CN112288596A - Electric power spot market operation standby modeling method and related device - Google Patents
Electric power spot market operation standby modeling method and related device Download PDFInfo
- Publication number
- CN112288596A CN112288596A CN202011313851.3A CN202011313851A CN112288596A CN 112288596 A CN112288596 A CN 112288596A CN 202011313851 A CN202011313851 A CN 202011313851A CN 112288596 A CN112288596 A CN 112288596A
- Authority
- CN
- China
- Prior art keywords
- unit
- standby
- limited value
- preset
- newly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 60
- 238000004364 calculation method Methods 0.000 claims abstract description 45
- 238000012216 screening Methods 0.000 claims abstract description 44
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 230000035945 sensitivity Effects 0.000 claims description 61
- 230000001174 ascending effect Effects 0.000 claims description 12
- 230000005283 ground state Effects 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 8
- 238000005457 optimization Methods 0.000 claims description 7
- 238000012163 sequencing technique Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/067—Enterprise or organisation modelling
Landscapes
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Engineering & Computer Science (AREA)
- Strategic Management (AREA)
- Economics (AREA)
- Entrepreneurship & Innovation (AREA)
- General Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Theoretical Computer Science (AREA)
- Marketing (AREA)
- General Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Development Economics (AREA)
- Quality & Reliability (AREA)
- Operations Research (AREA)
- Educational Administration (AREA)
- Game Theory and Decision Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application discloses a power spot market operation standby modeling method and a related device, wherein a power spot market day-ahead safety constraint unit combination clearing model constructed based on preset basic data is solved according to preset safety constraint conditions; performing limited value distribution calculation according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by the power transmission network and an updated unit combination, and calculating a system standby network limited value; screening a newly-started unit in a newly-started state according to the updated unit combination, and calculating a newly-started standby limited value; calculating the standby limited value of the system according to the limited value of the standby network of the system and the limited value of the newly opened standby network; and if the preset cutoff condition is not met, replacing the system standby limited value with the initial system standby limited value, and returning to the model solving step until a clear model of the target unit combination is obtained. The technical problems that the running spare capacity of the existing model becomes invalid spare and the reliability of the system is reduced are solved.
Description
Technical Field
The application relates to the field of electric power spot market, in particular to an electric power spot market operation standby modeling method and a related device.
Background
The reserve capacity resource is mainly used for dealing with active imbalance possibly generated during system operation so as to ensure safe and stable operation of a power grid. The reasonable configuration of the reserve capacity can promote the coordination of the operation economy and reliability of the power grid. Power market innovation has gradually entered deepwater zones, and efficient invocation of reserve capacity has become one of the major research issues in the field in the power spot market environment.
In a traditional power dispatching mode, three-public dispatching/energy-saving dispatching is taken as a target, and system dispatching personnel determine a unit combination based on historical operation experience so as to meet corresponding operation standby requirements and section flow constraints. However, in the electric power spot market environment, the unit combination is determined by a security constrained unit restriction (SCUC) module in the market clearing algorithm, and although the conventional operation standby restriction and the section flow restriction are considered in the SCUC model, when a load peak is faced or an output resistance plug is serious and the operation standby corresponding to the unit combination decided by the SCUC cannot be called, the reserved operation standby capacity becomes an invalid standby, and the reliability of the system cannot be guaranteed.
Disclosure of Invention
The application provides a power spot market operation standby modeling method and a related device, which are used for solving the technical problems that the operation standby capacity is invalid and standby and the system reliability is reduced due to the fact that the operation standby capacity cannot be called when the existing model is in a load peak or the output resistor is relatively serious.
In view of the above, a first aspect of the present application provides a method for modeling a power spot market operation backup, including:
solving a power spot market day-ahead safety constraint unit combination clearing model constructed based on preset basic data according to preset safety constraint conditions to obtain a unit combination, unit output information and a power transmission section flow;
the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data are acquired, and the preset safety constraint condition is configured according to the standby limited value of the initial system;
performing limited value distribution calculation according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by a power transmission network and an updated unit combination, and calculating a system standby network limited value according to the unit standby network limited value;
screening a newly-started unit in a newly-started state according to the updated unit combination, and calculating a corresponding newly-started standby limited value;
calculating a system standby limited value according to the system standby network limited value and the newly-opened standby limited value;
if the preset cut-off condition is not met, replacing the initial system standby limited value with the system standby limited value, returning to the step of solving a day-ahead safety constraint unit combination clearing model of the electric power spot market constructed on the basis of preset basic data according to the preset safety constraint condition until the preset cut-off condition is met, and obtaining a target unit combination clearing model;
the preset cut-off condition is as follows: and the iteration times are greater than or equal to the maximum threshold, or the updated unit combination meets the preset positive and standby constraint conditions of the system under the condition that no new out-of-limit section exists.
