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CN107248750A - A kind of accumulation energy type power governor and distribution system for distribution system - Google Patents

A kind of accumulation energy type power governor and distribution system for distribution system Download PDF

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Publication number
CN107248750A
CN107248750A CN201710437720.8A CN201710437720A CN107248750A CN 107248750 A CN107248750 A CN 107248750A CN 201710437720 A CN201710437720 A CN 201710437720A CN 107248750 A CN107248750 A CN 107248750A
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CN
China
Prior art keywords
converter
transformer
phase
type power
accumulation energy
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Pending
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CN201710437720.8A
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Chinese (zh)
Inventor
张坤
杨成
申浩平
肖涛
卿曦
周滨
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd, State Grid Hunan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201710437720.8A priority Critical patent/CN107248750A/en
Publication of CN107248750A publication Critical patent/CN107248750A/en
Pending legal-status Critical Current

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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
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase 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
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
    • H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
    • H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel converter
    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
    • H02M5/42—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
    • H02M5/44—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC
    • H02M5/453—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • 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
    • Y02E40/30—Reactive power compensation
    • 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
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Inverter Devices (AREA)

Abstract

本发明公开了一种用于配电系统的储能型功率调节器及配电系统，储能型功率调节器包括第一双绕组自耦变压器、第二双绕组自耦变压器以及储能型链式功率调节单元，所述储能型链式功率调节单元由储能型链式功率调节支路构成，储能型链式功率调节支路由依次串联的第一单相全桥AC‑DC变换器、第一双向DC‑DC变换器，储能装置、第二双向DC‑DC变换器、第二单相全桥DC‑AC变换器构成；配电系统包括配电变压器和负载，配电变压器低压侧的A相、B相以及B相、C相之间均连接有前述储能型功率调节器。本发明能够平衡配电变压器三相电流，提高变压器利用率，动态补偿负载无功功率，提高配网功率因数，快速补偿负载有功功率，提高负载供电可靠性。

The invention discloses an energy storage type power conditioner for a power distribution system and a power distribution system. The energy storage type power conditioner includes a first double-winding autotransformer, a second double-winding autotransformer and an energy storage type chain The energy storage type chain type power adjustment unit is composed of an energy storage type chain type power adjustment branch, and the energy storage type chain type power adjustment branch is composed of the first single-phase full-bridge AC-DC converter connected in series in sequence 1. The first bidirectional DC-DC converter, the energy storage device, the second bidirectional DC-DC converter, and the second single-phase full-bridge DC-AC converter; the power distribution system includes distribution transformers and loads, and the distribution transformers are low-voltage The aforementioned energy storage type power conditioner is connected between phase A and phase B, phase B and phase C on the side. The invention can balance the three-phase current of the distribution transformer, improve the utilization rate of the transformer, dynamically compensate the reactive power of the load, improve the power factor of the distribution network, quickly compensate the active power of the load, and improve the reliability of the load power supply.

Description

一种用于配电系统的储能型功率调节器及配电系统An energy storage type power conditioner for power distribution system and power distribution system

技术领域technical field

本发明涉及电力系统，具体涉及一种用于配电系统的储能型功率调节器及配电系统。The invention relates to a power system, in particular to an energy storage type power conditioner for a power distribution system and the power distribution system.

背景技术Background technique

目前，我国的配电交流系统一般都采用三相对称的供电运行方式。然而，实际所供带的负荷则含有大量的单相负荷，且存在三单相负荷分配不合理的现象，从而致使配电系统出现三相负荷不对称运行的状况，由此也会产生一系列的不良影响，例如：降低了三相变压器的利用率，增加了变压器和电力线路的功率损耗，造成了三相电压不平衡影响到设备的正常运行。此外，为提高供电可靠性，一般的重要用户都采用了双电源供电方式。其中，主备电源在切换过程中，为避免冲击电流，一般均设定了一定的延时时间，这将对用户的供电可靠性造成不利的影响。At present, my country's power distribution AC system generally adopts a three-phase symmetrical power supply operation mode. However, the actual load supplied contains a large number of single-phase loads, and there is an unreasonable distribution of three-phase loads, which leads to the asymmetrical operation of the three-phase loads in the power distribution system, which will also cause a series of problems. For example, the utilization rate of the three-phase transformer is reduced, the power loss of the transformer and the power line is increased, and the unbalance of the three-phase voltage is caused, which affects the normal operation of the equipment. In addition, in order to improve the reliability of power supply, the general important users have adopted the dual power supply mode. Among them, in the switching process of the main and standby power supplies, in order to avoid the inrush current, a certain delay time is generally set, which will have an adverse effect on the reliability of the user's power supply.

发明内容Contents of the invention

本发明要解决的技术问题：针对现有技术的上述问题，提供一种用于配电系统的储能型功率调节器及配电系统，不仅可以平衡配电变压器三相电流，而且还能实现主备电源在切换过程中保持对用户的不间断供电。The technical problem to be solved by the present invention: Aiming at the above-mentioned problems of the prior art, an energy storage type power conditioner and a power distribution system for a power distribution system are provided, which can not only balance the three-phase current of a distribution transformer, but also realize The main and standby power supplies maintain uninterrupted power supply to users during the switching process.

