JP5390270B2 - How to update a DC power supply without a power failure - Google Patents
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- JP5390270B2 JP5390270B2 JP2009142772A JP2009142772A JP5390270B2 JP 5390270 B2 JP5390270 B2 JP 5390270B2 JP 2009142772 A JP2009142772 A JP 2009142772A JP 2009142772 A JP2009142772 A JP 2009142772A JP 5390270 B2 JP5390270 B2 JP 5390270B2
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Description
この発明は、狭い現場環境での老朽化した直流電源装置（整流器）を新しい電源装置に更改（更新）する工事において無停電で行う方法に関するものである。 The present invention relates to a method of performing uninterruptible power in a construction for renewing (updating) an aging DC power supply (rectifier) to a new power supply in a narrow field environment.
通信機器は主に直流電源により駆動される。これらの直流電源を供給する整流器と呼ばれる（レクチャー、AC/DCコンバータ、充電器とも呼ばれる）電源装置を、通信事業者の小型通信局舎のスペースの限られた場所に設置している場合がある。また、このように通信電源として使用される場合は、バックアップ用の蓄電池を充電しながら直流負荷に電源を供給しており、停電時にこの蓄電池から直流負荷に供給する構成となっている。 Communication equipment is mainly driven by a DC power source. There is a case where a power supply device called a rectifier (also called a lecture, AC / DC converter, or charger) that supplies these DC power supplies is installed in a limited space in a small communication station building of a telecommunications carrier. . Further, when used as a communication power source in this way, power is supplied to a DC load while charging a backup storage battery, and the storage battery is supplied from this storage battery to the DC load during a power failure.
この電源装置Ａは、具体的には図１２に示すように、（既設）整流器１１と（既設）蓄電池１４から構成され、交流分電盤１０の出力端子から交流電源を（既設）整流器１１の整流回路１１ａに入力し、当該整流回路１１ａで直流に変換し、ＳＩＤ１１ｂを通して電圧を調整し、直流分電盤１２を通して多数の通信負荷設備１３に直流電源を供給しており、前記整流回路１１ａから常時バックアップ用の蓄電池１４に充電している。そして、交流分電盤１０からの交流電源が停電した場合、前記既設蓄電池１４から、常閉型の開閉器１１ｃ、前記ＳＩＤ１１ｂ、直流分電盤１２を通して直流電源を各通信負荷設備１３に供給している。 Specifically, as shown in FIG. 12, the power supply device A is composed of a (existing) rectifier 11 and a (existing) storage battery 14, and an AC power source is connected to the (existing) rectifier 11 from an output terminal of the AC distribution board 10. Input into the rectifier circuit 11a, converted into direct current by the rectifier circuit 11a, adjusted the voltage through the SID 11b, and supplied direct current power to a number of communication load facilities 13 through the DC distribution board 12, from the rectifier circuit 11a The storage battery 14 for regular backup is charged. When the AC power supply from the AC distribution board 10 fails, DC power is supplied from the existing storage battery 14 to each communication load facility 13 through the normally closed switch 11c, the SID 11b, and the DC distribution board 12. ing.
この電源装置が老朽化してきたり、容量不足となった場合、新しいものに取り替える必要がある。その場合、当該更改工事を無停電で行うためには、仮設の電源装置を既設の電源装置の近くに設置してバイパスをとり、工事の間は当該仮設の電源装置から直流負荷に電源を供給し、新設の電源装置を設置後に、電源を切り替え、仮設の電源装置を撤去しなければならない。 If this power supply becomes old or runs out of capacity, it must be replaced with a new one. In that case, in order to perform the renewal work without a power outage, install a temporary power supply unit near the existing power supply unit to bypass, and supply power to the DC load from the temporary power supply unit during the work. However, after installing a new power supply, the power supply must be switched and the temporary power supply must be removed.
しかしながら、実際に設置されている前記整流器はメーカーから販売されているが、蓄電池の能力値を引き出すための電圧調整機能や平滑回路化機能等、付加機能が数多く搭載されており、大型となっている（負荷直流定格出力150AクラスでW800、D600、H1900程度）。このように種々の電源装置が開発されているが、特許文献１に示すように、すべて多機能型の大型電源装置となる傾向が強い。スペースに余裕のある場所に前記取り替えるべき電源装置が設置されている場合は、既設の電源装置の近くに置いて直接取り替えることができる。 However, although the rectifier actually installed is sold by the manufacturer, it has many additional functions such as a voltage adjustment function and a smoothing circuit function for extracting the capacity value of the storage battery, which makes it large. (Load DC rated output 150A class W800, D600, about H1900). Various power supply devices have been developed as described above. However, as shown in Patent Document 1, there is a strong tendency that all of them become multifunctional large-sized power supply devices. If the power supply to be replaced is installed in a place with sufficient space, it can be directly replaced by placing it near an existing power supply.
しかし、前記通信事業者の狭隘な局舎では仮設電源装置として大型の電源装置を設置できるスペースがない場合が多い。それ故、停電作業により前記老朽化した整流器等の電源装置を新しいものに交換していた。また、この工事は１週間以上かかる。しかしながら、前記小型通信局舎でも直接ユーザへ接続される加入者回線が数百回線、通信局舎のトランジット回線（中継回線）を含めると数千回線が収容されている。これらはユーザのイントラネット、インターネットや携帯電話基地局、TV局、銀行等に接続される公共性の高い回線であり、電源停止は許されない。従って、前記狭隘な通信局舎の電源装置であっても、無停電による電源装置の更改工事が要求されている。 However, there are many cases where there is no space for installing a large-sized power supply device as a temporary power supply device in a narrow office building of the communication carrier. Therefore, the power supply device such as the rectifier that has deteriorated due to the power failure is replaced with a new one. This construction takes more than a week. However, even in the small communication station, several hundred subscriber lines directly connected to the user are accommodated, and when the transit line (relay line) of the communication station is included, several thousand lines are accommodated. These are highly public lines connected to the user's intranet, the Internet, a mobile phone base station, a TV station, a bank, etc., and the power supply cannot be stopped. Therefore, even for the power supply device of the narrow communication station, renewal work of the power supply device due to uninterruptible power is required.
