auxiliary examination front-end processor of the embodiment directly captures network messages from the security switch to analyze the data and clean the data, other system manufacturers and service systems of the power plant are not required to be matched to provide files and interfaces, and the operation is convenient and fast;
in this embodiment, the power data collection period of the auxiliary assessment front-end processor is 1 minute, the collected power data includes a load actual value, a unit load instruction feedback value, a plant active power output target value, and a unit load instruction target value, and the auxiliary assessment front-end processor of this embodiment is configured as follows: an Intel I7 processor, a memory 16G, a hard disk 1T or above, a network card RJ45 x 8 port and a dual power supply;
the auxiliary examination background workstation is used for carrying out auxiliary examination optimization analysis on the cleaned power data to obtain power deviation rate, deviation power, integral power, examination power and examination-free power in a target time period, calculating actual examination power in the target time period according to the examination power and the examination-free power, carrying out statistical analysis on the power deviation rate, the deviation power, the integral power, the actual examination power in the target time period and planned power in the target time period in a transmitted power generation plan respectively to obtain a power generation plan optimization curve and target information, displaying the power generation plan optimization curve and the target information, and giving an alarm if the actual examination power in the target time period exceeds an examination criterion, in the embodiment, the auxiliary examination background workstation carries out auxiliary examination optimization analysis by taking 15 minutes as an examination time period as the target time period, and the auxiliary examination optimization analysis results of each examination time period are respectively counted according to days and months, the auxiliary assessment background workstation of the embodiment is configured as follows: an Intel I5 processor, a memory 8GB, a hard disk 1T, a network card RJ45 x 1 port, a DVD driver, a sound box and a 24-inch wide-screen liquid crystal display support 1920 x 1080 resolution.
In this embodiment, for the method for assessing the power generation plan of the power plant, before step 1), the method further includes a step of configuring an assessment operation flow, which specifically includes:
A1) the grid-connected power plant declares the next-day adjustable output upper limit before 11:00 of the current day, if the next-day adjustable output upper limit is not declared on time, the next-day highest adjustable output is defaulted to be the current highest adjustable output, and a subordinate power scheduling mechanism of a power grid company sends the next-day power generation plan curve to a receiving device appointed by the grid-connected power plant before 21:00 of the current day;
A2) if a transmission channel fault or other reasons cause that the power generation plan curve cannot be transmitted to a receiving device appointed by the grid-connected power plant within a specified time, a subordinate power dispatching mechanism of a power grid company transmits a power generation plan instruction to the grid-connected power plant through a dispatching telephone or a communication means meeting the safety requirement;
A3) the on-duty dispatcher of the power dispatching mechanism subordinate to the power grid company has the right to modify the daily power generation plan curve according to the regulations, the modified daily power generation plan curve is issued to the grid-connected power plant 30 minutes in advance, the load curve issued in less than 30 minutes is avoided from the issuing time within 30 minutes;
A4) setting the allowable positive deviation rate and negative deviation rate of the generated energy of a conventional grid-connected power plant (unit) and a nuclear power plant (unit) to be 2.5%; the allowable positive deviation rate and negative deviation rate of the generated energy of the cogeneration, the circulating fluidized bed, the combustion-evaporation combined cycle, the coal gangue generator set and the hydroelectric generating set with the single machine capacity of 4 ten thousand kilowatts or less are both 3 percent; the allowable positive deviation rate and negative deviation rate of the generated energy of the water-coal-slurry unit are both 6%; and simultaneously setting the maximum allowable deviation rate of the unit execution according with the various technical characteristics.
After the configuration is completed, the power plant power data is acquired and examined according to the method for examining the power plant power generation plan in this embodiment, and the examination analysis result is displayed on the interface of the power plant auxiliary service online monitoring background workstation, as shown in fig. 5 to 7.
