CN112510766A - Energy storage microgrid and smart factory management system based on renewable energy source coupling power generation - Google Patents
Energy storage microgrid and smart factory management system based on renewable energy source coupling power generation Download PDFInfo
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- H—ELECTRICITY
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- H02J—ELECTRIC POWER NETWORKS; 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 feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/381—Dispersed generators
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- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/30—Control
- G16Y40/35—Management of things, i.e. controlling in accordance with a policy or in order to achieve specified objectives
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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
- H02J3/28—Arrangements for balancing of the load in networks by storage of energy
- H02J3/32—Arrangements for balancing of the load in networks by storage of energy using batteries or super capacitors with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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 feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/46—Controlling the sharing of generated power between the generators, sources or networks
- H02J3/466—Scheduling or selectively controlling the operation of the generators or sources, e.g. connecting or disconnecting generators to meet a demand
- H02J3/472—Scheduling or selectively controlling the operation of the generators or sources, e.g. connecting or disconnecting generators to meet a demand for selectively connecting the AC sources in a particular order, e.g. sequential, alternating or subsets of sources
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- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/20—Dispersed power generation using renewable energy sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/20—Dispersed power generation using renewable energy sources
- H02J2101/22—Solar energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/20—Dispersed power generation using renewable energy sources
- H02J2101/28—Wind energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/40—Hybrid power plants, i.e. a plurality of different generation technologies being operated at one power plant
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2103/00—Details of circuit arrangements for mains or AC distribution networks
- H02J2103/30—Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2103/00—Details of circuit arrangements for mains or AC distribution networks
- H02J2103/30—Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks
- H02J2103/35—Grid-level management of power transmission or distribution systems, e.g. load flow analysis or active network management
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- 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
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Abstract
本发明涉及一种基于可再生能源耦合发电的储能微电网及智慧厂区管理系统，包括：可再生能源耦合发电系统、储能微电网系统和智慧厂区管理系统；可再生能源耦合发电系统包括接入系统、生物质发电机组、厂区变、高压厂用电系统和低压厂用电系统；储能微电网系统包括分布式可再生能源发电机组、能量转化装置、储能系统和直流负荷；智慧厂区管理系统包括智慧灯杆系统和智慧管理平台。本发明的有益效果是：提高分布式可再生能源发电机组在厂用电系统中的渗透率、有效运行时间和能源利用率；建立可再生能源耦合发电系统能效评估模型、设备动态管理模型及生产安全环保数据库，实现能效评估、生产环保数据统计、分发、预测(预警)和智能调度等功能。
The invention relates to an energy storage microgrid and a smart factory area management system based on renewable energy coupled power generation, including: a renewable energy coupled power generation system, an energy storage microgrid system and a smart factory area management system; the renewable energy coupled power generation system includes a energy storage system, biomass power generation unit, plant area transformer, high-voltage power plant power system and low-voltage power plant power system; energy storage microgrid system includes distributed renewable energy generating set, energy conversion device, energy storage system and DC load; smart factory area The management system includes a smart light pole system and a smart management platform. The beneficial effects of the invention are: improving the penetration rate, effective running time and energy utilization rate of the distributed renewable energy generating set in the power consumption system of the plant; establishing the energy efficiency evaluation model of the renewable energy coupled power generation system, the equipment dynamic management model and the production The safety and environmental protection database realizes the functions of energy efficiency assessment, production and environmental protection data statistics, distribution, prediction (early warning) and intelligent scheduling.
Description
Technical Field
The invention relates to the technical field of energy efficiency of energy internet, in particular to an energy storage micro-grid and intelligent plant management system based on coupling power generation of renewable energy sources; the biomass direct-fired power plant is suitable for building or planning to build biomass direct-fired power plants such as waste incineration, agriculture and forestry waste incineration or sludge incineration of renewable energy source units such as distributed photovoltaic generator sets and wind generating sets.
Background
With the deep transition from relying on traditional fossil energy to pursuing clean and efficient energy in the global energy pattern, the energy structure of China is undergoing unprecedented deep adjustment. The development of clean energy is rapid no matter from the total electric energy structure, the incremental installation structure and the unit power generation cost, and the clean energy becomes important force for accelerating the structural reform of the supply side of the energy field in China. The world observational research institute reports believe that: by 2050, the renewable energy of China can reach 40-45% of the total energy demand. However, the access of the highly permeable renewable distributed energy sources can also bring great impact and challenge to the traditional power grid.