この発明はこのような従来技術を考慮したものであって、電源装置の設置場所が狭隘な場所であっても、無停電で直流電源装置の更改工事を行うことができる方法を提供することを目的としたものである。 The present invention takes such a conventional technique into consideration, and provides a method capable of renewing a DC power supply without interruption even when the installation place of the power supply is narrow. It is intended.
そこで、この発明は、狭隘な局舎での仮設電源装置の設置を可能にするために、仮設電源として必要な機能を従来品からリストラして、最小化を図ると共に、分割設置、用途別に構成を変えられるように機能別に分解した。この最小化と分割化により狭隘な局舎の空きスペースに効率的な仮設電源の配置を可能とした。 Therefore, in order to enable the installation of a temporary power supply device in a narrow office building, the present invention restructures the functions necessary as a temporary power supply from the conventional product, minimizes it, and configures it according to divided installation and usage. It was disassembled according to function so that it could be changed. This minimization and division enabled efficient placement of temporary power sources in narrow office space.
具体的には、請求項１の発明は、交流電源を整流器により直流電源に変換するとともにバックアップ用の蓄電池に常時充電する、既設の直流電源装置を新設の直流電源装置に更改する工事において、仮設交流入力分岐遮断機、仮設整流器、及びバックアップ用の仮設蓄電池から成り、これらは当該更改工事に不要な機能を具備せず、夫々独立して設けられ、かつ夫々着脱自在に電気的に接続された仮設電源装置を設け、当該仮設電源装置の各部材を前記既設の電源装置の近くに設置して、当該仮設電源装置の前記仮設交流入力遮断機に商用交流電源を入力し、これを仮設整流器に通して直流負荷側に直流電源を供給し、かつ前記仮設整流器から仮設蓄電池に充電させるバイパス整流回路を設け、当該バイパス整流回路に前記商用交流電源を通電したのち、既設の直流電源装置を撤去し、新設の直流電源装置を設置し、当該新設の直流電源装置を交流電源及び直流負荷に接続したのち、前記バイパス整流回路の接続を解除し、当該仮設電源装置を撤去する、無停電による直流電源装置の更改工事方法とした。 Specifically, the invention of claim 1 is a temporary installation in a construction in which an existing DC power supply device is converted to a new DC power supply device, in which an AC power supply is converted into a DC power supply by a rectifier and a backup storage battery is always charged. Consists of an AC input branch breaker, a temporary rectifier, and a temporary storage battery for backup, which do not have functions unnecessary for the renewal work, are provided independently, and are electrically connected detachably. A temporary power supply device is provided, each member of the temporary power supply device is installed near the existing power supply device, commercial AC power is input to the temporary AC input circuit breaker of the temporary power supply device, and this is supplied to the temporary rectifier. A bypass rectifier circuit for supplying a DC power source to the DC load side and charging the temporary storage battery from the temporary rectifier is provided, and the commercial AC power source is passed through the bypass rectifier circuit. After that, remove the existing DC power supply, install a new DC power supply, connect the new DC power supply to the AC power supply and DC load, and then disconnect the bypass rectifier circuit. The power supply unit was removed, and the DC power supply unit was renewed by uninterruptible power.
また、請求項２の発明は、請求項１の発明において、仮設電源装置の仮設整流器の後に仮設ＳＩＤを接続し、バイパス整流回路において、仮設整流器で整流した直流電源を、当該仮設整流器又は仮設ＳＩＤで電圧を調整して直流負荷側に直流電源を供給する、無停電による直流電源装置の更改工事方法とした。 According to a second aspect of the present invention, in the first aspect of the present invention, the temporary SID is connected after the temporary rectifier of the temporary power supply device, and the DC power source rectified by the temporary rectifier is connected to the temporary rectifier or the temporary SID in the bypass rectifier circuit. The DC power supply was renewed by uninterruptible power supply by adjusting the voltage and supplying DC power to the DC load.
また、請求項３の発明は、請求項１又は２の発明において、前記仮設蓄電池の選定にあたり、直流負荷側の許容電圧幅、電源ケーブルの電路の電圧降下をパラメータとして蓄電池１セル当たりの放電終止電圧を決定し、これに直流負荷側の必要負荷電流値を考慮して蓄電池容量を決定し、蓄電池タイプ、充電電圧を決定して仮設蓄電池を仮決定し、当該仮設蓄電池が設置スペースに入るものであれば、当該仮設蓄電池を決定するが、当該仮設蓄電池が設置スペースに入らない場合は、前記蓄電池の１セルの容量を大きいものにしてセルの組数を少なくして仮設蓄電池の大きさを前記設置スペースに入るものに選定して仮設蓄電池を決定する、無停電による直流電源装置の更改工事方法とした。 Further, the invention of claim 3 is the invention according to claim 1 or 2, wherein in the selection of the temporary storage battery, the discharge termination per storage battery cell is set by using the allowable voltage width on the DC load side and the voltage drop of the electric circuit of the power cable as parameters. Determine the voltage, determine the storage battery capacity in consideration of the required load current value on the DC load side, determine the storage battery type and charging voltage, temporarily determine the temporary storage battery, and the temporary storage battery enters the installation space If the temporary storage battery is not included in the installation space, the capacity of one cell of the storage battery is increased to reduce the number of cells and reduce the size of the temporary storage battery. A renewal construction method for a DC power supply by uninterruptible power is determined by selecting a temporary storage battery by selecting one that enters the installation space.