为了解决上述技术问题，本发明采用的技术方案为：In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

一方面，作为具有两条以上储能型链式功率调节支路的通用实例，本发明提供一种用于配电系统的储能型功率调节器，包括第一双绕组自耦变压器、第二双绕组自耦变压器以及储能型链式功率调节单元，所述储能型链式功率调节单元连接于第一双绕组自耦变压器、第二双绕组自耦变压器之间，所述储能型链式功率调节单元由两条以上的储能型链式功率调节支路首尾相连呈链状结构，所述储能型链式功率调节支路由依次串联的第一单相全桥AC-DC变换器、第一双向DC-DC变换器，储能装置、第二双向DC-DC变换器、第二单相全桥DC-AC变换器构成，且位于链首的第一单相全桥AC-DC变换器、位于链尾的第一单相全桥AC-DC变换器的出线端子和第一双绕组自耦变压器的低压绕组对应的出线端子相连，位于链首的第二单相全桥DC-AC变换器、位于链尾的第二单相全桥DC-AC变换器的出线端子和第二双绕组自耦变压器的低压绕组对应的出线端子相连，第一双绕组自耦变压器、第二双绕组自耦变压器的高压绕组均为一个出线端子分别作为储能型功率调节器的输出端、另一个出线端子接地。On the one hand, as a general example with more than two energy storage type chain-type power regulation branches, the present invention provides an energy storage type power conditioner for power distribution system, including a first double-winding autotransformer, a second A double-winding autotransformer and an energy storage type chain-type power adjustment unit, the energy storage type chain-type power adjustment unit is connected between the first double-winding autotransformer and the second double-winding autotransformer, the energy storage type The chain power regulation unit is composed of two or more energy storage type chain power regulation branches connected end to end to form a chain structure, and the energy storage type chain power regulation branches are converted by the first single-phase full bridge AC-DC in series in sequence Converter, first bidirectional DC-DC converter, energy storage device, second bidirectional DC-DC converter, second single-phase full-bridge DC-AC converter, and the first single-phase full-bridge AC- The DC converter, the outlet terminal of the first single-phase full-bridge AC-DC converter at the end of the chain is connected to the corresponding outlet terminal of the low-voltage winding of the first double-winding autotransformer, and the second single-phase full-bridge DC at the head of the chain - The outlet terminal of the AC converter, the second single-phase full-bridge DC-AC converter at the end of the chain is connected to the corresponding outlet terminal of the low-voltage winding of the second double-winding autotransformer, the first double-winding autotransformer, the second The high-voltage windings of the double-winding autotransformer have one outgoing terminal as the output terminal of the energy storage type power regulator, and the other outgoing terminal is grounded.

优选地，所述位于链首的第一单相全桥AC-DC变换器的出线端子和第一双绕组自耦变压器的低压绕组对应的出线端子之间串联有第一单相滤波电感。Preferably, a first single-phase filter inductor is connected in series between the outgoing terminal of the first single-phase full-bridge AC-DC converter at the head of the chain and the corresponding outgoing terminal of the low-voltage winding of the first double-winding autotransformer.

优选地，所述位于链首的第二单相全桥DC-AC变换器的出线端子和第二双绕组自耦变压器的低压绕组对应的出线端子之间串联有第二单相滤波电感。Preferably, a second single-phase filter inductor is connected in series between the outgoing terminal of the second single-phase full-bridge DC-AC converter at the head of the chain and the corresponding outgoing terminal of the low-voltage winding of the second double-winding autotransformer.

优选地，所述储能装置为超级电容器、锂电池或者蓄电池。Preferably, the energy storage device is a supercapacitor, a lithium battery or a storage battery.

优选地，所述第一单相全桥AC-DC变换器、第一双向DC-DC变换器、第二双向DC-DC变换器、第二单相全桥DC-AC变换器均为基于全控开关器件的功率变换器。Preferably, the first single-phase full-bridge AC-DC converter, the first bidirectional DC-DC converter, the second bidirectional DC-DC converter, and the second single-phase full-bridge DC-AC converter are based on the full Power converters with controlled switching devices.

优选地，所述全控开关器件为绝缘栅双极型功率管IGBT、电子注入增强栅晶体管IEGT、集成门极换流晶闸管IGCT、可关断晶闸管GTO中的一种。Preferably, the fully-controlled switching device is one of an insulated gate bipolar power transistor IGBT, an electron injection enhanced gate transistor IEGT, an integrated gate commutated thyristor IGCT, and a turn-off thyristor GTO.

