CN108173261B - New energy grid-connected active high-reliability automatic control system - Google Patents

New energy grid-connected active high-reliability automatic control system Download PDF

Info

Publication number
CN108173261B
CN108173261B CN201711417518.5A CN201711417518A CN108173261B CN 108173261 B CN108173261 B CN 108173261B CN 201711417518 A CN201711417518 A CN 201711417518A CN 108173261 B CN108173261 B CN 108173261B
Authority
CN
China
Prior art keywords
station
control
new energy
active
real
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.)
Active
Application number
CN201711417518.5A
Other languages
Chinese (zh)
Other versions
CN108173261A (en
Inventor
徐泰山
王胜明
行舟
汪宁渤
徐健
付铮
王昊昊
郑亮
马彦宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Gansu Electric Power Co Ltd
NARI Group Corp
Nari Technology Co Ltd
Wind Power Technology Center of Gansu Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Gansu Electric Power Co Ltd
NARI Group Corp
Nari Technology Co Ltd
Wind Power Technology Center of Gansu Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Gansu Electric Power Co Ltd, NARI Group Corp, Nari Technology Co Ltd, Wind Power Technology Center of Gansu Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201711417518.5A priority Critical patent/CN108173261B/en
Publication of CN108173261A publication Critical patent/CN108173261A/en
Application granted granted Critical
Publication of CN108173261B publication Critical patent/CN108173261B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J13/0006—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/48—Controlling the sharing of the in-phase component
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations

Abstract

The invention discloses a new energy grid-connected active high-reliability automatic control system, and belongs to the technical field of new energy grid-connected control. The method comprises the steps of setting a central station at a power grid dispatching end, setting a control substation at a stable section relevant to new energy grid connection accessed to a transformer substation, setting an execution station at a new energy station, and integrating real-time information and a control function of a power grid regulation and control system, a control function of a station monitoring system and an offline control strategy. The invention comprehensively considers precision and real-time performance, carries out reliability design aiming at communication abnormity of a control system, site abnormity and control strategy generation and implementation, ensures that the field station can be optimally controlled when a central station, a control substation and an execution station control device are respectively abnormal, can carry out emergency control on the field station when the field station monitoring system does not timely reduce the field station active power to an instruction value or the field station monitoring system is abnormal, and can also control the field station to slowly descend and run according to the current active power when the central station, the control substation and the execution station control device are all abnormal.