また、請求項４の発明は、請求項３の発明において、仮設蓄電池を決定することにより、当該仮設蓄電池の標準特性（１０ＨＲ容量換算）表により、容量換算時間Ｋから当該蓄電池のバックアップ時間を決定し、これが必要バックアップ時間の３倍か否かで、仮設ＳＩＤを使用するかどうかを決め、仮設ＳＩＤを必要とする場合であって、当該仮設ＳＩＤを設置できスペースがある場合は、仮設ＳＩＤを用いることとし、仮設ＳＩＤを必要とする場合であってもスペースがない場合は、蓄電池容量の増量を検討するが、蓄電池容量の増量のスペースがある場合に増量を決定し、再度、蓄電池容量、蓄電池の充電電圧を決定することとし、前記蓄電池の増量のスペースがない場合は、既存の電源装置の既存蓄電池を用い、再度、蓄電池容量、蓄電池の充電電圧を決定する、無停電による直流電源装置の更改工事方法とした。 The invention of claim 4 determines the backup time of the storage battery from the capacity conversion time K according to the standard characteristic (10HR capacity conversion) table of the temporary storage battery by determining the temporary storage battery in the invention of claim 3. If the temporary SID is used depending on whether or not this is three times the required backup time, and if the temporary SID is required and there is a space where the temporary SID can be installed, the temporary SID is If there is no space even if a temporary SID is required, consider increasing the storage battery capacity, but if there is a space for increasing the storage battery capacity, determine the increase, and again, the storage battery capacity, When the storage battery charging voltage is determined and there is no space for increasing the storage battery, the existing storage battery of the existing power supply device is used, and the storage battery capacity, Determining a charging voltage of the pond, and a renewal construction method of the DC power supply device according to an uninterruptible.
また、請求項５の発明は、請求項１、２、３、又は４のいずれかの発明において、仮設整流器の選定にあたり、直流負荷側の必要負荷電流値以上となるように整流ユニット１個の定格電流値及び個数を仮決定し、前記仮設蓄電池の容量において負荷給電時のフル充電が２４時間以内であることを条件とし、かつ当該仮設整流器を設置するスペースに合わせて、前記仮設整流器のユニット１個の定格電流及び個数の組み合わせを決定する、無停電による直流電源装置の更改工事方法とした。 Further, the invention of claim 5 is the invention of any one of claims 1, 2, 3, or 4, wherein when selecting a temporary rectifier, one rectifier unit is provided so that the load current value is equal to or greater than the required load current value on the DC load side. Temporary determination of the rated current value and the number of units, and the temporary rectifier unit according to the space where the temporary rectifier is installed, on the condition that the full charge at the time of load feeding is within 24 hours in the capacity of the temporary storage battery The renewal construction method for DC power supply by uninterruptible power supply, which determines the combination of one rated current and number.
請求項１の発明では、従来の整流器に装備されているものうち、当該更改工事に不要な機能を除き、当該工事に特化した仮設電源装置に限定して小型化すると同時に各部材に物理的に分割した。これにより空きスペースの有効利用と現場状況による部材の組み合わせにより機能追加、削除、変更が可能となり、狭いスペースでの無停電による直流電源装置の更改（更新）工事が可能となった。 According to the first aspect of the present invention, the conventional rectifier is equipped with a function that is unnecessary for the renewal work, except for the temporary power supply device specialized for the work. Divided into As a result, functions can be added, deleted, and changed by combining the use of empty space and members according to the field conditions, and the DC power supply can be renewed (updated) in a small space due to an uninterruptible power failure.
また、請求項２の発明によれば、仮設ＳＩＤを用いることにより、直流負荷側の電圧にあわせて電圧を調整できる。また、請求項３の発明によれば、仮設蓄電池の選定に当たって、負荷設備の許容電圧値、電圧降下値、設置スペース等を考慮して蓄電池の容量、蓄電池タイプ、充電電圧を決定するため、負荷側に悪影響を与えずに、狭いスペースに設置することができる。 According to the invention of claim 2, the voltage can be adjusted according to the voltage on the DC load side by using the temporary SID. Further, according to the invention of claim 3, in selecting a temporary storage battery, in order to determine the capacity of the storage battery, the storage battery type, and the charging voltage in consideration of the allowable voltage value of the load facility, the voltage drop value, the installation space, etc., the load It can be installed in a narrow space without adversely affecting the side.
また、請求項４の発明によれば、仮設蓄電池の容量決定、タイプ決定、充電電圧の決定にあたり、当該仮設蓄電池のバックアップ時間を算出し、これが必要バックアップ時間の３倍になっているか否かで、仮設ＳＩＤ、蓄電池の容量増量等をその設置場所があるかどうかで判断し、ない場合は既設の蓄電池を用いる等、設置場所の有無によって、使用部材を選定し、狭いスペースでの無停電工事が可能となる。また、請求項５の発明によれば、仮設整流器の選定にあたり、直流負荷側の必要負荷電流値以上となり、前記仮設蓄電池の容量において負荷給電時のフル充電が２４時間以内であり、かつ当該仮設整流器を設置するスペースがあることを条件として前記仮設整流器のユニット１個の定格電流及び個数の組み合わせを決定するため、仮設整流器の選定が的確に行われ、当該狭いスペースでの無停電工事が可能となる。 According to the invention of claim 4, in determining the capacity of the temporary storage battery, determining the type, and determining the charging voltage, the backup time of the temporary storage battery is calculated, and whether or not this is three times the required backup time. , Temporary SID, increase in capacity of storage battery, etc. are judged based on whether or not the installation location exists. If there is no installation location, use existing storage battery, etc. Is possible. According to the invention of claim 5, in selecting a temporary rectifier, the load current value is equal to or greater than the required load current value on the DC load side, and the full charge during load feeding is within 24 hours in the capacity of the temporary storage battery, and the temporary Since the combination of the rated current and the number of units of the temporary rectifier unit is determined on the condition that there is a space to install the rectifier, the temporary rectifier is selected accurately and uninterruptible work is possible in the narrow space. It becomes.