另一方面，作为具有单条储能型链式功率调节支路的特例，本发明还提供一种用于配电系统的储能型功率调节器，包括第一双绕组自耦变压器、第二双绕组自耦变压器以及储能型链式功率调节单元，所述储能型链式功率调节单元连接于第一双绕组自耦变压器、第二双绕组自耦变压器之间，所述储能型链式功率调节单元由一条储能型链式功率调节支路构成，所述储能型链式功率调节支路由依次串联的第一单相全桥AC-DC变换器、第一双向DC-DC变换器，储能装置、第二双向DC-DC变换器、第二单相全桥DC-AC变换器构成，且所述第一单相全桥AC-DC变换器的出线端子和第一双绕组自耦变压器的低压绕组对应的出线端子相连，所述第二单相全桥DC-AC变换器的出线端子和第二双绕组自耦变压器的低压绕组对应的出线端子相连，第一双绕组自耦变压器、第二双绕组自耦变压器的高压绕组均为一个出线端子分别作为储能型功率调节器的输出端、另一个出线端子接地。On the other hand, as a special case with a single energy storage type chain power regulation branch, the present invention also provides an energy storage type power conditioner for power distribution system, which includes a first double-winding autotransformer, a second double-winding A winding autotransformer and an energy storage type chain power adjustment unit, the energy storage type chain power adjustment unit is connected between the first double winding autotransformer and the second double winding autotransformer, the energy storage type chain The power adjustment unit is composed of an energy storage type chain power adjustment branch, and the energy storage type chain power adjustment branch is composed of the first single-phase full-bridge AC-DC converter and the first bidirectional DC-DC converter connected in series. device, an energy storage device, a second bidirectional DC-DC converter, and a second single-phase full-bridge DC-AC converter, and the outlet terminals of the first single-phase full-bridge AC-DC converter and the first double winding The outlet terminals corresponding to the low-voltage winding of the autotransformer are connected, the outlet terminals of the second single-phase full-bridge DC-AC converter are connected to the outlet terminals corresponding to the low-voltage winding of the second double-winding autotransformer, and the first double-winding is connected to the corresponding outlet terminals of the low-voltage winding of the autotransformer. Both the coupling transformer and the high-voltage winding of the second double-winding autotransformer have one outlet terminal as the output terminal of the energy storage type power regulator, and the other outlet terminal is grounded.

优选地，所述第一单相全桥AC-DC变换器的出线端子和第一双绕组自耦变压器的低压绕组对应的出线端子之间串联有第一单相滤波电感。Preferably, a first single-phase filter inductor is connected in series between the outgoing terminal of the first single-phase full-bridge AC-DC converter and the corresponding outgoing terminal of the low-voltage winding of the first double-winding autotransformer.

优选地，所述第二单相全桥DC-AC变换器的出线端子和第二双绕组自耦变压器的低压绕组对应的出线端子之间串联有第二单相滤波电感。Preferably, a second single-phase filter inductor is connected in series between the outgoing terminal of the second single-phase full-bridge DC-AC converter and the corresponding outgoing terminal of the low-voltage winding of the second double-winding autotransformer.

另一方面，本发明还提供一种配电系统，包括配电变压器和负载，所述配电变压器低压侧的三相线路与负载相连，所述配电变压器低压侧的三相线路的A相、B相之间以及B相、C相之间均连接有前述用于配电系统的储能型功率调节器。On the other hand, the present invention also provides a power distribution system, including a distribution transformer and a load, the three-phase line on the low-voltage side of the distribution transformer is connected to the load, and the A-phase of the three-phase line on the low-voltage side of the distribution transformer The energy storage type power conditioner used in the power distribution system is connected between phases 1 and B and between phases B and C.

本发明用于配电系统的储能型功率调节器具有下述优点：The energy storage type power conditioner used in the power distribution system of the present invention has the following advantages:

1、本发明包括第一双绕组自耦变压器、第二双绕组自耦变压器以及储能型链式功率调节单元，储能型链式功率调节单元由两条以上的储能型链式功率调节支路首尾相连呈链状结构，储能型链式功率调节支路由依次串联的第一单相全桥AC-DC变换器、第一双向DC-DC变换器，储能装置、第二双向DC-DC变换器、第二单相全桥DC-AC变换器构成，通过调节第一单相全桥AC-DC变换器、第二单相全桥DC-AC变换器的工作状态，能够快速动态地补偿各储能型功率调节器两个输出端单相负荷的无功功率，从而提高配电网的功率因数。1. The present invention includes a first double-winding autotransformer, a second double-winding autotransformer, and an energy storage type chain power adjustment unit. The energy storage type chain power adjustment unit is composed of more than two energy storage type chain power adjustment units. The branches are connected end to end to form a chain structure. The energy storage type chain power regulation branch consists of the first single-phase full-bridge AC-DC converter, the first bidirectional DC-DC converter, the energy storage device, and the second bidirectional DC converter connected in series. -Consisting of a DC converter and a second single-phase full-bridge DC-AC converter, by adjusting the working states of the first single-phase full-bridge AC-DC converter and the second single-phase full-bridge DC-AC converter, it can quickly and dynamically The reactive power of the single-phase load at the two output ends of each energy storage type power conditioner can be compensated accurately, so as to improve the power factor of the distribution network.

2、本发明的储能型链式功率调节支路由依次串联的第一单相全桥AC-DC变换器、第一双向DC-DC变换器，储能装置、第二双向DC-DC变换器、第二单相全桥DC-AC变换器构成，通过调节第一单相全桥AC-DC变换器、第二单相全桥DC-AC变换器的工作状态，并结合储能装置，能够实现在配电系统主备电源切换时，为重要电力用户提供快速连续的不间断电能支撑。2. The energy storage type chain power regulation branch of the present invention is composed of the first single-phase full-bridge AC-DC converter, the first bidirectional DC-DC converter, the energy storage device, and the second bidirectional DC-DC converter connected in series. , The second single-phase full-bridge DC-AC converter is formed, by adjusting the working state of the first single-phase full-bridge AC-DC converter and the second single-phase full-bridge DC-AC converter, and combining the energy storage device, it can Realize the rapid and continuous uninterrupted power support for important power users when the main and standby power sources of the power distribution system are switched.

