El43~~C Public Disclosure Authorized PROJECTOF ZHEJIANGELECTRIC POER DEVELOPMENT NINGBOCITY'S ELECTRICPOER DISTRIBUTIONNETWORK REMOULDINGPROJECT REPORTON THE ENVIRONMENTALEFFECTS Public Disclosure Authorized Public Disclosure Authorized INSTITUTEOF ELECTRICPOER DESIGNOF ZHEJIANGPROVINCE JANUARY1994 HANGZHOU I~~~~~~\vR Public Disclosure Authorized NINGBOCITY' S ELECTRICPOER DISTRIBUTIONNETWORK REMOULDINGPROJECT REPORTON THE ENVIRONENTAL EFFECTS STAFFOF RESPONSIBILITY BEADOF TIE INSTITUTE LI LIAM-KA[ (SENIORENGINEER) ENGINEER-IN-CHIEF: SONGYU-YEN (SENIORENGINEER) DIRECTORENGINER : ZIDUCHUANG (SENIORENGINEER) PROOFRDER NI CHENG-GANG(ENGINEER) COIPILE: LIN SBAO-PING(ENGINEER) NI CRENG-GANG(ENGINEER) UNITIN CHARGEOF THEPROJECT: INSTITUTEOF ELECTRICPOWER DESIGNOF ZHEJIANGPROVINCE REPORTON ENVIRONMENTAL EFFECTS OF NINGBOCITY'S POWER DISTRIBLTION NETWORK REMOULDING CONTENT 1.Prefcee 1.1 Reasot forConstruction .......................... 1 I.2 Coverageof ReeearciWork ....... ......... .. 4 1.3 Basi6of Drafting,Regzlations and Standards of Exectitionof theReport .. _. A GeneralSuzvey of tieProject 2.1 Typeof theProject . 18 2.2 Ureecy of theProject .......................... 19 9. 3 Locationsof theProject ........................ Zo 2-4 Scaleand Overational Efficecey ................. 20 aT'e 5 Planfor Ratificationaud Executionof theProject . .. .......21 3. EnrironmentalSarvey 3.1 A Surveyof theNatwral Conditions .24 3.2 A Surveyof theSocial Conditions. 2 i 4. Tn. ExpectedEnvironmental EffecLt and thePrecautioAarY Neasures 4. 1 The Effectsan Natural Eaviroement ..............36 4.2 The EnvironmentalEffects During the Operation 64 4.3 Its Influenceon HumanBeing and ItsUse Value 64 4.4 ltcInfluence on LivingQuality ........... 72 4.5 Reduce theUnfavorable Effects .................. 14 5. Cost-EffectAnalysis 5.1 The Cost-Effectof the PrecautioaaryMeasures ... 81 5.2 Cost-EffectAtalysis of theProject .83 S. Requirementsfor the InstituLionsand the Plan for EnvironmeutalMonitoring 6.1 Requirementsfor the Institutions. 86 C,9 Environmental Nonitoring ........................ 86 OF. Pblic Participation 7.i PublicPartic ipation ....................... ....88 7.2 NanagementOrganizattlocs ............... 89 B. Conclusion 8.1 TheMethods forReducing the Unfavorable Effects 89 S.2 The Conclusionof theResearc Report. 92 9. Auneuaiu.98 .... .... ....................................9. ii REPORT ON ENVIRONMENTAL EFFECTS OF NINGBO CITY'S POWER DISTRIBUTION NETWORK REMOULDING 1. Preface 1.1 esson For Construction 1.1.1The PresentSituation and Problemsof Ningbo's PowerDistribution Network Niugbois themajor provincial city of ZhejiijgProvince and one of the key open citiesof China that individually accountedin the economic planning. Niabo's power distributionnetwork has a historyof more than 30 years, witha considerablescale. Now Ningbo city hls 2 220KV transformersubstations (total eapacity 390,000 KVA) , 12 110KVtransformer substations (total capacity 724, 600 KVA) and25 35KV transformersubstations (total capaeity 251,200 KVAJ,3609 1OKV transformers (total capacity 687,700 KVA), a total1624. 6 km lengthof 1o RV circuits(see Table-1. 1.1) . It has a total2044600 [VA of transformationcapacity. The capacityfor power plants'generators is 1650000KW( Zenghai 1060000kw,Beilun 600000 kw).In 1990 the cityproper has a power supply of 230700K,yearly power supply 1.356 billion kwh. Theproblems of Ninbo's powernetwork include: (1)Geographically divided by TongRiver, Fonghua River andYuyao River, the linkagesbetween 220KV and 110KV electric source pointsare rather weak. The dependability of powernetworks is poor; (2)The cityproper of Niabonow hag ZengkaiPower Plant (capacity1.05 million kw), and Beilu1n Harbour Power Plant \ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ II V C ASJt/K;A//SO Zhe#4iW P;? ere pI. i tXCl TY Z _ --' Ta.e- I 1.4 r 23I-FuEIc GV I cv-Rnt rr r . I e n d w 5;Xek.+;erns asl4hs4t*nandlAsOrv-.r Lnes oi 'vA 3So Cy .-.. J 22ojszi1T,¶fcFirhwE £d,X+.icn -(A-~~c bnrn; Iin (600,000kw now in operation).Thua Ninbo has become a power- supplyend insteadof a power-receiveend. The voltageof thenetworks is toomuch higher than is eormaland cannot be adjus ted; (a)The qualityof thenetwork voltage is ratheriRferior. leadingto thedifficulty of uselessrecompense; (4) The technicalequipment level of distribution networksis low,the networkwires are weak, IOKV cable networkonly constitutes 12%,Lnd disasterresistance is weak; (5)The levelof networkautomation is rather low, and thereis no tadicalimprovement of eomunicationconditions. 1. 1.2 Necessityof theRemoulding of PowerNetworks of NingboCity In Ningbocity, supply- and- distribution equipment of networks are backward:the strueture of networksis weak; powercircuits are thin,circuit wires are greatlydamaged, and the power supply is hindred aid overcharged; the level of stabilityof thenetworks is low. Especiallywith the rapidgrowth of nationaleconomy the power supply of Ninbo cityis increasingby amplemargins, while the distribution powernetworks have not receivedtimely improvementand powercables constitute a lowpercentage. Due to all these, the contradictionshave become prominent; it is therefore difficultto meetthe needs of Nibo' s economic development and openingto theworld and the needsof power supply for the investmentof foreigntraders. - 2 - 1.1.8Basic Conceptions of the Bemouldingof Power Networksof NinboCity. In viewof theprepsent situation and the problemsof thepower networks of Ninbocity, ZkejinagElectric Power Companyproposes Zhejiang Power DevelopmentProject' of simultaneousconstruction of power sources and power networkswith the purpoBe of economicaluse of powerenergy. Put on theagenda is theremoulding of thepower networks of Ninbocity, which is part of 'ZhejiingElectric Power DevelopmentProject' and is at the same time a Tery importantlink in the chainof constructionof coastalpower plantslike Beilun Harbour Power Plant.This projectof Ninbo'S powernetworks kas received the great support of all thedepartments of thecentral and localgovernments as well as thegreat support of thepeople. The remouldingproject of Ninbo'spower networksis designedto achieve an economical,rational,safe, reliable and flexiblestructure of networks;to meetthe itczeasingneeds of the citizens forhigher material and cultrallife and theneeds of steady, rapiddevelopment if thecity' s national economy;to develop 220KVas themajor network framework of the city'svoltage classof powernetworks; to raisethe supply capacity of the city'appower networks; to improvethe pattern of the urban networks; to increase thedegree of modernizationof power networks;to improvethe conditions of power supply; to graduallyestablish cable networks;to rationallysupply distributionand transformingpower appliances; to reduce the pollutionof eletromagneticradiation; to realize -3- automaticcontrol of power supply and distribution; to ensurea steadyand reliablequality of voltage. 1.4 PLan of the Remouldingof thePower Networks of NingboCity Accordingto thl basicconceptiono of the power network remouldingof Ninbo city, the ElectricPower Company of ZhejiangProvince desiges to forma 110KV circularnetwork of power supplysupply by connectingthe centerof the city with Beilu (whichi6 a major powersource spot) 220KV power network.Thetansformer substztion of the cithcenter adopts small-sizedadvanced equipment, forming IOKV circular cable networkof powersupply. Duringthe 7 yearsfrom 1994 to 2000,Ningbo's network remoulding includs the following major items: * Five220KV transformer substetions, 900 NVA, 87 b: Waiting, Jiangman I-stage, JiangganII- stage enlarging project,Xinle enlargingproject and Ninnan transformer substation.# Ten IIOKV transformersubstations 2 740VA, 95.7km: Zhongxin,Qinsi, Zhongzin,Beijao, Luotuo, Changsanzheusu (tension-raising), Beimeng, BRaoan, and Shuguang transformer substations; I IOKVdistribution powersystem project and controlling equipment. 1.2 Coverage of Researeh 1.2.1 Coverage of ReseaLrch,Key Points andPurpose Coverage of research largely includes an area of I m outsidethe boundary of the transformer substatiots, the -4- area covered by the projected220KV circuit (87km) and II0KV eireuit(96.7km) , and the area involvedby the 10KV distributionpower system project. Thekey pointsincelud the projeet's locality, possible oceurrenceof accidentsand effeets; the effectson the entirecoutse of projectof tke design, constructiotand normaloperation or when they are cancelledor altered; distussionof the measuresof reducingand preventing disadvantages;analysis of tkeeffects of tieproject on its usagefor mankind and the quality of life;evaluation of the irrevocableeffects of the projectonthe enviroment; proposalof themetkods of avoidingor compenastingfor long or short effects. Accordingto the above analysis,we proposethe eoneltsionof thepreseat report, as a scientificbasis for business'spreventive and precautionalmeasures against pollutionand for theauthorities' ratification. 1.2. 2 Organsof ResearchWork The Power Companyof Zhejiang Province has organized personnel to undertake the research of the present project. The arafting unit in the Power Designning [nstitute of ZhejiangProvince, the holder of the state-issued A 1200011 'Class A Survey Desig Certificate' of tie Ministry of Constructionand B 009 'ClassB EnviromentalEffect evaluationCertificate issued by ZhejianggEvironmental ProtectionBureau. -5- 1.3Basis of Drafting,Laws and Standardsof Execution of theReport 1.8.1Basis of Drafting ( 1) The State Council'sEnvironmental Protection Committee,The National Planning