この発明は、交流電源を整流器により直流電源に変換するとともにバックアップ用の蓄電池に常時は充電する、既設の直流電源装置を新設の直流電源装置に更改する工事において、仮設交流入力分岐遮断機仮設整流器、及びバックアップ用の仮設蓄電池から成り、これらは当該更改工事に不要な機能を具備せず、夫々独立して設けられ、かつ夫々着脱自在に電気的に接続された仮設電源装置を設け、当該仮設電源装置の各部材を前記既設の電源装置の近くに設置して、当該仮設電源装置の前記仮設交流入力遮断機に商用交流電源を入力し、これを仮設整流器に通して直流負荷側に直流電源を供給し、かつ前記仮設整流器から仮設蓄電池に充電させるバイパス整流回路を設け、当該バイパス整流回路に前記商用交流電源を通電したのち、既設の直流電源装置を撤去し、新設の直流電源装置を設置し、当該新設の直流電源装置を交流電源及び直流負荷に接続したのち、前記バイパス整流回路の接続を解除し、当該仮設電源装置を撤去する、無停電による直流電源装置の更改工事方法とした。 The present invention relates to a temporary AC input branch circuit breaker temporary rectifier in a construction in which an AC power is converted into a DC power by a rectifier and a storage battery for backup is always charged, and an existing DC power supply is renewed to a new DC power supply. And temporary storage batteries for backup, which do not have functions unnecessary for the renewal work, are provided with temporary power supply devices that are provided independently and detachably and electrically connected, respectively. Each member of the power supply device is installed near the existing power supply device, commercial AC power is input to the temporary AC input circuit breaker of the temporary power supply device, this is passed through the temporary rectifier, and the DC power source is connected to the DC load side. And providing a bypass rectifier circuit for charging the temporary storage battery from the temporary rectifier, and supplying the commercial AC power to the bypass rectifier circuit, Remove the direct current power supply, install a new DC power supply, connect the new DC power supply to the AC power supply and DC load, then disconnect the bypass rectifier circuit and remove the temporary power supply The renewal method of DC power supply due to uninterruptible power was adopted.
以下、この発明の実施例１を図に基づいて説明する。
図１はこの発明の更改工事に用いる仮設電源装置の既設電源装置への接続構成を示す。この発明の仮設電源装置Ａは、仮設交流入力分岐遮断機１、仮設整流器２、仮設ＳＩＤ３、仮設蓄電池４及び仮設遮断機５とから成る。前記仮設交流入力分岐遮断機１は既設の交流分電盤１０の出力端子に空きがない場合に用い、交流分岐割入接続するものである。前記仮設交流入力分岐遮断機１は、前記交流分電盤１０の出力端子に入力端子を接続し、複数の出力端子の一つに既設整流器１１を接続し、他の出力端子に仮設整流器２を接続するものである。そして、既設整流器１１で交流を直流に変換し、ＳＩＤで電圧を調整して直流分電盤１２に至り、当該直流分電盤１２から各通信負荷設備１３に直流電源を供給する。一方前記仮設整流器２から仮設ＳＩＤ３及び仮設断路機５を経て既設の直流分電盤１２に至るバイパス整流回路を構成している。既設蓄電池１４は、停電時に既設整流器１１の常閉型の開閉器を通して前記ＳＩＤに直流電源を供給する。また、仮設蓄電池４も同様である。
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 shows a connection configuration of a temporary power supply used for renewal work of the present invention to an existing power supply. The temporary power supply device A of the present invention includes a temporary AC input branch breaker 1, a temporary rectifier 2, a temporary SID 3, a temporary storage battery 4, and a temporary breaker 5. The temporary AC input branch breaker 1 is used when there is no empty output terminal of the existing AC distribution board 10 and is used for AC branch interrupt connection. The temporary AC input branch breaker 1 has an input terminal connected to the output terminal of the AC distribution board 10, an existing rectifier 11 connected to one of the plurality of output terminals, and a temporary rectifier 2 connected to the other output terminal. To connect. Then, the existing rectifier 11 converts alternating current into direct current, adjusts the voltage with the SID, reaches the direct current distribution board 12, and direct current power is supplied from the direct current distribution board 12 to each communication load facility 13. On the other hand, a bypass rectifier circuit from the temporary rectifier 2 through the temporary SID 3 and the temporary disconnecting device 5 to the existing DC distribution board 12 is configured. The existing storage battery 14 supplies DC power to the SID through a normally closed switch of the existing rectifier 11 at the time of a power failure. The same applies to the temporary storage battery 4.
前記仮設整流器２は、図２に示すように、複数の整流器ユニット２ａを備えた（ｎ＋１）の冗長形を組んだものとし、一つのユニット２ａがこわれても他のユニット２ａが働き、負荷側に影響のないようにしている。また、無停電作業を意図し微小の電圧調整を可能とするため、複数ある整流器ユニット（冗長用も含めて）２ａの一括電圧調整機能を残し、従来よりも電圧の微調整が可能な機能を採用した。すなわち、可変抵抗器２ｂを可変範囲を狭めて操作性向上を目的として鈍感に作動するようにした。また、前記仮設蓄電池への端子回路に開閉器２ｃを設けている。 As shown in FIG. 2, the temporary rectifier 2 is a (n + 1) redundant type including a plurality of rectifier units 2a, and even if one unit 2a is broken, the other unit 2a works and the load side So that there is no impact. In addition, in order to enable fine voltage adjustment with the intention of uninterruptible work, there is a function that allows fine adjustment of voltage compared to the past, leaving the collective voltage adjustment function of multiple rectifier units (including redundant ones) 2a. Adopted. That is, the variable resistor 2b is operated insensitively for the purpose of improving operability by narrowing the variable range. Moreover, the switch 2c is provided in the terminal circuit to the temporary storage battery.
図３は当該仮設整流器２の外観を示し、ボックス型で、下にキャスター２ｄ及び固定脚２ｅを設け、上部には、表示、蓄電池出力ブレーカ、整流器出力調整一括ボリューム２ｆを設けている。その下に三段で前記整流器ユニット２ａを設け、下部に、交流入力端子、蓄電池入力端子、直流出力端子、接地端子等の端子盤２ｇを設けている。さらにボックスの上面には取っ手２ｈを設けている。 FIG. 3 shows the appearance of the temporary rectifier 2, which is a box type, provided with casters 2d and fixed legs 2e below, and provided with a display, a storage battery output breaker, and a rectifier output adjustment collective volume 2f on the top. The rectifier unit 2a is provided in three stages below, and a terminal board 2g such as an AC input terminal, a storage battery input terminal, a DC output terminal, and a ground terminal is provided in the lower part. Further, a handle 2h is provided on the upper surface of the box.