At present, the most main forms of power generation by renewable energy sources are solar energy and wind energy, and the two energy sources cannot be stored per se. In addition, due to the influence of natural weather factors, the power generation of renewable energy sources such as wind energy, solar energy and the like has strong volatility, intermittency and uncertainty, and is difficult to predict, particularly strong seasonality. Compared with the traditional energy power generation, the controllability of the renewable energy power generation is poor, the fluctuation and randomness of the renewable energy power generation bring more uncertainty to a power system, the wind curtailment rate in Gansu province is as high as 47% and the wind curtailment rate in Xinjiang province is 45% in 2016 last half of a year. Meanwhile, wind power, solar energy and ocean energy all have the characteristics of intermittence and randomness, the basic pattern of the one-way tide of the traditional power distribution network is changed by the access of renewable energy sources, and the normal voltage level, the short-circuit current and the power supply reliability can be seriously influenced. With the access of various large-scale renewable energy sources to the power grid, traditional power equipment, power grid structures, operation technologies and the like are increasingly inattentive to accepting ultra-large-scale and low-quality renewable energy sources.
Meanwhile, under the energy crisis and environmental constraints, coupling and complementation of renewable energy sources become hot spots for research and discussion in recent years, and the problem of how to improve the utilization rate of comprehensive energy sources by complementary utilization of multiple energy sources on the premise of environmental friendliness becomes a main concern of countries in the world, so that energy efficiency management of the renewable energy sources is particularly important. At present, energy efficiency management of an energy system is mainly performed on a combined cooling heating and power system, and energy efficiency management of the energy system which complementarily operates power generation of various renewable energy sources is less.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an energy storage microgrid and an intelligent factory management system based on coupling power generation of renewable energy sources.
This kind of energy storage microgrid and wisdom factory management system based on renewable energy coupling electricity generation includes: the system comprises a renewable energy source coupling power generation system, an energy storage microgrid system and an intelligent factory management system; the renewable energy source coupling power generation system comprises an access system, a biomass power generation unit, a plant transformer, a high-voltage plant power system and a low-voltage plant power system; the energy storage micro-grid system comprises a distributed renewable energy generator set, an energy conversion device, an energy storage system and a direct current load; the intelligent factory management system comprises an intelligent lamp post system and an intelligent management platform;
one end of the access system is connected with a power grid, the other end of the access system is divided into two paths, and each path is respectively connected with a biomass generator set, a plant area transformer and a high-voltage station service system;
one plant transformer is divided into two paths to be respectively connected with a low-voltage plant power system and a distributed renewable energy generating set, the distributed renewable energy generating set connected with the plant transformer is connected with an energy conversion device, and the energy conversion device is respectively connected with an energy storage system, a direct current load and an intelligent lamp post system;
the other plant area is divided into three paths to be respectively connected with the low-voltage plant power system, the distributed renewable energy power generating set and the energy conversion device; the distributed renewable energy power generator set connected with the plant transformer is also connected with an energy conversion device, and the energy conversion device is respectively connected with the direct current load and the intelligent lamp post system; the two energy conversion devices which are directly connected and indirectly connected with the plant transformer are connected into an energy storage system, and the energy storage system is connected with an intelligent management platform;
the biomass generator set is a standby power supply of the energy storage micro-grid system; the distributed renewable energy power generating set is used as a core power supply of the energy storage micro-grid system and is coupled with the biomass power generating set through the inverter and the low-voltage station service system; the intelligent management platform is independently connected with an energy storage system for power supply;
when the generated energy of the biomass generator set is used by the high-voltage station service power system and the low-voltage station service power system, the residual electric quantity of the biomass generator set is merged into a power grid by the access system; when the biomass generating set breaks down or stops, after the generated energy of the distributed renewable energy generating set meets the power supply of the energy storage system, the direct current load and the intelligent lamp post system, the residual electric quantity of the distributed renewable energy generating set is converted into alternating current through the inverter and then is absorbed through the low-voltage station service system;
when the distributed renewable energy generator set fails or stops to generate power and the electric quantity of the energy storage microgrid system is not enough to maintain the power supply of the direct current load, the intelligent lamp pole system and the intelligent management platform, the intelligent management platform switches the biomass generator set from the standby power supply to the power supply, and part of the electric quantity of the biomass generator set enters the energy storage system, the direct current load and the intelligent lamp pole system from the energy conversion device; and after the distributed renewable energy generator set recovers power generation, the power supply line of the biomass generator set is disconnected, and the distributed renewable energy generator set supplies power to the energy storage system, the direct current load and the intelligent lamp pole system again.
Preferably, the biomass generator set is a garbage direct-combustion generator set, an agricultural and forestry waste direct-combustion generator set or a sludge direct-combustion generator set; the distributed renewable energy generator set is a roof photovoltaic generator set, a wind generating set or a wind-solar hybrid generator set, and preferably a roof photovoltaic generator set.
Preferably, the energy storage system is composed of an energy storage battery, a Battery Management System (BMS), an energy storage converter (PCS), a coordinated control system (PMS), an Energy Management System (EMS) and a bus transformer; the energy storage battery is a lithium iron phosphate battery, the energy storage converter (PCS) is a DC/AC bidirectional converter, the Energy Management System (EMS) can realize the functions of real-time monitoring, power control and the like, and the energy storage system is charged and discharged by controlling the PCS.
Preferably, the intelligent management platform comprises a virtual server, virtual software, a hard disk storage, a switch and data acquisition equipment; the production operation and environment protection data of the biomass generator set, the production operation data of the distributed renewable energy generator set, the online collection and integration of information such as equipment conditions and energy consumption data of a high-voltage plant power system, a low-voltage plant power system, a direct-current load, a smart lamp post system and the like can be realized, a plant area core equipment dynamic management model and a production large database are established, and the functions of production and environment protection data statistics, distribution, prediction (early warning), intelligent scheduling and the like are realized. The intelligent management platform can also perform corresponding module adjustment according to different functional requirements and renewable energy coupling types of the power plant, and has better adaptability and specialty.
Preferably, the voltage grade of the high-voltage station power system is 6kV or 10 kV; the low-voltage station service power system is divided into a first section of station bus and a second section of station bus, and the voltage grade of the low-voltage station service power system is 380V.
The working method of the energy storage micro-grid and intelligent factory management system based on coupling power generation of renewable energy sources specifically comprises the following steps:
step one, when the biomass generator set operates normally, the normal power utilization of all auxiliary machines is met through a high-voltage station service power system and a low-voltage station service power system; when renewable energy sources such as illumination or wind power and the like are sufficient, the distributed renewable energy source generator set converts the renewable energy sources into direct current, the direct current is converted into stable direct current through the energy conversion device, then direct current power supply is carried out on the energy storage system, the direct current load, the intelligent lamp rod system and the intelligent management platform, and the residual generated energy of the distributed renewable energy source generator set is converted into alternating current through the inverter and then is absorbed through the low-voltage plant power system; when the renewable energy is insufficient, the distributed renewable energy generator set does not generate electricity; the system can effectively replace part of the power consumption of the biomass generator set in the original plant and increase the power on the internet, and the organic coupling of biomass power generation and the power generation of renewable energy sources such as wind and light is well realized while the generated energy of the distributed renewable energy generator set is used automatically;
when the biomass generating set fails or stops to generate power, the distributed renewable energy generating set firstly supplies power to the intelligent lamp pole system meeting the requirements of an energy storage system, a direct current load; when the distributed renewable energy generator set fails or stops to generate power and the electric storage quantity of the energy storage micro-grid system is lower than a set value, the distributed renewable energy generator set is immediately switched to the biomass generator set to serve as a standby power supply; after the biomass generating set converts alternating current generated by the biomass generating set into direct current through the energy conversion device, the energy storage system, the direct current load and the intelligent lamp pole system are powered; when the distributed renewable energy generator set recovers power generation, a power supply circuit of the biomass generator set is immediately disconnected, and the distributed renewable energy generator set returns to the direct power supply mode of the distributed renewable energy generator set;
the intelligent management platform is used for acquiring production operation data and environment protection data of the biomass generator set and the distributed renewable energy generator set in real time, acquiring equipment conditions and energy consumption data of a high-voltage plant power system, a low-voltage plant power system, a direct current load, an intelligent lamp post system and the like in real time to form a large production database, performing energy efficiency assessment and equipment dynamic management on the renewable energy coupling power generation system in real time after analysis and integration, generating a production and environment protection statistical report on line, and assisting equipment health diagnosis and maintenance early warning; meanwhile, an intelligent management platform is utilized to establish a historical database of distributed renewable energy power generation such as solar energy, wind energy and the like, and complete data support is provided for the popularization of subsequent similar distributed energy projects; the historical database belongs to a part of a production safety environment-friendly database, and is mainly used for specially establishing and analyzing renewable energy power generation data such as solar energy, wind energy and the like, determining parameters such as annual utilization hours, generating power and the like of photovoltaic power generation or wind power generation in a region, and providing experience reference for subsequent project reconstruction and extension or similar projects.
Step four, configuring a monitoring camera module for the intelligent lamp post system, and combining an auxiliary plant monitoring system with an additionally-installed one-key alarm module to perform safety monitoring management, so that power plant personnel can better perform on-site inspection work; the intelligent lamp post system consists of intelligent lamp posts distributed in a factory and each entrance and exit; the intelligent lamp post system is provided with an environment and weather monitoring device, and a small weather station in a factory can be constructed; the management software of each intelligent lamp pole is uniformly accessed to the intelligent management platform and is controlled by the intelligent management platform; every wisdom lamp pole all disposes and fills electric pile, can provide charging service for electric automobile etc. the wisdom lamp pole still disposes the LED display screen, the power plant production operation data and the environmental protection data of real-time display wisdom management platform propelling movement, the wisdom illumination of factory is realized to accessible wisdom management platform, safety monitoring, a key alarm, intelligence is patrolled and examined, environment and meteorological monitoring, fill functions such as electric pile and production environmental protection data real-time display, found intelligent, digital, humanized factory intelligence management system.
Preferably, the generated energy of the distributed renewable energy generator set in the first step is generated energy without considering grid connection access; in the first step, the direct current load comprises power equipment of an administrative area, plant illumination and direct current motor equipment of a production workshop, and a charging pile of an electric production vehicle of the plant is reserved in the direct current load.
Preferably, the set value of the electric energy storage amount of the energy storage microgrid system in the step two is 20%.
Preferably, the capacity of the energy storage system in the first step and the second step is determined by the direct current load, the power load of the intelligent lamp pole system, the power load of the intelligent management platform and the average daily shutdown time of the distributed renewable energy generator set; the installation quantity of wisdom lamp pole depends on factory access & exit quantity and factory monitoring area in step four.
Preferably, the equipment conditions and energy consumption data of the high-voltage station power system, the low-voltage station power system, the direct current load and the intelligent lamp post system in the third step are purposefully integrated through an algorithm in a built-in program of the intelligent management platform; in the third step, the intelligent management platform needs to perform online acquisition and monitoring on data such as equipment monitoring temperature, inlet and outlet working medium pressure difference, oil pressure and the like besides online production and environmental protection statistical report generation, analyzes equipment operation parameters through pre-input empirical data to realize early warning of the health state of the equipment, performs long-period operation duration supervision on the equipment, and sends out early warning for reminding when the equipment is about to reach a given maintenance period node.
The invention has the beneficial effects that:
1. according to the invention, an energy storage micro-grid system and an intelligent plant management system are innovatively introduced on the basis of a biomass generator set and a distributed renewable energy generator set coupling power generation system, on one hand, the permeability of the distributed renewable energy generator set in a plant power system can be further improved by utilizing the energy storage micro-grid system, the effective running time and the energy utilization rate of the distributed renewable energy generator set are improved, the black start capability of the biomass generator set is improved, and the continuous power supply of illumination of administrative areas and plant areas can be ensured when the power grid is subjected to disaster or the external grid is overhauled.
2. The intelligent factory management system can achieve functions of factory intelligent lighting, intelligent monitoring, one-key alarming, environment and weather monitoring, charging pile, production and environmental protection data display and the like, and can fully construct an intelligent, digital and humanized factory intelligent management system.
3. Based on a distributed renewable energy generator set, the energy storage micro-grid system can directly provide electric energy for direct current load of a plant area on site, self-electricity consumed by power generation by adopting biomass such as garbage, agricultural and forestry wastes or sludge is replaced in an equivalent manner, and the service cost of the biomass generator set is reduced; the organic coupling of biomass power generation and power generation of renewable energy sources such as wind, light and the like is well realized.
4. And a renewable energy source coupling power generation system energy efficiency evaluation model, an equipment dynamic management model and a production safety and environmental protection database can be established, so that the functions of energy efficiency evaluation, production environmental protection data statistics, distribution, prediction (early warning), intelligent scheduling and the like are realized.
Drawings
Fig. 1 is a schematic diagram of an energy storage microgrid and an intelligent factory management system based on coupling power generation of renewable energy sources;
FIG. 2 is a diagram of a control strategy of the intelligent factory floor management system.
Description of reference numerals: the system comprises an access system 1, a biomass generator set 2, a factory transformer 3, a high-voltage factory power system 4, a low-voltage factory power system 5, a distributed renewable energy generator set 6, an energy conversion device 7, an energy storage system 8, a direct-current load 9, a smart lamp pole system 10 and a smart management platform 11.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for a person skilled in the art, several modifications can be made to the invention without departing from the principle of the invention, and these modifications and modifications also fall within the protection scope of the claims of the present invention.
The invention is suitable for biomass direct-fired power plants such as waste incineration, agriculture and forestry waste incineration or sludge incineration and the like which are built or planned to build renewable energy source units such as distributed photovoltaic generator sets, wind generating sets and the like.
Based on the energy storage micro-grid and the intelligent plant area management system of biomass direct-fired power plants such as waste incineration, agriculture and forestry waste incineration or sludge incineration and the like of renewable energy source coupling generator sets such as distributed photovoltaic generator sets, wind generating sets and the like which are built or planned to be built. The method comprises the following steps: the system comprises a renewable energy source coupling power generation system, an energy storage microgrid system and an intelligent factory management system; the renewable energy source coupling power generation system comprises an access system 1, a biomass power generation unit 2, a plant transformer 3, a high-voltage auxiliary power system 4 and a low-voltage auxiliary power system 5; the energy storage micro-grid system comprises a distributed renewable energy generator set 6, an energy conversion device 7, an energy storage system 8 and a direct current load 9; the intelligent factory management system comprises an intelligent lamp pole system 10 and an intelligent management platform 11; one end of the access system 1 is connected with a power grid, the other end of the access system 1 is divided into two paths, and each path is respectively connected with a biomass generator set 2, a plant transformer 3 and a high-voltage station service system 4; one of the station transformer 3 is divided into two paths to be respectively connected with a low-voltage station power system 5 and a distributed renewable energy power generator set 6, the distributed renewable energy power generator set 6 connected with the station transformer 3 is connected with an energy conversion device 7, and the energy conversion device 7 is respectively connected with an energy storage system 8, a direct current load 9 and a smart lamp post system 10; the other station transformer 3 is divided into three paths to be respectively connected with a low-voltage station power system 5, a distributed renewable energy power generating set 6 and an energy conversion device 7; the distributed renewable energy generator set 6 connected with the plant transformer 3 is also connected with an energy conversion device 7, and the energy conversion device 7 is respectively connected with a direct current load 9 and an intelligent lamp pole system 10; the two energy conversion devices 7 which are directly connected and indirectly connected with the plant transformer 3 are connected into an energy storage system 8, and the energy storage system 8 is connected with an intelligent management platform 11; the biomass generator set 2 is a standby power supply of the energy storage micro-grid system, and the biomass generator set 2 is a garbage direct-fired generator set, an agricultural and forestry waste direct-fired generator set or a sludge direct-fired generator set; the distributed renewable energy generator set 6 is a roof photovoltaic generator set; the distributed renewable energy generator set 6 is used as a core power supply of the energy storage micro-grid system, and the distributed renewable energy generator set 6 is coupled with the biomass generator set 2 through the inverter and the low-voltage plant power system 5; the intelligent management platform 11 is independently connected with the energy storage system 8 for power supply; the energy storage system 8 is composed of an energy storage battery, a battery management system, an energy storage converter, a coordination control system, an energy management system and a confluence transformer; the intelligent management platform 11 comprises a virtual server, virtual software, a hard disk storage, a switch and data acquisition equipment; the voltage grade of the high-voltage station service system 4 is 6kV or 10 kV; the low-voltage station service power system 5 is divided into a station bus of I section and a station bus of II section, and the voltage grade of the low-voltage station service power system 5 is 380V.
When the generated energy of the biomass generator set 2 is used by itself through the high-voltage station power system 4 and the low-voltage station power system 5, the residual electric quantity of the biomass generator set 2 is merged into a power grid through the access system 1; when the biomass generator set 2 is in fault or is shut down, after the generated energy of the distributed renewable energy generator set 6 meets the power supply of the energy storage system 8, the direct current load 9 and the intelligent lamp post system 10, the residual electric quantity of the distributed renewable energy generator set 6 is converted into alternating current through the inverter and then is consumed through the low-voltage station service system 5; when the distributed renewable energy generator set 6 fails or stops to generate power and the electric quantity of the energy storage microgrid system is not enough to maintain the power supply of the direct current load 9, the intelligent lamp pole system 10 and the intelligent management platform 11, the intelligent management platform 11 switches the biomass generator set 2 from the standby power supply to the power supply, and part of the electric quantity of the biomass generator set 2 enters the energy storage system 8, the direct current load 9 and the intelligent lamp pole system 10 from the energy conversion device 7; after the distributed renewable energy generator set 6 recovers power generation, the power supply line of the biomass generator set 2 is disconnected, and the distributed renewable energy generator set 6 supplies power to the energy storage system 8, the direct current load 9 and the intelligent lamp pole system 10 again.
As an embodiment, before implementation, by taking configuring a distributed photovoltaic generator set as an example, first, it is necessary to know the illumination intensity and illumination time of an area where a power station is located, the area of the top of an idle factory building or a material shed and the intensity of ceiling materials, the power capacity of lighting in administrative areas and factory areas, the distribution requirement of smart lamp posts in factory areas, the power capacity of direct current loads in workshops, the energy supply requirement of a power plant to a smart management platform, the module composition of a smart lamp post system, and the like, and select appropriate information such as the scale of the distributed photovoltaic generator set, the direct current load access capacity, a smart management platform model, and a smart lamp post system module according to the known information.
Taking an agriculture and forestry waste direct-combustion power plant with a certain installed capacity of 30MW as an example, a biomass dry material shed with a ceiling area of 2 ten thousand square meters is arranged. Through investigation, the annual illumination utilization time of the area where the power station is located is about 1088.8h, the solar energy resources are considerable, and after accounting and reinforcement treatment on the top of a dry material shed with the coverage area of more than 2 ten thousand square meters, a 2048 kW-capacity distributed photovoltaic generator set can be arranged.
The direct current load mainly has the illumination of factory (power about 5kW), administrative region consumer (power about 10kW) and the desalination water pump of changing between waterwheel (1 platform, power 30kW), and wisdom lamp pole system is including filling electric pile, illumination, monitoring detection and consumer such as LED screen, and 10 lamp poles total power about 20kW, wisdom management platform power consumption about 5kW, and direct current power load total power capacity is about 70 kW. In order to realize the full-time operation of the energy storage microgrid, an energy storage system is required to be configured to meet the requirement of power supply of a direct-current microgrid load outside the illumination time, the energy storage capacity of 14h is considered, the total power capacity of the direct-current power load is about 70kW, the capacity of the energy storage system is 1MWh, the starting current factor is considered, and the PCS power of the energy storage system is temporarily set to be 180 kW.
The intelligent management platform model energy supply requirements mainly comprise the functions of unit equipment dynamic monitoring management, renewable energy coupling power generation system energy efficiency assessment, production report statistics and generation, maintenance cycle early warning, intelligent lamp post system intelligent management and the like. By configuring an energy storage microgrid and a smart factory management system based on renewable energy coupling power generation, the energy storage system, direct current load and smart lamp pole system power consumption in daytime can be met every year, 160 kWh of biomass generator set original factory power consumption can be equivalently replaced, biomass power generation income is increased by about 120 ten thousand yuan/year, meanwhile, through the combination form of the smart management platform and the smart lamp pole system, a humanized, digital and intelligent smart factory can be created, the functions of intelligent factory monitoring, smart inspection, small-sized meteorological stations, charging piles, real-time production environment protection data display and the like can be realized, intelligent health management and safety management can be carried out on factory power generation equipment and power consumption equipment, and production data statistics, intelligent equipment and power consumption scheduling and equipment regular maintenance early warning can be assisted by production departments.
Claims (10)
1. Energy storage microgrid and wisdom factory management system based on renewable energy coupling electricity generation, its characterized in that includes: the system comprises a renewable energy source coupling power generation system, an energy storage microgrid system and an intelligent factory management system; the renewable energy source coupling power generation system comprises an access system (1), a biomass power generation unit (2), a plant transformer (3), a high-voltage plant power system (4) and a low-voltage plant power system (5); the energy storage micro-grid system comprises a distributed renewable energy generator set (6), an energy conversion device (7), an energy storage system (8) and a direct current load (9); the intelligent factory management system comprises an intelligent lamp post system (10) and an intelligent management platform (11); one end of the access system (1) is connected with a power grid, the other end of the access system (1) is divided into two paths, and each path is respectively connected with a biomass generator set (2), a plant transformer (3) and a high-voltage plant power system (4);
one plant transformer (3) is divided into two paths to be connected with a low-voltage plant power system (5) and a distributed renewable energy generating set (6), the distributed renewable energy generating set (6) connected with the plant transformer (3) is connected with an energy conversion device (7), and the energy conversion device (7) is connected with an energy storage system (8), a direct current load (9) and a smart lamp post system (10) respectively;
the other plant transformer (3) is divided into three paths to be respectively connected with the low-voltage plant power system (5), the distributed renewable energy power generating set (6) and the energy conversion device (7); the distributed renewable energy power generator set (6) connected with the plant transformer (3) is also connected with an energy conversion device (7), and the energy conversion device (7) is respectively connected with a direct current load (9) and an intelligent lamp post system (10); the two energy conversion devices (7) which are directly connected and indirectly connected with the plant transformer (3) are connected into an energy storage system (8), and the energy storage system (8) is connected with an intelligent management platform (11);
the biomass generator set (2) is a standby power supply of the energy storage micro-grid system; the distributed renewable energy power generating set (6) is used as a core power source of the energy storage micro-grid system, and the distributed renewable energy power generating set (6) is coupled with the biomass power generating set (2) through the inverter and the low-voltage plant power system (5); the intelligent management platform (11) is independently connected with the energy storage system (8) for power supply;
when the generated energy of the biomass generator set (2) is used by itself through the high-voltage plant power system (4) and the low-voltage plant power system (5), the residual electric quantity of the biomass generator set (2) is merged into a power grid through the access system (1); when the biomass generator set (2) breaks down or stops working, the generated energy of the distributed renewable energy generator set (6) meets the power supply of the energy storage system (8), the direct current load (9) and the intelligent lamp post system (10), and then the residual electric quantity of the distributed renewable energy generator set (6) is converted into alternating current through the inverter and then is absorbed through the low-voltage station power system (5);
when the distributed renewable energy generator set (6) fails or stops to generate power and the electric quantity of the energy storage micro-grid system is not enough to maintain the power supply of the direct current load (9), the intelligent lamp pole system (10) and the intelligent management platform (11); the intelligent management platform (11) switches the biomass generator set (2) from a standby power supply to a power supply, and partial electric quantity of the biomass generator set (2) enters the energy storage system (8), the direct-current load (9) and the intelligent lamp pole system (10) from the energy conversion device (7); after the distributed renewable energy generator set (6) recovers power generation, the power supply line of the biomass generator set (2) is disconnected, and the distributed renewable energy generator set (6) supplies power to the energy storage system (8), the direct current load (9) and the intelligent lamp pole system (10) again.
2. The energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation of claim 1, characterized in that: the biomass generator set (2) is a garbage direct-fired generator set, an agricultural and forestry waste direct-fired generator set or a sludge direct-fired generator set; the distributed renewable energy generator set (6) is a roof photovoltaic generator set.
3. The energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation of claim 1, characterized in that: the energy storage system (8) is composed of an energy storage battery, a battery management system, an energy storage converter, a coordination control system, an energy management system and a confluence transformer.
4. The energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation of claim 1, characterized in that: the intelligent management platform (11) comprises a virtual server, virtual software, a hard disk storage, a switch and data acquisition equipment.
5. The energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation of claim 1, characterized in that: the voltage grade of the high-voltage station power system (4) is 6kV or 10 kV; the low-voltage station power system (5) is divided into a first-section station bus and a second-section station bus, and the voltage level of the low-voltage station power system (5) is 380V.
6. The operating method of the energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation as claimed in claim 1, comprising the following steps:
step one, when the biomass generator set (2) normally operates, the normal power utilization of all auxiliary machines is met through the high-voltage station power utilization system (4) and the low-voltage station power utilization system (5); when the renewable energy is sufficient, the distributed renewable energy generator set (6) converts the renewable energy into direct current, the direct current is converted into stable direct current through the energy conversion device (7), then direct current power supply is carried out on the energy storage system (8), the direct current load (9), the intelligent lamp post system (10) and the intelligent management platform (11), and the residual generated energy of the distributed renewable energy generator set (6) is converted into alternating current through the inverter and then is absorbed through the low-voltage power plant electricity utilization system (5); when the biomass generating set (2) fails or stops to generate power, the distributed renewable energy generating set (6) firstly supplies power to the energy storage system (8), the direct current load (9) and the intelligent lamp pole system (10); when the renewable energy is insufficient, the distributed renewable energy generator set (6) does not generate electricity;
step two, when the distributed renewable energy generator set (6) fails or stops to generate power and the electric storage quantity of the energy storage microgrid system is lower than a set value, switching to the biomass generator set (2) as a standby power supply; after the biomass generating set (2) converts alternating current generated by the biomass generating set (2) into direct current through the energy conversion device (7), the energy storage system (8), the direct current load (9) and the intelligent lamp pole system (10) are powered; after the distributed renewable energy generator set (6) recovers power generation, a power supply line of the biomass generator set (2) is disconnected, and the direct power supply mode of the distributed renewable energy generator set (6) is returned again;
step three, the intelligent management platform (11) collects production operation data and environmental protection data of the biomass generator set (2) and the distributed renewable energy generator set (6) in real time, the intelligent management platform (11) also collects equipment conditions and energy consumption data of the high-voltage station power system (4), the low-voltage station power system (5), the direct current load (9) and the intelligent lamp pole system (10) in real time, and after analysis and integration, a production and environmental protection statistical report is generated on line to assist equipment health diagnosis and maintenance early warning; meanwhile, a distributed renewable energy power generation historical database is established by using an intelligent management platform (11);
step four, the intelligent lamp post system (10) is provided with a monitoring camera module, and the auxiliary plant monitoring system is combined with a one-key alarm module to carry out safety monitoring management; the intelligent lamp post system (10) consists of intelligent lamp posts distributed in a factory area and each entrance and exit; the intelligent lamp post system (10) is provided with an environment and weather monitoring device to construct a small weather station of a factory; the management software of each intelligent lamp pole is uniformly accessed to the intelligent management platform (11) and is controlled by the intelligent management platform (11); each intelligent lamp pole is provided with a charging pile; the wisdom lamp pole still disposes the LED display screen, shows the power plant production operation data and the environmental protection data of wisdom management platform (11) propelling movement in real time.
7. The operating method of the energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation as claimed in claim 6, characterized in that: the generated energy of the distributed renewable energy generator set (6) in the first step is generated energy without considering grid connection access; in the step one, the direct current load (9) comprises power equipment of an administrative area, direct current motor equipment of a factory lighting and production workshop, and a charging pile of a factory electric production vehicle is reserved in the direct current load (9).
8. The operating method of the energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation as claimed in claim 6, characterized in that: and in the second step, the set value of the electric storage quantity of the energy storage micro-grid system is 20%.
9. The operating method of the energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation as claimed in claim 6, characterized in that: the capacity of the energy storage system (8) in the first step and the second step is determined by the direct current load (9), the power load of the intelligent lamp pole system (10), the power load of the intelligent management platform (11) and the daily average shutdown time of the distributed renewable energy generator set (6); the installation quantity of wisdom lamp pole depends on factory access & exit quantity and factory monitoring area in step four.
10. The operating method of the energy storage microgrid and intelligent factory floor management system based on renewable energy coupled power generation as claimed in claim 6, characterized in that: in the third step, equipment conditions and energy consumption data of the high-voltage station power system (4), the low-voltage station power system (5), the direct current load (9) and the intelligent lamp post system (10) are purposefully integrated through an internal program of the intelligent management platform (11); in the third step, the intelligent management platform (11) generates a production and environment-friendly statistical report on line, acquires and monitors the equipment monitoring temperature, the pressure difference of inlet and outlet working media and oil pressure data on line, analyzes the running parameters of the equipment by the aid of pre-input empirical data, early warns the health state of the equipment in advance, supervises the running time of the equipment for a long period, and sends out early warning to remind when the equipment is about to reach a given maintenance period node.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113328431A (en) * | 2021-04-29 | 2021-08-31 | 如皋景谦低碳环境科技有限公司 | Zero-carbon micro-grid system for residential building cells in multiple floors and below |
| CN113505963A (en) * | 2021-05-31 | 2021-10-15 | 国网河北省电力有限公司雄安新区供电公司 | Electric power characteristic block construction system |
| CN113674597A (en) * | 2021-09-02 | 2021-11-19 | 广东科学中心 | Biomass energy power generation interactive display device |
| CN116169709A (en) * | 2022-11-30 | 2023-05-26 | 浙江浙能滨海环保能源有限公司 | Coupled power generation system and control method based on sludge clean disposal and distributed photovoltaic |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328431A (en) * | 2021-04-29 | 2021-08-31 | 如皋景谦低碳环境科技有限公司 | Zero-carbon micro-grid system for residential building cells in multiple floors and below |
| CN113505963A (en) * | 2021-05-31 | 2021-10-15 | 国网河北省电力有限公司雄安新区供电公司 | Electric power characteristic block construction system |
| CN113674597A (en) * | 2021-09-02 | 2021-11-19 | 广东科学中心 | Biomass energy power generation interactive display device |
| CN113674597B (en) * | 2021-09-02 | 2022-11-22 | 广东科学中心 | Interactive display device for biomass energy power generation |
| CN116169709A (en) * | 2022-11-30 | 2023-05-26 | 浙江浙能滨海环保能源有限公司 | Coupled power generation system and control method based on sludge clean disposal and distributed photovoltaic |
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