The present invention also proposes a computer-readable storage medium having stored thereon a computer program programmed or configured to perform the above-described method for power plant generation plan qualification.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims (6)

1. A method for power plant generation schedule assessment, comprising the steps of:
1) acquiring power data of a power plant, and performing data cleaning on the power data;
2) performing auxiliary examination optimization analysis on the cleaned power data to obtain the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the examination electric quantity and the examination-free electric quantity in the target time period, and calculating to obtain the actual examination electric quantity in the target time period according to the examination electric quantity and the examination-free nuclear power quantity;
3) and respectively carrying out statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity and the actual examination electric quantity in the target time period and the plan electric quantity in the target time period in the issued power generation plan to obtain a power generation plan optimization curve and target information, and sending an alarm prompt if the actual examination electric quantity in the target time period exceeds an examination criterion.
2. The method for power plant generation schedule qualification of the power plant of claim 1, wherein step 2) comprises the steps of:
2.1) calculating the integral electric quantity of the current assessment time interval, comparing the integral electric quantity of the current assessment time interval with the planned electric quantity of the corresponding assessment time interval in the issued power generation plan to obtain the deviation electric quantity of the power generation plan time interval and the deviation rate of the electric quantity of the power generation plan time interval corresponding to the current assessment time interval, and if the deviation rate of the electric quantity of the power generation plan time interval exceeds the allowable positive deviation rate or negative deviation rate, taking the integral electric quantity of the current assessment time interval as the assessment electric quantity of the power generation plan time interval;
2.2) integrating the integral electric quantity of all the check periods on the day up to the current check period to obtain daily integral electric quantity, integrating the planned electric quantity of all the check periods on the day up to the current check period in the issued power generation plan to obtain daily planned electric quantity, comparing the daily integral electric quantity with the daily planned electric quantity to obtain daily deviation electric quantity and daily electric quantity deviation rate, and taking the daily integral electric quantity as the daily check electric quantity of the power generation plan if the daily electric quantity deviation rate exceeds the allowable positive deviation rate or negative deviation rate;
2.3) integrating all daily integral electric quantity of the current month up to the current assessment period to obtain monthly integral electric quantity, integrating all daily planned electric quantity of the current month up to the current assessment period to obtain monthly planned electric quantity, comparing the monthly integral electric quantity with the monthly planned electric quantity to obtain monthly deviation electric quantity and monthly electric quantity deviation rate, and taking the monthly integral electric quantity as power generation planned monthly assessment electric quantity if the monthly electric quantity deviation rate exceeds an allowable positive deviation rate or negative deviation rate;
and 2.4) judging whether the integral electric quantity of the current examination period is the examination-free nuclear electric quantity, if so, marking the integral electric quantity of the current examination period as the examination-free electric quantity, integrating all examination-free electric quantities of the current day and all examination-free nuclear electric quantities of the current month up to the current examination period to obtain day generation plan examination-free electric quantity and month generation plan examination-free electric quantity, subtracting the day generation plan examination-free electric quantity from the day generation plan examination-free electric quantity to obtain actual generation plan day examination electric quantity, and subtracting the month generation plan examination-free electric quantity from the month generation plan examination electric quantity to obtain actual generation plan month examination electric quantity.
3. Method for power plant generation schedule qualification according to claim 2, characterized in that step 2.4) comprises in particular the steps of:
s1) judging whether the organic group is put into automatic power generation control in the current assessment period, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), otherwise, entering S2);
s2) judging whether the deviation electric quantity of the power generation plan time interval corresponding to the current assessment time interval is the deviation caused by the correct action of primary frequency modulation, if so, marking the integral electric quantity of the current assessment time interval as the assessment-free electric quantity and jumping to the step S11), otherwise, entering S3);
s3) judging whether the deviation electric quantity of the power generation planning time interval corresponding to the current assessment time interval is the deviation of the normal starting and stopping process of the unit, if so, marking the integral electric quantity of the current assessment time interval as the assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S4);
s4) judging whether a system emergency situation occurs in the current assessment time period, if so, marking the integral electric quantity of the current assessment time period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S5);
s5) judging whether the unit deviates from the power generation plan curve due to unplanned shutdown in the current assessment period, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S6);
s6) judging whether the deviation electric quantity of the current check time interval is the plan electric quantity deviation caused by passing through the water turbine vibration area, if so, marking the integral electric quantity of the current check time interval as the check-free electric quantity and jumping to the step S11), otherwise, entering the step S7);
s7) judging whether the no-regulating hydroelectric generating set and the bulb tubular hydroelectric generating set are lower than 70% of rated water head in the current assessment period, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), otherwise, entering the step S8);
s8) judging that the variation rate of the power generation plan curve in the current assessment period exceeds the set regulation capacity, if so, marking the integral electric quantity of the current assessment period as assessment-free electric quantity and jumping to the step S11), and if not, entering the step S9);
s9) judging whether the deviation electric quantity of the current check time interval is the deviation of the planned electric quantity caused by the gas turbine reaching the temperature control operation, if so, marking the integral electric quantity of the current check time interval as the check-free electric quantity and jumping to the step S11), otherwise, entering the step S10).
S10) judging whether the time difference between the issuing plan and the executing change plan in the current assessment period is less than 30 minutes, if so, marking the integral electric quantity of the current assessment period as the non-assessment electric quantity and entering the next step, otherwise, entering the next step;
s11) respectively integrating all the non-examination electric quantity of the current day and all the non-examination electric quantity of the current month to obtain the non-examination electric quantity of the daily power generation plan and the non-examination electric quantity of the monthly power generation plan;
s12) subtracting the daily check electric quantity of the power generation plan from the daily check electric quantity of the daily power generation plan to obtain the daily check electric quantity of the actual power generation plan, subtracting the monthly check electric quantity of the power generation plan from the monthly check electric quantity of the power generation plan to obtain the monthly check electric quantity of the actual power generation plan, and skipping to the step 3).
4. An apparatus for power plant generation schedule qualification, comprising:
the processing module is used for acquiring power data of a power plant, cleaning the power data, performing auxiliary examination optimization analysis on the cleaned power data to obtain electric quantity deviation rate, deviation electric quantity, integral electric quantity, examination electric quantity and examination-free electric quantity in a target time period, calculating actual examination electric quantity in the target time period according to the examination electric quantity and the examination-free power quantity, performing statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the actual examination electric quantity in the target time period and planned electric quantity in the target time period in a transmitted power generation plan respectively to obtain a power generation plan optimization curve and target information, and sending an alarm prompt if the actual examination electric quantity in the target time period exceeds an examination criterion;
and the display module is used for displaying the power generation plan optimization curve and the target information.
5. The utility model provides a system for power generation plan examination of power plant, its characterized in that includes two at least telecontrol host computers, two at least telecontrol switches, two at least security protection switches, supplementary examination front-end processor and supplementary examination backstage workstation, the telecontrol host computers interconnect through the telecontrol switch respectively, the telecontrol host computers are connected through corresponding security protection switch and supplementary examination front-end processor, supplementary examination front-end processor and supplementary examination backstage workstation are connected, wherein:
the telemechanical host is used for realizing acquisition of power data of a corresponding power plant and uploading of control data;
the telecontrol switch is used for realizing communication between telecontrol hosts;
the security switch is used for realizing communication between the telecontrol host and the auxiliary examination front-end processor;
the auxiliary examination front-end processor is used for acquiring power data of the power plant, cleaning the power data and sending the power data to the auxiliary examination background workstation;
the auxiliary assessment background workstation is used for carrying out auxiliary assessment optimization analysis on the cleaned power data to obtain an electric quantity deviation rate, a deviation electric quantity, an integral electric quantity, an assessment electric quantity and an assessment-free electric quantity in a target time period, calculating to obtain an actual assessment electric quantity in the target time period according to the assessment electric quantity and the assessment-free nuclear power quantity, respectively carrying out statistical analysis on the electric quantity deviation rate, the deviation electric quantity, the integral electric quantity, the actual assessment electric quantity in the target time period and a plan electric quantity in the target time period in a issued power generation plan to obtain a power generation plan optimization curve and target information, displaying the power generation plan optimization curve and the target information, and sending an alarm prompt if the actual assessment electric quantity in the target time period exceeds an assessment.
6. A computer readable storage medium having stored thereon a computer program programmed or configured to perform the method for power plant generation schedule qualification of any of claims 1-3.
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