また、前記仮設ＳＩＤ３は、図４に示すようにシリコンダイオードから成り、入力端子３ａは前記仮設整流器２の出力端子に接続され、その出力端子３ｂは、前記仮設遮断機５を通して直流分電盤１２に接続される。このＳＩＤ３は蓄電池充電電圧と負荷電圧との誤差を埋める電圧調整用のもので、既存のものは、蓄電池の電圧が下がった場合に自動的に前記ダイオード回路を短絡し、電圧を上昇するようになっているが、今般のものは手動開閉器３ｃを設け、手動操作となっている。また、外観は、図５に示すように、ボックス型で、複数の各つまみ３ｄを動かして開閉する手動型となっており、つまみ３d(ＳＩＤ)一つにつき０．７Ｖ電圧降下することとなっている。 Further, the temporary SID 3 is formed of a silicon diode as shown in FIG. 4, the input terminal 3 a is connected to the output terminal of the temporary rectifier 2, and the output terminal 3 b is connected to the DC distribution board 12 through the temporary breaker 5. Connected to. This SID3 is for voltage adjustment that fills the error between the storage battery charging voltage and the load voltage. The existing one automatically short-circuits the diode circuit and increases the voltage when the storage battery voltage decreases. However, the present one is provided with a manual switch 3c and is manually operated. Further, as shown in FIG. 5, the external appearance is a box type, which is a manual type in which a plurality of knobs 3d are moved to open and close, and a voltage drop of 0.7V is caused for each knob 3d (SID). ing.
また、前記仮設蓄電池４は、前記仮設整流器２の開閉器２ｃに接続されており、小型で容量が大きいＨＳ型とした。 In addition, the temporary storage battery 4 is connected to the switch 2c of the temporary rectifier 2, and is a small HS type having a large capacity.
次にこの仮設電源装置Ａを用いて、既存の直流電源装置の更改手順を説明する。
図１２に示すように、既存の電源装置は、交流分電盤１０から既設整流器１１に交流電源が入力し、整流回路で直流に変換され、かつＳＩＤ１１ｂにより電圧を調整されて直流分電盤１２に至り、各通信負荷設備１３に直流電源が供給される。そして、停電時のバックアップ用として前記整流器１１の開閉器１１ｃと蓄電池１４が接続されている。
Next, the renewal procedure of the existing DC power supply device will be described using the temporary power supply device A.
As shown in FIG. 12, in the existing power supply device, AC power is input from the AC distribution board 10 to the existing rectifier 11, is converted to DC by the rectifier circuit, and the voltage is adjusted by the SID 11b, and the DC distribution board 12 is converted. Thus, DC power is supplied to each communication load facility 13. And the switch 11c of the said rectifier 11 and the storage battery 14 are connected for backup at the time of a power failure.
そこで、前記交流分電盤１０と既設整流器１１との接続回線に並行して、図１に示すように交流分電盤１０の出力端子と仮設交流分岐遮断機１の入力端子を接続し、当該仮設交流分岐遮断機１の出力端子の一方と前記既設の整流器１１の入力端子と接続し、当該仮設交流分岐遮断機１の出力端子の他方と仮設整流器２の入力端子とを接続する。また、前記のように仮設整流器２、仮設ＳＩＤ３、仮設遮断機５を接続し、また、仮設整流器２の開閉器２ｃと仮設蓄電池４を接続する。さらに、前記仮設遮断機５と前記直流分電盤１２の入力端子に接続する。これにより仮設電源装置Ａの接続が終了する。そして、前記仮設交流分岐遮断機１の一方の遮断機を入れて既設整流器１１への回路を接続して図１の交流分電盤１０と既設整流器１１とを直接接続した回線を外し、図１の構成となる。前記仮設電源装置Ａの各部材は既設の電源装置の近くに設置する。 Therefore, in parallel with the connection line between the AC distribution board 10 and the existing rectifier 11, the output terminal of the AC distribution board 10 and the input terminal of the temporary AC branch breaker 1 are connected as shown in FIG. One of the output terminals of the temporary AC branch breaker 1 is connected to the input terminal of the existing rectifier 11, and the other output terminal of the temporary AC branch breaker 1 is connected to the input terminal of the temporary rectifier 2. Further, the temporary rectifier 2, the temporary SID 3, and the temporary breaker 5 are connected as described above, and the switch 2c of the temporary rectifier 2 and the temporary storage battery 4 are connected. Further, the temporary circuit breaker 5 and the input terminal of the DC distribution board 12 are connected. Thereby, the connection of the temporary power supply device A is completed. 1 is inserted and the circuit to the existing rectifier 11 is connected to disconnect the line directly connecting the AC distribution board 10 and the existing rectifier 11 of FIG. It becomes the composition of. Each member of the temporary power supply device A is installed near an existing power supply device.
その後、前記仮設遮断機５を閉路し、仮設交流分岐遮断機１の他方の遮断機を閉路する。これにより、交流分電盤１０から、既設の整流回路と仮設の整流器２等のバイパス整流回路へと双方に電流が流れる。そして、前記各通信負荷設備１３の負荷電圧等と、仮設の整流器２及び仮設SID3を調整し、当該調整終了後、仮設交流分岐遮断機１の一方の遮断機を開き、既設整流器１１への交流電源の供給を止める。 Thereafter, the temporary breaker 5 is closed, and the other breaker of the temporary AC branch breaker 1 is closed. Thereby, a current flows from the AC distribution board 10 to both the existing rectifier circuit and the bypass rectifier circuit such as the temporary rectifier 2. Then, the load voltage and the like of each communication load facility 13, the temporary rectifier 2 and the temporary SID 3 are adjusted. After the adjustment is completed, one of the temporary AC branch breakers 1 is opened, and the AC to the existing rectifier 11 is opened. Stop supplying power.
これにより、交流分電盤１０、仮設交流分岐遮断機１、仮設整流器２、仮設SID３、仮設遮断機５、直流分電盤１２へと電流が流れる。そこで、既設の電源装置である整流器１１及び既設蓄電池１４を取り外し、これらの取り外し場所に新設の電源装置である整流器及び蓄電池を設置する。そして、これらを前述と同様に、交流分電盤１０の出力端子と整流器を、当該整流器の出力端子を直流分電盤１２の入力端子に接続し、また、蓄電池を前記整流器に接続する。その後、仮設電源装置Ａを撤去する。これにより、電源装置の更改工事は終了する。 As a result, current flows to the AC distribution board 10, the temporary AC branch breaker 1, the temporary rectifier 2, the temporary SID 3, the temporary breaker 5, and the DC distribution board 12. Therefore, the rectifier 11 and the existing storage battery 14 that are the existing power supply devices are removed, and the rectifier and the storage battery that are the new power supply devices are installed at these removal locations. Then, in the same manner as described above, the output terminal of the AC distribution board 10 and the rectifier are connected, the output terminal of the rectifier is connected to the input terminal of the DC distribution board 12, and the storage battery is connected to the rectifier. Thereafter, the temporary power supply device A is removed. Thereby, the renewal work of the power supply device is completed.
次に、前記仮設電源装置Ａを設置する負荷設備の電圧及び電流、電源ケーブルの電路等に基づいて、仮設電源装置Ａの構成及び容量等を選定する過程を説明する。図６はこの選定フローを示す。 Next, the process of selecting the configuration, capacity, and the like of the temporary power supply device A based on the voltage and current of the load facility where the temporary power supply device A is installed, the power path of the power cable, and the like will be described. FIG. 6 shows this selection flow.
まず、図６において、ステップ１として負荷設備の許容電圧幅はいくらか（Ｓ１）を求める。例えば負荷電圧４８Ｖ±１０％であると、許容電圧幅は４３．２Ｖ〜５２．８Ｖである。ステップ２として電路の電圧降下はいくらかを求める。例えば、電路降下は２．４Ｖとする（Ｓ２）。次に、ステップ３として、これらの値により、蓄電池１セルあたりの放電終止電圧を決定する（Ｓ３）。前記の例では、２Ｖの蓄電池２４個を用いると４８Ｖとなり、前記降下電圧２．４Ｖを減ずると、４８Ｖ−２．４Ｖ＝４５．６Ｖとなる。実際の装置では上記４３．２Ｖまで耐えられる。電圧降下分２．４Ｖ÷２４個＝０．１Ｖとなり、１セル当たり２Ｖ−０．１Ｖ＝１．９Ｖまで電圧降下してもよいこととなる。 First, in FIG. 6, as step 1, what is the allowable voltage width of the load facility (S1) is obtained. For example, when the load voltage is 48V ± 10%, the allowable voltage width is 43.2V to 52.8V. In step 2, the voltage drop of the electric circuit is determined. For example, the electric circuit drop is set to 2.4 V (S2). Next, as step 3, the final discharge voltage per storage battery cell is determined based on these values (S3). In the above example, when 24 2V storage batteries are used, 48V is obtained, and when the drop voltage 2.4V is reduced, 48V-2.4V = 45.6V is obtained. The actual device can withstand the above 43.2V. The voltage drop is 2.4V / 24 = 0.1V, and the voltage may be dropped to 2V-0.1V = 1.9V per cell.
次に、ステップ４として、蓄電池によるバックアップ対象の負荷電流はいくらかを調べる（Ｓ４）。これは、当該電源装置から直流電源を供給する負荷設備の必要電流である。また、ステップ５として、当該電源設備に非常用発電機があるかどうかを調べる（Ｓ５）。非常用発電機がある場合は、蓄電池によるバックアップ時間は少なくて良い（Ｓ５ａ）。例えば、６０分等、当該電源装置の所有者である顧客と相談する。また、非常用電源がない場合は、蓄電池によるバックアップ時間を長くする（Ｓ５ｂ）。これも前記顧客の要望を加味して、例えば、１８０分と設定する。 Next, as step 4, it is examined how much load current is to be backed up by the storage battery (S4). This is a necessary current of a load facility for supplying DC power from the power supply device. Moreover, as step 5, it is investigated whether the said power supply installation has an emergency generator (S5). When there is an emergency generator, the backup time by the storage battery may be short (S5a). For example, consult with the customer who is the owner of the power supply device for 60 minutes or the like. When there is no emergency power supply, the backup time by the storage battery is lengthened (S5b). This is also set to 180 minutes, taking into account the customer's request.