3、本发明的储能型链式功率调节支路由依次串联的第一单相全桥AC-DC变换器、第一双向DC-DC变换器，储能装置、第二双向DC-DC变换器、第二单相全桥DC-AC变换器构成，通过控制第一双向DC-DC变换器、第二双向DC-DC变换器的工作状态，能够控制储能装置的有功功率输出，从而保证直流母线电压的稳定以及整个储能型链式功率调节器的正常运行。3. The energy storage type chain power regulation branch of the present invention is composed of the first single-phase full-bridge AC-DC converter, the first bidirectional DC-DC converter, the energy storage device, and the second bidirectional DC-DC converter connected in series. 1. The second single-phase full-bridge DC-AC converter is formed. By controlling the working status of the first bidirectional DC-DC converter and the second bidirectional DC-DC converter, the active power output of the energy storage device can be controlled, thereby ensuring DC The stability of the bus voltage and the normal operation of the entire energy storage type chain power regulator.

本发明的配电系统具有下述优点：本发明的配电系统包括配电变压器和负载，所述配电变压器低压侧的三相线路与负载相连，所述配电变压器低压侧的三相线路的A相、B相之间以及B相、C相之间均连接有本发明用于配电系统的储能型功率调节器，同样也具有本发明用于配电系统的储能型功率调节器的前述优点，且能够实现在三相负荷不对称时，快速动态地平衡配电变压器出口的三相电流，从而提高电网的三相电压平衡度。The power distribution system of the present invention has the following advantages: the power distribution system of the present invention includes a distribution transformer and a load, the three-phase line on the low-voltage side of the distribution transformer is connected to the load, and the three-phase line on the low-voltage side of the distribution transformer The energy storage type power conditioner used in the power distribution system of the present invention is connected between the A phase and the B phase and between the B phase and the C phase, and also has the energy storage type power conditioner used in the power distribution system of the present invention The above-mentioned advantages of the transformer, and can quickly and dynamically balance the three-phase current at the outlet of the distribution transformer when the three-phase load is asymmetrical, thereby improving the three-phase voltage balance of the power grid.

附图说明Description of drawings

图1为本发明实施例一的结构示意图。FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

图2为本发明实施例二的结构示意图。Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

图例说明：1、储能型功率调节器；11、第一双绕组自耦变压器；12、储能型链式功率调节单元；121、第一单相全桥AC-DC变换器；122、第一双向DC-DC变换器；123、储能装置；124、第二双向DC-DC变换器；125、第二单相全桥DC-AC变换器；126、第一单相滤波电感；127、第二单相滤波电感；13、第二双绕组自耦变压器；2、配电变压器；3、负载。Legend: 1. Energy storage type power conditioner; 11. The first double-winding autotransformer; 12. Energy storage type chain power adjustment unit; 121. The first single-phase full-bridge AC-DC converter; 122. The first A bidirectional DC-DC converter; 123, an energy storage device; 124, a second bidirectional DC-DC converter; 125, a second single-phase full-bridge DC-AC converter; 126, a first single-phase filter inductor; 127, The second single-phase filter inductor; 13. The second double-winding autotransformer; 2. Distribution transformer; 3. Load.

具体实施方式detailed description

实施例一：Embodiment one:

参见图1，本实施例用于配电系统的储能型功率调节器包括第一双绕组自耦变压器11、第二双绕组自耦变压器13以及储能型链式功率调节单元12，储能型链式功率调节单元12连接于第一双绕组自耦变压器11、第二双绕组自耦变压器13之间，储能型链式功率调节单元12由两条以上的储能型链式功率调节支路首尾相连呈链状结构。Referring to Fig. 1, the energy storage type power conditioner used in the power distribution system in this embodiment includes a first double-winding autotransformer 11, a second double-winding autotransformer 13 and an energy storage type chain power adjustment unit 12, the energy storage The type chain power adjustment unit 12 is connected between the first double-winding autotransformer 11 and the second double-winding autotransformer 13, and the energy storage type chain power adjustment unit 12 is composed of two or more energy storage type chain power adjustment units. Branches are connected end to end to form a chain structure.

参见图1，储能型链式功率调节支路由依次串联的第一单相全桥AC-DC变换器121、第一双向DC-DC变换器122，储能装置123、第二双向DC-DC变换器124、第二单相全桥DC-AC变换器125构成，且位于链首的第一单相全桥AC-DC变换器121、位于链尾的第一单相全桥AC-DC变换器121的出线端子（e和f）和第一双绕组自耦变压器11的低压绕组对应的出线端子（c和d）相连，位于链首的第二单相全桥DC-AC变换器125、位于链尾的第二单相全桥DC-AC变换器125的出线端子（q和r）和第二双绕组自耦变压器13的低压绕组对应的出线端子（s和t）相连，第一双绕组自耦变压器11、第二双绕组自耦变压器13的高压绕组均为一个出线端子分别作为储能型功率调节器的输出端（a和u）、另一个出线端子接地（b和v）。Referring to Fig. 1, the energy storage type chain power regulation branch consists of a first single-phase full-bridge AC-DC converter 121, a first bidirectional DC-DC converter 122, an energy storage device 123, and a second bidirectional DC-DC converter connected in series. converter 124 and a second single-phase full-bridge DC-AC converter 125, and the first single-phase full-bridge AC-DC converter 121 at the head of the chain and the first single-phase full-bridge AC-DC converter at the end of the chain The outlet terminals ( e and f ) of the transformer 121 are connected to the corresponding outlet terminals ( c and d ) of the low-voltage winding of the first double-winding autotransformer 11, and the second single-phase full-bridge DC-AC converter 125 located at the head of the chain, The outlet terminals ( q and r ) of the second single-phase full-bridge DC-AC converter 125 at the end of the chain are connected to the corresponding outlet terminals ( s and t ) of the low-voltage winding of the second double-winding autotransformer 13, and the first dual-winding The high-voltage windings of the winding autotransformer 11 and the second double-winding autotransformer 13 have one outgoing terminal as the output terminal ( a and u ) of the energy storage type power regulator, and the other outgoing terminal is grounded ( b and v ).

本实施例用于配电系统的储能型功率调节器能够起到提高变压器利用率，动态补偿负载无功功率，提高配网功率因数，快速补偿负载有功功率，提高负载供电可靠性等作用。The energy storage power regulator used in the power distribution system in this embodiment can improve the utilization rate of the transformer, dynamically compensate the reactive power of the load, improve the power factor of the distribution network, quickly compensate the active power of the load, and improve the reliability of the load power supply.

需要说明的是，本实施例中以N（N≥3）条以上的储能型链式功率调节支路进行示例性说明，毫无疑问，储能型链式功率调节支路的数量也可以根据需要采用一个或两个，其原理与本实施例相同，因此其数量N可以延伸为N≥1。It should be noted that, in this embodiment, more than N (N≥3) energy storage type chain power regulation branches are used for illustration. Undoubtedly, the number of energy storage type chain power regulation branches can also be One or two are used as required, and the principle is the same as in this embodiment, so the number N can be extended to N≧1.

参见图1，本实施例中第一单相全桥AC-DC变换器121的直流端口g1～gN分别与对应的第一双向DC-DC变换器122高压绕组h1～hN相连，第一双向DC-DC变换器122的低压绕组i1～iN分别与储能装置123的一个端口j1～jN相连，储能装置123的另一个端口k1～kN分别与第二双向DC-DC变换器124的低压绕组l1～lN相连，第二双向DC-DC变换器124的高压绕组o1～oN分别与对应的第二单相全桥DC-AC变换器125的直流端口p1～pN相连。Referring to FIG. 1, in this embodiment, the DC ports g1-gN of the first single-phase full-bridge AC-DC converter 121 are respectively connected to the corresponding high-voltage windings h1-hN of the first bidirectional DC-DC converter 122, and the first bidirectional DC - the low-voltage windings i1-iN of the DC converter 122 are respectively connected to one port j1-jN of the energy storage device 123, and the other ports k1-kN of the energy storage device 123 are respectively connected to the low-voltage windings of the second bidirectional DC-DC converter 124 l1˜lN are connected, and the high voltage windings o1˜oN of the second bidirectional DC-DC converter 124 are respectively connected with the corresponding DC ports p1˜pN of the second single-phase full-bridge DC-AC converter 125 .

参见图1，以第一条储能型链式功率调节支路为例：第一单相全桥AC-DC变换器121交流侧的一个出线端子e和第一双绕组自耦变压器11的低压绕组对应的出线端子c相连、另一个出线端子则与第二条储能型链式功率调节支路的第一单相全桥AC-DC变换器121交流侧的一个出线端子串联，最终由第N条储能型链式功率调节支路的第一单相全桥AC-DC变换器121交流侧的出线端子f串联第一双绕组自耦变压器11的低压绕组对应的出线端子d；第一单相全桥AC-DC变换器121的直流侧端口g1和第一双向DC-DC变换器122的高压绕组h1相连，第一双向DC-DC变换器122的低压绕组i1与储能装置123的一个端口j1相连，储能装置123的另一个端口k1与第二双向DC-DC变换器124的低压绕组l1相连，第二双向DC-DC变换器124的高压绕组o1与第二单相全桥DC-AC变换器125的直流端口p1相连，第二单相全桥DC-AC变换器125的交流侧的一个出线端子q和第二双绕组自耦变压器13的低压绕组对应的出线端子s相连、另一个出线端子则和第二条储能型链式功率调节支路的第二单相全桥DC-AC变换器125交流侧的一个出线端子串联，最终由第N条储能型链式功率调节支路的第二单相全桥DC-AC变换器125交流侧的出线端子r连接第二双绕组自耦变压器13的低压绕组对应的出线端子t。Referring to Fig. 1, taking the first energy storage type chain-type power regulation branch as an example: an outlet terminal e on the AC side of the first single-phase full-bridge AC-DC converter 121 and a low-voltage terminal e of the first double-winding autotransformer 11 The outlet terminal c corresponding to the winding is connected, and the other outlet terminal is connected in series with an outlet terminal on the AC side of the first single-phase full-bridge AC-DC converter 121 of the second energy storage type chain power regulation branch circuit. The outgoing line terminal f of the first single-phase full-bridge AC-DC converter 121 AC side of the N energy storage type chain-type power regulation branches is connected in series with the corresponding outgoing line terminal d of the low-voltage winding of the first double-winding autotransformer 11; the first The DC side port g1 of the single-phase full-bridge AC-DC converter 121 is connected to the high-voltage winding h1 of the first bidirectional DC-DC converter 122, and the low-voltage winding i1 of the first bidirectional DC-DC converter 122 is connected to the energy storage device 123 The other port k1 of the energy storage device 123 is connected to the low-voltage winding l1 of the second bidirectional DC-DC converter 124, and the high-voltage winding o1 of the second bidirectional DC-DC converter 124 is connected to the second single-phase full The DC port p1 of the bridge DC-AC converter 125 is connected, and an outlet terminal q on the AC side of the second single-phase full-bridge DC-AC converter 125 is connected to an outlet terminal s corresponding to the low-voltage winding of the second double-winding autotransformer 13 The other outlet terminal is connected in series with an outlet terminal on the AC side of the second single-phase full-bridge DC-AC converter 125 of the second energy storage type chain power regulation branch circuit, and finally the Nth energy storage type chain The outlet terminal r on the AC side of the second single-phase full-bridge DC-AC converter 125 of the formula power regulation branch is connected to the outlet terminal t corresponding to the low-voltage winding of the second double-winding autotransformer 13 .