Optionally, the performing, according to the unit combination, the unit output information, and the power transmission section flow, limited value distribution calculation to obtain a unit standby network limited value limited by the power transmission network and an updated unit combination, and calculating a system standby network limited value according to the unit standby network limited value includes:
carrying out tidal current load screening operation according to the power transmission section tidal current and a tidal current threshold value to obtain a section set, and carrying out sensitivity screening operation according to a unit combination and a sensitivity threshold value to obtain a unit set, wherein the unit set comprises a plurality of units;
arranging the section sets in an ascending order according to the corresponding total number of the units;
calculating an initial standby network limited value corresponding to each section according to an ascending order, distributing the initial standby network limited value to a corresponding unit according to a preset unit standby capacity, and obtaining the preset unit standby capacity according to the unit output information;
judging whether the initial standby network limited value distributed to each unit is larger than the maximum positive standby limited value or not, if so, calculating the exceeding limited value, distributing the exceeding limited value to other units, and deleting the current unit from the unit set to obtain an updated unit combination and the unit standby network limited value;
and summing all the unit standby network limited values to obtain a system standby network limited value.
Optionally, the performing a tidal current load screening operation according to the power transmission section tidal current and the tidal current threshold value to obtain a section set, and performing a sensitivity screening operation according to the unit combination and the sensitivity threshold value to obtain a unit set includes:
carrying out load rate calculation according to the power transmission section load flow to obtain the ground state load flow rate of the power transmission section;
acquiring a power transmission section under the condition that the ground state power flow load rate is greater than or equal to a power flow threshold value to form a section set;
carrying out sensitivity calculation according to the unit combination to obtain the relative sensitivity of the section to which each unit belongs;
and acquiring the unit under the condition that the relative sensitivity is greater than or equal to the sensitivity threshold value to form a unit set.
Optionally, the screening out a newly-started unit in a newly-started state according to the updated unit combination, and calculating a corresponding newly-started standby limited value includes:
screening out a newly-started unit in a newly-started state according to the updated unit combination;
and calculating a newly-opened standby limited value corresponding to the newly-opened unit according to the preset percentage of the maximum adjustable output of the unit.
The second aspect of the present application provides a power spot market operation standby modeling apparatus, including:
the modeling solving module is used for solving a unit combination clearing model of the electric power spot market constructed based on the preset basic data according to preset safety constraint conditions to obtain a unit combination, unit output information and a power transmission section flow;
the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data are acquired, and the preset safety constraint condition is configured according to the standby limited value of the initial system;
the optimization calculation module is used for performing limited value distribution calculation according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by a power transmission network and an updated unit combination, and calculating a system standby network limited value according to the unit standby network limited value;
the screening calculation module is used for screening a newly started unit in a newly started state according to the updated unit combination and calculating a corresponding newly started standby limited value;
the system limited calculation module is used for calculating a system standby limited value according to the system standby network limited value and the newly-opened standby limited value;
the judgment iteration module is used for replacing the initial system standby limited value with the system standby limited value if the preset cut-off condition is not met, and triggering the modeling solving module until the preset cut-off condition is met to obtain a target unit combination clear model;
the preset cut-off condition is as follows: and the iteration times are greater than or equal to the maximum threshold, or the updated unit combination meets the preset positive and standby constraint conditions of the system under the condition that no new out-of-limit section exists.
Optionally, the optimization calculation module includes:
the screening submodule is used for carrying out tidal current load screening operation according to the power transmission section tidal current and a tidal current threshold value to obtain a section set, and carrying out sensitivity screening operation according to a unit combination and a sensitivity threshold value to obtain a unit set, wherein the unit set comprises a plurality of units;
the sequencing submodule is used for carrying out ascending sequencing on the section set according to the corresponding total number of the units;
the distribution submodule is used for calculating an initial standby network limited value corresponding to each section according to an ascending order, distributing the initial standby network limited value to a corresponding unit according to a preset unit standby capacity, and obtaining the preset unit standby capacity according to the unit output information;
the judgment submodule is used for judging whether the initial standby network limited value distributed to each unit is larger than the maximum positive standby limited value or not, if so, calculating the exceeding limited value, distributing the exceeding limited value to other units, and deleting the current unit from the unit set to obtain an updated unit combination and the unit standby network limited value;
and the summation submodule is used for summing all the unit standby network limited values to obtain a system standby network limited value.
Optionally, the screening submodule is specifically configured to:
carrying out load rate calculation according to the power transmission section load flow to obtain the ground state load flow rate of the power transmission section;
acquiring a power transmission section under the condition that the ground state power flow load rate is greater than or equal to a power flow threshold value to form a section set;
carrying out sensitivity calculation according to the unit combination to obtain the relative sensitivity of the section to which each unit belongs;
and acquiring the unit under the condition that the relative sensitivity is greater than or equal to the sensitivity threshold value to form a unit set.
Optionally, the screening calculation module is specifically configured to:
screening out a newly-started unit in a newly-started state according to the updated unit combination;
and calculating a newly-opened standby limited value corresponding to the newly-opened unit according to the preset percentage of the maximum adjustable output of the unit.
A third aspect of the present application provides a power spot market operational backup modeling apparatus, the apparatus comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the power spot market operational backup modeling method of the first aspect according to instructions in the program code.
A fourth aspect of the present application provides a computer readable storage medium for storing program code for performing the power spot market operational backup modeling method of the first aspect.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides a power spot market operation standby modeling method, which comprises the following steps: solving a power spot market day-ahead safety constraint unit combination clearing model constructed based on preset basic data according to preset safety constraint conditions to obtain a unit combination, unit output information and a power transmission section flow; the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data are configured according to the standby limited value of the initial system under the preset safety constraint condition; performing limited value distribution calculation according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by the power transmission network and an updated unit combination, and calculating a system standby network limited value according to the unit standby network limited value; screening a newly-started unit in a newly-started state according to the updated unit combination, and calculating a corresponding newly-started standby limited value; calculating the standby limited value of the system according to the limited value of the standby network of the system and the limited value of the newly opened standby network; if the preset cut-off condition is not met, replacing the initial system standby limited value with the system standby limited value, returning to the step of solving the electric power spot market day-ahead safety constraint unit combination clearing model constructed based on the preset basic data according to the preset safety constraint condition until the preset cut-off condition is met, and obtaining a target unit combination clearing model; the preset cut-off conditions are as follows: and the iteration times are larger than or equal to the maximum threshold, or the unit combination is updated to meet the preset positive and standby constraint conditions of the system under the condition that no new out-of-limit section exists.
The modeling method for the operation standby of the power spot market not only considers the limited value of the standby network of the system, but also considers the limited value of the newly started standby unit under the condition that the operation standby possibly cannot be effectively provided; when the limit value of the standby network of the computing system is calculated, the unit combination is updated in time, so that the currently researched unit combination is a unit capable of providing effective standby; finally, judging whether the current unit combination and the corresponding system standby limited value meet preset cut-off conditions or not in an iterative judgment mode, if so, obtaining a target unit combination clear model, and if not, continuing iterative operation to update the unit and the system standby limited value; therefore, the finally obtained unit combination can provide effective operation reserve capacity, and the reliability of the system is ensured. Therefore, the method and the device can solve the technical problems that the operation standby capacity is invalid and standby and the system reliability is reduced due to the fact that the operation standby capacity cannot be called when the load peak or the output resistor plug of the existing model is serious.
Drawings
Fig. 1 is a schematic flow chart of a method for modeling standby operation of a power spot market according to an embodiment of the present disclosure;
fig. 2 is another schematic flow chart of a power spot market operation standby modeling method according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an electric power spot market operation standby modeling apparatus according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For easy understanding, please refer to fig. 1, a first embodiment of a power spot market operation standby modeling method provided by the present application includes:
It should be noted that the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data, and the preset safety constraint condition is configured according to the standby limited value of the initial system. The preset basic data not only comprises the data, but also can obtain the junctor data according to the subsequent calculation requirements; the system data mainly comprises time interval information, system load, system positive and negative standby requirements, a system standby limited initial value and the like; the unit data mainly comprises unit basic information, unit calculation parameters, unit starting quotation, unit energy quotation, unit initial state, unit appointed state, unit power constraint, unit climbing speed, unit minimum continuous startup and shutdown time, unit daily maximum starting times, unit reserve capacity deduction proportion and the like; the load data mainly comprises bus load basic information, bus load prediction and other data; the section data mainly comprises section basic information, section calculation parameters, section containing equipment, section cutting load power, section transmission limit and other data; the preset sensitivity data mainly comprises data such as basic information of the topological nodes, mapping of equipment and the topological nodes, sensitivity of section flow relative to each topological node and the like; the tie line data mainly includes tie line basic information, tie line planned power, and other data. These data are obtained according to modeling and calculation requirements, and can be increased or decreased according to requirements in practical application, which is not described herein again.
And the winning power of the unit corresponding to the unit output information main value unit.
The initial system standby limited value is an initially set system standby deduction value, and in this embodiment, the limited value of the system positive standby is mainly considered, and the limited value of the system negative standby is not considered.
102, limited value distribution calculation is carried out according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by the power transmission network and an updated unit combination, and the system standby network limited value is calculated according to the unit standby network limited value.
It should be noted that in the limited value distribution calculation process, the network limited values of the unit allocations corresponding to all the sections need to be calculated, and then the unit combination is updated according to an actual situation, where the actual situation refers to whether the spare capacity of the unit is enough to accept the allocated network limited values, and if the spare capacity of the unit is not enough to accept the allocated network limited values, the unit combination needs to be adjusted to obtain an updated unit combination. And finally, obtaining the unit standby network limited values of all the sections, and summing the unit standby network limited values to obtain the system standby network limited value. The limitation of the power transmission network means that the section and the unit are selected in the operation, and the obtained updated unit combination and section take network reduction into account.
And 103, screening a newly started unit in a newly started state according to the updated unit combination, and calculating a corresponding newly started standby limited value.
It should be noted that if some newly started units exist in the updated unit combination, the newly started units cannot provide effective operation backup in time, that is, the theoretical limited value of the updated unit combination may be larger than the actual limited value, and a true limited value can be obtained only after the new start state is considered.
And 104, calculating the system standby limited value according to the system standby network limited value and the newly opened standby limited value.
It should be noted that the system standby limited value is the sum of the system standby network limited value and the newly-opened standby limited value.
And 105, if the preset cut-off condition is not met, replacing the initial system standby limited value with the system standby limited value, returning to the step 101 until the preset cut-off condition is met, and obtaining the combined clear model of the target unit.
It should be noted that the preset cutoff conditions are as follows: and the iteration times are larger than or equal to the maximum threshold, or the unit combination is updated to meet the preset positive and standby constraint conditions of the system under the condition that no new out-of-limit section exists. The influence of replacing the initial system standby limited value with the system standby limited value is that the preset safety constraint condition of the clear model is changed, the unit combination, the unit output information and the power transmission section trend obtained by solving the model are different, the model is updated, the finally obtained model is more in line with the actual requirement, the standby limited value of each unit is in the unit bearing range, the operation standby can be provided according to the actual standby capacity, and the condition that the operation standby capacity cannot be called does not exist. The condition that no new out-of-limit section exists shows that the limited value does not exceed the actual spare capacity of the unit.
According to the modeling method for the operation standby of the power spot market, not only is the limited value of a system standby network considered, but also the limited value of the newly-started standby unit under the condition that the operation standby possibly cannot be effectively provided is considered; when the limit value of the standby network of the computing system is calculated, the unit combination is updated in time, so that the currently researched unit combination is a unit capable of providing effective standby; finally, judging whether the current unit combination and the corresponding system standby limited value meet preset cut-off conditions or not in an iterative judgment mode, if so, obtaining a target unit combination clear model, and if not, continuing iterative operation to update the unit and the system standby limited value; therefore, the finally obtained unit combination can provide effective operation reserve capacity, and the reliability of the system is ensured. Therefore, the technical problems that the operation standby capacity is invalid and the system reliability is reduced due to the fact that the operation standby capacity cannot be called when the load peak or the output resistor plug of the existing model is serious can be solved.
For easy understanding, please refer to fig. 2, the present application provides a second embodiment of a power spot market operation standby modeling method, including:
step 201, solving a unit combination clearing model of the electric power spot market constructed based on the preset basic data according to preset safety constraint conditions to obtain a unit combination, unit output information and a power transmission section flow.
It should be noted that the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data, and the preset safety constraint condition is configured according to the standby limited value of the initial system. The specific process of acquiring data is similar to step 101, and is not described herein again.
202, carrying out tidal current load screening operation according to the tidal current of the transmission section and a tidal current threshold value to obtain a section set, and simultaneously carrying out sensitivity screening operation according to the unit combination and a sensitivity threshold value to obtain a unit set, wherein the unit set comprises a plurality of units.
It should be noted that the specific process is as follows: carrying out load rate calculation according to the power transmission section load flow to obtain the ground state load flow rate of the power transmission section; acquiring a power transmission section under the condition that the ground state tidal current load rate is greater than or equal to a tidal current threshold value to form a section set; carrying out sensitivity calculation according to the unit combination to obtain the relative sensitivity of the section to which each unit belongs; and acquiring the unit under the condition that the relative sensitivity is greater than or equal to the sensitivity threshold value to form a unit set.
Generally, the power flow threshold is set to 90%, and the sensitivity threshold is set to 0.2, which can be adjusted according to actual conditions. The purpose of screening the transmission sections and the unit combinations is that the unit combinations and sections under study are all factors for considering the limitation of the transmission network.
And 203, arranging the section sets in an ascending order according to the corresponding total number of the units.
It should be noted that each section has a corresponding unit, and the number of units may be different, and the units under each section are sorted according to the number of units under each section, which is convenient for subsequent calculation.
And 204, calculating the initial standby network limited value corresponding to each section according to the ascending order, distributing the initial standby network limited value to the corresponding unit according to the standby capacity of the preset unit, and obtaining the standby capacity of the preset unit according to the output information of the unit.
It should be noted that, assuming that the current section is i, the initial standby network limited value of the current section i is calculated, and the calculation process is as follows:
wherein the content of the first and second substances,
the total standby network for section s during time t is limited.
In the expression, the physical meaning of the molecule is that the threshold-crossing amount of the section tidal current is obtained when the sensitivity of the section is larger than or equal to a certain threshold value, and the threshold-crossing amount is divided by the average sensitivity of the section-related units with the adjustable capacity weighting, and the average sensitivity is converted into the total standby network limited value of the units. When the unit standby limited quantity is positive, the unit standby limited quantity is counted as deduction, otherwise, the deduction is zero.