次に、ステップ６として、仮設蓄電池の設置スペースを考慮し（Ｓ６）、これまでのステップの数値等を考慮して、ステップ７で仮設蓄電池の容量を決定する（Ｓ７）。また、これによりステップ８として、当該蓄電池のタイプを決定する（Ｓ８）。また、そこで、ステップ９として、充電電圧を決定する（Ｓ９）。これを詳細に述べると、前記ステップ５までの数値を考慮し仮設蓄電池の容量、蓄電池タイプ、充電電圧を決定して仮設蓄電池を仮決定し、当該仮設蓄電池が設置スペースに入るものであれば、当該仮設蓄電池を決定するが、当該仮設蓄電池が設置スペースに入らない場合は、前記蓄電池の１セルの容量を大きいものにしてセルの組数を少なくして仮設蓄電池の大きさを前記設置スペースに入るものに選定して仮設蓄電池を決定する。例えば、仮設電池は１セル１２Ｖ ２００ＡＨであるが、４８Ｖを出すために４セルを直列に接続してこれを１組としている。そして、必要な容量が４８Ｖで４００ＡＨの時には、１セル１２Ｖ ２００ＡＨ×２組（８セル）=４００ＡＨとするか、又は１セル１２Ｖ ４００ＡＨ×１組（４セル）４００ＡＨの選択肢があり、これを前記設置スペースによって決める。そして、前記ステップ７、８及び９を決定する。また、前記充電電圧は、当該上記例では、均等充電電圧が５２．８Ｖ、浮動充電電圧が５２．３Ｖとする。そして、ステップ１０として、この蓄電池のタイプの容量（Ａアワー）、充電電圧、前記ステップ４の必要電流値から容量換算時間Ｋ（時）を算出し、使用する当該電池の標準特性表を用いて、前記ステップ３での１セル当たりの放電終止電圧１．９Ｖから、放電時間Ｔ（分）を求め、これらにより蓄電池のバックアップ時間を決定する（Ｓ１０）。 Next, in step 6, the installation space of the temporary storage battery is taken into consideration (S6), and the capacity of the temporary storage battery is determined in step 7 in consideration of the numerical values of the previous steps (S7). Moreover, the type of the said storage battery is determined as step 8 by this (S8). Therefore, as step 9, the charging voltage is determined (S9). If this is described in detail, the capacity of the temporary storage battery, the storage battery type, the charging voltage are determined and the temporary storage battery is temporarily determined in consideration of the numerical values up to step 5, and if the temporary storage battery enters the installation space, The temporary storage battery is determined, but if the temporary storage battery does not enter the installation space, the capacity of one cell of the storage battery is increased to reduce the number of cells and the size of the temporary storage battery is set in the installation space. The temporary storage battery is determined by selecting the entry. For example, although a temporary battery is 1 cell 12V 200AH, in order to output 48V, 4 cells are connected in series and this is made into 1 set. And when the required capacity is 48V and 400AH, there are options of 1 cell 12V 200AH x 2 sets (8 cells) = 400AH, or 1 cell 12V 400AH x 1 set (4 cells) 400AH, It depends on the installation space. Then, the steps 7, 8 and 9 are determined. In the above example, the charging voltage is assumed to be an equal charging voltage of 52.8V and a floating charging voltage of 52.3V. Then, as step 10, the capacity conversion time K (hour) is calculated from the capacity (A hour) of this storage battery type, the charging voltage, and the necessary current value of step 4, and the standard characteristic table of the battery to be used is used. The discharge time T (minute) is obtained from the discharge end voltage 1.9 V per cell in the step 3, and the backup time of the storage battery is determined based on these (S10).
そして、ステップ１１として、１、２週間の仮設期間内に停電は３回はないだろうとの判断のもとに、前記ステップ１０で決定した蓄電池のバックアップ時間が、必要バックアップ時間の３倍かどうかを調べる（Ｓ１１）。必要バックアップ時間の３倍ある場合は、ステップ１２で仮設ＳＩＤ３を必要とせず、仮設ＳＩＤ３をなしとする（Ｓ１２）。また、必要バックアップ時間の３倍ない場合は、ステップ１３で仮設ＳＩＤ３を設置する必要があると判断する（Ｓ１3）。この仮設ＳＩＤ３の有無の差は、停電からの復電後の蓄電池の充電に関わる。仮設ＳＩＤ３がない場合は、蓄電池充電電圧は負荷電圧に合わせることとなり、この場合、蓄電池の充電電圧は、本来の充電電圧より低くなる。従って、停電で蓄電池が放電した場合、復電後は仮設ＳＩＤ３がある場合は、フル充電となるが、仮設ＳＩＤ３がない場合は、部分充電となるので、２回目以降の停電時のバックアップ時間が、仮設ＳＩＤ３がある場合よりない場合が短くなる。 Then, as a step 11, whether or not the backup time of the storage battery determined in the step 10 is three times the required backup time based on the judgment that there will be no three power outages within the temporary period of 1 or 2 weeks. (S11). If there is three times the required backup time, the temporary SID3 is not required in step 12 and the temporary SID3 is not used (S12). If it is not three times the required backup time, it is determined in step 13 that a temporary SID3 needs to be installed (S13). This difference in the presence or absence of the temporary SID 3 is related to the charging of the storage battery after power recovery from a power failure. When there is no temporary SID3, the storage battery charging voltage is adjusted to the load voltage. In this case, the charging voltage of the storage battery is lower than the original charging voltage. Therefore, when the storage battery is discharged due to a power failure, if there is a temporary SID3 after power recovery, the battery will be fully charged, but if there is no temporary SID3, it will be partially charged, so the backup time at the second and subsequent power failures will be The case where there is no temporary SID3 is shorter than the case where there is a temporary SID3.
仮設ＳＩＤ３を必要とした場合、ステップ１４で当該仮設ＳＩＤ３の設置スペースがあるかどうかを検討する（Ｓ１４）。スペースがあれば、仮設ＳＩＤ３を設置することとする。前記スペースがない場合は、蓄電池容量を増量する必要がある。そこで、ステップ１５でこの蓄電池の容量増量のスペースはあるかどうかを判断する（Ｓ１５）。スペースがあれば、ステップ１６で蓄電池容量増量を決定し（Ｓ１６）、前記ステップ７に戻る。また、蓄電池の容量増量のスペースがなければ、ステップ１７で前記既設蓄電池１４を使用することと決定する（Ｓ１７）。この場合、切替え手順は増加する。そしてこの既設蓄電池１４を使用することとして前記ステップ７に戻る。このようにして仮設蓄電池４の容量、タイプ、充電電圧等を決定し、さらに仮設ＳＩＤ３の使用を決定する。 When the temporary SID3 is required, it is examined in step 14 whether or not there is an installation space for the temporary SID3 (S14). If there is a space, a temporary SID3 will be installed. When there is no space, it is necessary to increase the storage battery capacity. Therefore, it is determined in step 15 whether there is a space for increasing the capacity of the storage battery (S15). If there is space, an increase in storage battery capacity is determined in step 16 (S16), and the process returns to step 7. If there is no space for increasing the capacity of the storage battery, it is determined in step 17 that the existing storage battery 14 is used (S17). In this case, the switching procedure increases. And it returns to the said step 7 as using this existing storage battery 14. FIG. In this way, the capacity, type, charging voltage and the like of the temporary storage battery 4 are determined, and further, the use of the temporary SID 3 is determined.