Description

New energy grid-connected active high-reliability automatic control system
Technical Field
The invention belongs to the technical field of new energy grid-connected control, and more specifically relates to a new energy grid-connected active high-reliability automatic control system.
Background
The new energy power generation has the characteristics of intermittence and randomness, and in order to furthest absorb the new energy power, the online optimization calculation and control of the grid-connected power of the conventional unit and the new energy station are carried out according to the ultra-short-term prediction of the new energy power generation and by considering the operation constraints of peak regulation, safety and stability, spot transaction, economy, environmental protection and the like of a power grid. Due to the fact that technical equipment and management levels of the new energy station are different greatly, compared with a conventional power station, the output controllability of the new energy station is usually poor, and the stability of the controllability is insufficient, therefore, if the control method of the conventional power station is used for controlling the new energy station, the precision, the real-time performance and the reliability of the new energy station responding to a control instruction of a power grid regulation and control center are difficult to guarantee comprehensively.
The thesis "design of large-scale cluster wind power active intelligent control system" (automation of power system, vol.34, No.17, 2010) proposes that a central station is arranged at a power grid regulation and control center, a control master station and a control substation are arranged at a transformer substation, an execution station is arranged at a wind power plant, a wind power plant active control strategy is established on line by the central station, the wind power plant active control strategy is issued to the execution station through the control master station and the control substation, the execution station sends the wind power plant active control strategy to a wind power plant monitoring system for execution, and the execution effect of the wind power plant active control strategy and the overtime wind power switching feeder are monitored. Compared with the technical scheme (simply referred to as a system control scheme) that a power grid control center directly issues the wind power plant active control strategy formulated on line to a wind power plant monitoring system for execution, the design scheme (simply referred to as a device control scheme) has the main advantages that: firstly, a special channel is adopted among stations, so that the real-time performance and the reliability are high; and if the wind power grid monitoring system does not actively drop the wind power grid in place, the execution station control device can implement emergency control on the wind power grid, so that the active drop of the wind power grid is ensured to be in place, and the safety risk of the power grid is effectively avoided.
However, these two control schemes have the same disadvantage that when the central station or the grid control center cannot generate the active control strategy of the wind farm, the active control capability of the wind farm is lost. In addition, the device control scheme also loses the active control capability on part of the wind farm when any one of the control main station, the control sub-station and the execution station is abnormal. Of course, compared with the device control scheme, the system control scheme has less investment and less debugging and operation maintenance workload.
Disclosure of Invention
The invention aims to: aiming at the defects in the prior art, the new energy grid-connected active high-reliability automatic control system is provided. The invention integrates the advantages of the system control scheme and the device control scheme in the prior art, but aims at the defects of the system control scheme and the device control scheme, introduces the local control strategy of the control substation and the execution station under the condition that the corresponding central station or the power grid regulation and control center can not generate the active control strategy of the wind power plant, comprehensively considers the factors of control precision, real-time property, reliability, investment, debugging, operation maintenance workload and the like, carries out reliability design aiming at communication abnormity, station abnormity, control strategy generation and implementation of the control system, and constructs the new energy grid-connected active high-reliability automatic control system.
The basic principle of the invention is that: in the real-time control strategy generation link, the adaptive selection design of the off-line control strategy and the on-line control strategy is introduced, so that the power grid safety risk possibly caused by untimely generation or inadaptation of the on-line control strategy can be avoided, and the adaptability of the real-time control strategy is improved. And a communication mode of interaction with two sites is adopted in the information uploading and control strategy issuing links, so that the new energy station can still be effectively controlled under the condition of single site abnormality.
Specifically, the invention is realized by adopting the following technical scheme that the control system comprises a dispatching terminal central station and a station terminal control station, wherein:
the substation end control station is divided into a substation end control station of the non-new energy station and a control station in the new energy station, the substation end control station of the non-new energy station is called a control substation for short, and the control station in the new energy station is called an execution station for short;
the control substation comprises a control device of the control substation and an in-station monitoring system, wherein the in-station monitoring system runs a real-time information acquisition and collection module, a real-time information uploading module, a new energy field active online control strategy receiving module, a new energy field active real-time control strategy generating module and a new energy field active real-time control strategy issuing module of the control substation;
the execution station comprises a control device of the execution station and a station monitoring system, wherein the station monitoring system runs a real-time information acquisition module, a real-time information uploading module, a new energy station active real-time control strategy receiving module and a new energy station active real-time control strategy execution module of the execution station;
the dispatching terminal central station operates a station terminal control station real-time information collecting module of the dispatching terminal central station, a new energy station active online control strategy calculating module, a new energy station active online control strategy issuing module and a new energy station active online control strategy calculating and controlling module;
the plant station end control station real-time information collecting module of the dispatching end central station is responsible for receiving the real-time information of the plant station end control station collected by the dispatching end central station according to the set periodThe control device real-time running information and the actual measurement information sent by the control substation and the execution station generate an identifier for judging the adaptability of the active online control strategy of the new energy field station according to the collected real-time information, the identifier is called as a central station mode character, and the set period of the real-time information collected by the central station of the dispatching end and the control station of the plant end is recorded as T1；
The active online control strategy calculation module of the new energy field station of the dispatching end central station is responsible for acquiring the latest power grid state estimation data from the power grid regulation and control system, if the time length between the power grid running time corresponding to the latest power grid state estimation data and the current time is longer than the set effective time length of the power grid state estimation data, acquiring the latest power grid state estimation data again until the time length between the power grid running time corresponding to the latest power grid state estimation data and the current time is less than or equal to the set effective time length of the power grid state estimation data, then taking the central station mode word as the mark of the online strategy, calling the mark of the online strategy as the online strategy mode word, generating a set of controllable new energy field stations and controllable quantity thereof according to the structure of the control system and the real-time information of the execution station, and recording the set as C, and collecting the control substation based on the real-time information collection module of the plant end control station, Generating load flow calculation data reflecting the real-time operation state of the power grid by executing actual measurement information sent by the station and the latest power grid state estimation data, and finally calculating power grid operation constraint and spot transaction constraint based on the real-time load flow calculation data of the power grid and the active power output prediction data of the new energy field station in the step C, and obtaining an active online control strategy of the new energy field station and a corresponding active control strategy of a conventional power station by optimizing and calculating the aim of maximizing the sum of the active power output of the new energy field station in the step C;
the active online control strategy issuing module of the new energy field station of the dispatching end central station is responsible for decomposing and issuing the active online control strategy and the online strategy mode word of the new energy field station to a corresponding control substation according to a control system structure when the active online control strategy calculation module of the new energy field station generates the active online control strategy of the new energy field station, if the control substation stops or is abnormal, the active online control strategy of the new energy field station which is responsible for being implemented by the control substation is directly issued to a corresponding execution station according to the execution station decomposition according to the control system structure until the stopped or abnormal control substation returns to normal operation;
the active online control strategy calculation control module of the new energy field station of the dispatching terminal central station is responsible for carrying out the following processing when the real-time information collection module of the station terminal control station generates a central station mode character: if the central station mode word is inconsistent with the online strategy mode word or the time length between the current time and the starting time of the active online control strategy calculation module of the previous new energy field station is greater than the set active online control strategy calculation period of the new energy field station, starting the operation of the active online control strategy calculation module of the new energy field station, and recording the set active online control strategy calculation period of the new energy field station as T2，T2Greater than T1；
The real-time information acquisition and collection module of the control substation is responsible for acquiring real-time running information and actual measurement information of a control device of the control substation, collecting the collected real-time information of the related control substation and the real-time information collected by the related execution station according to the structure of the control system and the set information interaction period between the control stations at the plant terminal, generating a mode identifier of the control substation according to the collected and collected real-time information, calling the identifier as a 'control substation mode character', and recording the set information interaction period between the control stations at the plant terminal as T3，T3Less than T1；
The real-time information uploading module of the control substation is responsible for transmitting the real-time information according to the T according to the structure of the control system1Periodically sending the real-time running information and the actual measurement information of the control device collected and collected by the dispatching terminal central station to the dispatching terminal central station, and according to the control system structure and T3The real-time running information and the actual measurement information of the control device collected and converged by the control substation are periodically sent to the corresponding control substations;
the active online control strategy receiving module of the new energy field station of the control substation is responsible for receiving an active online control strategy and an online strategy mode word of the new energy field station issued by the central station of the dispatching end after the control substation is decomposed according to the control system structure;
the active real-time control strategy generation module of the new energy field station of the control substation is responsible for taking the received active on-line control strategy of the new energy field station as the active real-time control strategy of the new energy field station if the active on-line control strategy receiving module of the new energy field station of the control substation receives the active on-line control strategy and the on-line strategy mode word of the new energy field station issued by the central station of the dispatching terminal, and taking the received active on-line control strategy of the new energy field station as the active real-time control strategy of the new energy field station if the on-line strategy mode word is inconsistent with the control substation mode word or is in k1T2If the active online control strategy and the online strategy mode word of the new energy station issued by the central station of the dispatching terminal are not received within the time, searching the current value control strategy from the offline strategy table according to the real-time information collected and collected by the station, and taking the current value control strategy as the active real-time control strategy of the new energy station, wherein k is1Is a setting parameter greater than 1;
the active real-time control strategy issuing module of the new energy station of the control substation is responsible for decomposing and issuing the active real-time control strategy of the new energy station to a corresponding execution station according to the structure of the control system when the active real-time control strategy generating module of the new energy station of the control substation generates the active real-time control strategy of the new energy station,
the real-time information acquisition module of the execution station is responsible for acquiring real-time operation information and actual measurement information of the control device of the execution station;
the real-time information uploading module of the execution station is responsible for transmitting the real-time information according to the T according to the structure of the control system3The real-time running information and the actual measurement information of the control device collected by the station are periodically sent to the corresponding control substation according to T1Directly sending the real-time running information and the actual measurement information of the control device acquired by the dispatching terminal to a central station of the dispatching terminal periodically;
the active real-time control strategy receiving module of the new energy field station of the executive station is responsible for receiving the active real-time control strategy of the new energy field station issued by the control substationA time control strategy if at k2T2If the active real-time control strategy of the new energy field station issued by the control substation is not received within the time, the received active on-line control strategy of the new energy field station issued by the central station of the dispatching end is used as the active real-time control strategy of the new energy field station until the active real-time control strategy of the new energy field station issued by the control substation can be received, and if the active real-time control strategy of the new energy field station issued by the control substation is not received at k2T2Within the time, the active real-time control strategy information of the new energy field station issued by the control substation is not received, and the active on-line control strategy information of the new energy field station issued by the central station of the dispatching end is not received, then the maximum value of the real-time active of the new energy field station collected by the station after the real-time active of the new energy field station is reduced according to the set proportion and the minimum reserved capacity set by the new energy field station is used as the active control instruction value corresponding to the active real-time control strategy of the new energy field station until the active real-time control strategy of the new energy field station issued by the control substation or the central station of the dispatching end can be received, wherein k2Greater than k1；
The active real-time control strategy execution module of the new energy station of the execution station is responsible for sending an active control instruction value corresponding to the active real-time control strategy of the new energy station to a new energy station monitoring system when the active real-time control strategy receiving module of the new energy station of the execution station generates the active real-time control strategy of the new energy station, the monitoring system controls the new energy station, simultaneously monitors the active control instruction execution effect according to the actual measurement information acquired by the execution station control device, if the active real-time control strategy of the new energy station is to reduce the active output of the new energy station and the active output of the new energy station is still larger than the active control instruction value after the set time is over, the difference value of the real-time active and active control instruction values of the new energy station is used as the active control quantity of the execution station for carrying out emergency control on the new energy station according to the real-time operation information and the actual measurement information of the control device acquired by the execution station, the executive station control device implements emergency control on the new energy station;