参见图1，位于链首的第一单相全桥AC-DC变换器121的出线端子e和第一双绕组自耦变压器11的低压绕组对应的出线端子c之间串联有第一单相滤波电感126。Referring to FIG. 1 , a first single-phase filter is connected in series between the outgoing terminal e of the first single-phase full-bridge AC-DC converter 121 at the head of the chain and the corresponding outgoing terminal c of the low-voltage winding of the first double-winding autotransformer 11. Inductance 126.

参见图1，位于链首的第二单相全桥DC-AC变换器125的出线端子q和第二双绕组自耦变压器13的低压绕组对应的出线端子s之间串联有第二单相滤波电感127。Referring to FIG. 1 , there is a second single-phase filter connected in series between the outgoing terminal q of the second single-phase full-bridge DC-AC converter 125 at the head of the chain and the corresponding outgoing terminal s of the low-voltage winding of the second double-winding autotransformer 13. Inductance 127.

本实施例中，储能装置123为超级电容器、锂电池或者蓄电池。In this embodiment, the energy storage device 123 is a supercapacitor, a lithium battery or a storage battery.

本实施例中，第一单相全桥AC-DC变换器121、第一双向DC-DC变换器122、第二双向DC-DC变换器124、第二单相全桥DC-AC变换器125均为基于全控开关器件的功率变换器。In this embodiment, the first single-phase full-bridge AC-DC converter 121, the first bidirectional DC-DC converter 122, the second bidirectional DC-DC converter 124, and the second single-phase full-bridge DC-AC converter 125 Both are power converters based on fully controlled switching devices.

本实施例中，全控开关器件为绝缘栅双极型功率管IGBT、电子注入增强栅晶体管IEGT、集成门极换流晶闸管IGCT、可关断晶闸管GTO中的一种。In this embodiment, the fully-controlled switching device is one of an insulated gate bipolar power transistor IGBT, an electron injection enhanced gate transistor IEGT, an integrated gate commutated thyristor IGCT, and a turn-off thyristor GTO.

本实施例用于配电系统的储能型功率调节器能够起到平衡配电变压器三相电流，提高变压器利用率，动态补偿负载无功功率，提高配网功率因数，快速补偿负载有功功率，提高负载供电可靠性等作用The energy storage power regulator used in the power distribution system in this embodiment can balance the three-phase current of the distribution transformer, improve the utilization rate of the transformer, dynamically compensate the reactive power of the load, improve the power factor of the distribution network, and quickly compensate the active power of the load. Improve the reliability of load power supply, etc.

如图1所示，本实施例的配电系统包括配电变压器2和负载3，配电变压器2低压侧的三相线路与负载3相连，配电变压器2低压侧的三相线路的A相、B相之间以及B相、C相之间均连接有本实施例用于配电系统的储能型功率调节器1。通过控制A相侧的第一单相全桥AC-DC变换器121的工作状态、B相侧的第二单相全桥AC-DC变换器125的工作状态、B相侧的第一单相全桥AC-DC变换器121的工作状态、C相侧的第二单相全桥AC-DC变换器125的工作状态，能够实现在三相负荷不对称时，快速动态地平衡配电变压器出口的三相电流，从而提高电网的三相电压平衡度，能够起到提高变压器利用率，动态补偿负载无功功率，提高配网功率因数，快速补偿负载有功功率，提高负载供电可靠性等作用。As shown in Figure 1, the power distribution system of this embodiment includes a distribution transformer 2 and a load 3, the three-phase line on the low-voltage side of the distribution transformer 2 is connected to the load 3, and the A phase of the three-phase line on the low-voltage side of the distribution transformer 2 The energy storage type power conditioner 1 used in the power distribution system of this embodiment is connected between phase B and phase B and between phase B and phase C. By controlling the working state of the first single-phase full-bridge AC-DC converter 121 on the A-phase side, the working state of the second single-phase full-bridge AC-DC converter 125 on the B-phase side, and the first single-phase The working state of the full-bridge AC-DC converter 121 and the working state of the second single-phase full-bridge AC-DC converter 125 on the C-phase side can quickly and dynamically balance the outlet of the distribution transformer when the three-phase load is asymmetrical The three-phase current can improve the three-phase voltage balance of the power grid, which can improve the transformer utilization rate, dynamically compensate the reactive power of the load, improve the power factor of the distribution network, quickly compensate the active power of the load, and improve the reliability of the load power supply.

参见图1，本实施例中A相、B相之间连接有储能型功率调节器1#1，B相、C相之间连接有储能型功率调节器1#2，储能型功率调节器1#1和储能型功率调节器1#2结构完全相同，故由于篇幅限制，图1中已省略储能型功率调节器1#2的结构。Referring to Fig. 1, in this embodiment, an energy storage type power conditioner 1#1 is connected between phase A and phase B, and an energy storage type power conditioner 1#2 is connected between phase B and phase C. Regulator 1#1 has the same structure as energy storage power regulator 1#2, so due to space limitation, the structure of energy storage power regulator 1#2 has been omitted in Figure 1.

实施例二：Embodiment two:

本实施例与实施例一基本相同，其主要不同点为储能型链式功率调节支路的数量不同。This embodiment is basically the same as Embodiment 1, and the main difference is that the number of energy storage type chain power regulation branches is different.

如图2所示，本实施例用于配电系统的储能型功率调节器，包括第一双绕组自耦变压器11、第二双绕组自耦变压器13以及储能型链式功率调节单元12，储能型链式功率调节单元12连接于第一双绕组自耦变压器11、第二双绕组自耦变压器13之间，储能型链式功率调节单元12由一条储能型链式功率调节支路构成，储能型链式功率调节支路由依次串联的第一单相全桥AC-DC变换器121、第一双向DC-DC变换器122，储能装置123、第二双向DC-DC变换器124、第二单相全桥DC-AC变换器125构成，且第一单相全桥AC-DC变换器121的出线端子和第一双绕组自耦变压器11的低压绕组对应的出线端子相连，第二单相全桥DC-AC变换器125的出线端子和第二双绕组自耦变压器13的低压绕组对应的出线端子相连，第一双绕组自耦变压器11、第二双绕组自耦变压器13的高压绕组均为一个出线端子分别作为储能型功率调节器的输出端、另一个出线端子接地。As shown in Figure 2, the energy storage type power conditioner used in the power distribution system in this embodiment includes a first double-winding autotransformer 11, a second double-winding autotransformer 13 and an energy storage type chain power adjustment unit 12 , the energy storage type chain power regulation unit 12 is connected between the first double-winding autotransformer 11 and the second double winding autotransformer 13, the energy storage type chain power regulation unit 12 is composed of an energy storage type chain power regulation The branch circuit is composed of the energy storage type chain power regulation branch consisting of the first single-phase full-bridge AC-DC converter 121, the first bidirectional DC-DC converter 122, the energy storage device 123, and the second bidirectional DC-DC converter connected in series. The converter 124 and the second single-phase full-bridge DC-AC converter 125 are composed, and the outlet terminals of the first single-phase full-bridge AC-DC converter 121 and the corresponding outlet terminals of the low-voltage winding of the first double-winding autotransformer 11 connected, the outlet terminal of the second single-phase full-bridge DC-AC converter 125 is connected with the corresponding outlet terminal of the low-voltage winding of the second double-winding autotransformer 13, the first double-winding autotransformer 11, the second double-winding autotransformer 11, the second double-winding autotransformer The high-voltage winding of the transformer 13 has one outgoing terminal as the output terminal of the energy storage type power regulator, and the other outgoing terminal is grounded.

参见图2，第一单相全桥AC-DC变换器121交流侧的一个出线端子e和第一双绕组自耦变压器11的低压绕组对应的出线端子c相连、另一个出线端子f串联第一双绕组自耦变压器11的低压绕组对应的出线端子d；第一单相全桥AC-DC变换器121的直流侧端口g1和第一双向DC-DC变换器122的高压绕组h1相连，第一双向DC-DC变换器122的低压绕组i1与储能装置123的一个端口j1相连，储能装置123的另一个端口k1与第二双向DC-DC变换器124的低压绕组l1相连，第二双向DC-DC变换器124的高压绕组o1与第二单相全桥DC-AC变换器125的直流端口p1相连，第二单相全桥DC-AC变换器125的交流侧的一个出线端子q和第二双绕组自耦变压器13的低压绕组对应的出线端子s相连、另一个出线端子r连接第二双绕组自耦变压器13的低压绕组对应的出线端子t。Referring to FIG. 2 , one outgoing terminal e on the AC side of the first single-phase full-bridge AC-DC converter 121 is connected to the corresponding outgoing terminal c of the low-voltage winding of the first double-winding autotransformer 11, and the other outgoing terminal f is connected in series with the first The outlet terminal d corresponding to the low-voltage winding of the double-winding autotransformer 11; the DC side port g1 of the first single-phase full-bridge AC-DC converter 121 is connected to the high-voltage winding h1 of the first bidirectional DC-DC converter 122, and the first The low-voltage winding i1 of a bidirectional DC-DC converter 122 is connected to a port j1 of the energy storage device 123, and the other port k1 of the energy storage device 123 is connected to the low-voltage winding l1 of the second bidirectional DC-DC converter 124, and the second The high-voltage winding o1 of the bidirectional DC-DC converter 124 is connected to the DC port p1 of the second single-phase full-bridge DC-AC converter 125, and an outlet terminal q of the AC side of the second single-phase full-bridge DC-AC converter 125 It is connected to the outgoing terminal s corresponding to the low-voltage winding of the second double-winding autotransformer 13 , and the other outgoing terminal r is connected to the outgoing terminal t corresponding to the low-voltage winding of the second double-winding autotransformer 13 .

本实施例中，第一单相全桥AC-DC变换器121的出线端子和第一双绕组自耦变压器11的低压绕组对应的出线端子之间串联有第一单相滤波电感126。In this embodiment, a first single-phase filter inductor 126 is connected in series between the outgoing terminal of the first single-phase full-bridge AC-DC converter 121 and the corresponding outgoing terminal of the low-voltage winding of the first double-winding autotransformer 11 .

本实施例中，第二单相全桥DC-AC变换器125的出线端子和第二双绕组自耦变压器13的低压绕组对应的出线端子之间串联有第二单相滤波电感127。In this embodiment, a second single-phase filter inductor 127 is connected in series between the outgoing terminal of the second single-phase full-bridge DC-AC converter 125 and the corresponding outgoing terminal of the low-voltage winding of the second double-winding autotransformer 13 .

以上所述仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above descriptions are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (10)

1. a kind of accumulation energy type power governor for distribution system, it is characterised in that：Including the first double winding auto-transformer （11）, the second double winding auto-transformer（13）And accumulation energy type chain type power adjustment unit（12）, the accumulation energy type chain type work( Rate adjustment unit（12）It is connected to the first double winding auto-transformer（11）, the second double winding auto-transformer（13）Between, institute State accumulation energy type chain type power adjustment unit（12）Joined end to end by the accumulation energy type chain type power adjusting branch road of more than two in chain Structure, the first single-phase full bridge AC-DC converter that the accumulation energy type chain type power adjusting branch route is sequentially connected in series（121）, first Bidirectional DC-DC converter（122）, energy storage device（123）, the second bidirectional DC-DC converter（124）, the second single-phase full bridge DC-AC Converter（125）Constitute, and positioned at the first single-phase full bridge AC-DC converter of first-in-chain(FIC)（121）, positioned at the first single-phase complete of last-of-chain Bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）The corresponding leading-out terminal of low pressure winding Son is connected, positioned at the second single-phase full bridge DC-AC converters of first-in-chain(FIC)（125）, positioned at last-of-chain the second single-phase full bridge DC-AC convert Device（125）Outlet terminal and the second double winding auto-transformer（13）The corresponding outlet terminal of low pressure winding be connected, first Double winding auto-transformer（11）, the second double winding auto-transformer（13）High pressure winding be that an outlet terminal is made respectively It is grounded for the output end of accumulation energy type power governor, another outlet terminal.
2. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：It is described to be located at chain The first first single-phase full bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）Low pressure around The first single-phase filter inductance is in series between the corresponding outlet terminal of group（126）.
3. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：It is described to be located at chain The second first single-phase full bridge DC-AC converters（125）Outlet terminal and the second double winding auto-transformer（13）Low pressure around The second single-phase filter inductance is in series between the corresponding outlet terminal of group（127）.
4. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：The energy storage dress Put（123）For ultracapacitor, lithium battery or battery.
5. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：Described first is single Phase full-bridge AC-DC converter（121）, the first bidirectional DC-DC converter（122）, the second bidirectional DC-DC converter（124）, second Single-phase full bridge DC-AC converters（125）It is the power inverter based on full control switching device.
6. the accumulation energy type power governor according to claim 5 for distribution system, it is characterised in that：The full control is opened Pass device is insulated gate bipolar translator power tube IGBT, electron injection enhancement gate transistor IEGT, integrated gate commutated thyristor One kind in IGCT, turn-off thyristor GTO.
7. a kind of accumulation energy type power governor for distribution system, it is characterised in that：Including the first double winding auto-transformer （11）, the second double winding auto-transformer（13）And accumulation energy type chain type power adjustment unit（12）, the accumulation energy type chain type work( Rate adjustment unit（12）It is connected to the first double winding auto-transformer（11）, the second double winding auto-transformer（13）Between, institute State accumulation energy type chain type power adjustment unit（12）It is made up of an accumulation energy type chain type power adjusting branch road, the accumulation energy type chain type work( The first single-phase full bridge AC-DC converter that rate regulation branch route is sequentially connected in series（121）, the first bidirectional DC-DC converter（122）, Energy storage device（123）, the second bidirectional DC-DC converter（124）, the second single-phase full bridge DC-AC converters（125）Constitute, and institute State the first single-phase full bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）Low pressure winding Corresponding outlet terminal is connected, the second single-phase full bridge DC-AC converters（125）Outlet terminal and the second double winding self coupling Transformer（13）The corresponding outlet terminal of low pressure winding be connected, the first double winding auto-transformer（11）, the second double winding from Coupling transformer（13）High pressure winding be an outlet terminal respectively as accumulation energy type power governor output end, another Outlet terminal is grounded.
8. the accumulation energy type power governor according to claim 7 for distribution system, it is characterised in that：Described first is single Phase full-bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）Low pressure winding it is corresponding go out The first single-phase filter inductance is in series between line terminals（126）.
9. the accumulation energy type power governor according to claim 7 for distribution system, it is characterised in that：Described second is single Phase full-bridge DC-AC converters（125）Outlet terminal and the second double winding auto-transformer（13）Low pressure winding it is corresponding go out The second single-phase filter inductance is in series between line terminals（127）.
10. a kind of distribution system, including distribution transformer（2）And load（3）, the distribution transformer（2）The three-phase of low-pressure side Circuit and load（3）It is connected, it is characterised in that：The distribution transformer（2）Between the A phases of the three-phase line of low-pressure side, B phases with And the accumulation energy type power adjusting for distribution system any one described in is respectively connected with claim 1~9 between B phases, C phases Device（1）.
CN201710437720.8A 2017-06-12 2017-06-12 A kind of accumulation energy type power governor and distribution system for distribution system Pending CN107248750A (en)

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Application publication date: 20171013