次に、仮設整流器２の容量等を選定する。前記ステップ４で調べた負荷電流値に基づいて、ステップ１８で、前記各整流器ユニット２ａの１個の定格電流を何アンペアとし、これをいくつ置くかを仮決定する（Ｓ１８）。例えば、負荷電流２００Ａの場合で、１個冗長形は持ちたいと考えた場合、１００Ａのユニット３を３個とする。そして、ステップ１９として、負荷給電時の２４時間以内のフル充電において、前記ステップ７で決定した蓄電池容量を基にして、ステップ１８で仮決定した整流器の電流から負荷電流を減じた値で蓄電池容量を割った値が２４時間以内かどうかを算出する（Ｓ１９）。２４時間以内であれば、ステップ２０において、負荷電流以上の電流値を有する整流器とするには何アンペアのユニットを何個揃えるかを決定する（Ｓ２０）。この決定に当たって、仮設整流器２の設置スペースはあるかどうかをステップ２１で判断し（Ｓ２１）、なければ、１個のユニットの容量を大きいものにし、数を減らす等に変更し、ステップ１８に戻る。また、前記ステップ１９において、２４時間以上であれば、ステップ１８に戻る。このようにして、仮設整流器２を設定する。 Next, the capacity and the like of the temporary rectifier 2 are selected. Based on the load current value checked in step 4, in step 18, it is provisionally determined how many amperes one rated current of each rectifier unit 2a is to be placed and how many are placed (S18). For example, in the case of a load current of 200 A, if it is desired to have a single redundant type, the number of units 3 of 100 A is three. Then, as a step 19, in the full charge within 24 hours at the time of load feeding, the storage battery capacity is obtained by subtracting the load current from the rectifier current temporarily determined in the step 18 based on the storage battery capacity determined in the step 7. It is calculated whether the value obtained by dividing is within 24 hours (S19). If it is within 24 hours, it is determined in step 20 how many ampere units are arranged to make a rectifier having a current value equal to or greater than the load current (S20). In this determination, it is determined in step 21 whether or not there is a space for installing the temporary rectifier 2 (S21). If not, the capacity of one unit is increased, the number is reduced, etc., and the process returns to step 18. . In step 19, if it is 24 hours or more, the process returns to step 18. In this way, the temporary rectifier 2 is set.
また、この発明の仮設電源装置Ａを用いた直流電源装置の更改工事において、負荷設備等の通信回線に影響が出てはいけないので、図７の構成により、実証試験を行った。実証試験内容は、
１． 既設負荷出力電圧５０．７Ｖ、仮設負荷出力電圧５０．２Ｖ、通信負荷設備電流合計１７．８Ａで仮設電源接続した場合（図８）。
２． 仮設負荷出力電圧５０．２Ｖ→５１．７Ｖにて仮設電源に負荷電流の９５％が移行（図９）。
３． 既設整流器停止（図１０）。
４． 既設整流器切り離し（図１１）。
測定箇所としては、
交流入力電圧：既設整流器交流入力端子
負荷出力電圧：電流・直流分電盤入力端子
In addition, in the renewal work of the direct current power supply device using the temporary power supply device A of the present invention, the communication line such as the load facility should not be affected. Therefore, a verification test was performed with the configuration of FIG. The contents of the demonstration test are
1. When a temporary power supply is connected with an existing load output voltage of 50.7 V, a temporary load output voltage of 50.2 V, and a communication load facility current total of 17.8 A (FIG. 8).
2. When the temporary load output voltage is 50.2 V → 51.7 V, 95% of the load current is transferred to the temporary power source (FIG. 9).
3. Stop existing rectifier (Figure 10).
4). Disconnect existing rectifier (Figure 11).
As a measurement location,
AC input voltage: Existing rectifier AC input terminal Load output voltage: Current / DC distribution board input terminal
上記１．〜４．における各測定波形を図８〜図１１に示す。各測定において、負荷出力に異常電流・電圧は見られなかった。既設整流器・仮設整流器内部負荷出力近辺にあるノイズ除去回路の効果と推測される。ただし、図９では、前記２．の測定はサンプリング時間が長いため波形の一部を表示している。また、通信負荷にエラー測定器を接続し、実証試験中を通して伝送エラー試験（速度：６Ｍｂｐｓ）を実施し、エラーフリーが確認できた。 Above 1. ~ 4. Each measurement waveform in Fig. 8 is shown in Figs. In each measurement, no abnormal current / voltage was found in the load output. This is presumed to be the effect of the noise removal circuit in the vicinity of the load output of the existing rectifier / temporary rectifier. However, in FIG. Since the sampling time is long, a part of the waveform is displayed. In addition, an error measuring device was connected to the communication load, and a transmission error test (speed: 6 Mbps) was performed throughout the verification test, and error free was confirmed.
１ 仮設交流入力分岐遮断機 ２ 仮設整流器
２ａ 整流ユニット ２ｃ 開閉器
３ 仮設ＳＩＤ ４ 仮設蓄電池
５ 仮設遮断機
１０ 交流分電盤 １１ 既設整流器
１１ａ 整流器 １１ｂ ＳＩＤ
１１ｃ 開閉器 １２ 直流分電盤
１３ 通信負荷設備 １４ 既設蓄電池
1 Temporary AC Input Branch Breaker 2 Temporary Rectifier 2a Rectifier Unit 2c Switch 3 Temporary SID 4 Temporary Storage Battery 5 Temporary Breaker
10 AC distribution board 11 Existing rectifier 11a Rectifier 11b SID
11c Switch 12 DC distribution board 13 Communication load equipment 14 Existing storage battery
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |