172 results about "Electricity spot market" patented technology

The invention discloses a clearing method, system and apparatus for the power spot market. The method comprises firstly establishing a DC power flow constraint model; calculating the power output planparameter of a power generating set according to the DC power flow constraint model to obtain the preliminary result of the power spot market clearing optimization; obtaining the power flow values ofrespective branches by performing AC safety check calculation on the power output plan parameter; and correcting the DC power flow constraint model according to respective power flow values. The solution accuracy is improved based on the DC power flow constraint model. Performing AC safety check calculation on the power output plan parameter obtained by DC power flow constraint calculation is quicker than directly using AC power flow constraint calculation. Therefore, the method provided by the present invention takes account of solution accuracy and calculation speed, and more satisfies thepower spot market clearing optimization required by the actual engineering application than the prior art. The invention also discloses a clearing system and apparatus for the power spot market and acomputer readable storage medium, which have the above beneficial effects.

The invention discloses an operation simulation method, device and equipment suitable for an electric spot market. The method comprises the steps of opetating a case; setting a scene-oriented corresponding to the case; configuring market transaction parameters; selecting and importing basic data and operation data used for simulation into the electric spot market simulation system, and generatingsimulation boundary conditions; issuing electric power market operation information on the electric power spot market simulation system; obtaining transaction application information; performing simulation calculation of the electric power market according to the oriented scene corresponding to the case, the market transaction parameter, the simulation boundary condition and the transaction application information to obtain a simulation result; And the simulation result is evaluated and analyzed, and obtaining evaluation and analysis data of the electric spot market. The method is suitable forthe operation simulation analysis of the electric spot market, and is beneficial to reducing the decision and implementation risk of the electric spot market.

The invention relates to a foreground theory-based power generator auxiliary quotation system and method for an electric power spot market. The system comprises a login information input module, a power generation enterprise data collection module, a transaction center database, a market operation information collection module, a target time period load prediction module, a spot market price prediction module, an auxiliary quotation module and an output display module. The method comprises the steps that an auxiliary quotation module builds a power generation company spot market bidding strategy and a power generation enterprise electric power spot market comprehensive decision model based on a foreground theory according to a power generation enterprise income function; and obtaining theoptimal electric quantity distribution proportion of the power generator in the plurality of markets and the optimal quotation of the spot market, and determining the optimal decision scheme. The method is reasonable in design, can be applied to system process design in actual work such as power transaction, and provides effective support for power generation enterprises to participate in power transaction in the power spot market.

The invention discloses a power spot market clearing method and device based on a wind power plant and a computer readable storage medium. The method comprises the following steps: according to pre-obtained power data information and a pre-built safety constraint unit combination model, a thermal power unit startup combination and electric field overall output plan is obtained; and the thermal power unit startup combination and electric field overall output plan is analyzed according to a pre-built safety constraint economic dispatch model, so that corresponding day-ahead thermal power unit output plan and wind power plant output plan are obtained, wherein the safety constraint unit combination model comprises a first objective function which minimizes the electricity purchase cost and a safety constraint unit combination constraint condition, and the safety constraint economic dispatch model comprises a second objective function which minimizes the electricity purchase cost and a safety constraint economic dispatch constraint condition. According to the method, the wind power plant can participate in the spot market, and the output of the wind power plant is predicted under the condition that the social welfare is maximized.

The invention discloses a double-layer bidding optimization method for a pumped storage unit in a day-ahead electric power spot market. The method comprises the steps of firstly randomly generating Wgroups of new quoted prices in a quoted price range; then calling a gurobi optimizer to solve the market clearing model, and optimizing related parameters of the pumped storage unit under the target of minimum total power generation cost of the whole system; and with the goal of obtaining the maximum income of the pumped storage unit in the electric power spot market, optimizing the iterative process through a genetic algorithm until the optimal quotation and capacity optimization result of the pumped storage unit is output. According to the method, reasonable arrangement of the capacity of the pumped storage unit and optimization of resource allocation can be realized, and meanwhile, higher income is obtained, so that the competitiveness of the pumped storage power station in the market is improved.

The invention discloses an electric power spot market auxiliary transaction method based on a neural network. The method comprises the following steps of (1) training a neural network model by utilizing historical declaration and clearing data, and simulating a relation between declaration amount and price and clearing amount and price in a single time period; (2) calculating a declarable electricquantity of each cooperative power plant on the declaration day in each time period; (3) generating a plurality of overall declaration schemes containing all cooperative power plants for the single time period; (4) sequentially inputting different declaration schemes in the single period into a neural network model, predicating the clearing price and the clearing amount corresponding to each declaration scheme by utilizing the neural network model, calculating a predicted income of each declaration scheme, and calculating a risk coefficient; (5), in combination with the predicted incomes andthe risk coefficients, finally selecting out the optimal declaration scheme in each time period; and (6) sending information of a declared amount and declared price pair ought to be selected by each cooperative power plant in the optimal declaration scheme in each time period to each power plant, thereby guiding each power plant to complete an electric power spot market declaration process.

The invention discloses a safety constraint unit combination calculation method considering direct current link line power optimization. The method comprises the steps that 1) a linearization model considering a direct current stable operation constraint, a power upper and lower limit constraint, an adjustment rate constraint, an adjustment step constraint and a power transmission constraint is established; 2) direct current power is equivalent to a node to be injected into and participate in the combination optimization calculation of a safety constraint unit; and 3) according to a optimization objective function, optimization calculation is carried out on direct current link line power and unit combination, and voidance is carried out to acquire unit combination and time-sharing direct current link line power arrangement and time-sharing node electricity price results. According to the invention, the method uses the power spot market as the background; for the operating characteristics of a direct current system, direct current link line power is involved in the combination optimization calculation of the safety constraint unit through reasonable modeling; and the objective function can be further optimized.

The invention provides a regional spot market technology support system. The regional spot market technical support system comprises a basic platform, a public service application, a core application,an auxiliary scheduling application and a market evaluation disposal application. The regional spot market technical support system provided by the invention meets the market rules and development goals of the electric power spot market, meets the functional requirements of spot market operation, and ensures the practicability and applicability of the system.

The invention discloses a pumped storage unit operation strategy model building method based on an electric power spot market, and the method comprises the steps: obtaining a clearing rule of the spotmarket or a pricing rule of the spot market, and determining a clearing mathematic model of a virtual spot market; acquiring historical quotation data of spot market rules and supervision regulations, and analyzing the historical quotation data to obtain a historical quotation data analysis result; obtaining and analyzing historical clearing data of the spot market, and obtaining a typical constraint scene and a unit constraint condition; determining an optimized quotation window of the pumped storage unit in real time in a preset period, and predicting a load and a system state of the optimized quotation window in preset time; and combining the clearing mathematical model, the historical quotation data analysis result, the typical constraint scene and unit constraint condition, the loadand the system state in the preset time, and determining the operation constraint condition of the pumped storage unit to construct an optimized quotation model of the pumped storage unit.

The embodiment of the invention provides an electricity price prediction method and device for an electric power spot market, terminal equipment and a storage medium, and the method comprises the steps: obtaining historical electricity price data in a certain time range, and forming a historical electricity price data sequence; normalizing the historical electricity price data sequence, and carrying out wavelet decomposition on the normalized historical electricity price data sequence by adopting a set scale to decompose the normalized historical electricity price data sequence into sub-sequences with different frequencies; dividing the sub-sequences with different frequencies into a training set and a prediction set; training a CNN model by using the training set, and transmitting the prediction set to the trained CNN model for electricity price prediction to obtain prediction data; carrying out wavelet reconstruction and reverse normalization processing on the prediction data, and outputting an actual electricity price prediction sequence. The embodiment of the invention can improve the precision of electricity price prediction in the electric power spot market.

The invention discloses a data verification method, device and system suitable for an electric power spot market. The method comprises the steps of acquiring a verification rule base suitable for theelectric power spot market; forming a data verification task list based on the verification rule base; and constructing a data verification task thread pool based on the data verification task list, calling a data verification engine for calculation by each data verification task thread, and processing each data verification task in parallel to complete data verification of the electric power spotmarket. According to the method, the verification requirements of high coupling degree, high accuracy, high expandability and high timeliness of the business data of the power spot market can be met,the data quality problem of the power spot market is comprehensively and effectively disclosed, and the market clearing calculation convergence and the result rationality are improved.

The invention discloses a day-ahead market clearing model considering medium and long term transaction and wind power uncertainty, and belongs to the technical field of power market transaction. The method comprises the steps of firstly obtaining basic data required for day-ahead market clearing, then establishing a day-ahead market clearing model considering medium and long term transaction and wind power uncertainty based on the basic data, solving to obtain a day-ahead clearing result, and finally settling a power generation side main body according to the clearing result. According to themethod, medium and long term transaction, wind power uncertainty and a day-ahead clearing model are organically combined, a simulation model is provided for analyzing a medium and long term contract execution mode, a transaction mode of wind power participation in the market and auxiliary service transaction, and the transition of the power market in China from an electric quantity market mainly based on medium and long term transaction to a power spot market is facilitated.

The invention provides an electric power spot market dynamic monitoring method and device and a storage medium, which relate to the technical field of electric power dispatching and monitoring. Electric power basic data of an electric power transaction center and an electric power spot system are obtained; according to the electric power basic data of the electric power transaction center and theelectric power spot system and a preset algorithm, a market analysis result of the electric power transaction center and a market analysis result of the electric power spot system are obtained; and the market analysis result of the electric power transaction center and the market analysis result of the electric power spot system are sent to a display device. By comprehensively acquiring, calculating and analyzing the basic data of the electric power transaction center and the electric power spot market system, the market operation state is mastered and monitored from the macroscopic level, andthe accuracy and integrity of electric power spot market monitoring are improved.

The invention discloses a day-ahead power spot market clearing method, system and device and a storage medium. The method comprises the steps of determining a unit startup combination through a safetyconstraint unit combination model, and obtaining a frequency modulation plan according to the unit startup combination and a frequency modulation market rule; determining a standby plan according tothe standby capacity, the standby quotation and the security constraint standby clearing model; and determining a unit power generation plan according to the unit startup combination, the frequency modulation plan, the standby plan and the safety constraint economic dispatching model. According to the embodiment of the invention, the standby capacity market which is relatively independent from theelectric energy market and the frequency modulation market is constructed, the real-time condition of the standby capacity is fully considered, and standby resources can be efficiently scheduled, sothat a reasonable, reliable and high-executability power generation plan is obtained, the stable operation of a power system is ensured, the power generation efficiency of the power system is improved, and the method can be widely applied to the technical field of power markets.

The invention belongs to the field of spot markets in which large-scale hydropower participates, and relates to a day-ahead spot market clearing method for power system with water consumption rate iterative correction of a hydropower station. The water consumption rate is used for replacing a complex NHQ curve to optimize power generation amount calculation, space-time hydraulic power and electricpower complex relation of the cascade power station is coupled into an SCUC/SCED model, the water consumption rate is corrected through fine water and electricity calculation iteration, and convergence is conducted to the precision within 0.01; and a complete day-ahead spot clearing solution method covering pre-event information management, declaration, SCUC/SCED and hydropower fine calculation is constructed. The method effectively solves the problem that the cascade upstream and downstream power station generating capacity are not matched when large-scale hydropower participates in day-ahead market clearing, and avoids solving difficulty brought by hydropower complex constraints to a clearing optimization model. The method has great significance in promotion and construction of electricpower spot markets in areas with high water and electricity proportions, with cascade power stations being tight in space-time coupling and upstream and downstream power stations belonging to different benefit bodies.

The invention relates to an electric power spot market monitoring data management method, device and apparatus, and belongs to the technical field of electric power spot systems. The method comprises:obtaining access data of preset interfaces of the electric power spot system, wherein the access data of each preset interface comprise interface information, access content and data access time; judging whether the access data is abnormal or not based on a preset rule and the access data; and if yes, sending abnormal alarm information, wherein the abnormal alarm information comprises at least one of abnormal interface information, abnormal alarm time and abnormal information description. Through monitoring the access data of each preset interface, an alarm is given when the data is abnormal,so that the monitoring of the access data is realized.

A method for simulating transactions in a decentralized spot power market is disclosed. At first, a typical load daily trade space model is established accord to that actual power consumption and thedirect trade of large users on typical day, and then a decentralized spot market trading simulation model is established, the evaluation index system is established and different trading schemes are designed. Then the evaluation indexes of each trading scheme are calculated according to the trading simulation results. Finally, the trading scheme analysis and sensitivity analysis are carried out according to the evaluation indexes of each trading scheme to verify the rationality of each trading scheme and analyze the possible risks in the spot market of electric power. This design not only canscientifically and reasonably realize the effective simulation of spot market, but also can accurately reflect the trading reality of the spot market in the initial stage.

The invention relates to a frequency modulation and electric energy combined clearing method, device and apparatus in the power market, and belongs to the technical field of power system dispatching operation. The method comprises the following steps: acquiring boundary data required by electric power spot market transaction and standby auxiliary service arrangement; obtaining declaration data ofmarket members; according to the boundary data and the declaration data, enabling the electric energy and frequency modulation auxiliary service combined clearing model based on the reserve capacity constraint to perform combined clearing on the electric energy and frequency modulation auxiliary service; and optimizing the standby auxiliary service based on the optimized standby auxiliary servicemodel according to a combined clearing result of the electric energy and the frequency modulation auxiliary service. An electric energy and frequency modulation auxiliary service combined clearing model considering standby capacity constraints is utilized. Standby capacity constraints are considered in combined clearing of electric energy and frequency modulation auxiliary services. The problem that in the prior art, a summarized power generation resource decision-making mechanism is not coordinated is solved, electric energy, frequency modulation and standby operation plans of a generator setmeet the requirement for safe operation of a power grid, and the safety of power grid dispatching operation is guaranteed.

The invention discloses a power generation marginal fuel cost calculation method for a generator set. The method comprises the steps that: acquiring the output level of the generator set and the average fuel consumption value corresponding to the output level; Calculating according to the average fuel consumption value and the corresponding output level to obtain a total fuel consumption value corresponding to the output level; Fitting the total fuel consumption value and the output level into a total fuel consumption curve of a quadratic function relation by using a least square method; Selecting any two points of the total fuel consumption curve as a first reference point and a second reference point respectively, and calculating to obtain a marginal fuel consumption value; And calculating to obtain the marginal fuel cost according to the recorded real-time fuel price and the marginal fuel consumption value. And by establishing a more accurate mathematical model, the measurement andcalculation accuracy is improved, so that the requirements of the electric spot market are met.

The invention discloses a day-ahead electric power spot market clearing safety checking method. The method comprises the steps of constructing and solving a SCUC model and an SCED model of day-ahead electric power spot market clearing based on an initial water level cross section area value, and obtaining power generation plan parameters and water abandoning flow of a hydroelectric generating setwhich is pre-cleared in the day-ahead market in each time period; sending the power generation plan parameters and the water abandoning flow to a hydropower station allocation system, and calculatingan accurate water level value of the hydropower station in each time period; comparing the accurate water level value with a preset water level control constraint limit value; and if the comparison result meets the water level control requirement, outputting the control quantity of the hydropower station power generation plan based on the accurate water level value. According to the invention, reference data for feasibility judgment of the clearing result of the electric power spot market and selection of correction measures can be provided for a dispatching institution, so that the reliability of the clearing result of the electric power spot market and the timeliness of clearing calculation are ensured.

The invention discloses a power system operation evaluation method and system under source-network-load-storage multi-element collaborative interaction, and the system comprises a data import module, a three-level index evaluation module, a first-level index evaluation module and a result display module, the data import module is used for inputting power spot market operation original data and scores, and carrying out the primary processing of the data; the third-level index evaluation module is used for calculating subjective weight vectors of various indexes by adopting an analytic hierarchy process based on the preliminarily processed data, calculating objective weight vectors of the various indexes by adopting an entropy evaluation method, and optimizing and solving in a weight interval obtained by the subjective weight vectors and the objective weight vectors by taking level difference maximization as a target to obtain final index weights; the first-level index evaluation module endows the data with a weight value in the previous module based on the preliminarily processed data and adds up products to obtain an evaluation result of each first-level index; and the result display module displays evaluation results of the third-level indexes and the first-level indexes. According to the method, the operation of the electric power spot market is specifically and comprehensively evaluated, an evaluation system is established through the steps of index normalization processing, index weighting and index synthesis, and factors such as the structure, supply and demand, economical efficiency, adequacy, reliability, power generation structure and pollutant emission during the operation of the current electric power spot market are fully investigated.

The invention relates to an electric spot market clearing method considering user demand response. The method comprises the following steps of S1, presetting a boundary condition of a day-ahead markettransaction; s2, collecting an output/consumption plan and an unbalanced service quotation of the power balance unit; s3, clearing the electric power spot market according to the network security constraint, and if the output plan is greater than the consumption plan, enabling the electric power transaction center to clear out the electricity selling balance unit; if the output plan is smaller than the consumption plan, enabling the power transaction center preferentially to clear out the electricity selling balance unit and clear out the electricity utilization balance unit to determine a next-day power grid operation scheme; obtaining a day-ahead market clearing result; and S4, enabling the scheduling department to arranges unit output according to the day-ahead market clearing result,and carry out real-time market transaction and real-time market clearing at the same time. By introducing a power balance unit transaction mode and combining a method considering user demand response,synchronous transaction and smooth clearing of the power generation side and the user side in the spot market are realized.

The invention provides a method for participating in electricity market clearing and safety checking by an unmodeled small unit. In an electric power spot market technical support system, when the physical model does not model the low-voltage-level small unit participating in the market, the active power transmitted to the main network by the small unit through the equivalent load is predicted byutilizing the equivalent load prediction active power through defining the hooking relationship and the power distribution coefficient of the small unit and the electrical bus or the equivalent load,and the real active power of the equivalent load is obtained to calculate the power flow. And the sensitivity values of the small unit and the main network branch are calculated by using the power distribution coefficient, the equivalent load and the sensitivity value of the main network branch, so that the influence of the output of the small unit can be considered in the DC power flow constraintin the optimization model construction. According to the method, the influence of unmodeled small unit power generation on the power grid tide and clearing result can be accurately considered in an optimized clearing and safety checking algorithm, and an accurate safety checking result and a market price signal are obtained. The method has important significance for improving the accuracy of clearing results of the power market and improving the safety level of the power grid.

The invention provides a electric power package selection method and system for a power retail market, and the method comprises the steps: defining a power package and a calculation rule thereof according to the power consumption statistical data of a user; inputting user information, and analyzing power utilization characteristic information according to the user information; analyzing user riskpreferences according to the user information, and determining a risk package according to the risk preferences; and according to the power package, the power utilization characteristic information and the risk package, achieving power package selection. According to the invention, a retail package mode adapting to different power utilization characteristics can be researched by using the optimalpackage decision-making method of the power retail market, a technical basis is laid for formal operation of the power spot market, proper package structure forms among market main bodies are promotedto be consistent, and healthy development of the market is guided; according to the method, the electricity purchasing cost and the electric charge expenditure change of different types of users in different package modes can be analyzed, and a basis is provided for providing proper protection services for consumers.

The invention relates to a network-province two-stage electric power spot market technical support system based on a cloud platform and a construction method thereof. A network-level electric power spot market technical support system and a provincial-level electric power spot market technical support system are uniformly constructed on the cloud platform; the network and provincial power spot market technical support system is provided with a unified operation data center, and internal data interaction and external data interaction are realized through the operation data center. The network and provincial electric power spot market technical support systems realize transverse data interaction with the network and provincial electric power dispatching center automation systems in the second safety area and the third safety area respectively. Longitudinal data interaction is realized between the network and provincial power spot market technical support systems in a second safety area and a third safety area. Data interaction between functional modules in the network and provincial power spot market technical support system is realized through a cloud platform. Operators of the network and provincial power dispatching center achieve access to the network and provincial power spot market technical support system through the cloud terminal.

The application discloses a case data management system for spot market of electric power, which comprises a case creation module, a target case generation module, a case derivation module, a case import module, a case saving module and a case loading module, wherein the case creation module generates a target case, the case derivation module, the case import module, the case storing module and the case loading module. The present application utilizes each module to store the target basic data in the global database in the form of the target case to the case real-time database of the user terminal, and the target case can be exported to a storage directory specified by the user terminal, so as to optimize the calculation and safety check of the target case, a target calculation can be generated, and then the target calculation result is imported into the corresponding target case, It can also upload the target complete cases to the case file library in the form of files, which is moreconducive to the management of users, supports the migration of scene data files across systems and off-line analysis and calculation, ensures the flexible and efficient operation of the spot market data management system, and improves the efficiency of data management.