N1The total number of the units is that the sensitivity of the related units of the standby deduction section is more than or equal to the sensitivity threshold; n is a radical of2The total number of the units is that the sensitivity of the related units of the standby deduction section is smaller than the sensitivity threshold; alpha is alphai,tStarting and stopping a unit i at a time t;
the maximum adjustable output of the unit i in the time period t (the minimum value of rated capacity, height-limited capacity, upper limit of heat supply, upper limit of climbing, upper limit of AGC (automatic gain control) and the winning capacity of frequency modulation is obtained); gs-iFor the generator output of the section s of the node pair where the unit i is locatedOutput power transfer profile factor (sensitivity); gs-kThe distribution factor of the output power transfer of the generator is the node k to the section s; k is the number of nodes of the system; dk,tThe bus load value of the node k in the period t (the equivalent of the tie line injection is the bus load); ps maxThe maximum limit of the tidal current transmission of the section s is set; avg (G)s-i) And representing the weighted sensitivity average value of the relevant unit of the section s, and carrying out weighted calculation on the sensitivity of the relevant unit in the startup state in the nth iterative calculation according to the spare capacity to obtain the average value.
The assignment of the initial standby network restricted value to the corresponding unit belongs to a temporarily assigned restricted value, and it cannot be determined that the standby capacity of all units can withstand the assigned amount, and further determination is required.
And step 205, judging whether the initial standby network limited value allocated to each unit is larger than the maximum positive standby limited value, if so, calculating the exceeding limited value, allocating the exceeding limited value to other units, and deleting the current unit from the unit set to obtain the updated unit combination and the unit standby network limited value.
And step 206, summing all the unit standby network limited values to obtain a system standby network limited value.
It should be noted that the maximum positive reserve limited amount is the limit value of the unit, if the limit value is exceeded, the allocation task of the limited value is not completed completely, and the redundant limited amount needs to be allocated to other units or units with other cross sections, and the current unit reserve capacity is equivalent to the fully occupied capacity and cannot accept the allocated limited value any more, so the current unit needs to be deleted from the unit set for researching the reserve limitation, thereby achieving the purpose of updating the unit. The limited value of the standby network of the unit is the final limited value of the standby network of the unit after the limited value is distributed. And summing the limited values of the unit standby network of each unit to obtain the limited value of the system standby network.
And step 207, screening the newly started unit in the newly started state according to the updated unit combination.
And 208, calculating a newly-opened standby limited value corresponding to the newly-opened unit according to the preset percentage of the maximum adjustable output of the unit.
It should be noted that if some newly started units exist in the updated unit combination, the units cannot provide effective operation standby in time; therefore, the newly-opened standby limited value needs to be calculated for the newly-opened coal-fired unit, the maximum adjustable output of the unit can be directly obtained by processing according to the obtained preset basic data, and the preset percentage is generally set according to the actual situation and is not limited herein.
And step 209, calculating the system standby limited value according to the system standby network limited value and the newly opened standby limited value.
And step 210, if the preset cut-off condition is not met, replacing the system standby limited value with the initial system standby limited value, returning to the step 201 until the preset cut-off condition is met, and obtaining the combined clear model of the target unit.
It should be noted that the preset cutoff conditions are as follows: the iteration times are greater than or equal to the maximum threshold, or under the condition that no newly-increased out-of-limit section exists, the updated unit combination meets the preset system positive and standby constraint conditions, which can be expressed as:
wherein N is the total number of the units; n is a radical of0The total number of the units except for the debugging unit and the newly-opened coal-fired unit is counted;
newly starting the number of coal-fired units in the time t in the nth iteration optimization result; alpha is alphai,tRepresenting the starting and stopping states of the unit i in the time period t, alphai,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
the maximum adjustable output of the unit i in the time period t (when the unit i is a debugging unit,
force is applied for debugging thereof);
calculating a standby network limited value for the unit i in a time period t;
limiting values of all unit standby networks in the period t; c. C2Is constant (parameters can be defined); dtA system load for a time period t, the load having deducted the tie line net input power;
the positive spare capacity requirement of the system for time period t.
The iteration times are updated once every time the step 201 is returned, the iteration times are added by 1, and finally the iteration times are compared with the maximum iteration times, namely the maximum threshold value, and the maximum iteration times are also one of the criteria for stopping the iteration. The iteration operation can be stopped to obtain the final model only by meeting one of the preset cutoff conditions. And according to the combined clear model of the target unit, the data of the start-stop state of the unit, the output power of the unit, the standby limited value of the system and the like in each time period can be obtained.
For ease of understanding, referring to fig. 3, the present application further provides an embodiment of a power spot market operational backup modeling apparatus, comprising:
the modeling solving module 301 is used for solving a unit combination clearing model of the electric power spot market constructed based on preset basic data according to preset safety constraint conditions to obtain a unit combination, unit output information and a power transmission section trend;
the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data are configured according to the standby limited value of the initial system under the preset safety constraint condition;
the optimization calculation module 302 is used for performing limited value distribution calculation according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by the power transmission network and an updated unit combination, and calculating a system standby network limited value according to the unit standby network limited value;
the screening calculation module 303 is configured to screen out a newly started unit in a newly started state according to the updated unit combination, and calculate a corresponding newly started standby limited value;
a system limitation calculating module 304, configured to calculate a system standby limited value according to the system standby network limited value and the newly-opened standby limited value;
the judgment iteration module 305 is used for replacing the system standby limited value with the initial system standby limited value if the preset cut-off condition is not met, and triggering the modeling solving module until the preset cut-off condition is met to obtain a target unit combination clear model;
the preset cut-off conditions are as follows: and the iteration times are larger than or equal to the maximum threshold, or the unit combination is updated to meet the preset positive and standby constraint conditions of the system under the condition that no new out-of-limit section exists.
Further, the optimization calculation module 302 includes:
the screening submodule 3021 is configured to perform a tidal current load screening operation according to a power transmission section tidal current and a tidal current threshold value to obtain a section set, and perform a sensitivity screening operation according to a unit combination and a sensitivity threshold value to obtain a unit set, where the unit set includes multiple units;
a sorting submodule 3022, configured to sort the fracture surface sets in an ascending order according to the total number of the corresponding machine sets;
the distribution submodule 3023 is configured to calculate an initial standby network limited value corresponding to each section in an ascending order, distribute the initial standby network limited value to a corresponding unit according to a preset unit standby capacity, and obtain the preset unit standby capacity according to the unit output information;
a judging submodule 3024, configured to judge whether an initial standby network limited value allocated to each unit is greater than a maximum positive standby limited value, if so, calculate an excess limited value, allocate the excess limited value to another unit, and delete the current unit from the unit set, so as to obtain an updated unit combination and a unit standby network limited value;
and the summing submodule 3025 is configured to sum up all the unit backup network limited values to obtain a system backup network limited value.
Further, the screening submodule 3021 is specifically configured to:
carrying out load rate calculation according to the power transmission section load flow to obtain the ground state load flow rate of the power transmission section;
acquiring a power transmission section under the condition that the ground state tidal current load rate is greater than or equal to a tidal current threshold value to form a section set;
carrying out sensitivity calculation according to the unit combination to obtain the relative sensitivity of the section to which each unit belongs;
and acquiring the unit under the condition that the relative sensitivity is greater than or equal to the sensitivity threshold value to form a unit set.
Further, the screening calculation module 303 is specifically configured to:
screening a newly-started unit in a newly-started state according to the updated unit combination;
and calculating a newly-opened standby limited value corresponding to the newly-opened unit according to the preset percentage of the maximum adjustable output of the unit.
The application also provides a standby modeling device for the operation of the electric power spot market, which is characterized by comprising a processor and a memory:
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is configured to execute the power spot market run backup modeling method in the above-described method embodiments according to instructions in the program code.
The present application further provides a computer-readable storage medium, wherein the computer-readable storage medium is configured to store program code for executing the power spot market operation backup modeling method in the above method embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for executing all or part of the steps of the method described in the embodiments of the present application through a computer device (which may be a personal computer, a server, or a network device). And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A power spot market operation standby modeling method is characterized by comprising the following steps:
solving a power spot market day-ahead safety constraint unit combination clearing model constructed based on preset basic data according to preset safety constraint conditions to obtain a unit combination, unit output information and a power transmission section flow;
the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data are acquired, and the preset safety constraint condition is configured according to the standby limited value of the initial system;
performing limited value distribution calculation according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by a power transmission network and an updated unit combination, and calculating a system standby network limited value according to the unit standby network limited value;
screening a newly-started unit in a newly-started state according to the updated unit combination, and calculating a corresponding newly-started standby limited value;
calculating a system standby limited value according to the system standby network limited value and the newly-opened standby limited value;
if the preset cut-off condition is not met, replacing the initial system standby limited value with the system standby limited value, returning to the step of solving a day-ahead safety constraint unit combination clearing model of the electric power spot market constructed on the basis of preset basic data according to the preset safety constraint condition until the preset cut-off condition is met, and obtaining a target unit combination clearing model;
the preset cut-off condition is as follows: and the iteration times are greater than or equal to the maximum threshold, or the updated unit combination meets the preset positive and standby constraint conditions of the system under the condition that no new out-of-limit section exists.
2. The electric power spot market operational reserve modeling method of claim 1, wherein said performing a limited value distribution calculation based on said unit combinations, said unit output information, and said transmission profile flow to obtain unit reserve network limited values and updated unit combinations limited by a transmission network, and calculating system reserve network limited values based on said unit reserve network limited values comprises:
carrying out tidal current load screening operation according to the power transmission section tidal current and a tidal current threshold value to obtain a section set, and carrying out sensitivity screening operation according to a unit combination and a sensitivity threshold value to obtain a unit set, wherein the unit set comprises a plurality of units;
arranging the section sets in an ascending order according to the corresponding total number of the units;
calculating an initial standby network limited value corresponding to each section according to an ascending order, distributing the initial standby network limited value to a corresponding unit according to a preset unit standby capacity, and obtaining the preset unit standby capacity according to the unit output information;
judging whether the initial standby network limited value distributed to each unit is larger than the maximum positive standby limited value or not, if so, calculating the exceeding limited value, distributing the exceeding limited value to other units, and deleting the current unit from the unit set to obtain an updated unit combination and the unit standby network limited value;
and summing all the unit standby network limited values to obtain a system standby network limited value.
3. The power spot market operational backup modeling method according to claim 2, wherein performing a tidal current load screening operation according to a transmission section tidal current and a tidal current threshold to obtain a section set, and performing a sensitivity screening operation according to a unit combination and a sensitivity threshold to obtain a unit set comprises:
carrying out load rate calculation according to the power transmission section load flow to obtain the ground state load flow rate of the power transmission section;
acquiring a power transmission section under the condition that the ground state power flow load rate is greater than or equal to a power flow threshold value to form a section set;
carrying out sensitivity calculation according to the unit combination to obtain the relative sensitivity of the section to which each unit belongs;
and acquiring the unit under the condition that the relative sensitivity is greater than or equal to the sensitivity threshold value to form a unit set.
4. The method for modeling power spot market operational reserve according to claim 1, wherein the screening out a new start unit in a new start state according to the updated set combination and calculating a corresponding new start reserve limited value comprises:
screening out a newly-started unit in a newly-started state according to the updated unit combination;
and calculating a newly-opened standby limited value corresponding to the newly-opened unit according to the preset percentage of the maximum adjustable output of the unit.
5. An electric power spot market operation standby modeling device, comprising:
the modeling solving module is used for solving a unit combination clearing model of the electric power spot market constructed based on the preset basic data according to preset safety constraint conditions to obtain a unit combination, unit output information and a power transmission section flow;
the preset basic data includes: the system data, the unit data, the load data, the section data and the preset sensitivity data are acquired, and the preset safety constraint condition is configured according to the standby limited value of the initial system;
the optimization calculation module is used for performing limited value distribution calculation according to the unit combination, the unit output information and the power transmission section flow to obtain a unit standby network limited value limited by a power transmission network and an updated unit combination, and calculating a system standby network limited value according to the unit standby network limited value;
the screening calculation module is used for screening a newly started unit in a newly started state according to the updated unit combination and calculating a corresponding newly started standby limited value;
the system limited calculation module is used for calculating a system standby limited value according to the system standby network limited value and the newly-opened standby limited value;
the judgment iteration module is used for replacing the initial system standby limited value with the system standby limited value if the preset cut-off condition is not met, and triggering the modeling solving module until the preset cut-off condition is met to obtain a target unit combination clear model;
the preset cut-off condition is as follows: and the iteration times are greater than or equal to the maximum threshold, or the updated unit combination meets the preset positive and standby constraint conditions of the system under the condition that no new out-of-limit section exists.
6. The power spot market operational backup modeling apparatus of claim 5, wherein the optimization calculation module comprises:
the screening submodule is used for carrying out tidal current load screening operation according to the power transmission section tidal current and a tidal current threshold value to obtain a section set, and carrying out sensitivity screening operation according to a unit combination and a sensitivity threshold value to obtain a unit set, wherein the unit set comprises a plurality of units;
the sequencing submodule is used for carrying out ascending sequencing on the section set according to the corresponding total number of the units;
the distribution submodule is used for calculating an initial standby network limited value corresponding to each section according to an ascending order, distributing the initial standby network limited value to a corresponding unit according to a preset unit standby capacity, and obtaining the preset unit standby capacity according to the unit output information;
the judgment submodule is used for judging whether the initial standby network limited value distributed to each unit is larger than the maximum positive standby limited value or not, if so, calculating the exceeding limited value, distributing the exceeding limited value to other units, and deleting the current unit from the unit set to obtain an updated unit combination and the unit standby network limited value;
and the summation submodule is used for summing all the unit standby network limited values to obtain a system standby network limited value.
7. The power spot market operational backup modeling apparatus of claim 5, wherein the screening submodule is specifically configured to:
carrying out load rate calculation according to the power transmission section load flow to obtain the ground state load flow rate of the power transmission section;
acquiring a power transmission section under the condition that the ground state power flow load rate is greater than or equal to a power flow threshold value to form a section set;
carrying out sensitivity calculation according to the unit combination to obtain the relative sensitivity of the section to which each unit belongs;
and acquiring the unit under the condition that the relative sensitivity is greater than or equal to the sensitivity threshold value to form a unit set.
8. The power spot market operational backup modeling apparatus of claim 5, wherein the screening calculation module is specifically configured to:
screening out a newly-started unit in a newly-started state according to the updated unit combination;
and calculating a newly-opened standby limited value corresponding to the newly-opened unit according to the preset percentage of the maximum adjustable output of the unit.
9. An electric power spot market operational backup modeling apparatus, the apparatus comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the power spot market operational backup modeling method of any of claims 1-4 according to instructions in the program code.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium is configured to store program code for performing the power spot market operational backup modeling method of any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313851.3A CN112288596B (en) | 2020-11-20 | 2020-11-20 | Electric power spot market operation standby modeling method and related device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313851.3A CN112288596B (en) | 2020-11-20 | 2020-11-20 | Electric power spot market operation standby modeling method and related device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112288596A true CN112288596A (en) | 2021-01-29 |
| CN112288596B CN112288596B (en) | 2021-09-03 |
Family
ID=74398899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313851.3A Active CN112288596B (en) | 2020-11-20 | 2020-11-20 | Electric power spot market operation standby modeling method and related device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112288596B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113452017A (en) * | 2021-06-24 | 2021-09-28 | 广东电网有限责任公司 | Method, system, equipment and storage medium for analyzing available spare capacity of unit |
| CN113792995A (en) * | 2021-08-26 | 2021-12-14 | 中国南方电网有限责任公司 | Method, device, equipment and storage medium for determining power resource dominance degree |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150221030A1 (en) * | 2014-02-06 | 2015-08-06 | Siemens Industry, Inc. | Systems, methods and apparatus for improved operation of electricity markets |
| CN109559040A (en) * | 2018-11-29 | 2019-04-02 | 广东电网有限责任公司 | A kind of ancillary service and energy market sequentially go out clearing method |
| CN110224398A (en) * | 2019-06-12 | 2019-09-10 | 广东电网有限责任公司 | Power spot market goes out clearing method, device, system and storage medium to one kind a few days ago |
-
2020
- 2020-11-20 CN CN202011313851.3A patent/CN112288596B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150221030A1 (en) * | 2014-02-06 | 2015-08-06 | Siemens Industry, Inc. | Systems, methods and apparatus for improved operation of electricity markets |
| CN109559040A (en) * | 2018-11-29 | 2019-04-02 | 广东电网有限责任公司 | A kind of ancillary service and energy market sequentially go out clearing method |
| CN110224398A (en) * | 2019-06-12 | 2019-09-10 | 广东电网有限责任公司 | Power spot market goes out clearing method, device, system and storage medium to one kind a few days ago |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113452017A (en) * | 2021-06-24 | 2021-09-28 | 广东电网有限责任公司 | Method, system, equipment and storage medium for analyzing available spare capacity of unit |
| CN113792995A (en) * | 2021-08-26 | 2021-12-14 | 中国南方电网有限责任公司 | Method, device, equipment and storage medium for determining power resource dominance degree |
| CN113792995B (en) * | 2021-08-26 | 2024-02-27 | 中国南方电网有限责任公司 | Method, device, equipment and storage medium for determining power resource dominance degree |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112288596B (en) | 2021-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112288596B (en) | Electric power spot market operation standby modeling method and related device | |
| CN112446540B (en) | Electric power spot market clearing and settlement optimizing method and device | |
| CN112183855B (en) | Regional power spot market clearing method and device and electronic equipment | |
| CN103701920A (en) | Method for configuring virtual application server under cloud environment | |
| CN106230986A (en) | The resource adaptation dispatching patcher of a kind of electrically-based PaaS cloud platform and method | |
| Gutiérrez-Alcaraz et al. | An efficient method for contingency-constrained transmission expansion planning | |
| CN111509700B (en) | Power grid operation management method and device based on electricity price prediction | |
| CN107450855A (en) | A kind of model for distributed storage variable data distribution method and system | |
| CN110707729B (en) | Method and device for analyzing multi-region primary frequency modulation condition and storage medium | |
| CN108808742B (en) | Risk scheduling method and system considering access of active power distribution network and oriented to transmission resistor plug | |
| CN112968962B (en) | Cloud platform storage resource scheduling method based on distributed computer cluster architecture | |
| CN113722100B (en) | Dynamic super-allocation method and equipment for cloud platform memory resources based on trend prediction | |
| CN113162077B (en) | Aggregation management method and device for distributed energy storage, electronic equipment and storage medium | |
| CN111932122B (en) | Distribution network disaster prevention material allocation method, device, terminal and storage medium | |
| CN115310718A (en) | SCUC optimization method based on redundancy safety constraint reduction | |
| CN109167350A (en) | A kind of construction method of industrial load response model | |
| CN114744686A (en) | Generator set identification method, device, equipment and storage medium | |
| CN115241878B (en) | Standby optimization method and system considering wind power standby reliability | |
| CN104994136B (en) | The data store optimization method and system of extensive community | |
| CN111352721A (en) | Service migration method and device | |
| CN115663786B (en) | Power distribution method, device, equipment and medium | |
| CN112086968B (en) | Regional power grid unit combination method and system suitable for provincial power market environment | |
| CN111211615B (en) | Medium-voltage intelligent load control method and system for large-scale data center | |
| CN109103944B (en) | Power distribution method, device, equipment and storage medium | |
| CN115270443A (en) | Effective reserve capacity determination method and device considering power grid blocking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |