CN113705834A - Real-time unit power generation plan inspection method and device - Google Patents
Real-time unit power generation plan inspection method and device Download PDFInfo
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Abstract
The invention discloses a real-time unit power generation plan inspection method, which comprises the steps of after a real-time planning system obtains an optimization result and outputs the optimization result, entering safety check calculation and simultaneously entering unit plan inspection; reading an optimized input case data set and an optimized result data set, checking resources, calling a unit plan checking model, and performing parallel checking on a unit power generation plan; and if the generating plan of the unit does not meet the inspection condition or the safety check calculation result is unconverged, printing a log and informing a dispatching mechanism of warning information. According to the invention, through the real-time unit power generation plan inspection alarm, the power generation plan rationality can be inspected before the unit power generation plan is executed, and the inspection result is notified to the dispatching desk, so that the dispatching desk can judge the rationality of the unit power generation plan in advance, and the safe operation of a power grid is maintained.
Description
Technical Field
The invention belongs to the technical field of electric power systems and automation thereof, and particularly relates to a real-time unit power generation plan inspection method and a real-time unit power generation plan inspection device.
Background
The main process for making the real-time unit power generation plan at present comprises the following steps: the method comprises the following steps of data inspection, initial planning, sensitivity calculation, optimization calculation, safety check, case approval, plan release and the like. The real-time unit power generation plan automatic driving system makes a unit power generation plan every 15 minutes, the made unit power generation plan takes a time point 15 minutes later in the future as a starting point, every 5 minutes as a time point, and the total 12 time point unit output plans are obtained.
The optimization module completes final compilation according to various set constraint conditions, the optimization model is a simple mathematical model, and when two different constraint conditions conflict, the constraint conditions can only be chosen according to penalty factors, so that when the real-time unit power generation plan is compiled, the compiled real-time unit power generation plan is unreasonable due to abandonment of a certain constraint condition.
The real-time unit power generation plan is calculated by the optimization module and then output, the real-time unit power generation plan is input into the safety check module to be checked safely, the safety check only calculates the whole network power flow, the unit plan value is not modified, and after the safety check, the real-time unit power generation plan is sent to an automatic power generation control system (AGC) system and then is issued to the unit to be executed no matter whether the unit plan is reasonable or not and whether the whole network power flow calculation is converged or not. If the real-time unit power generation plan is unreasonable, the unreasonable unit power generation plan can only be processed by the scheduling mechanism after the unit power generation plan is executed and problems are exposed in the operation process, and the unreasonable unit power generation plan inevitably affects the safe operation of a power grid and lacks of an early warning mechanism.
In the normal operation of the real-time power generation planning system, the time spent on calculating the power generation plan of a round of real-time unit is about 6 to 8 minutes, and 7 to 9 minutes is left from the actual execution of the plan, and the time from the completion of the real-time power generation plan compilation of the unit to the issuing of the unit plan is enough for a scheduling mechanism and operation and maintenance personnel to timely process the real-time power generation plan of an abnormal unit so as to ensure the reasonability of the power generation plan of the unit and maintain the safe operation of a power grid.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for checking a power generation plan of a real-time unit.
In order to solve the technical problems, the technical scheme of the invention is as follows.
In a first aspect, the invention provides a real-time unit power generation plan checking method, which comprises the following processes:
acquiring a real-time unit power generation plan optimization result data set and an optimization case data set corresponding to the optimization result data set;
and (3) inspecting the real-time generator set power generation plan optimization result data set according to the optimization case data set, wherein the inspection tasks comprise: system balance inspection, unit output out-of-limit inspection, unit climbing speed inspection, unit starting and stopping state inspection, unit group total output out-of-limit inspection, section plan tide out-of-limit inspection and unit power generation plan stability inspection; obtaining a test result corresponding to each test task;
summarizing the inspection result corresponding to each inspection task, and finally judging that the real-time unit power generation plan optimization result is reasonable if the inspection results of all the inspection tasks are all passed through the inspection; and if the verification result of any verification task is that the verification is not passed, outputting alarm information.
Optionally, the verification task includes a corresponding verification task number and a verification resource, the verification resource includes a verification mathematical model corresponding to the verification task, and the real-time unit power generation plan optimization result data set is verified according to the verification mathematical model.
Optionally, the check tasks are executed in parallel.
Optionally, the system balance check includes:
calculating the total planned output sum P (i) of all units, calculating the total planned output sum T (i) of all connecting lines, obtaining the system load X (i), and judging that the system balance check is passed if the calculation result meets the following conditions:
|X(i)-(P(i)+T(i))|≤5％*X(i)
in the above formula, i is 1,2, …,12, i is the planning time point of the real-time power generation planning unit;
if the system passes the balance check, generating system balance check passing result information; and if the system balance check fails, generating system balance check alarm information.
Optionally, the unit output out-of-limit inspection includes:
judging whether the unit plan is between the upper limit value and the lower limit value of the unit output;
if the unit is planned to be within the upper and lower limit values of the unit output, generating unit output out-of-limit inspection passing result information; and if the out-of-limit condition occurs, generating unit output out-of-limit inspection alarm information.
Optionally, the unit climbing rate test includes: the method comprises the following steps of (1) unit climbing speed inspection and unit landslide speed inspection, wherein the conditions to be met through inspection are as follows:
if the unit is in a climbing state, namely the planned output of the unit is greater than the planned output of the unit at the previous moment, the passing inspection conditions are as follows:
if the unit is in a landslide state, namely the planned output of the unit is smaller than the planned output of the unit at the previous moment, the passing inspection conditions are as follows:
wherein i is 2,3, …,12, i is the planned time point of the unit, p (i) is the planned value of the generation of the unit, RmaxFor the maximum limit value of the ramp rate of the unit, RminThe maximum limit value of the landslide rate of the unit;
if the unit climbing speed passes the inspection, generating unit climbing speed inspection passing result information; and if the unit climbing speed inspection fails, generating unit climbing speed inspection alarm information.
Optionally, the checking of the start-stop state of the unit includes:
acquiring real-time start-stop state information of a unit;
judging whether the real-time start-stop state information of the unit is consistent with the start-stop state of the real-time planned unit of the round or not;
if the unit starting and stopping state passes the inspection, generating unit starting and stopping state inspection passing result information; and if the unit starting and stopping state inspection fails, generating unit starting and stopping state inspection alarm information.
Optionally, the out-of-limit inspection of the total output of the machine group includes:
reading the planned total output of the machine group in the optimized output result file, comparing the upper limit of the planned total output of the machine group, and judging whether the planned total output of the machine group is smaller than the upper limit or not;
if the planned total output of the machine group is smaller than the upper limit of the planned total output of the machine group, the machine group total output is judged to be out of limit and checked to pass, and the machine group total output is generated.
Optionally, the cross-sectional planning load flow out-of-limit inspection includes:
reading a section calculation power flow calculation result in the optimization output result file, comparing a section upper limit and a section lower limit, and judging whether the section plan power flow is between the section upper limit and the section lower limit;
if the section plan flow is between the section upper limit and the section lower limit, judging that the section plan flow passes the inspection, and generating section plan flow inspection passing result information; and if the section flow is smaller than the section lower limit or larger than the section upper limit, judging that the section planning flow inspection does not pass, and generating section planning flow inspection alarm information.
Optionally, the testing of the smoothness of the power generation plan of the unit includes:
calculating the climbing times and the landslide times of the unit in the real-time plan of the wheel, and if the climbing times and the landslide times are equal or close, determining that the power generation plan of the unit is not stable;
the unstable judgment conditions are as follows:
|RF-DF|≤0.1；
wherein, i is 2,3, …,12, i is the unit planning time point, and p (i) is the unit power generation planning value;
if the difference value between the climbing times and the landslide times in the power generation planning of the wheel real-time unit is large, judging that the detection is passed; and if the climbing times and the landslide times in the power generation planning of the set are equal or close, judging that the test is not passed, and sending the stability test warning information of the power generation planning of the set.
Optionally, the method further includes:
acquiring result information calculated in an optimization link;
and if the optimization calculation is converged, generating inspection passing result information, and if the optimization calculation is not converged, generating alarm information.
Further, the method also comprises the following steps:
obtaining a trend convergence result of a security check link;
and if the safety check load flow calculation is converged, generating checking pass result information, and if the safety check load flow calculation is not converged, generating alarm information.
Optionally, the method further includes:
checking basic data input into the real-time planning system according to the alarm information, or processing a unit power generation plan;
optionally, the processing method includes but is not limited to:
1) the day-ahead power generation plan of the unit replaces a real-time power generation plan, so that the power generation plan of the unit is ensured to be in a reasonable range;
2) appointing the generating plan value of the unit as fixed output, and temporarily eliminating unreasonable unit plan;
3) and modifying the basic data input into the real-time planning system, and re-executing the planning of the power generation plan of the real-time unit.
Optionally, the method further includes:
establishing a unit power generation plan re-optimization flow mechanism, directly replacing corresponding data in the optimization case data set after finishing modification processing of the unit power generation plan or basic data, and setting a changed unit power generation plan as fixed output; and then, the optimization model is sent to the optimization model again for optimization, the output optimization result is used as a final unit power generation plan to send AGC, and meanwhile, the unit power generation plan is checked.
In a second aspect, the present invention further provides a device for checking a power generation plan of a real-time unit, including: the system comprises a detection task distribution module, a detection resource, a detection mathematical model and a detection result summarizing module; wherein:
the checking resources correspond to the checking tasks one by one, and the checking tasks comprise: system balance inspection, unit output out-of-limit inspection, unit climbing speed inspection, unit starting and stopping state inspection, unit group total output out-of-limit inspection, section plan tide out-of-limit inspection and unit power generation plan stability inspection;
the inspection task allocation module is used for acquiring a real-time generator set power generation plan optimization result data set and an optimization case data set corresponding to the optimization result data set; distributing and sending the acquired data set to each check resource;
the verification resources are used for verifying the data set of the real-time unit power generation plan optimization result based on the distributed data set according to the verification mathematical model to obtain a verification result;
the inspection result summarizing module is used for summarizing the inspection result corresponding to each inspection task, and finally judging that the real-time unit power generation plan optimization result is reasonable if the inspection results of all the inspection tasks are all verified; and if the verification result of any verification task is that the verification is not passed, outputting alarm information.
Compared with the prior art, the invention has the following beneficial effects: the real-time unit power generation plan warning function can be used for checking the real-time unit power generation plan before the plan is executed and informing the scheduling mechanism of the checking result, so that the scheduling mechanism and operation and maintenance personnel can conveniently and timely process the power generation plan of the abnormal unit which possibly endangers the safe operation of the power grid, the unit plan made by the real-time power generation plan system is reasonable, the performability of the unit plan is improved, and the stability of the safe operation of the power grid is improved.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
The real-time unit power generation plan compiling process comprises two links of optimization and safety check, the optimization link enables the compiled unit power generation plan to meet the safe operation requirement of a power grid by establishing an optimization model under the conditions of system balance, maximum climbing/landslide constraint, maximum/minimum output constraint, network safety constraint and the like, and finally a real-time unit power generation plan optimization result data set is output.
And the safety check ring section automatically acquires the optimized unit power generation plan, and performs the whole-network safety check calculation on the basis, so as to calculate whether equipment or a section is out of limit or not and whether power abnormality of a certain electrical node exists or not, namely the power abnormality is not converged by using a more accurate alternating current power flow algorithm.
In the real-time unit power generation plan calculation process, after the real-time planning system obtains an optimization result and outputs the optimization result, the safety check calculation is carried out, and meanwhile, the unit plan inspection is carried out.
The invention discloses a real-time unit power generation plan checking method, which is shown in figure 1 and comprises the following steps:
step 1, acquiring input data, comprising: and optimizing a result data set of the real-time unit power generation plan output in the optimizing step and an optimization case data set corresponding to the result data set.
The real-time unit power generation plan optimization result data set comprises: generating plan of the unit, optimizing convergence state and section flow.
The real-time unit power generation plan optimization result data set is directly obtained from a real-time unit power generation plan system, and the method specifically comprises the following steps: the method comprises the following steps of case number, case time interval, unit name, unit type, unit belonging area, unit belonging power plant, system load, unit initial power generation plan, unit fixed output state, tie line plan, adjustable unit set, unit rated capacity, unit minimum technical output, unit climbing rate, section name, section upper limit, section lower limit, current section trend, section-to-unit sensitivity, unit group definition and unit group output upper limit. The above necessary data for carrying out the unit power generation plan inspection is obtained from the optimized case data packet. According to the difference of the operation conditions of the power grids in various regions, data can be added according to actual conditions.
And 2, sending the data to a unit power generation plan inspection module to perform unit power generation plan inspection.
The unit power generation plan verification module comprises: the system comprises a detection task distribution module, a plurality of detection resources, a detection mathematical model and a detection result summarizing module.
Specifically, the data in step 1 is sent to a test task allocation module, the test task allocation module allocates and sends the data to a plurality of parallel test resources, each test resource calls a test mathematical model to check the input data, and the test results are sent to a test result summarizing module.
If the rationality of the generating plan of the unit is failed to be checked by a certain checking resource, the checking resource is fed back to the checking task allocation model and then is reallocated by the checking task allocation module. The information sent by the inspection task allocation module to the inspection resource comprises: input data set and inspection task number.
The check resource may be provided in one server or in a plurality of servers. And when the real-time unit power generation plan needs to be checked, calling a corresponding checking condition model in the checking mathematical model according to the checking task number, and starting checking calculation on the input data. A plurality of check resources are calculated in parallel, one check resource calculates one check task, and one check resource can execute different check tasks in sequence.
And (3) checking the unit power generation plan, wherein the checking task comprises the following steps: the method comprises the following steps of system balance inspection, unit output out-of-limit inspection, unit climbing speed inspection, unit starting and stopping state inspection, unit group total output out-of-limit inspection, section plan trend out-of-limit inspection and unit power generation plan stability inspection. The checking tasks are integrated in the checking mathematical model, and corresponding numbers are set. Each power grid can add a checking task according to actual conditions.
The details of each inspection task are as follows:
1) and (3) system balance checking: calculating the total planned output sum P (i) of all units, calculating the total planned output sum T (i) of all tie lines, obtaining the system load X (i), and judging that the system balance check is passed if the calculation result meets the following conditions:
|X(i)-(P(i)+T(i))|≤5％*X(i)
in the above formula, i is 1,2, …,12, i is the planned time point of the real-time power generation planning unit, and the power generation plan of the unit one hour in the future is calculated in one real-time planning, and five minutes is taken as one time point, and the total time point is 12.
And if the system balance inspection is passed, generating system balance inspection passing result information, and if the system balance inspection is not passed, generating system balance inspection warning information.
The system balance check alarm information comprises: and at the unbalanced time point of the system, the planned total output sum of the unit, the planned total sum of the connecting line and the system load at the moment.
2) And (3) unit output out-of-limit inspection: the upper limit of the output of the unit is the rated capacity of the unit, the lower limit of the output of the unit is the minimum technical output of the unit, the out-of-limit inspection of the output of the unit is to judge whether the unit plan is between the upper limit and the lower limit of the output of the unit, if the unit plan is within the upper limit and the lower limit of the output of the unit, the information of the result of the out-of-limit inspection of the output of the unit is generated, and if the out-of-limit condition occurs, the alarm information of the out-of-limit inspection of the output of the unit is generated.
The unit output out-of-limit inspection warning information comprises the following steps: the method comprises the following steps of generating a unit name, generating a unit ID, generating a unit plan out-of-limit time point, generating a unit maximum technical output, generating a unit minimum technical output and generating a unit plan value, wherein the unit plan value is a total plan value of 12 time points of the unit.
3) And (3) checking the climbing speed of the unit: the unit climbing speed inspection comprises unit climbing speed inspection and unit landslide speed inspection, and the conditions to be met through inspection are as follows:
if the unit is in a climbing state, namely the planned output of the unit is greater than the planned output of the unit at the previous moment, the passing inspection conditions are as follows:
if the unit is in a landslide state, namely the planned output of the unit is smaller than the planned output of the unit at the previous moment, the passing inspection conditions are as follows:
wherein i is 2,3, …,12, i is the planned time point of the unit, p (i) is the planned value of the generation of the unit, RmaxFor the maximum limit value of the ramp rate of the unit, RminThe maximum limit value of the landslide rate of the unit.
And if the unit climbing speed passes the detection, generating unit climbing speed detection passing result information, and if the unit climbing speed does not pass the detection, generating unit climbing speed detection alarm information.
The unit climbing rate inspection warning information includes: the method comprises the following steps of (1) unit name, unit ID, time points when the number of climbing/sliding of the unit is out of limit, unit climbing/sliding speed, unit power generation planned value, and specifically, the unit planned value is the total planned value of 12 time points of the unit.
4) Testing the starting and stopping states of the unit: the method comprises the steps of obtaining real-time start-stop state information of a unit through an SCADA (supervisory control and data acquisition) system, judging whether the real-time start-stop state information of the unit is consistent with the start-stop state of the real-time planned unit, judging whether the output of the unit is greater than 0MW when the start-stop state information of the unit is judged, considering that errors exist in the SCADA data acquisition, generally considering that the unit is judged to be in a start-up state at a moment when the unit is planned to be greater than 0.1MW at a certain moment, and judging that the unit is in a stop state at the moment if the unit is planned to be less than 0.1MW at the certain moment.
And if the unit starting and stopping state inspection is passed, generating unit starting and stopping state inspection passing result information, and if the unit starting and stopping state inspection is not passed, generating unit starting and stopping state inspection warning information.
The unit start-stop state inspection alarm information comprises: the method comprises the following steps of acquiring a unit name, a unit ID, a unit start-stop state and a unit power generation planned value, wherein the unit start-stop state and the unit power generation planned value are acquired by an SCADA system, and specifically, the unit planned value is a total planned value of 12 time points of the unit.
5) Checking the out-of-limit total output of the machine group: and judging whether the planned total output of the machine group is smaller than the upper limit or not by reading the planned total output of the machine group in the optimized output result file and comparing the upper limit of the planned total output of the machine group. If the planned total output of the machine group is smaller than the upper limit of the planned total output of the machine group, the machine group total output is judged to be out of limit and checked to pass, and the machine group total output is generated.
The alarm information of the out-of-limit inspection of the total output of the machine group comprises the following steps: the system comprises a machine group name, a machine group ID, a machine group composition, a machine group planned total output upper limit and each machine group power generation plan forming the machine group, wherein the machine group planned total output is a total planned value of 12 time points of the machine group, and the machine group planned value is a total planned value of 12 time points of the machine group.
6) And (3) section planning flow out-of-limit inspection: and reading a section calculation power flow calculation result in the optimization output result file, comparing the upper limit and the lower limit of the section, and judging whether the section plan power flow is between the upper limit and the lower limit of the section. If the section plan power flow is between the section upper limit and the section lower limit (namely, the section plan power flow is smaller than the section upper limit and is larger than the section lower limit), judging that the section plan power flow passes the inspection, and generating section plan power flow inspection result information; and if the section flow is smaller than the section lower limit or larger than the section upper limit, judging that the section planning flow inspection does not pass, and generating section planning flow inspection alarm information.
The section plan flow inspection alarm information comprises: the method comprises the following steps of (1) acquiring a section name, a section ID, a section plan flow, a section upper limit and a section lower limit, wherein the section plan flow is a total plan value of 12 time points of the section;
in order to further obtain the unit with large influence on the out-of-limit section, the section in the optimized case file and the sensitivity file of the unit are read and sent. The sensitivity file comprises a section ID, a unit ID and a sensitivity value of the unit to the section, and the sensitivity represents the influence of the output of the unit on the section. The higher the sensitivity of the unit under a certain section, the larger the influence of the output force of the unit on the section. And screening out the units with the sensitivity closer to the out-of-limit section, and printing the unit names, unit IDs and unit power generation plans of the units into logs and alarm information.
7) Testing the stability of the unit power generation plan: the ideal unit power plan is smooth, either continuously maintaining the same value, or continuously rising or falling. And calculating the climbing times and the landslide times of the unit in the real-time plan of the wheel, and if the climbing times and the landslide times are equal or close, determining that the power generation plan of the unit is not stable. The unstable judgment conditions are as follows:
|RF-DF|≤0.1；
considering the real-time planning for 12 periods, in order to increase the robustness of the test, the test passing condition can be properly relaxed. If the difference value between the climbing times and the landslide times in the power generation planning of the wheel real-time unit is large, judging that the detection is passed; and if the climbing times and the landslide times in the generation planning of the set are equal or close (namely the unstable judgment conditions are met), judging that the detection is failed, and sending unit generation planning stability detection alarm information.
The unit power generation plan stationarity checking alarm information comprises the following steps: the method comprises the following steps of unit name, unit ID, unit plan value, maximum generating capacity of the unit and minimum generating capacity of the unit.
And (3) after the power generation plan of the unit is inspected by the inspection resource, generating inspection result information, and if the inspection alarm condition exists, sending the inspection result and the alarm information I to the inspection result summarizing module in the step 3.
And step 3, the inspection result summarizing module summarizes the inspection results, if alarm information exists, namely the power generation plan of a certain unit does not meet the inspection conditions, the printed logs are saved as the basis of analyzing the problems, and the dispatching desk is informed of the alarm information.
If the verification results of all the verification tasks are verified, finally judging that the real-time unit power generation plan optimization result is reasonable; and if the verification result of any verification task is that the verification is not passed, outputting alarm information.
The real-time unit power generation planning process comprises two links of optimization and safety check, and the optimization link enables the unit power generation plan to meet the safe operation requirement of the power grid by establishing an optimization model under the conditions of meeting system balance, maximum climbing/landslide constraint, maximum/minimum output constraint, network safety constraint and the like. When the optimization model cannot calculate the generating plan of the unit, the optimization link outputs a file containing optimization non-convergence information. The optimization is not converged, and when the optimization is not converged, the output unit power generation plan is the last link, namely the initial power generation plan output by the initial planning link.
And the safety check ring section automatically acquires the optimized unit power generation plan, and performs the whole-network safety check calculation on the basis, so as to calculate whether equipment or a section is out of limit or not and whether power abnormality of a certain electrical node exists or not, namely the power abnormality is not converged by using a more accurate alternating current power flow algorithm.
If the optimization result is not converged or the safety check result is not converged, the output unit power generation plan is considered to have unreasonable parts and relevant personnel are required to investigate the reason.
Further, the inspection result summarizing module automatically acquires result information calculated in an optimization link, generates inspection passing result information if the optimization calculation is converged, and generates alarm information if the optimization calculation is not converged; the optimized calculation of the alarm information comprises the following steps: and optimizing and calculating the non-convergence prompt.
Further, since the checking step and the security check step are performed synchronously, the security check step needs to wait for the security check step to complete the calculation in order to obtain the calculation result of the security check step. After the safety check link completes calculation, the check result summarizing module acquires a safety check load flow convergence result, if the safety check load flow calculation converges, checking passing result information is generated, and if the safety check load flow calculation does not converge, alarm information is generated; the safety check load flow calculation alarm information comprises the following steps: and prompting that the load flow calculation is not converged, and obtaining the electrical node information that the load flow calculation is not converged.
The specific alarm information is notified to the dispatching desk through a message bus mode, and the alarm information comprises: the system imbalance alarm, the unit output out-of-limit alarm, the climbing rate out-of-limit alarm, the unit start-stop state abnormity alarm, the unit group total planned output out-of-limit alarm, the section planned tide out-of-limit alarm, the unit power generation plan unstable alarm, the optimization non-convergence alarm and the safety check non-convergence alarm.
Furthermore, by inquiring the electrical nodes with non-convergence trend, the related personnel can further analyze the reason causing the non-convergence of the safety check calculation.
And the test result summarizing program sends the test result to the dispatching desk according to the test result, and simultaneously generates a log file which is stored in the real-time planning system server to provide analysis basis for operation and maintenance personnel.
And 4, after the power generation plan of the unit is checked, if the power generation plan of a certain unit is unreasonable, checking basic data input into the real-time planning system according to the checking information or processing the power generation plan of the unit.
Further, the processing methods include, but are not limited to: 1) the day-ahead power generation plan of the unit replaces a real-time power generation plan, so that the power generation plan of the unit is ensured to be in a reasonable range; 2) appointing the generating plan value of the unit as fixed output, and temporarily eliminating unreasonable unit plan; 3) and modifying the basic data input into the real-time planning system, and re-executing the planning of the power generation plan of the real-time unit.
Furthermore, a unit power generation plan re-optimization flow mechanism is established, after modification processing of the unit power generation plan or boundary data is completed, corresponding data in the optimized case data set can be directly replaced, the changed unit power generation plan is set to be fixed output, and optimization modification of the unit plan value by an optimization model is avoided. And then, the optimization model is sent to the optimization model again for optimization, the output optimization result is used as a final unit power generation plan to send AGC, and meanwhile, the unit power generation plan is checked.
The real-time unit power generation plan warning function can be used for checking the real-time unit power generation plan before the plan is executed and informing the scheduling mechanism of the checking result, so that the scheduling mechanism and operation and maintenance personnel can conveniently and timely process the power generation plan of the abnormal unit which possibly endangers the safe operation of the power grid, the unit plan made by the real-time power generation plan system is reasonable, the performability of the unit plan is improved, and the stability of the safe operation of the power grid is improved.
Example 2
Based on the same inventive concept as embodiment 1, the invention provides a real-time unit power generation plan checking device, which comprises: the system comprises a detection task distribution module, a detection resource, a detection mathematical model and a detection result summarizing module; wherein:
the checking resources correspond to the checking tasks one by one, and the checking tasks comprise: system balance inspection, unit output out-of-limit inspection, unit climbing speed inspection, unit starting and stopping state inspection, unit group total output out-of-limit inspection, section plan tide out-of-limit inspection and unit power generation plan stability inspection;
the inspection task allocation module is used for acquiring a real-time generator set power generation plan optimization result data set and an optimization case data set corresponding to the optimization result data set; distributing and sending the acquired data set to each check resource;
the verification resources are used for verifying the data set of the real-time unit power generation plan optimization result based on the distributed data set according to the verification mathematical model to obtain a verification result;
the inspection result summarizing module is used for summarizing the inspection result corresponding to each inspection task, and finally judging that the real-time unit power generation plan optimization result is reasonable if the inspection results of all the inspection tasks are all verified; and if the verification result of any verification task is that the verification is not passed, outputting alarm information.
Specific embodiments of the modules in the apparatus of the present invention are described in the processing of the steps of the method of example 1.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A real-time unit power generation plan verification method is characterized by comprising the following processes:
acquiring a real-time unit power generation plan optimization result data set and an optimization case data set corresponding to the optimization result data set;
and (3) inspecting the real-time generator set power generation plan optimization result data set according to the optimization case data set, wherein the inspection tasks comprise: system balance inspection, unit output out-of-limit inspection, unit climbing speed inspection, unit starting and stopping state inspection, unit group total output out-of-limit inspection, section plan tide out-of-limit inspection and unit power generation plan stability inspection; obtaining a test result corresponding to each test task;
summarizing the inspection result corresponding to each inspection task, and finally judging that the real-time unit power generation plan optimization result is reasonable if the inspection results of all the inspection tasks are all passed through the inspection; and if the verification result of any verification task is that the verification is not passed, outputting alarm information.
2. The method for verifying the power generation plan of the real-time unit as claimed in claim 1, wherein the verification task comprises a corresponding verification task number and a verification resource, the verification resource comprises a verification mathematical model corresponding to the verification task, and the data set of the optimization result of the power generation plan of the real-time unit is verified according to the verification mathematical model.
3. The method for real-time unit power generation plan verification of claim 1, wherein the verification tasks are performed in parallel.
4. The real-time unit power generation plan verification method according to claim 1, wherein the system balance verification comprises:
calculating the total planned output sum P (i) of all units, calculating the total planned output sum T (i) of all connecting lines, obtaining the system load X (i), and judging that the system balance check is passed if the calculation result meets the following conditions:
|X(i)-(P(i)+T(i))|≤5％*X(i)
in the above formula, i is 1,2, …,12, i is the planning time point of the real-time power generation planning unit;
if the system passes the balance check, generating system balance check passing result information; if the system balance check fails, generating system balance check alarm information;
the unit output out-of-limit inspection comprises the following steps:
judging whether the unit plan is between the upper limit value and the lower limit value of the unit output;
if the unit is planned to be within the upper and lower limit values of the unit output, generating unit output out-of-limit inspection passing result information; if the out-of-limit condition occurs, generating unit output out-of-limit inspection alarm information;
the unit climbing speed inspection includes: the method comprises the following steps of (1) unit climbing speed inspection and unit landslide speed inspection, wherein the conditions to be met through inspection are as follows:
if the unit is in a climbing state, namely the planned output of the unit is greater than the planned output of the unit at the previous moment, the passing inspection conditions are as follows:
if the unit is in a landslide state, namely the planned output of the unit is smaller than the planned output of the unit at the previous moment, the passing inspection conditions are as follows:
wherein i is 2,3, …,12, i is the planned time point of the unit, p (i) is the planned value of the generation of the unit, RmaxFor the maximum limit value of the ramp rate of the unit, RminThe maximum limit value of the landslide rate of the unit;
if the unit climbing speed passes the inspection, generating unit climbing speed inspection passing result information; if the unit climbing speed test does not pass, generating unit climbing speed test alarm information;
the unit opens and stops state inspection, include:
acquiring real-time start-stop state information of a unit;
judging whether the real-time start-stop state information of the unit is consistent with the start-stop state of the real-time planned unit of the round or not;
if the unit starting and stopping state passes the inspection, generating unit starting and stopping state inspection passing result information; if the unit start-stop state inspection fails, generating unit start-stop state inspection alarm information;
the machine group total output out-of-limit inspection comprises the following steps:
reading the planned total output of the machine group in the optimized output result file, comparing the upper limit of the planned total output of the machine group, and judging whether the planned total output of the machine group is smaller than the upper limit or not;
if the planned total output of the machine group is smaller than the upper limit of the planned total output of the machine group, judging that the planned total output of the machine group passes the out-of-limit inspection, and generating the result information of the out-of-limit inspection of the planned total output of the machine group;
the cross-section planning flow out-of-limit inspection comprises the following steps:
reading a section calculation power flow calculation result in the optimization output result file, comparing a section upper limit and a section lower limit, and judging whether the section plan power flow is between the section upper limit and the section lower limit;
if the section plan flow is between the section upper limit and the section lower limit, judging that the section plan flow passes the inspection, and generating section plan flow inspection passing result information; if the section flow is smaller than the section lower limit or larger than the section upper limit, judging that the section plan flow inspection does not pass, and generating section plan flow inspection alarm information;
the unit power generation plan stationarity inspection includes:
calculating the climbing times and the landslide times of the unit in the real-time plan of the wheel, and if the climbing times and the landslide times are equal or close, determining that the power generation plan of the unit is not stable;
the unstable judgment conditions are as follows:
|RF-DF|≤0.1；
wherein, i is 2,3, …,12, i is the unit planning time point, and p (i) is the unit power generation planning value;
if the difference value between the climbing times and the landslide times in the power generation planning of the wheel real-time unit is large, judging that the detection is passed; and if the climbing times and the landslide times in the power generation planning of the set are equal or close, judging that the test is not passed, and sending the stability test warning information of the power generation planning of the set.
5. The real-time unit power generation plan verification method according to claim 1, further comprising:
acquiring result information calculated in an optimization link;
and if the optimization calculation is converged, generating inspection passing result information, and if the optimization calculation is not converged, generating alarm information.
6. The real-time unit power generation plan verification method according to claim 1, further comprising:
obtaining a trend convergence result of a security check link;
and if the safety check load flow calculation is converged, generating checking pass result information, and if the safety check load flow calculation is not converged, generating alarm information.
7. The real-time unit power generation plan verification method according to claim 1, further comprising:
and checking basic data input into the real-time planning system according to the alarm information, or processing a unit power generation plan.
8. The real-time unit power generation plan verification method according to claim 7, wherein the processing method comprises:
1) the day-ahead power generation plan of the unit replaces a real-time power generation plan, so that the power generation plan of the unit is ensured to be in a reasonable range;
2) appointing the generating plan value of the unit as fixed output, and temporarily eliminating unreasonable unit plan;
3) and modifying the basic data input into the real-time planning system, and re-executing the planning of the power generation plan of the real-time unit.
9. The real-time unit power generation plan verification method according to claim 8, further comprising:
after the modification processing of the generating plan or the basic data of the unit is finished, directly replacing the corresponding data in the optimized case sending data set, and setting the generating plan of the unit with change as fixed output;
and (4) sending the data set into an optimization link again for optimization processing, taking the output optimization result as a final unit power generation plan to issue AGC, and simultaneously, checking the unit power generation plan.
10. A real-time unit power generation plan verifying attachment, characterized by comprising: the system comprises a detection task distribution module, a detection resource, a detection mathematical model and a detection result summarizing module; wherein:
the checking resources correspond to the checking tasks one by one, and the checking tasks comprise: system balance inspection, unit output out-of-limit inspection, unit climbing speed inspection, unit starting and stopping state inspection, unit group total output out-of-limit inspection, section plan tide out-of-limit inspection and unit power generation plan stability inspection;
the inspection task allocation module is used for acquiring a real-time generator set power generation plan optimization result data set and an optimization case data set corresponding to the optimization result data set; distributing and sending the acquired data set to each check resource;
the verification resources are used for verifying the data set of the real-time unit power generation plan optimization result based on the distributed data set according to the verification mathematical model to obtain a verification result;
the inspection result summarizing module is used for summarizing the inspection result corresponding to each inspection task, and finally judging that the real-time unit power generation plan optimization result is reasonable if the inspection results of all the inspection tasks are all verified; and if the verification result of any verification task is that the verification is not passed, outputting alarm information.
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