if the new energy station monitoring system is in k3T2Active real-time control of execution station control device not received within timeThe strategy is executed according to an active online control strategy issued by a central station of a dispatching end, wherein k3Greater than k2If the new energy station monitoring system is at k3T2And if the active real-time control strategy of the executive station control device is not received within the time, and the active on-line control strategy issued by the central station of the dispatching terminal is not received, taking the maximum value of the real-time active of the new energy station collected by the monitoring system of the station and the minimum reserved capacity set by the new energy station as the active control instruction value corresponding to the active real-time control strategy of the new energy station, and controlling the new energy station until the active on-line control strategy of the new energy station issued by the executive station control device or the central station of the dispatching terminal can be received.
The technical solution is further characterized in that the control device of the control substation is installed in a substation to which a safe and stable power transmission section related to new energy grid-connected active control is connected.
The technical scheme is further characterized in that when the new energy field active online control strategy calculation module of the dispatching end central station generates a new energy field active online control strategy and a corresponding conventional power station active control strategy, the conventional power station is controlled by the power grid regulation and control system according to the conventional power station active control strategy.
By adopting the technical scheme, the invention achieves the following technical effects: the invention aims at the reliability design of multiple backup measures in the communication abnormity, site abnormity, control strategy generation and implementation of multiple links of the control system, realizes the optimized control of the field station when the central station, the control substation and the execution station control device are respectively abnormal, can implement the emergency control of the field station when the field station monitoring system can not timely reduce the field station active power to the instruction value or the field station monitoring system is abnormal, and can control the field station to slowly descend and run according to the current active power when the central station, the control substation and the execution station control device are all abnormal.
Drawings
Fig. 1 is a control station layout diagram of the present invention.
Fig. 2 is a diagram showing a control system of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
This embodiment is an embodiment of the present invention.
In fig. 1, two control substations are respectively arranged in substations to which a safety and stability power transmission section 1 and a safety and stability power transmission section 2 related to new energy grid-connected active control are connected, and execution stations are respectively arranged in each wind farm and photovoltaic power station which need to be subjected to centralized control.
The new energy grid-connected active high-reliability automatic control system in fig. 2 is composed of a dispatching end central station and a plant station end control station, wherein the plant station end control station is divided into a transformer station end control station of a non-new energy field station and a new energy field station internal control station, the transformer station end control station of the non-new energy field station is called a control substation for short, the new energy field station internal control station is called an execution station for short, the dispatching end central station is composed of a new energy control decision application and a power grid regulation and control system, and comprises a plant station end control station real-time information gathering module, a new energy field station active online control strategy calculation module, a new energy field station active online control strategy issuing module and a new energy field station active online control strategy calculation control module, the control substation is composed of a control device and a transformer station internal monitoring system and comprises a real-time information collecting and gathering module, a real-time information uploading module, The active on-line control strategy receiving module of the new energy station, the active real-time control strategy generating module of the new energy station and the active real-time control strategy issuing module of the new energy station are provided, and the executive station is composed of a control device and a station monitoring system and comprises a real-time information acquisition module, a real-time information uploading module, an active real-time control strategy receiving module of the new energy station and an active real-time control strategy executing module of the new energy station.
The station end control station real-time information collecting module is responsible for receiving the control substation and the execution station control device according to the set period of the dispatching end central station collecting the station end control station real-time information, and the control device is sent by the in-station monitoring system and the power grid monitoring systemThe real-time operation information and the actual measurement information are generated according to the collected real-time information, a central station mode character for judging the adaptability of the active on-line control strategy of the new energy station is generated (the central station mode character is a mark), and the set period of the real-time information collected by the central station of the dispatching end and the station end control station is recorded as T1Typically set at 5 seconds;
the real-time running information of the control device comprises device abnormity, communication state, pressing plate state, fixed value and the like; the actually measured information of the control device comprises equipment switching on/off states, equipment power flow and the like;
the active online control strategy calculation module of the new energy station is responsible for acquiring the latest power grid state estimation data from a power grid regulation and control system, if the time length between the power grid operation time corresponding to the latest power grid state estimation data and the current time is longer than the set effective time length of the power grid state estimation data (usually set to be 2.5 minutes), acquiring the latest power grid state estimation data again until the time length between the power grid operation time corresponding to the latest power grid state estimation data and the current time is less than or equal to the set effective time length of the power grid state estimation data, then, taking a central station mode word as an online strategy mode word (namely an identification of an online strategy mode), generating a set of a controllable new energy station and controllable quantity thereof according to the structure of the control system and the real-time information of an execution station, marking the set as C, and then based on a control substation, a controllable quantity, which is collected by the real-time information collection module, Generating load flow calculation data reflecting the real-time operation state of the power grid by executing actual measurement information sent by the station and latest power grid state estimation data, and finally calculating operation constraints such as power grid stable section limit, active standby, external tie line active plan and spot transaction constraints and the like based on the real-time load flow calculation data of the power grid and the active output prediction data of the new energy station in the step C, and obtaining an active online control strategy of the new energy station and a corresponding active control strategy of a conventional power station by optimizing calculation by taking the sum of the active outputs of the new energy station in the step C as a target;
when the new energy field station active online control strategy calculation module generates a new energy field station active online control strategy and a corresponding conventional power station active control strategy, the conventional power station is controlled through a power grid regulation and control system according to the active control strategy of the conventional power station;
the active online control strategy issuing module of the new energy station is responsible for issuing an active online control strategy of the new energy station and an online strategy mode word to a corresponding control substation control device through a power grid monitoring system and an intra-station monitoring system according to the control system structure when the active online control strategy calculation module of the new energy station generates the active online control strategy of the new energy station, if the control substation is stopped or abnormal, the active online control strategy of the new energy station which is responsible for being implemented by the control substation is directly issued to the new energy station monitoring system of a corresponding execution station according to the execution station decomposition and the power grid monitoring system according to the control system structure, and is sent to the control device of the execution station by the station monitoring system until the stopped or abnormal control substation recovers normal operation;
the active online control strategy calculation control module of the new energy station is responsible for performing the following processing when the real-time information collection module of the station-side control station generates a central station mode character: if the central station mode word is inconsistent with the online strategy mode word or the time length between the current time and the starting time of the active online control strategy calculation module of the previous new energy field station is greater than the set active online control strategy calculation period of the new energy field station, starting the operation of the active online control strategy calculation module of the new energy field station, and recording the set active online control strategy calculation period of the new energy field station as T2，T2Greater than T1Typically set at 5 minutes;
the real-time information acquisition and collection module of the control substation is responsible for acquiring real-time running information and actual measurement information of a control device of the control substation, collecting real-time information collected and collected by the related control substation and real-time information collected by the related execution station according to the structure of the control system and the set information interaction period between the control stations at the plant station side, and generating a 'control substation mode character' (namely a method for controlling the substation) according to the collected and collected real-time informationFormula mark), recording the set information interaction period between the station-side control stations as T3，T3Less than T1Typically set to 0.1 seconds;
the real-time information uploading module of the control substation is responsible for transmitting the real-time information according to the T according to the structure of the control system1Periodically sending real-time running information and actual measurement information of a control device collected and collected by the station to a new energy control decision application of a dispatching terminal central station through a substation monitoring system and a power grid monitoring system where the station is located, and sending the real-time running information and the actual measurement information to the dispatching terminal central station according to the T according to the structure of the control system3Sending real-time running information and actual measurement information of the control device collected and converged by the control substation to the corresponding control device of the control substation for a period;
the active online control strategy receiving module of the new energy field station of the control substation is responsible for receiving a new energy control strategy and an 'online strategy mode word' of the central station of a dispatching terminal through a power grid monitoring system and a substation monitoring system where the new energy field station is located, wherein the new energy control strategy and the 'online strategy mode word' are issued according to the control system structure after the control substation is decomposed;
the active real-time control strategy generation module of the new energy field station of the control substation is responsible for taking the received active on-line control strategy of the new energy field station as the active real-time control strategy of the new energy field station if the active on-line control strategy receiving module of the new energy field station receives the active on-line control strategy and the on-line strategy mode word of the new energy field station issued by the central station of the dispatching terminal, and taking the active on-line control strategy of the new energy field station as the active real-time control strategy of the new energy field station if the on-line strategy mode word is inconsistent with the control substation mode word or is in k1T2If the active online control strategy and the online strategy mode word of the new energy station issued by the central station of the dispatching terminal are not received within the time, searching the current value control strategy from the offline strategy table according to the real-time information collected and collected by the station, and taking the current value control strategy as the active real-time control strategy of the new energy station, wherein k is1A setting parameter greater than 1, typically set to 1.5;
the active real-time control strategy issuing module of the new energy station of the control substation is responsible for issuing the active real-time control strategy of the new energy station to a corresponding execution station control device according to the control system structure when the active real-time control strategy generating module of the new energy station generates the active real-time control strategy of the new energy station;
the real-time information acquisition module of the execution station is responsible for acquiring real-time operation information and actual measurement information of the control device of the execution station;
the real-time information uploading module of the execution station is responsible for transmitting the real-time information according to the T according to the structure of the control system3The real-time running information and the actual measurement information of the control device collected by the station are periodically sent to the corresponding control substation according to T1Directly sending real-time running information and actual measurement information of a control device acquired by the station to a new energy control decision application of a dispatching terminal central station through a station monitoring system and a power grid monitoring system in the period;
the active real-time control strategy receiving module of the new energy field of the executive station is responsible for receiving the active real-time control strategy of the new energy field issued by the control device of the control substation, if the active real-time control strategy is at k2T2If the active real-time control strategy of the new energy field station issued by the control device of the control substation is not received within the time, the received active on-line control strategy of the new energy field station issued by the central station of the dispatching end is used as the active real-time control strategy of the new energy field station until the active real-time control strategy of the new energy field station issued by the control device of the control substation can be received, and if the active real-time control strategy of the new energy field station issued by the control device of the control substation2T2Within the time, the active real-time control strategy information of the new energy field station issued by the control substation control device is not received, and the active on-line control strategy information of the new energy field station issued by the dispatching end central station is not received, then the maximum value of the new energy field station real-time active power collected by the station after the real-time active power is reduced according to a set proportion (usually set to 5%) and the minimum reserved capacity set by the new energy field station is used as the active control instruction value corresponding to the active real-time control strategy of the new energy field station until the active real-time control strategy of the new energy field station issued by the control substation control device or the dispatching end central station can be received, wherein k is2Greater than k1Typically set to 1.8;
the active real-time control strategy execution module of the new energy station of the execution station is responsible for sending an active control instruction value corresponding to the active real-time control strategy of the new energy station to a new energy station monitoring system when the active real-time control strategy receiving module of the new energy station generates the active real-time control strategy of the new energy station, the monitoring system controls the new energy station, meanwhile, the execution effect of the active control instruction is monitored according to the actual measurement information collected by the execution station control device, if the active real-time control strategy of the new energy station is to reduce the active power of the new energy station and the active power of the new energy station is still larger than the active control instruction value after the set time is over, the difference value of the real-time active power and the active control instruction value of the new energy station is used as the active control quantity of the execution station for carrying out emergency control on the new energy station according to the real-time operation information and the actual measurement information of the control device collected by the execution, the executive station control device implements emergency control on the new energy station;
if the new energy station monitoring system is in k3T2If the active real-time control strategy of the control device of the executive station is not received within the time, the active real-time control strategy is executed according to the active on-line control strategy issued by the central station of the dispatching end, wherein k3Greater than k2Usually set to 2 if the new energy station monitoring system is at k3T2And if the active real-time control strategy of the executive station control device is not received within the time, and the active on-line control strategy issued by the central station of the dispatching end is not received, taking the maximum value of the real-time active of the new energy station collected by the monitoring system of the station and the minimum reserved capacity set by the new energy station as the active control instruction value corresponding to the active real-time control strategy of the new energy station, and controlling the new energy station until the active on-line control strategy of the new energy station issued by the executive station control device or the central station of the dispatching end can be received.
Although the present invention has been described in terms of the preferred embodiment, it is not intended that the invention be limited to the embodiment. Any equivalent changes or modifications made without departing from the spirit and scope of the present invention also belong to the protection scope of the present invention. The scope of the invention should therefore be determined with reference to the appended claims.

Claims (3)

1. New forms of energy are incorporated into power networks active high reliability automatic control system, its characterized in that, control system includes dispatch end central station and station end control station, wherein:
the substation end control station is divided into a substation end control station of the non-new energy station and a control station in the new energy station, the substation end control station of the non-new energy station is called a control substation for short, and the control station in the new energy station is called an execution station for short;
the control substation comprises a control device of the control substation and an in-station monitoring system, wherein the in-station monitoring system runs a real-time information acquisition and collection module, a real-time information uploading module, a new energy field active online control strategy receiving module, a new energy field active real-time control strategy generating module and a new energy field active real-time control strategy issuing module of the control substation;
the execution station comprises a control device of the execution station and a station monitoring system, wherein the station monitoring system runs a real-time information acquisition module, a real-time information uploading module, a new energy station active real-time control strategy receiving module and a new energy station active real-time control strategy execution module of the execution station;
the dispatching terminal central station operates a station terminal control station real-time information collecting module of the dispatching terminal central station, a new energy station active online control strategy calculating module, a new energy station active online control strategy issuing module and a new energy station active online control strategy calculating and controlling module;
the plant station end control station real-time information collecting module of the dispatching end central station is responsible for receiving real-time operation information and actual measurement information of the control devices sent by the control substation and the execution station according to the set period of the dispatching end central station collecting the plant station end control station real-time information, generating an identification for judging the adaptability of the active online control strategy of the new energy field station according to the collected real-time information, calling the identification as a central station mode character, and collecting the set dispatching end central station into the plant station end control station real-time informationThe period of the time information is recorded as T1；
The active online control strategy calculation module of the new energy field station of the dispatching end central station is responsible for acquiring the latest power grid state estimation data from the power grid regulation and control system, if the time length between the power grid running time corresponding to the latest power grid state estimation data and the current time is longer than the set effective time length of the power grid state estimation data, acquiring the latest power grid state estimation data again until the time length between the power grid running time corresponding to the latest power grid state estimation data and the current time is less than or equal to the set effective time length of the power grid state estimation data, then taking the central station mode word as the mark of the online strategy, calling the mark of the online strategy as the online strategy mode word, generating a set of controllable new energy field stations and controllable quantity thereof according to the structure of the control system and the real-time information of the execution station, and recording the set as C, and collecting the control substation based on the real-time information collection module of the plant end control station, Generating load flow calculation data reflecting the real-time operation state of the power grid by executing actual measurement information sent by the station and the latest power grid state estimation data, and finally calculating power grid operation constraint and spot transaction constraint based on the real-time load flow calculation data of the power grid and the active power output prediction data of the new energy field station in the step C, and obtaining an active online control strategy of the new energy field station and a corresponding active control strategy of a conventional power station by optimizing and calculating the aim of maximizing the sum of the active power output of the new energy field station in the step C;
the active online control strategy issuing module of the new energy field station of the dispatching end central station is responsible for decomposing and issuing the active online control strategy and the online strategy mode word of the new energy field station to a corresponding control substation according to a control system structure when the active online control strategy calculation module of the new energy field station generates the active online control strategy of the new energy field station, if the control substation stops or is abnormal, the active online control strategy of the new energy field station which is responsible for being implemented by the control substation is directly issued to a corresponding execution station according to the execution station decomposition according to the control system structure until the stopped or abnormal control substation returns to normal operation;
new energy of said dispatching terminal central stationThe active online control strategy calculation control module of the source station is responsible for carrying out the following processing when the real-time information collection module of the station end control station generates a central station mode character: if the central station mode word is inconsistent with the online strategy mode word or the time length between the current time and the starting time of the active online control strategy calculation module of the previous new energy field station is greater than the set active online control strategy calculation period of the new energy field station, starting the operation of the active online control strategy calculation module of the new energy field station, and recording the set active online control strategy calculation period of the new energy field station as T2，T2Greater than T1；
The real-time information acquisition and collection module of the control substation is responsible for acquiring real-time running information and actual measurement information of a control device of the control substation, collecting the collected real-time information of the related control substation and the real-time information collected by the related execution station according to the structure of the control system and the set information interaction period between the control stations at the plant terminal, generating a mode identifier of the control substation according to the collected and collected real-time information, calling the identifier as a 'control substation mode character', and recording the set information interaction period between the control stations at the plant terminal as T3，T3Less than T1；
The real-time information uploading module of the control substation is responsible for transmitting the real-time information according to the T according to the structure of the control system1Periodically sending the real-time running information and the actual measurement information of the control device collected and collected by the dispatching terminal central station to the dispatching terminal central station, and according to the control system structure and T3The real-time running information and the actual measurement information of the control device collected and converged by the control substation are periodically sent to the corresponding control substations;
the active online control strategy receiving module of the new energy field station of the control substation is responsible for receiving an active online control strategy and an online strategy mode word of the new energy field station issued by the central station of the dispatching end after the control substation is decomposed according to the control system structure;
the active real-time control strategy generation module of the new energy field of the control substation is responsible for receiving the active on-line control strategy receiving module of the new energy field of the control substationWhen the active online control strategy of the new energy field station and the online strategy mode word are issued by the central station of the dispatching terminal, if the online strategy mode word is consistent with the control substation mode word, the received active online control strategy of the new energy field station is taken as the active real-time control strategy of the new energy field station, and if the online strategy mode word is inconsistent with the control substation mode word or at k1T2If the active online control strategy and the online strategy mode word of the new energy station issued by the central station of the dispatching terminal are not received within the time, searching the current value control strategy from the offline strategy table according to the real-time information collected and collected by the station, and taking the current value control strategy as the active real-time control strategy of the new energy station, wherein k is1Is a setting parameter greater than 1;
the active real-time control strategy issuing module of the new energy station of the control substation is responsible for decomposing and issuing the active real-time control strategy of the new energy station to a corresponding execution station according to the structure of the control system when the active real-time control strategy generating module of the new energy station of the control substation generates the active real-time control strategy of the new energy station,
the real-time information acquisition module of the execution station is responsible for acquiring real-time operation information and actual measurement information of the control device of the execution station;
the real-time information uploading module of the execution station is responsible for transmitting the real-time information according to the T according to the structure of the control system3The real-time running information and the actual measurement information of the control device collected by the station are periodically sent to the corresponding control substation according to T1Directly sending the real-time running information and the actual measurement information of the control device acquired by the dispatching terminal to a central station of the dispatching terminal periodically;
the active real-time control strategy receiving module of the new energy field of the executive station is responsible for receiving the active real-time control strategy of the new energy field issued by the control substation, if the active real-time control strategy is at k2T2If the active real-time control strategy of the new energy field station issued by the control substation is not received within the time, the received active on-line control strategy of the new energy field station issued by the central station of the dispatching end is used as the active real-time control strategy of the new energy field station until the active real-time control strategy of the new energy field station issued by the control substation can be receivedThe station active real-time control strategy is not, if k is2T2Within the time, the active real-time control strategy information of the new energy field station issued by the control substation is not received, and the active on-line control strategy information of the new energy field station issued by the central station of the dispatching end is not received, then the maximum value of the real-time active of the new energy field station collected by the station after the real-time active of the new energy field station is reduced according to the set proportion and the minimum reserved capacity set by the new energy field station is used as the active control instruction value corresponding to the active real-time control strategy of the new energy field station until the active real-time control strategy of the new energy field station issued by the control substation or the central station of the dispatching end can be received, wherein k2Greater than k1；
The active real-time control strategy execution module of the new energy station of the execution station is responsible for sending an active control instruction value corresponding to the active real-time control strategy of the new energy station to a new energy station monitoring system when the active real-time control strategy receiving module of the new energy station of the execution station generates the active real-time control strategy of the new energy station, the monitoring system controls the new energy station, simultaneously monitors the active control instruction execution effect according to the actual measurement information acquired by the execution station control device, if the active real-time control strategy of the new energy station is to reduce the active output of the new energy station and the active output of the new energy station is still larger than the active control instruction value after the set time is over, the difference value of the real-time active and active control instruction values of the new energy station is used as the active control quantity of the execution station for carrying out emergency control on the new energy station according to the real-time operation information and the actual measurement information of the control device acquired by the execution station, the executive station control device implements emergency control on the new energy station;
if the new energy station monitoring system is in k3T2If the active real-time control strategy of the control device of the executive station is not received within the time, the active real-time control strategy is executed according to the active on-line control strategy issued by the central station of the dispatching end, wherein k3Greater than k2If the new energy station monitoring system is at k3T2If the active real-time control strategy of the control device of the execution station is not received within the time, and the active on-line control strategy issued by the central station of the dispatching end is not received, the active real-time control strategy will be executedThe maximum value of the real-time active power of the new energy station acquired by the station monitoring system and the minimum reserved capacity set by the new energy station is used as an active control instruction value corresponding to an active real-time control strategy of the new energy station, and the new energy station is controlled until an active on-line control strategy of the new energy station issued by an execution station control device or a central station of a dispatching end can be received.
2. The new energy grid-connected active high-reliability automatic control system according to claim 1, characterized in that the control device of the control substation is installed in a substation to which a safe and stable power transmission section related to new energy grid-connected active control is connected.
3. The new energy grid-connected active high-reliability automatic control system according to claim 1, characterized in that when the new energy field active online control strategy calculation module of the dispatching terminal central station generates a new energy field active online control strategy and a corresponding conventional power station active control strategy, the conventional power station is controlled by the power grid regulation and control system according to the conventional power station active control strategy.
CN201711417518.5A 2017-12-25 2017-12-25 New energy grid-connected active high-reliability automatic control system Active CN108173261B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711417518.5A CN108173261B (en) 2017-12-25 2017-12-25 New energy grid-connected active high-reliability automatic control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711417518.5A CN108173261B (en) 2017-12-25 2017-12-25 New energy grid-connected active high-reliability automatic control system

Publications (2)

Publication Number Publication Date
CN108173261A CN108173261A (en) 2018-06-15
CN108173261B true CN108173261B (en) 2021-03-12

Family

ID=62520282

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711417518.5A Active CN108173261B (en) 2017-12-25 2017-12-25 New energy grid-connected active high-reliability automatic control system

Country Status (1)

Country Link
CN (1) CN108173261B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108767856B (en) * 2018-06-27 2021-07-30 广东电网有限责任公司 Universal stability control system and control method thereof
CN109726894B (en) * 2018-11-30 2022-08-19 国电南瑞科技股份有限公司 New energy active instruction calculation method for guaranteeing spot transaction and medium and long-term electric quantity
CN111030099B (en) * 2019-12-13 2021-05-07 国网北京市电力公司 Control method and device of power distribution system
CN112087003B (en) * 2020-08-27 2022-06-03 国网电力科学研究院有限公司 New energy centralized frequency correction control system and control method
CN112910003A (en) * 2021-03-09 2021-06-04 青海绿能数据有限公司 New energy generator set grid-connected operation real-time monitoring system and fault control method thereof
CN113497461B (en) * 2021-09-08 2021-11-23 西南交通大学 Three-phase traction network distributed power generation and supply system and control method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106230032B (en) * 2016-09-17 2019-06-04 河北工业大学 A kind of wind farm group production scheduling operational system based on power dispatch data network
CN107026461A (en) * 2017-05-11 2017-08-08 南京南瑞继保电气有限公司 A kind of new energy station participates in the fast power control method for coordinating of primary frequency modulation

Also Published As

Publication number Publication date
CN108173261A (en) 2018-06-15

Similar Documents

Publication Publication Date Title
CN108173261B (en) New energy grid-connected active high-reliability automatic control system
CN201608541U (en) Solar-energy photovoltaic intelligent power station based on Ethernet
CN102064562B (en) Active power optimization method for combined transmission of wind power and thermal power
CN102668299B (en) The power regulating system of solar power plant
CN102593860A (en) Automatic generation control and automatic voltage control integrated substation system of power plant
CN210422883U (en) Multi-wind-field fan electric centralized control system based on c/s framework
CN108173267B (en) Offshore wind power plant and island microgrid combined monitoring system
CN115833402B (en) Artificial intelligent network command management and issuing system based on power dispatching
CN104283222A (en) Regional power grid reactive voltage control system
CN109494877A (en) Marine wind electric field integrated monitoring method, apparatus, computer equipment and medium
CN113554352A (en) Regional power grid electric energy distribution and scheduling system and method
CN115392547A (en) Virtual power plant energy comprehensive control platform based on data analysis
CN113949075A (en) New energy network source coordinated frequency modulation and inertia support online monitoring and analysis system and method
CN202651899U (en) Automatic voltage control system for wind power plant
CN114583749A (en) Operation control method and system for microgrid, electronic device and storage medium
CN202121383U (en) Automatic voltage control system of regional electrical network
CN109560608B (en) Intelligent management and control system of distributed photovoltaic access power distribution network
CN111275578A (en) Dispatching automation system
CN103138293A (en) Optimal distribution method and system for heat-engine plant plant-level loads
CN113515831B (en) Energy scheduling method and device, electronic equipment and storage medium
CN114696370A (en) Primary frequency modulation wind power cluster control system, method and device
CN113659704A (en) Remote monitoring system for new energy power station
CN219372094U (en) New energy station panoramic monitoring system
CN113964940B (en) Production regulation and control method based on demand response terminal and PLC system
CN117477794B (en) Power distribution station power consumption management optimization system and method based on gateway machine data exchange

Legal Events

Date Code Title Description
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